leverington/tdc_gpx2
1
0
Fork 0
Code Issues Pull Requests repo.project_board Releases Wiki Activity

first push

Browse Source
This commit is contained in:
Blake Leverington 2023-08-11 14:09:43 +02:00
parent c0448e75f8
commit f42ffaed3d
52 changed files with 8328 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
.gitignore vendored
View File

@ -1,3 +1,7 @@
#my stuff
data/*
*.dat
# ---> C++
# Prerequisites
*.d

674
LICENSE Normal file
View File

@ -0,0 +1,674 @@
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft license for
software and other kinds of works.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users. We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors. You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new
free programs, and that you know you can do these things.
To protect your rights, we need to prevent others from denying you
these rights or asking you to surrender the rights. Therefore, you have
certain responsibilities if you distribute copies of the software, or if
you modify it: responsibilities to respect the freedom of others.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must pass on to the recipients the same
freedoms that you received. You must make sure that they, too, receive
or can get the source code. And you must show them these terms so they
know their rights.
Developers that use the GNU GPL protect your rights with two steps:
(1) assert copyright on the software, and (2) offer you this License
giving you legal permission to copy, distribute and/or modify it.
For the developers' and authors' protection, the GPL clearly explains
that there is no warranty for this free software. For both users' and
authors' sake, the GPL requires that modified versions be marked as
changed, so that their problems will not be attributed erroneously to
authors of previous versions.
Some devices are designed to deny users access to install or run
modified versions of the software inside them, although the manufacturer
can do so. This is fundamentally incompatible with the aim of
protecting users' freedom to change the software. The systematic
pattern of such abuse occurs in the area of products for individuals to
use, which is precisely where it is most unacceptable. Therefore, we
have designed this version of the GPL to prohibit the practice for those
products. If such problems arise substantially in other domains, we
stand ready to extend this provision to those domains in future versions
of the GPL, as needed to protect the freedom of users.
Finally, every program is threatened constantly by software patents.
States should not allow patents to restrict development and use of
software on general-purpose computers, but in those that do, we wish to
avoid the special danger that patents applied to a free program could
make it effectively proprietary. To prevent this, the GPL assures that
patents cannot be used to render the program non-free.
The precise terms and conditions for copying, distribution and
modification follow.
TERMS AND CONDITIONS
0. Definitions.
"This License" refers to version 3 of the GNU General Public License.
"Copyright" also means copyright-like laws that apply to other kinds of
works, such as semiconductor masks.
"The Program" refers to any copyrightable work licensed under this
License. Each licensee is addressed as "you". "Licensees" and
"recipients" may be individuals or organizations.
To "modify" a work means to copy from or adapt all or part of the work
in a fashion requiring copyright permission, other than the making of an
exact copy. The resulting work is called a "modified version" of the
earlier work or a work "based on" the earlier work.
A "covered work" means either the unmodified Program or a work based
on the Program.
To "propagate" a work means to do anything with it that, without
permission, would make you directly or secondarily liable for
infringement under applicable copyright law, except executing it on a
computer or modifying a private copy. Propagation includes copying,
distribution (with or without modification), making available to the
public, and in some countries other activities as well.
To "convey" a work means any kind of propagation that enables other
parties to make or receive copies. Mere interaction with a user through
a computer network, with no transfer of a copy, is not conveying.
An interactive user interface displays "Appropriate Legal Notices"
to the extent that it includes a convenient and prominently visible
feature that (1) displays an appropriate copyright notice, and (2)
tells the user that there is no warranty for the work (except to the
extent that warranties are provided), that licensees may convey the
work under this License, and how to view a copy of this License. If
the interface presents a list of user commands or options, such as a
menu, a prominent item in the list meets this criterion.
1. Source Code.
The "source code" for a work means the preferred form of the work
for making modifications to it. "Object code" means any non-source
form of a work.
A "Standard Interface" means an interface that either is an official
standard defined by a recognized standards body, or, in the case of
interfaces specified for a particular programming language, one that
is widely used among developers working in that language.
The "System Libraries" of an executable work include anything, other
than the work as a whole, that (a) is included in the normal form of
packaging a Major Component, but which is not part of that Major
Component, and (b) serves only to enable use of the work with that
Major Component, or to implement a Standard Interface for which an
implementation is available to the public in source code form. A
"Major Component", in this context, means a major essential component
(kernel, window system, and so on) of the specific operating system
(if any) on which the executable work runs, or a compiler used to
produce the work, or an object code interpreter used to run it.
The "Corresponding Source" for a work in object code form means all
the source code needed to generate, install, and (for an executable
work) run the object code and to modify the work, including scripts to
control those activities. However, it does not include the work's
System Libraries, or general-purpose tools or generally available free
programs which are used unmodified in performing those activities but
which are not part of the work. For example, Corresponding Source
includes interface definition files associated with source files for
the work, and the source code for shared libraries and dynamically
linked subprograms that the work is specifically designed to require,
such as by intimate data communication or control flow between those
subprograms and other parts of the work.
The Corresponding Source need not include anything that users
can regenerate automatically from other parts of the Corresponding
Source.
The Corresponding Source for a work in source code form is that
same work.
2. Basic Permissions.
All rights granted under this License are granted for the term of
copyright on the Program, and are irrevocable provided the stated
conditions are met. This License explicitly affirms your unlimited
permission to run the unmodified Program. The output from running a
covered work is covered by this License only if the output, given its
content, constitutes a covered work. This License acknowledges your
rights of fair use or other equivalent, as provided by copyright law.
You may make, run and propagate covered works that you do not
convey, without conditions so long as your license otherwise remains
in force. You may convey covered works to others for the sole purpose
of having them make modifications exclusively for you, or provide you
with facilities for running those works, provided that you comply with
the terms of this License in conveying all material for which you do
not control copyright. Those thus making or running the covered works
for you must do so exclusively on your behalf, under your direction
and control, on terms that prohibit them from making any copies of
your copyrighted material outside their relationship with you.
Conveying under any other circumstances is permitted solely under
the conditions stated below. Sublicensing is not allowed; section 10
makes it unnecessary.
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
No covered work shall be deemed part of an effective technological
measure under any applicable law fulfilling obligations under article
11 of the WIPO copyright treaty adopted on 20 December 1996, or
similar laws prohibiting or restricting circumvention of such
measures.
When you convey a covered work, you waive any legal power to forbid
circumvention of technological measures to the extent such circumvention
is effected by exercising rights under this License with respect to
the covered work, and you disclaim any intention to limit operation or
modification of the work as a means of enforcing, against the work's
users, your or third parties' legal rights to forbid circumvention of
technological measures.
4. Conveying Verbatim Copies.
You may convey verbatim copies of the Program's source code as you
receive it, in any medium, provided that you conspicuously and
appropriately publish on each copy an appropriate copyright notice;
keep intact all notices stating that this License and any
non-permissive terms added in accord with section 7 apply to the code;
keep intact all notices of the absence of any warranty; and give all
recipients a copy of this License along with the Program.
You may charge any price or no price for each copy that you convey,
and you may offer support or warranty protection for a fee.
5. Conveying Modified Source Versions.
You may convey a work based on the Program, or the modifications to
produce it from the Program, in the form of source code under the
terms of section 4, provided that you also meet all of these conditions:
a) The work must carry prominent notices stating that you modified
it, and giving a relevant date.
b) The work must carry prominent notices stating that it is
released under this License and any conditions added under section
7. This requirement modifies the requirement in section 4 to
"keep intact all notices".
c) You must license the entire work, as a whole, under this
License to anyone who comes into possession of a copy. This
License will therefore apply, along with any applicable section 7
additional terms, to the whole of the work, and all its parts,
regardless of how they are packaged. This License gives no
permission to license the work in any other way, but it does not
invalidate such permission if you have separately received it.
d) If the work has interactive user interfaces, each must display
Appropriate Legal Notices; however, if the Program has interactive
interfaces that do not display Appropriate Legal Notices, your
work need not make them do so.
A compilation of a covered work with other separate and independent
works, which are not by their nature extensions of the covered work,
and which are not combined with it such as to form a larger program,
in or on a volume of a storage or distribution medium, is called an
"aggregate" if the compilation and its resulting copyright are not
used to limit the access or legal rights of the compilation's users
beyond what the individual works permit. Inclusion of a covered work
in an aggregate does not cause this License to apply to the other
parts of the aggregate.
6. Conveying Non-Source Forms.
You may convey a covered work in object code form under the terms
of sections 4 and 5, provided that you also convey the
machine-readable Corresponding Source under the terms of this License,
in one of these ways:
a) Convey the object code in, or embodied in, a physical product
(including a physical distribution medium), accompanied by the
Corresponding Source fixed on a durable physical medium
customarily used for software interchange.
b) Convey the object code in, or embodied in, a physical product
(including a physical distribution medium), accompanied by a
written offer, valid for at least three years and valid for as
long as you offer spare parts or customer support for that product
model, to give anyone who possesses the object code either (1) a
copy of the Corresponding Source for all the software in the
product that is covered by this License, on a durable physical
medium customarily used for software interchange, for a price no
more than your reasonable cost of physically performing this
conveying of source, or (2) access to copy the
Corresponding Source from a network server at no charge.
c) Convey individual copies of the object code with a copy of the
written offer to provide the Corresponding Source. This
alternative is allowed only occasionally and noncommercially, and
only if you received the object code with such an offer, in accord
with subsection 6b.
d) Convey the object code by offering access from a designated
place (gratis or for a charge), and offer equivalent access to the
Corresponding Source in the same way through the same place at no
further charge. You need not require recipients to copy the
Corresponding Source along with the object code. If the place to
copy the object code is a network server, the Corresponding Source
may be on a different server (operated by you or a third party)
that supports equivalent copying facilities, provided you maintain
clear directions next to the object code saying where to find the
Corresponding Source. Regardless of what server hosts the
Corresponding Source, you remain obligated to ensure that it is
available for as long as needed to satisfy these requirements.
e) Convey the object code using peer-to-peer transmission, provided
you inform other peers where the object code and Corresponding
Source of the work are being offered to the general public at no
charge under subsection 6d.
A separable portion of the object code, whose source code is excluded
from the Corresponding Source as a System Library, need not be
included in conveying the object code work.
A "User Product" is either (1) a "consumer product", which means any
tangible personal property which is normally used for personal, family,
or household purposes, or (2) anything designed or sold for incorporation
into a dwelling. In determining whether a product is a consumer product,
doubtful cases shall be resolved in favor of coverage. For a particular
product received by a particular user, "normally used" refers to a
typical or common use of that class of product, regardless of the status
of the particular user or of the way in which the particular user
actually uses, or expects or is expected to use, the product. A product
is a consumer product regardless of whether the product has substantial
commercial, industrial or non-consumer uses, unless such uses represent
the only significant mode of use of the product.
"Installation Information" for a User Product means any methods,
procedures, authorization keys, or other information required to install
and execute modified versions of a covered work in that User Product from
a modified version of its Corresponding Source. The information must
suffice to ensure that the continued functioning of the modified object
code is in no case prevented or interfered with solely because
modification has been made.
If you convey an object code work under this section in, or with, or
specifically for use in, a User Product, and the conveying occurs as
part of a transaction in which the right of possession and use of the
User Product is transferred to the recipient in perpetuity or for a
fixed term (regardless of how the transaction is characterized), the
Corresponding Source conveyed under this section must be accompanied
by the Installation Information. But this requirement does not apply
if neither you nor any third party retains the ability to install
modified object code on the User Product (for example, the work has
been installed in ROM).
The requirement to provide Installation Information does not include a
requirement to continue to provide support service, warranty, or updates
for a work that has been modified or installed by the recipient, or for
the User Product in which it has been modified or installed. Access to a
network may be denied when the modification itself materially and
adversely affects the operation of the network or violates the rules and
protocols for communication across the network.
Corresponding Source conveyed, and Installation Information provided,
in accord with this section must be in a format that is publicly
documented (and with an implementation available to the public in
source code form), and must require no special password or key for
unpacking, reading or copying.
7. Additional Terms.
"Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
be treated as though they were included in this License, to the extent
that they are valid under applicable law. If additional permissions
apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.
When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
it. (Additional permissions may be written to require their own
removal in certain cases when you modify the work.) You may place
additional permissions on material, added by you to a covered work,
for which you have or can give appropriate copyright permission.
Notwithstanding any other provision of this License, for material you
add to a covered work, you may (if authorized by the copyright holders of
that material) supplement the terms of this License with terms:
a) Disclaiming warranty or limiting liability differently from the
terms of sections 15 and 16 of this License; or
b) Requiring preservation of specified reasonable legal notices or
author attributions in that material or in the Appropriate Legal
Notices displayed by works containing it; or
c) Prohibiting misrepresentation of the origin of that material, or
requiring that modified versions of such material be marked in
reasonable ways as different from the original version; or
d) Limiting the use for publicity purposes of names of licensors or
authors of the material; or
e) Declining to grant rights under trademark law for use of some
trade names, trademarks, or service marks; or
f) Requiring indemnification of licensors and authors of that
material by anyone who conveys the material (or modified versions of
it) with contractual assumptions of liability to the recipient, for
any liability that these contractual assumptions directly impose on
those licensors and authors.
All other non-permissive additional terms are considered "further
restrictions" within the meaning of section 10. If the Program as you
received it, or any part of it, contains a notice stating that it is
governed by this License along with a term that is a further
restriction, you may remove that term. If a license document contains
a further restriction but permits relicensing or conveying under this
License, you may add to a covered work material governed by the terms
of that license document, provided that the further restriction does
not survive such relicensing or conveying.
If you add terms to a covered work in accord with this section, you
must place, in the relevant source files, a statement of the
additional terms that apply to those files, or a notice indicating
where to find the applicable terms.
Additional terms, permissive or non-permissive, may be stated in the
form of a separately written license, or stated as exceptions;
the above requirements apply either way.
8. Termination.
You may not propagate or modify a covered work except as expressly
provided under this License. Any attempt otherwise to propagate or
modify it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third
paragraph of section 11).
However, if you cease all violation of this License, then your
license from a particular copyright holder is reinstated (a)
provisionally, unless and until the copyright holder explicitly and
finally terminates your license, and (b) permanently, if the copyright
holder fails to notify you of the violation by some reasonable means
prior to 60 days after the cessation.
Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.
Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License. If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.
9. Acceptance Not Required for Having Copies.
You are not required to accept this License in order to receive or
run a copy of the Program. Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance. However,
nothing other than this License grants you permission to propagate or
modify any covered work. These actions infringe copyright if you do
not accept this License. Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.
10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License. You are not responsible
for enforcing compliance by third parties with this License.
An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations. If propagation of a covered
work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party's predecessor in interest had or could
give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License. For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.
11. Patents.
A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based. The
work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version. For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.
Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.
In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement). To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.
If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients. "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License. You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

26
README.md
View File

@ -1,6 +1,24 @@
# tdc_gpx2
# Software for RPi compatible shield for TDC-GPX2 chip
The TDC-GPX2 is a time-to-digital converter from ScioSense with up to 10ps timing accuracy. This software uses the linux kernel for GPIO and SPI-Bus to readout the GPX2 and calculate time intervals between signals. There is also the possibility of reading out the TDC using a FPGA which will then give much faster readout.
readout software for 2 channels [0 and 1] of the tdc-gpx2 board with raspberry pi 3B SPI readout.
# TDC-GPX2_Software
Files for building readout software for the TDC-GPX2 from ScioSense.
| Folder | Description |
| ------ | ----------- |
| source/gpx2-raspi-readout-program| Contains a readout loop, buffer and calculations to measure time intervals between two signals with good accuracy.
| source/spi | Folder containing gpx2 source files for making the tdc board library containing all options and an high level access for readout.
| source/gpx2-fpga | tba |
<br>
<strong>Readout via SPI:</strong>
This code is a fork of the original design by marvin.peter@physik.uni-giessen.de
https://github.com/marvin5300/tdc-gpx2_software
Required:
- linux operating system (preferrably raspberry pi OS)
- up-to-date c++ compiler (C++17 compatible), tested with clang 11 and newer
How to build:
- This software packages is build with cmake
- builds the gpx2 library and optionally the readout program
<br>
<strong>Readout via LVDS using an FPGA:</strong><br>
coming soon

BIN
scripts/marchposter.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 69 KiB

BIN
scripts/oscilloscope_15ps_320Hz_singlechannelsplit.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 20 KiB

BIN
scripts/oscilloscope_20ps_320Hz.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 21 KiB

BIN
scripts/oscilloscope_20ps_320Hz_2v5input.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 18 KiB

35
scripts/plottdc.py Normal file
View File

@ -0,0 +1,35 @@
import numpy as np
import matplotlib.pyplot as plt
# Open the file and read in the data
with open('../data/test02.dat', 'r') as f:
lines = f.readlines()
# Extract the second column of data
data = []
for line in lines:
values = line.strip().split()
data.append(float(values[1]))
#determine histrange from data
hist_range = 5 * np.std(data)
hist_mean = np.mean(data)
hist_start = hist_mean - hist_range
hist_end = hist_mean + hist_range
# Create the histogram with range
hist, bins, _ = plt.hist(data, bins=100, range=(hist_start,hist_end))
# Calculate the mean and RMS
bin_centers = 0.5 * (bins[:-1] + bins[1:])
# Set the x-axis label and title
plt.xlabel('Data')
plt.title('Histogram of Data')
# Show the plot
plt.show()
# Print the mean and RMS
print(f"Mean: {np.mean(data):.3g}")
print(f"RMS: {np.std(data):.3g}")

49
scripts/plottdc_dump.py Normal file
View File

@ -0,0 +1,49 @@
import argparse
import numpy as np
import matplotlib.pyplot as plt
#parse the command line arguments
parser = argparse.ArgumentParser(description="Plot a histogram")
parser.add_argument("input_file",help="Path to the input data set with 7 columns")
args = parser.parse_args()
# Open the file and read in the data
with open(args.input_file, 'r') as f:
lines = f.readlines()
# Extract the second column of data
data = []
for line in lines:
values = line.strip().split()
if len(values) >= 7 and float(values[5]) == 0:
data.append(float(values[6]))
#determine histrange from data
hist_range = 10 * np.std(data)
hist_mean = np.mean(data)
hist_start = hist_mean - hist_range
hist_end = hist_mean + hist_range
# Create the histogram with range
hist, bins, _ = plt.hist(data, bins=200, range=(hist_start,hist_end))
# Calculate the mean and RMS
bin_centers = 0.5 * (bins[:-1] + bins[1:])
mean = np.average(bin_centers, weights=hist)
rms = np.sqrt(np.average((bin_centers - mean)**2, weights=hist ))
# Set the x-axis label and title
plt.xlabel('time difference / seconds')
plt.title(' - ')
plt.annotate(f"Mean: {mean:.3g}\nRMS; {rms:.3g}",
xy=(0.75, 0.85),
xycoords='axes fraction',
fontsize=12,
bbox=dict(boxstyle="round,pad=0.3", edgecolor="gray", facecolor="lightgray"))
# Show the plot
plt.show()

2
source/.gitignore vendored Normal file
View File

@ -0,0 +1,2 @@
.vs/
out/

14
source/CMakeLists.txt Normal file
View File

@ -0,0 +1,14 @@
cmake_minimum_required (VERSION 3.10)
project (gpx2)
option(BUILD_TIDY "Use clang tidy to build" OFF)
option(BUILD_TOOLS "Build additional tools (like readout program) in addition to the library" ON)
option(BUILD_DOCS "Build doxygen files" OFF)
set(CMAKE_BUILD_TYPE Release)
message("${CMAKE_HOST_SYSTEM_PROCESSOR}")
add_subdirectory(spi)
if (BUILD_TOOLS)
add_subdirectory(gpx2-raspi-readout-program)
endif (BUILD_TOOLS)

2
source/gpx2-raspi-pigpiod-lib-deprecated/.gitignore vendored Normal file
View File

@ -0,0 +1,2 @@
.vs/
out/

126
source/gpx2-raspi-pigpiod-lib-deprecated/CMakeLists.txt Normal file
View File

@ -0,0 +1,126 @@
cmake_minimum_required(VERSION 3.10)
project(gpx2 LANGUAGES CXX C)
set(PROJECT_SRC_DIR "${CMAKE_CURRENT_SOURCE_DIR}/src")
set(PROJECT_HEADER_DIR "${CMAKE_CURRENT_SOURCE_DIR}/include")
set(PROJECT_CONFIG_DIR "${CMAKE_CURRENT_SOURCE_DIR}/config")
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/../lib")
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/../lib")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/../bin")
include("${CMAKE_CURRENT_SOURCE_DIR}/cmake/version.cmake")
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED ON)
# check if Doxygen is installed (from https://vicrucann.github.io/tutorials/quick-cmake-doxygen/)
find_package(Doxygen)
if (DOXYGEN_FOUND AND BUILD_DOCS)
# set input and output files
set(DOXYGEN_IN ${CMAKE_CURRENT_SOURCE_DIR}/doxygen/Doxyfile.in)
set(DOXYGEN_OUT ${CMAKE_CURRENT_BINARY_DIR}/doxygen/Doxyfile)
# request to configure the file
configure_file(${DOXYGEN_IN} ${DOXYGEN_OUT} @ONLY)
# note the option ALL which allows to build the docs together with the application
add_custom_target( doc_doxygen ALL
COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYGEN_OUT}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMENT "Generating API documentation with Doxygen"
VERBATIM )
elseif (BUILD_DOCS)
message("doxygen need to be installed to generate the doxygen documentation. for generating tree views graphviz is needed.")
else ()
message("Selected option doxygen build OFF. Doxygen will not be build.")
endif ()
find_library(PIGPIOD_IF2 pigpiod_if2 REQUIRED)
add_compile_options(
-Wall
-Wextra
-Wshadow
-Wpedantic
-O3
)
configure_file(
"${PROJECT_CONFIG_DIR}/version.h"
"${PROJECT_HEADER_DIR}/version.h"
)
set(GPX2_SOURCE_FILES
"${PROJECT_SRC_DIR}/gpx2.cpp"
"${PROJECT_SRC_DIR}/config.cpp"
)
set(GPX2_HEADER_FILES
"${PROJECT_HEADER_DIR}/gpx2.h"
"${PROJECT_HEADER_DIR}/config.h"
)
add_definitions(-Dgpx2_objlib_LIBRARY_EXPORT)
add_library(gpx2_objlib OBJECT ${GPX2_SOURCE_FILES} ${GPX2_HEADER_FILES})
add_library(gpx2 SHARED $<TARGET_OBJECTS:gpx2_objlib>)
add_library(gpx2_static STATIC $<TARGET_OBJECTS:gpx2_objlib>)
target_include_directories(gpx2_objlib PUBLIC
${PROJECT_HEADER_DIR}
)
set_property(TARGET gpx2_objlib PROPERTY POSITION_INDEPENDENT_CODE 1)
target_link_libraries(gpx2_objlib
pigpiod_if2
)
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -s")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -s")
set_target_properties(
gpx2
PROPERTIES
SOVERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}"
)
include(GNUInstallDirs)
set(GPX2_PACKAGE_NAME "gpx2")
add_custom_target(changelog ALL COMMAND gzip -cn9 "${PROJECT_CONFIG_DIR}/changelog" > "${CMAKE_CURRENT_BINARY_DIR}/changelog.gz")
install(TARGETS gpx2 DESTINATION lib COMPONENT "${GPX2_PACKAGE_NAME}")
install(FILES ${GPX2_HEADER_FILES} DESTINATION include COMPONENT "${GPX2_PACKAGE_NAME}")
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/changelog.gz" DESTINATION "${CMAKE_INSTALL_DOCDIR}" COMPONENT "${GPX2_PACKAGE_NAME}")
install(FILES "${PROJECT_CONFIG_DIR}/copyright" DESTINATION "${CMAKE_INSTALL_DOCDIR}" COMPONENT "${GPX2_PACKAGE_NAME}")
set(CPACK_GENERATOR "DEB")
set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON)
set(CPACK_PACKAGE_DESCRIPTION_FILE "${PROJECT_CONFIG_DIR}/copyright")
set(CPACK_DEBIAN_PACKAGE_DEPENDS "pigpiod")
set(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_CONFIG_DIR}/license")
set(CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA "${PROJECT_CONFIG_DIR}/triggers")
set(CPACK_PACKAGE_VENDOR "Marvin Peter")
set(CPACK_DEBIAN_PACKAGE_SECTION "libs")
set(CPACK_DEBIAN_PACKAGE_HOMEPAGE "https://github.com/marvin5300/GPX2-TDC")
set(CPACK_PACKAGE_VERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}")
set(CPACK_PACKAGE_VERSION_MAJOR "${PROJECT_VERSION_MAJOR}")
set(CPACK_PACKAGE_VERSION_MINOR "${PROJECT_VERSION_MINOR}")
set(CPACK_PACKAGE_VERSION_PATCH "${PROJECT_VERSION_PATCH}")
set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Library for GPX2 TDC control")
set(CPACK_DEBIAN_PACKAGE_DESCRIPTION " It makes connecting to TDC board possible.
It is licensed under the GNU Lesser General Public License version 3 (LGPL v3).")
set(CPACK_DEBIAN_PACKAGE_MAINTAINER "Marvin Peter <marvin.peter@physik.uni-giessen.de>")
set(CPACK_PACKAGE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/../packages/")
set(CPACK_STRIP_FILES "${CMAKE_CURRENT_BINARY_DIR}/../lib/${GPX2_PACKAGE_NAME}")
set(CPACK_PACKAGE_NAME "${GPX2_PACKAGE_NAME}")
set(CPACK_SOURCE_PACKAGE_FILE_NAME "${GPX2_PACKAGE_NAME}")
set(CPACK_SYSTEM_NAME "Linux-armv7l")
set(CPACK_TOPLEVEL_TAG "Linux-armv7l")
set(CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS ON)
include(CPack)

2
source/gpx2-raspi-pigpiod-lib-deprecated/README.md Normal file
View File

@ -0,0 +1,2 @@
This library is deprecated, it uses pigpiod to communicate via spi.
It is recommended to use the new spi library with gpx2 device implemented inside using spidev c api.

3
source/gpx2-raspi-pigpiod-lib-deprecated/cmake/version.cmake Normal file
View File

@ -0,0 +1,3 @@
set(PROJECT_VERSION_MAJOR 1)
set(PROJECT_VERSION_MINOR 0)
set(PROJECT_VERSION_PATCH 0)

5
source/gpx2-raspi-pigpiod-lib-deprecated/config/changelog Normal file
View File

@ -0,0 +1,5 @@
gpx2 (1.0.0) ; urgency=low
* Initial release.
-- Marvin Peter <marvin.peter@physik.uni-giessen.de> Fri, 12 Feb 2021 19:20:00 +0100

24
source/gpx2-raspi-pigpiod-lib-deprecated/config/copyright Normal file
View File

@ -0,0 +1,24 @@
Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
#Upstream-Name: gpx2
#Source: https://github.com/marvin5300/GPX2-TDC
Files: *
Copyright: 2021 Marvin Peter <marvin.peter@physik.uni-giessen.de>
License: GPL-3.0+
License: GPL-3.0+
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
.
This package is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
.
On Debian systems, the complete text of the GNU General
Public License version 3 can be found in "/usr/share/common-licenses/GPL-3".

24
source/gpx2-raspi-pigpiod-lib-deprecated/config/license Normal file
View File

@ -0,0 +1,24 @@
Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
#Upstream-Name: gpx2
#Source: https://github.com/marvin5300/GPX2-TDC
Files: *
Copyright: 2021 Marvin Peter <marvin.peter@physik.uni-giessen.de>
License: GPL-3.0+
License: GPL-3.0+
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
.
This package is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
.
On Debian systems, the complete text of the GNU General
Public License version 3 can be found in "/usr/share/common-licenses/GPL-3".

1
source/gpx2-raspi-pigpiod-lib-deprecated/config/triggers Normal file
View File

@ -0,0 +1 @@
activate-noawait ldconfig

10
source/gpx2-raspi-pigpiod-lib-deprecated/config/version.h Normal file
View File

@ -0,0 +1,10 @@
#ifndef GPX2_VERSION_H
#define GPX2_VERSION_H
namespace GPX2_TDC::CMake::Version {
constexpr int major { @PROJECT_VERSION_MAJOR@ };
constexpr int minor { @PROJECT_VERSION_MINOR@ };
constexpr int patch { @PROJECT_VERSION_PATCH@ };
}
#endif // GPX2_VERSION_H

2495
source/gpx2-raspi-pigpiod-lib-deprecated/doxygen/Doxyfile.in Normal file
View File

File diff suppressed because it is too large Load Diff

58
source/gpx2-raspi-pigpiod-lib-deprecated/include/config.h Normal file
View File

@ -0,0 +1,58 @@
#ifndef CONFIG_H
#define CONFIG_H
#include <stdint.h>
#include <string>
namespace GPX2_TDC {
struct Config {
// reg_addr 0
uint8_t PIN_ENA_RSTIDX : 1;
uint8_t PIN_ENA_DISABLE : 1;
uint8_t PIN_ENA_LVDS_OUT : 1;
uint8_t PIN_ENA_REFCLK : 1;
uint8_t PIN_ENA_STOP4 : 1;
uint8_t PIN_ENA_STOP3 : 1;
uint8_t PIN_ENA_STOP2 : 1;
uint8_t PIN_ENA_STOP1 : 1;
// reg_addr 1
uint8_t HIGH_RESOLUTION : 2;
uint8_t CHANNEL_COMBINE : 2;
uint8_t HIT_ENA_STOP4 : 1;
uint8_t HIT_ENA_STOP3 : 1;
uint8_t HIT_ENA_STOP2 : 1;
uint8_t HIT_ENA_STOP1 : 1;
// reg_addr 2
uint8_t BLOCKWISE_FIFO_READ : 1;
uint8_t COMMON_FIFO_READ : 1;
uint8_t LVS_DOUBLE_DATA_RATE : 1;
uint8_t STOP_DATA_BITWIDTH : 2;
uint8_t REF_INDEX_BITWIDTH : 3;
// reg_addr 3
uint8_t REFCLK_DIVISIONS_LOWER; // (Lower byte)
// reg_addr 4
uint8_t REFCLK_DIVISIONS_MIDDLE; // (Middle byte)
// reg_addr 5
uint8_t REFCLK_DIVISIONS_UPPER : 4; // (Upper bits)
// reg_addr 6
uint8_t LVDS_TEST_PATTERN : 1;
// reg_addr 7
uint8_t REFCLK_BY_XOSC : 1;
uint8_t LVDS_DATA_VALID_ADJUST : 2;
// reg_addr 16
uint8_t CMOS_INPUT : 1;
Config();
void loadDefaultConfig();
std::string str() const;
};
}
#endif // !CONFIG_H

46
source/gpx2-raspi-pigpiod-lib-deprecated/include/gpx2.h Normal file
View File

@ -0,0 +1,46 @@
#ifndef GPX2_H
#define GPX2_H
#include "config.h"
#include <stdint.h>
#include <string>
namespace GPX2_TDC {
static const std::uint8_t spiopc_power = 0x30; // Power on reset and stop measurement
static const std::uint8_t spiopc_init = 0x18; // Initializes Chip and starts measurement
static const std::uint8_t spiopc_write_config = 0x80; // Write to configuration register X=0..17
static const std::uint8_t spiopc_read_results = 0x60; // Read opcode for result and status register X=8..31
static const std::uint8_t spiopc_read_config = 0x40; // Readout of configuration register X=0..17
class GPX2 {
public:
GPX2();
~GPX2();
Config config;
void power_on_reset();
void init_reset();
auto write_config()->bool;
auto write_config(const Config& data)->bool;
auto write_config(const std::string& data)->bool;
auto write_config(const std::uint8_t reg_addr, const std::uint8_t data)->bool;
auto read_config()->std::string;
auto read_config(const std::uint8_t reg_addr)->std::uint8_t;
auto read_results()->std::string;
auto writeSpi(const std::uint8_t command, const std::string& data)->bool;
auto readSpi(const std::uint8_t command, const std::size_t bytesToRead)->std::string;
auto isSpiInitialised()->bool;
private:
int pi = -1;
int spiHandle = -1;
unsigned int spi_freq = 61035;
uint32_t spi_flags = 0b10;
bool spiInitialised = false;
auto spiInitialise()->bool;
};
}
#endif // !GPX2_H

10
source/gpx2-raspi-pigpiod-lib-deprecated/include/version.h Normal file
View File

@ -0,0 +1,10 @@
#ifndef GPX2_VERSION_H
#define GPX2_VERSION_H
namespace GPX2_TDC::CMake::Version {
constexpr int major { 1 };
constexpr int minor { 0 };
constexpr int patch { 0 };
}
#endif // GPX2_VERSION_H

138
source/gpx2-raspi-pigpiod-lib-deprecated/src/config.cpp Normal file
View File

@ -0,0 +1,138 @@
#include "config.h"
#include <stdint.h>
#include <string>
using namespace GPX2_TDC;
// default config defined by the author of this program
Config::Config()
: PIN_ENA_RSTIDX{ 0 }
, PIN_ENA_DISABLE{ 0 }
, PIN_ENA_LVDS_OUT{ 0 }
, PIN_ENA_REFCLK{ 0 }
, PIN_ENA_STOP4{ 0 }
, PIN_ENA_STOP3{ 0 }
, PIN_ENA_STOP2{ 0 }
, PIN_ENA_STOP1{ 0 } // reg_addr 0
, HIGH_RESOLUTION{ 0 }
, CHANNEL_COMBINE{ 0 }
, HIT_ENA_STOP4{ 0 }
, HIT_ENA_STOP3{ 0 }
, HIT_ENA_STOP2{ 0 }
, HIT_ENA_STOP1{ 0 } // reg_addr 1
, BLOCKWISE_FIFO_READ{ 0 }
, COMMON_FIFO_READ{ 0 }
, LVS_DOUBLE_DATA_RATE{ 0 }
, STOP_DATA_BITWIDTH{ 0 }
, REF_INDEX_BITWIDTH{ 0 } // reg_addr 2
, REFCLK_DIVISIONS_LOWER{ 0 } // reg_addr 3
, REFCLK_DIVISIONS_MIDDLE{ 0 } // reg_addr 4
, REFCLK_DIVISIONS_UPPER{ 0 } // reg_addr 5
, LVDS_TEST_PATTERN{ 0 } // reg_addr 6
, REFCLK_BY_XOSC{ 0 }
, LVDS_DATA_VALID_ADJUST{ 0 } // reg_addr 7
, CMOS_INPUT{ 0 } // reg_addr 16
{}
void Config::loadDefaultConfig() {
// reg_addr 0
PIN_ENA_DISABLE = 0;
PIN_ENA_RSTIDX = 0;
PIN_ENA_LVDS_OUT = 0;
PIN_ENA_REFCLK = 0;
PIN_ENA_STOP4 = 1;
PIN_ENA_STOP3 = 1;
PIN_ENA_STOP2 = 1;
PIN_ENA_STOP1 = 1;
// reg_addr 1
HIGH_RESOLUTION = 2;
CHANNEL_COMBINE = 0;
HIT_ENA_STOP4 = 1;
HIT_ENA_STOP3 = 1;
HIT_ENA_STOP2 = 1;
HIT_ENA_STOP1 = 1;
// reg_addr 2
BLOCKWISE_FIFO_READ = 1;
COMMON_FIFO_READ = 1;
LVS_DOUBLE_DATA_RATE = 0;
STOP_DATA_BITWIDTH = 0b11;
REF_INDEX_BITWIDTH = 0b010;
// reg_addr 3
REFCLK_DIVISIONS_LOWER = 0x40; // 5MHz clk => T = 200ns = 200,000ps
// reg_addr 4
REFCLK_DIVISIONS_MIDDLE = 0x0d; // set REFCLK_DIVISIONS to 200,000 for LSB to be 1ps
// reg_addr 5
REFCLK_DIVISIONS_UPPER = 0x03; // 200,000 = 0x030d40
// reg_addr 6
LVDS_TEST_PATTERN = 0;
// reg_addr 7
REFCLK_BY_XOSC = 1; // use external quartz, ignore external clock => 1
LVDS_DATA_VALID_ADJUST = 1;
// reg_addr 16
CMOS_INPUT = 1;
}
// pack bits in the correct order and return a string.
std::string Config::str() const {
std::string data;
uint8_t byte;
byte = PIN_ENA_RSTIDX << 7;
byte |= PIN_ENA_DISABLE << 6;
byte |= PIN_ENA_LVDS_OUT << 5;
byte |= PIN_ENA_REFCLK << 4;
byte |= PIN_ENA_STOP4 << 3;
byte |= PIN_ENA_STOP3 << 2;
byte |= PIN_ENA_STOP2 << 1;
byte |= PIN_ENA_STOP1;
data += static_cast<char>(byte);
byte = HIGH_RESOLUTION << 6;
byte |= CHANNEL_COMBINE << 4;
byte |= HIT_ENA_STOP4 << 3;
byte |= HIT_ENA_STOP3 << 2;
byte |= HIT_ENA_STOP2 << 1;
byte |= HIT_ENA_STOP1;
data += static_cast<char>(byte);
byte = BLOCKWISE_FIFO_READ << 7;
byte |= COMMON_FIFO_READ << 6;
byte |= LVS_DOUBLE_DATA_RATE << 5;
byte |= STOP_DATA_BITWIDTH << 3;
byte |= REF_INDEX_BITWIDTH;
data += static_cast<char>(byte);
data += REFCLK_DIVISIONS_LOWER;
data += REFCLK_DIVISIONS_MIDDLE;
data += REFCLK_DIVISIONS_UPPER;
byte = (0b110 << 5) | (LVDS_TEST_PATTERN << 4);
data += static_cast<char>(byte);
byte = (REFCLK_BY_XOSC << 8) | (0b1 << 7) | (LVDS_DATA_VALID_ADJUST << 4) | 0b0011;
data += static_cast<char>(byte);
data += static_cast<char>(0b10100001);
data += static_cast<char>(0b00010011);
data += static_cast<char>(0b00000000);
data += static_cast<char>(0b00001010);
data += static_cast<char>(0b11001100);
data += static_cast<char>(0b11001100);
data += static_cast<char>(0b11110001);
data += static_cast<char>(0b01111101);
byte = (CMOS_INPUT << 2);
data += static_cast<char>(byte);
return data;
}

196
source/gpx2-raspi-pigpiod-lib-deprecated/src/gpx2.cpp Normal file
View File

@ -0,0 +1,196 @@
#include "gpx2.h"
#include "config.h"
#include <iostream>
#include <iomanip>
extern "C" {
#include <pigpiod_if2.h>
}
using namespace GPX2_TDC;
GPX2::GPX2() {
pi = pigpio_start((char*)"127.0.0.1", (char*)"8888");
if (pi < 0) {
std::cerr << "Could not connect to pigpio daemon. Is pigpiod running? Start with sudo pigpiod\n";
return;
}
if (!spiInitialise()) {
std::cerr << "Could not initialise spi connection.\n";
exit(-1);
return;
}
power_on_reset();
}
GPX2::~GPX2() {
if (spiHandle >= 0) {
bool status = spi_close(pi, spiHandle);
if (status != 0) {
std::cerr << "pi bad handle";
}
}
if (pi >= 0) {
pigpio_stop(pi);
}
}
void GPX2::power_on_reset() {
writeSpi(spiopc_power, "");
}
void GPX2::init_reset() {
writeSpi(spiopc_init, "");
}
bool GPX2::write_config() {
return write_config(config);
}
bool GPX2::write_config(const Config& data) {
return write_config(data.str());
}
bool GPX2::write_config(const std::string& data) {
if (data.size() != 17) {
std::cerr << "write all of the config only possible if 17 bytes of data provided\n";
return false;
}
return writeSpi(spiopc_write_config, data);
}
bool GPX2::write_config(const std::uint8_t reg_addr, const std::uint8_t data) {
if (reg_addr > 16) {
std::cerr << "write config is only possible on register addr. 0...16\n";
return false;
}
std::string conf_str = std::string({static_cast<char>(data)});
return writeSpi(spiopc_write_config | reg_addr, conf_str);
}
std::string GPX2::read_config() {
return readSpi(spiopc_read_config, 17);
}
std::uint8_t GPX2::read_config(const std::uint8_t reg_addr) {
if (reg_addr > 16) {
std::cerr << "read config is only possible on register addr. 0...16\n";
return 0;
}
std::string data = readSpi(spiopc_read_config | reg_addr, 1);
if (data.empty()) {
return 0;
}
return data[0];
}
std::string GPX2::read_results() {
return readSpi(spiopc_read_results | 0x08, 26);
}
bool GPX2::writeSpi(const std::uint8_t command, const std::string& data) {
if (!spiInitialised) {
if (!spiInitialise()) {
return false;
}
}
const std::size_t n = data.size() + 1;
auto txBuf{ std::make_unique<char[]>(n) };
auto rxBuf{ std::make_unique<char[]>(n) };
txBuf[0] = static_cast<char>(command);
for (std::size_t i = 1; i < n; i++) {
txBuf[i] = data[i - 1];
}
auto status = spi_xfer(pi, spiHandle, txBuf.get(), rxBuf.get(), n);
if (status != static_cast<decltype(status)>(n)) {
if (status == PI_BAD_HANDLE) {
std::cerr << "writeSpi(...) : PI_BAD_HANDLE\n";
}
else if (status == PI_SPI_XFER_FAILED) {
std::cerr << "writeSpi(...) : PI_SPI_XFER_FAILED\n";
}
else if (status == PI_BAD_SPI_COUNT) {
std::cerr << "writeSpi(...): PI_BAD_SPI_COUNT\n";
}
else {
std::cerr << "writeSpi(...) : wrong number of bytes transfered\n";
}
return false;
}
return status;
}
std::string GPX2::readSpi(const std::uint8_t command, const std::size_t bytesToRead) {
if (!spiInitialised) {
if (!spiInitialise()) {
return "";
}
}
const std::size_t n = bytesToRead + 1;
auto txBuf{ std::make_unique<char[]>(n) };
auto rxBuf{ std::make_unique<char[]>(n) };
txBuf[0] = static_cast<char>(command);
auto status = spi_xfer(pi, spiHandle, txBuf.get(), rxBuf.get(), n);
if (status != static_cast<decltype(status)>(n)) {
if (status == PI_BAD_HANDLE) {
std::cerr << "readSpi(...) : PI_BAD_HANDLE\n";
}
else if (status == PI_SPI_XFER_FAILED) {
std::cerr << "readSpi(...) : PI_SPI_XFER_FAILED\n";
}
else if (status == PI_BAD_SPI_COUNT) {
std::cerr << "readSpi(...) : PI_BAD_SPI_COUNT\n";
}
else {
std::cerr << "readSpi(...) : wrong number of bytes transfered\n";
}
return "";
}
std::string data;
for (std::size_t i = 1; i < n; i++) {
data += rxBuf[i];
}
return data;
}
bool GPX2::isSpiInitialised() {
return spiInitialised;
}
bool GPX2::spiInitialise() {
if (spiInitialised) {
return true;
}
spiHandle = spi_open(pi, 0, spi_freq, spi_flags);
if (spiHandle < 0) {
std::string errstr = "";
switch (spiHandle) {
case PI_BAD_CHANNEL:
errstr = "DMA channel not 0-15";
break;
case PI_BAD_SPI_SPEED:
errstr = "bad SPI speed";
break;
case PI_BAD_FLAGS:
errstr = "bad spi open flags";
break;
case PI_NO_AUX_SPI:
errstr = "no auxiliary SPI on Pi A or B";
break;
case PI_SPI_OPEN_FAILED:
errstr = "can't open SPI device";
break;
default:
break;
}
std::cerr << "Could not initialise SPI bus:" << errstr << "\n";
return false;
}
spiInitialised = true;
return true;
}

2
source/gpx2-raspi-readout-program/.gitignore vendored Normal file
View File

@ -0,0 +1,2 @@
.vs/
out/

72
source/gpx2-raspi-readout-program/CMakeLists.txt Normal file
View File

@ -0,0 +1,72 @@
cmake_minimum_required(VERSION 3.10)
project(readout LANGUAGES CXX C)
set(PROJECT_SRC_DIR "${CMAKE_CURRENT_SOURCE_DIR}/src")
set(PROJECT_HEADER_DIR "${CMAKE_CURRENT_SOURCE_DIR}/include")
set(PROJECT_CONFIG_DIR "${CMAKE_CURRENT_SOURCE_DIR}/config")
set(LIBRARY_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../gpx2-raspi-lib/include/")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/../bin")
include("${CMAKE_CURRENT_SOURCE_DIR}/cmake/version.cmake")
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED ON)
if(${BUILD_TIDY})
set(CMAKE_CXX_CLANG_TIDY
clang-tidy;
-header-filter=^global;
-checks=-*,readability-*,bugprone-*,performace-*,clang-analyzer-*,modernize-*,hicpp-*;
)
endif(${BUILD_TIDY})
add_compile_options(
-Wall
-Wextra
-Wshadow
-Wpedantic
-O3
)
configure_file(
"${PROJECT_CONFIG_DIR}/version.h"
"${PROJECT_HEADER_DIR}/version.h"
)
set(READOUT_HEADER_FILES
"${PROJECT_HEADER_DIR}/gpio.h"
"${PROJECT_HEADER_DIR}/readout.h"
)
set(READOUT_SOURCE_FILES
"${PROJECT_SRC_DIR}/main.cpp"
"${PROJECT_SRC_DIR}/gpio.cpp"
"${PROJECT_SRC_DIR}/readout.cpp"
)
add_executable(readout ${READOUT_SOURCE_FILES} ${READOUT_HEADER_FILES})
target_include_directories(readout PUBLIC
${PROJECT_HEADER_DIR}
"${CMAKE_CURRENT_SOURCE_DIR}/../spi/include/spidevices/gpx2/"
)
target_link_directories(readout PUBLIC "${CMAKE_CURRENT_BINARY_DIR}/../lib/")
if (!WIN32)
find_library(LIBGPIOD libgpiod REQUIRED)
endif()
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)
target_link_libraries(readout
Threads::Threads
spi_static
gpiod
)
#set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -s")
#set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -s")

3
source/gpx2-raspi-readout-program/cmake/version.cmake Normal file
View File

@ -0,0 +1,3 @@
set(PROJECT_VERSION_MAJOR 1)
set(PROJECT_VERSION_MINOR 0)
set(PROJECT_VERSION_PATCH 0)

10
source/gpx2-raspi-readout-program/config/version.h Normal file
View File

@ -0,0 +1,10 @@
#ifndef GPX2_RASPI_READOUT_VERSION_H
#define GPX2_RASPI_READOUT_VERSION_H
namespace gpx2_raspi_readout::CMake::Version {
constexpr int major { @PROJECT_VERSION_MAJOR@ };
constexpr int minor { @PROJECT_VERSION_MINOR@ };
constexpr int patch { @PROJECT_VERSION_PATCH@ };
}
#endif // GPX2_RASPI_READOUT_VERSION_H

128
source/gpx2-raspi-readout-program/include/gpio.h Normal file
View File

@ -0,0 +1,128 @@
#ifndef GPIO_H
#define GPIO_H
#include <vector>
#include <mutex>
#include <shared_mutex>
#include <chrono>
#include <future>
#include <map>
#include <memory>
#include <linux/gpio.h>
#include <gpiod.h>
// TODO: check correctness of mutex'
// TODO: implement and check init, step, shutdown, write functions
enum class PinBias : std::uint8_t {
OpenDrain = 0x01,
OpenSource = 0x02,
ActiveLow = 0x04,
PullDown = 0x10,
PullUp = 0x20
};
class gpio
{
public:
constexpr static auto standard_timeout = std::chrono::seconds{10};
struct event
{
enum Type
{
Invalid,
Rising,
Falling
} type{ Invalid };
std::size_t pin{};
timespec ts;
inline operator bool()
{
return type != Invalid;
}
};
struct setting
{
[[nodiscard]] auto matches(const event& e) const -> bool;
std::vector<unsigned> gpio_pins;
};
class callback
{
friend class gpio;
public:
[[nodiscard]] auto wait_async(std::chrono::milliseconds timeout)->std::future<event>;
[[nodiscard]] auto wait(std::chrono::milliseconds timeout)->event;
[[nodiscard]] auto write_async(const event& e)->std::future<bool>;
[[nodiscard]] auto write(const event& e) -> bool;
[[nodiscard]] auto read(unsigned pin_num) -> int;
callback(setting s, gpio& handler);
private:
void notify(const event& e);
setting m_setting{};
event m_event {};
std::condition_variable m_wait{};
std::mutex m_wait_mutex{};
std::shared_mutex m_access_mutex{};
gpio& m_handler;
};
gpio(std::string consumer = "gpio", std::string chipname = "gpiochip0")
: m_consumer{std::move(consumer)}
, m_chipname{std::move(chipname)}
{};
virtual ~gpio();
void start();
void stop();
void join();
[[nodiscard]] auto list_callback(setting s)->std::shared_ptr<callback>;
void remove_callback(std::size_t id);
private:
[[nodiscard]] auto setup() -> int;
[[nodiscard]] auto step() -> int;
[[nodiscard]] auto shutdown() -> int;
[[nodiscard]] auto write(const event& e) -> bool;
[[nodiscard]] auto read(unsigned pin_num) -> int;
void notify_all(event e);
std::string m_consumer;
std::string m_chipname;
const timespec c_wait_timeout{1,0};
//std::shared_ptr<::gpiod_chip> chip{nullptr};
//std::shared_ptr<::gpiod_line_bulk> lines{nullptr};
gpiod_chip* chip{nullptr};
gpiod_line_bulk* lines{nullptr};
std::map< unsigned, gpiod_line* > other_lines{}; // map of other initialized lines which are requested but have no active event listening going on
std::vector<unsigned> pins_used_by_listeners{};
//inline static std::size_t global_id_counter{ 0 };
std::size_t global_id_counter{ 0 };
std::map < std::size_t, std::shared_ptr<callback> > m_callback{};
std::future<int> m_result{};
std::chrono::microseconds m_timeout{ 10 };
std::atomic<bool> m_run{ true };
std::vector<setting> m_settings{};
};
#endif // GPIO_H

56
source/gpx2-raspi-readout-program/include/readout.h Normal file
View File

@ -0,0 +1,56 @@
#ifndef READOUT_H
#define READOUT_H
#include "gpx2.h"
#include "gpio.h"
#include <future>
#include <thread>
#include <iostream>
#include <iomanip>
#include <mutex>
#include <shared_mutex>
#include <condition_variable>
#include <chrono>
inline static void print_hex(const std::string& str) {
for (auto byte : str) {
std::cout << "0x" << std::hex << std::setw(2) << std::setfill('0') << static_cast<unsigned int>(byte) << " ";
}
std::cout << std::endl;
}
class Readout {
public:
Readout(double max_ref_diff = 100e-9, unsigned interrupt_pin = 20);
~Readout();
void stop();
private:
[[nodiscard]] auto setup()->int;
[[nodiscard]] auto read_tdc()->int;
[[nodiscard]] auto process_loop()->int;
void process_queue(bool ignore_max_queue = false);
void dump_raw_tdc();
std::unique_ptr<gpio> handler{};
std::shared_ptr<gpio::callback> callback{};
const std::chrono::milliseconds process_loop_timeout{ std::chrono::milliseconds(100) };
size_t max_queue_size{ 1000 };
size_t min_queue_size{ 50 };
const std::chrono::microseconds readout_loop_timeout{ std::chrono::microseconds(1) };
double m_max_interval{};
unsigned m_interrupt_pin{};
std::chrono::time_point<std::chrono::high_resolution_clock> start_time{};
std::chrono::time_point<std::chrono::high_resolution_clock> end_time{};
std::condition_variable queue_condition;
std::array<std::queue<SPI::GPX2_TDC::Meas>,4> tdc_stop{};
std::unique_ptr<SPI::GPX2_TDC::GPX2> gpx2{};
std::atomic<uint64_t> evt_count{};
std::atomic<bool> m_run{ true };
std::thread gpio_thread;
std::thread analysis_thread;
};
#endif // READOUT_H

10
source/gpx2-raspi-readout-program/include/version.h Normal file
View File

@ -0,0 +1,10 @@
#ifndef GPX2_RASPI_READOUT_VERSION_H
#define GPX2_RASPI_READOUT_VERSION_H
namespace gpx2_raspi_readout::CMake::Version {
constexpr int major { 1 };
constexpr int minor { 0 };
constexpr int patch { 0 };
}
#endif // GPX2_RASPI_READOUT_VERSION_H

290
source/gpx2-raspi-readout-program/src/gpio.cpp Normal file
View File

@ -0,0 +1,290 @@
#include "gpio.h"
#include <shared_mutex>
#include <vector>
#include <algorithm>
#include <chrono>
#include <future>
#include <memory>
#include <iostream>
#include <condition_variable>
#include <gpiod.h>
#include <ctime>
void gpio::start()
{
if (m_result.valid()) {
std::cout << "gpio manager already started\n";
return;
}
m_result = std::async(std::launch::async, [&] {
auto result{ setup() };
if (result != 0) {
return result;
}
while (m_run) {
if (lines != nullptr) {
result = step();
if (result != 0) {
break;
}
}
else {
std::this_thread::sleep_for(std::chrono::milliseconds(100));
}
}
return result + shutdown();
});
}
void gpio::stop()
{
m_run = false;
}
void gpio::join()
{
if (!m_result.valid())
{
return;
}
m_result.wait();
}
gpio::~gpio()
{
if (m_result.valid()) {
stop();
m_result.wait();
}
}
auto gpio::list_callback(setting s) -> std::shared_ptr<callback>
{
if (m_result.valid()) {
return nullptr;
}
m_settings.emplace_back(s);
m_callback.emplace(global_id_counter, std::make_shared<callback>(std::move(s),*this));
global_id_counter++;
return m_callback[global_id_counter - 1U];
}
void gpio::remove_callback(std::size_t id)
{
if (m_callback.find(id) == m_callback.end()) {
return;
}
m_callback.erase(id);
}
void gpio::notify_all(event e)
{
for (auto& [id, cb] : m_callback) {
cb->notify(e);
}
}
auto gpio::setting::matches(const event& e)const -> bool {
// if pin of the event is in m_setting gpio_pins list then it matches
// maybe more efficient way of doing this
return (std::find(gpio_pins.begin(), gpio_pins.end(), e.pin) != gpio_pins.end());
}
gpio::callback::callback(setting s, gpio& handler)
: m_setting{ std::move(s) }
, m_handler{ handler }
{
}
auto gpio::callback::wait_async(std::chrono::milliseconds timeout) -> std::future<event>
{
return std::async(std::launch::async, [&] {return wait(timeout); });
}
auto gpio::callback::wait(std::chrono::milliseconds timeout) -> event
{
{
std::unique_lock<std::mutex> lock{ m_wait_mutex };
if (m_wait.wait_for(lock, timeout) == std::cv_status::timeout) {
return event{};
}
}
std::unique_lock<std::shared_mutex> lock{ m_access_mutex };
return m_event;
}
auto gpio::callback::write_async(const event& e) -> std::future<bool>
{
return std::async(std::launch::async, [&] { return write(e); });
}
auto gpio::callback::write(const event& e) -> bool
{
return m_handler.write(e);
}
auto gpio::callback::read(unsigned pin_num) -> int {
return m_handler.read(pin_num);
}
void gpio::callback::notify(const event& e)
{
if (!m_setting.matches(e))
{
return;
}
std::unique_lock<std::shared_mutex> lock{ m_access_mutex };
m_event = e;
m_wait.notify_all();
}
auto gpio::setup() -> int {
chip = gpiod_chip_open_by_name(m_chipname.c_str());
if (chip==nullptr) {
std::cerr << "Open gpio chip failed" << std::endl;
return -1;
}
for (auto s : m_settings) {
for (auto pin : s.gpio_pins) {
pins_used_by_listeners.push_back(pin);
}
}
std::sort(pins_used_by_listeners.begin(), pins_used_by_listeners.end());
pins_used_by_listeners.erase(std::unique(pins_used_by_listeners.begin(), pins_used_by_listeners.end()), pins_used_by_listeners.end());
if (pins_used_by_listeners.empty()) {
return 0;
}
lines = new gpiod_line_bulk{};
gpiod_line_bulk_init(lines);
int status = gpiod_chip_get_lines(chip, pins_used_by_listeners.data(), pins_used_by_listeners.size(),lines);
if (status<0){
std::cerr << "Chip get lines failed" << std::endl;
return status;
}
status = gpiod_line_request_bulk_both_edges_events(lines, m_consumer.c_str());
if (status<0){
std::cerr << "Line request bulk both edges failed" << std::endl;
return status;
}
return 0;
}
auto gpio::step() -> int
{
auto* fired = new gpiod_line_bulk{};
gpiod_line_bulk_init(fired);
int status = gpiod_line_event_wait_bulk(lines, &c_wait_timeout, fired);
if (status <= 0){
// 0 -> timeout
// -1 -> error
delete fired;
//std::cout << "leaving step, " << status << std::endl;
return status;
}
for (unsigned i = 0; i < gpiod_line_bulk_num_lines(fired); i++){
gpiod_line* line = gpiod_line_bulk_get_line(fired, i);
gpiod_line_event gpio_e{};
status = gpiod_line_event_read(line, &gpio_e);
if (status!=0){
delete fired;
std::cout << "leaving step, line event read error" << std::endl;
return status;
}
gpio::event e;
e.pin = gpiod_line_offset(line);
e.ts = gpio_e.ts;
if (gpio_e.event_type==GPIOD_LINE_EVENT_RISING_EDGE){
e.type = event::Type::Rising;
}else if (gpio_e.event_type==GPIOD_LINE_EVENT_FALLING_EDGE){
e.type = event::Type::Falling;
}
notify_all(e);
}
delete fired;
return 0;
}
auto gpio::shutdown() -> int
{
if (lines != nullptr){
gpiod_line_request_bulk_input(lines, m_consumer.c_str());
gpiod_line_release_bulk(lines);
//delete lines;
lines = nullptr;
}
for (auto [id, ptr] : other_lines){
if (ptr != nullptr){
gpiod_line_release(ptr);
ptr = nullptr;
}
}
other_lines.clear();
if (chip != nullptr){
gpiod_chip_close(chip);
//delete chip;
chip = nullptr;
}
return 0;
}
auto gpio::write(const gpio::event& e) -> bool
{
if (!m_result.valid()) {
return false;
}
std::cout << "requested write pin " << e.pin << " to " << e.type;
//gpiod_line* line =
//gpiod_line_set_value(line, 1);
//gpiod_line_request_output();
return true;
}
auto gpio::read(unsigned pin_num) -> int
{
if (chip==nullptr) {
return -1;
}
if (std::find(pins_used_by_listeners.begin(), pins_used_by_listeners.end(), pin_num) != pins_used_by_listeners.end()) {
std::cerr << "Error: tried to read from pin that has already an active event listener." << std::endl;
m_run = false;
return -1;
}
gpiod_line* line = nullptr;
if (other_lines.count(pin_num)==0) {
//std::cout << other_lines.count(pin_num) << std::endl;
line = gpiod_chip_get_line(chip, pin_num);
if (!line) {
std::cerr << "Chip get lines failed for line " << pin_num << std::endl;
return -1;
}
int ret = gpiod_line_request_input(line, m_consumer.c_str());
if (ret < 0) {
std::cerr << "Request line as input failed" << std::endl;
gpiod_line_release(line);
return -1;
}
other_lines[pin_num] = line;
}
else {
line = other_lines.at(pin_num);
}
int val = gpiod_line_get_value(line);
if (val < 0) {
std::cerr << "Read line input failed" << std::endl;
other_lines.erase(pin_num);
gpiod_line_release(line);
return -1;
}
return val;
}

27
source/gpx2-raspi-readout-program/src/main.cpp Normal file
View File

@ -0,0 +1,27 @@
#include "readout.h"
#include <chrono>
#include <csignal>
#include <condition_variable>
#include <mutex>
constexpr double max_interval { 200e-9 }; // maximum interval between two stop bits to count as hit
//constexpr unsigned wait_timeout { 10000 }; // if no signal from detector for wait_timeout amount of time before restarting the waiting...
constexpr unsigned interrupt_pin { 20 }; // interrupt pin for the falling edge signal coming from GPX2 chip
//constexpr size_t min_buffer = 200; // minimum number of events stored in buffer
std::condition_variable main_run;
void signalHandler(int signum) {
std::cerr << "received signal " << signum << std::endl;
main_run.notify_all();
}
auto main()->int {
std::signal(SIGTERM, signalHandler);
std::signal(SIGQUIT, signalHandler);
std::signal(SIGINT, signalHandler);
Readout readout{max_interval, interrupt_pin};
std::mutex mx;
std::unique_lock<std::mutex> lock{mx};
main_run.wait(lock);
return 0;
}

249
source/gpx2-raspi-readout-program/src/readout.cpp Normal file
View File

@ -0,0 +1,249 @@
#include "readout.h"
#include "gpio.h"
#include <future>
#include <string>
#include <iostream>
#include <iomanip>
#include <queue>
#include <cmath>
#include <omp.h>
#include <chrono>
#include <csignal>
#include <algorithm>
Readout::Readout(double max_ref_diff, unsigned interrupt_pin)
: m_max_interval{max_ref_diff}
, m_interrupt_pin{interrupt_pin}
, gpio_thread{
[&] {
auto result{ setup() };
if (result != 0) {
return result;
}
while (m_run) {
result = read_tdc();
if (result != 0) {
break;
}
}
return result;
}
}
,analysis_thread{
[&] {
start_time = std::chrono::high_resolution_clock::now();
while (m_run) {
// std::this_thread::sleep_for(process_loop_timeout);
dump_raw_tdc();
// process_queue();
}
if (!tdc_stop[1].empty() && !tdc_stop[0].empty()) {
dump_raw_tdc();
//process_queue(true);
}
end_time = std::chrono::high_resolution_clock::now();
auto duration = std::chrono::duration_cast<std::chrono::microseconds>(end_time - start_time).count();
std::cerr << evt_count << " events, ";
std::cerr << duration << " ms, ";
auto rate = static_cast<double>(evt_count) / static_cast<double>(duration) * 1e6;
std::cerr << "rate is " << rate << "/s, " << rate * 60 << "/min, " << rate * 60 * 60 << "/h, " << rate * 60 * 60 * 24 << "/d, " << rate * 60 * 60 * 24 * 7 << "/w" << std::endl;
std::cerr << "non processed events in queues: " << tdc_stop[0].size() << " " << tdc_stop[1].size() << " (should not be greate than " << max_queue_size << ")" << std::endl;
return 0;
}
}{}
Readout::~Readout() {
stop();
gpio_thread.join();
analysis_thread.join();
}
void Readout::stop()
{
m_run = false;
}
auto Readout::setup()->int {
if (gpx2) {
std::cerr << "tried to create new gpx2 device but it is already created." << std::endl;
return -1;
}
gpx2 = std::make_unique<SPI::GPX2_TDC::GPX2>();
SPI::GPX2_TDC::Config conf{};
conf.loadDefaultConfig();
conf.BLOCKWISE_FIFO_READ = 1U;
conf.COMMON_FIFO_READ = 0U;
//conf.PIN_ENA_STOP3 = 0;
//conf.PIN_ENA_STOP4 = 0;
//conf.HIT_ENA_STOP3 = 0;
//conf.HIT_ENA_STOP4 = 0;
gpx2->init();
int verbosity = 0;
bool status = gpx2->write_config(conf);
std::string config = gpx2->read_config();
if (status && (config == conf.str())) {
if (verbosity > 1) {
std::cerr << "config written..." << std::endl;
}
}
else {
std::cerr << "tried to write:" << std::endl;
print_hex(conf.str());
std::cerr << "read back:" << std::endl;
print_hex(config);
std::cerr << "failed to write config!" << std::endl;
return -1;
}
handler = std::make_unique<gpio>();
gpio::setting pin_setting{};
callback = handler->list_callback(pin_setting);
handler->start();
gpx2->init_reset();
return 0;
}
auto Readout::read_tdc()->int {
// checks if data is available on the gpx2 (by checking if interrupt pin is low)
// then reads out data from the gpx2-tdc and puts it in the queue
while (callback->read(m_interrupt_pin) != 0) {
// while interrupt pin is high, do not readout (since there is no data available)
// std::this_thread::sleep_for(std::chrono::microseconds(1));
}
for (unsigned i = 0; i < 4; i++) {//why was this only 4?
auto now = std::chrono::system_clock::now();
auto measurements = gpx2->read_results();
for (unsigned j = 0; j < 4; j++) {
if (measurements[j]) {
measurements[j].ts = now;
tdc_stop[j].emplace(std::move(measurements[j]));
}
}
}
// std::cout << std::endl;
queue_condition.notify_all();
return 0;
}
void Readout::dump_raw_tdc(){
std::mutex mutex;
std::unique_lock<std::mutex> lock {mutex};
if (queue_condition.wait_for(lock,std::chrono::seconds(1))==std::cv_status::timeout) {
return;
}
std::array<std::queue<SPI::GPX2_TDC::Meas>,4> tdc_it(tdc_stop);
std::cout << std::scientific << std::setprecision(5) ; //set output to 5 decimal places.
std::cout << "\n ----- Full data set:" <<std::endl;
for (std::size_t j{0}; j<4; j++){
while(!tdc_it[j].empty()){
auto ref = static_cast<int32_t>(tdc_it[j].front().ref_index);
auto fasttime = SPI::GPX2_TDC::inPicoseconds(tdc_it[j].front());
tdc_it[j].pop();
std::cout << j << " " << ref << " " << fasttime<< " " << std::endl;
}
}
std::cout <<" ----- Matched Pairs:" <<std::endl;
for (std::size_t i{0}; i<4; i=i+2){
while(!tdc_stop[i].empty() && !tdc_stop[i+1].empty()){
auto ref0 = static_cast<int32_t>(tdc_stop[i].front().ref_index);
auto fasttime0 = SPI::GPX2_TDC::inPicoseconds(tdc_stop[i].front());
auto ref1 = static_cast<int32_t>(tdc_stop[i+1].front().ref_index);
auto fasttime1 = SPI::GPX2_TDC::inPicoseconds(tdc_stop[i+1].front());
tdc_stop[i].pop();tdc_stop[i+1].pop();
if (ref0-ref1==0) std::cout << i << " " << ref0 << " " << fasttime0<< " " << ref1 << " " << fasttime1<< " " << ref0-ref1 << " " << fasttime0-fasttime1<< std::endl;
}
}
// auto result{ setup() };
//remove remaining elements
for (std::size_t i{0}; i<4; i++){
while(!tdc_stop[i].empty()){
tdc_stop[i].pop();
}
}
gpx2->init_reset();
evt_count += 8;
return;
}
void Readout::process_queue(bool ignore_max_queue) {
// checks ref_diff between ordered tdc_stop[0] and tdc_stop[1] channels.
// Compares a few values from the queues, removes not matching timestamps and prints matching ones
std::mutex mutex;
std::unique_lock<std::mutex> lock {mutex};
if (queue_condition.wait_for(lock,std::chrono::seconds(1))==std::cv_status::timeout || (tdc_stop[0].size() < max_queue_size && tdc_stop[1].size() < max_queue_size && !ignore_max_queue)) {
return;
}
std::array<std::vector<SPI::GPX2_TDC::Meas>,4> data{};
for (std::size_t i{0}; i<4; i++){
while(tdc_stop[i].size()>min_queue_size || (ignore_max_queue && !tdc_stop[i].empty())){
data[i].emplace_back(tdc_stop[i].front());
tdc_stop[i].pop();
}
}
// at this point one queue is full and we can check the content for
std::sort(data[0].begin(), data[0].end());
std::unique(data[0].begin(), data[0].end());
std::sort(data[1].begin(), data[1].end());
std::unique(data[1].begin(), data[1].end());
auto reset_ref = [&](){return static_cast<int32_t>(data[1].front().ref_index) - static_cast<int32_t>(data[0].front().ref_index);};
while (!data[0].empty() && !data[1].empty()) {
auto ref_diff = reset_ref();
while (ref_diff > 1) {
//std::cout << "ref_diff " << ref_diff << std::endl;
data[0].erase(data[0].begin());
//evt_count += 1U;
if (data[0].empty()) {
return;
}
ref_diff = reset_ref();
}
while (ref_diff < 1) {
//std::cout << "ref_diff " << ref_diff << std::endl;
data[1].erase(data[1].begin());
//evt_count += 1U;
if (data[1].empty()) {
return;
}
ref_diff = reset_ref();
}
if (ref_diff == 0) {
auto diff = SPI::GPX2_TDC::diff(data[0].front(), data[1].front());
auto result0 = SPI::GPX2_TDC::inPicoseconds(data[0].front());
auto result1 = SPI::GPX2_TDC::inPicoseconds(data[1].front());
if (fabs(diff) < m_max_interval) {
evt_count += 1;
std::cout << std::chrono::duration_cast<std::chrono::nanoseconds>(data[0].front().ts.time_since_epoch()).count();
// std::cout << result0 << " ";
// std::cout << result1 << " ";
std::cout << " ";
std::cout << diff;
// std::cout << " " << data[0].front().ref_index << " " << data[0].front().stop_result;
// std::cout << " " << data[1].front().ref_index << " " << data[1].front().stop_result;
std::cout << "\n";
}
data[0].erase(data[0].begin());
data[1].erase(data[1].begin());
}
}
gpx2->init_reset();
}

131
source/spi/CMakeLists.txt Normal file
View File

@ -0,0 +1,131 @@
cmake_minimum_required(VERSION 3.10)
project(spi LANGUAGES CXX C)
set(PROJECT_SRC_DIR "${CMAKE_CURRENT_SOURCE_DIR}/src")
set(PROJECT_HEADER_DIR "${CMAKE_CURRENT_SOURCE_DIR}/include")
set(PROJECT_CONFIG_DIR "${CMAKE_CURRENT_SOURCE_DIR}/config")
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/../lib")
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/../lib")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/../bin")
include("${CMAKE_CURRENT_SOURCE_DIR}/cmake/version.cmake")
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED ON)
if(${BUILD_TIDY})
set(CMAKE_CXX_CLANG_TIDY
clang-tidy;
-header-filter=^global;
-checks=-*,readability-*,bugprone-*,performace-*,clang-analyzer-*,modernize-*,hicpp-*,-hicpp-vararg,-hicpp-avoid-c-arrays,-readability-magic-numbers;
)
endif(${BUILD_TIDY})
# check if Doxygen is installed (from https://vicrucann.github.io/tutorials/quick-cmake-doxygen/)
find_package(Doxygen)
if (DOXYGEN_FOUND AND BUILD_DOCS)
# set input and output files
set(DOXYGEN_IN ${CMAKE_CURRENT_SOURCE_DIR}/doxygen/Doxyfile.in)
set(DOXYGEN_OUT ${CMAKE_CURRENT_BINARY_DIR}/doxygen/Doxyfile)
# request to configure the file
configure_file(${DOXYGEN_IN} ${DOXYGEN_OUT} @ONLY)
# note the option ALL which allows to build the docs together with the application
add_custom_target( spi_doc_doxygen ALL
COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYGEN_OUT}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMENT "Generating API documentation with Doxygen"
VERBATIM )
elseif (BUILD_DOCS)
message("doxygen need to be installed to generate the doxygen documentation. for generating tree views graphviz is needed.")
else ()
message("Selected option doxygen build OFF. Doxygen will not be build.")
endif ()
add_compile_options(
-Wall
-Wextra
-Wshadow
-Wpedantic
-O3
)
configure_file(
"${PROJECT_CONFIG_DIR}/version.h"
"${PROJECT_HEADER_DIR}/version.h"
)
set(PROJECT_SOURCE_FILES
"${PROJECT_SRC_DIR}/spidevices/spidevice.cpp"
"${PROJECT_SRC_DIR}/spidevices/gpx2/gpx2.cpp"
"${PROJECT_SRC_DIR}/spidevices/gpx2/config.cpp"
)
set(PROJECT_HEADER_FILES
"${PROJECT_HEADER_DIR}/spidevices/spidevice.h"
"${PROJECT_HEADER_DIR}/spidevices/gpx2/gpx2.h"
"${PROJECT_HEADER_DIR}/spidevices/gpx2/config.h"
)
add_definitions(-Dspi_objlib_LIBRARY_EXPORT)
add_library(spi_objlib OBJECT ${PROJECT_SOURCE_FILES} ${PROJECT_HEADER_FILES})
add_library(spi SHARED $<TARGET_OBJECTS:spi_objlib>)
add_library(spi_static STATIC $<TARGET_OBJECTS:spi_objlib>)
target_include_directories(spi_objlib PUBLIC
${PROJECT_HEADER_DIR}
)
set_property(TARGET spi_objlib PROPERTY POSITION_INDEPENDENT_CODE 1)
#set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -s")
#set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -s")
set_target_properties(
spi
PROPERTIES
SOVERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}"
)
include(GNUInstallDirs)
set(SPI_PACKAGE_NAME "spi")
add_custom_target(changelog ALL COMMAND gzip -cn9 "${PROJECT_CONFIG_DIR}/changelog" > "${CMAKE_CURRENT_BINARY_DIR}/changelog.gz")
install(TARGETS spi DESTINATION lib COMPONENT "${SPI_PACKAGE_NAME}")
install(FILES ${PROJECT_HEADER_FILES} DESTINATION include COMPONENT "${SPI_PACKAGE_NAME}")
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/changelog.gz" DESTINATION "${CMAKE_INSTALL_DOCDIR}" COMPONENT "${SPI_PACKAGE_NAME}")
install(FILES "${PROJECT_CONFIG_DIR}/copyright" DESTINATION "${CMAKE_INSTALL_DOCDIR}" COMPONENT "${SPI_PACKAGE_NAME}")
set(CPACK_GENERATOR "DEB")
set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON)
set(CPACK_PACKAGE_DESCRIPTION_FILE "${PROJECT_CONFIG_DIR}/copyright")
set(CPACK_DEBIAN_PACKAGE_DEPENDS "")
set(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_CONFIG_DIR}/license")
set(CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA "${PROJECT_CONFIG_DIR}/triggers")
set(CPACK_PACKAGE_VENDOR "Marvin Peter")
set(CPACK_DEBIAN_PACKAGE_SECTION "libs")
set(CPACK_DEBIAN_PACKAGE_HOMEPAGE "https://github.com/marvin5300/SPI-TDC")
set(CPACK_PACKAGE_VERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}")
set(CPACK_PACKAGE_VERSION_MAJOR "${PROJECT_VERSION_MAJOR}")
set(CPACK_PACKAGE_VERSION_MINOR "${PROJECT_VERSION_MINOR}")
set(CPACK_PACKAGE_VERSION_PATCH "${PROJECT_VERSION_PATCH}")
set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Library for SPI control")
set(CPACK_DEBIAN_PACKAGE_DESCRIPTION " It makes connecting to SPI devices possible.
It uses the linux spidev c api.
It is licensed under the GNU Lesser General Public License version 3 (LGPL v3).")
set(CPACK_DEBIAN_PACKAGE_MAINTAINER "Marvin Peter <marvin.peter@physik.uni-giessen.de>")
set(CPACK_PACKAGE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/../packages/")
set(CPACK_STRIP_FILES "${CMAKE_CURRENT_BINARY_DIR}/../lib/${SPI_PACKAGE_NAME}")
set(CPACK_PACKAGE_NAME "${SPI_PACKAGE_NAME}")
set(CPACK_SOURCE_PACKAGE_FILE_NAME "${SPI_PACKAGE_NAME}")
set(CPACK_SYSTEM_NAME "Linux-armv7l")
set(CPACK_TOPLEVEL_TAG "Linux-armv7l")
set(CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS ON)
include(CPack)

3
source/spi/cmake/version.cmake Normal file
View File

@ -0,0 +1,3 @@
set(PROJECT_VERSION_MAJOR 1)
set(PROJECT_VERSION_MINOR 0)
set(PROJECT_VERSION_PATCH 0)

5
source/spi/config/changelog Normal file
View File

@ -0,0 +1,5 @@
spi (1.0.0) ; urgency=low
* Initial release.
-- Marvin Peter <marvin.peter@physik.uni-giessen.de> Fri, 12 Feb 2021 19:20:00 +0100

24
source/spi/config/copyright Normal file
View File

@ -0,0 +1,24 @@
Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
#Upstream-Name: spi
#Source: https://github.com/marvin5300/GPX2-TDC
Files: *
Copyright: 2021 Marvin Peter <marvin.peter@physik.uni-giessen.de>
License: GPL-3.0+
License: GPL-3.0+
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
.
This package is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
.
On Debian systems, the complete text of the GNU General
Public License version 3 can be found in "/usr/share/common-licenses/GPL-3".

24
source/spi/config/license Normal file
View File

@ -0,0 +1,24 @@
Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
#Upstream-Name: spi
#Source: https://github.com/marvin5300/GPX2-TDC
Files: *
Copyright: 2021 Marvin Peter <marvin.peter@physik.uni-giessen.de>
License: GPL-3.0+
License: GPL-3.0+
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
.
This package is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
.
On Debian systems, the complete text of the GNU General
Public License version 3 can be found in "/usr/share/common-licenses/GPL-3".

1
source/spi/config/triggers Normal file
View File

@ -0,0 +1 @@
activate-noawait ldconfig

10
source/spi/config/version.h Normal file
View File

@ -0,0 +1,10 @@
#ifndef SPI_H
#define SPI_H
namespace SPI::CMake::Version {
constexpr int major{ @PROJECT_VERSION_MAJOR@ };
constexpr int minor{ @PROJECT_VERSION_MINOR@ };
constexpr int patch{ @PROJECT_VERSION_PATCH@ };
}
#endif // SPI_H

2495
source/spi/doxygen/Doxyfile.in Normal file
View File

File diff suppressed because it is too large Load Diff

62
source/spi/include/spidevices/gpx2/config.h Normal file
View File

@ -0,0 +1,62 @@
#ifndef CONFIG_H
#define CONFIG_H
#include <stdint.h>
#include <string>
namespace SPI {
namespace GPX2_TDC {
struct Config {
// reg_addr 0
uint8_t PIN_ENA_RSTIDX : 1;
uint8_t PIN_ENA_DISABLE : 1;
uint8_t PIN_ENA_LVDS_OUT : 1;
uint8_t PIN_ENA_REFCLK : 1;
uint8_t PIN_ENA_STOP4 : 1;
uint8_t PIN_ENA_STOP3 : 1;
uint8_t PIN_ENA_STOP2 : 1;
uint8_t PIN_ENA_STOP1 : 1;
// reg_addr 1
uint8_t HIGH_RESOLUTION : 2;
uint8_t CHANNEL_COMBINE : 2;
uint8_t HIT_ENA_STOP4 : 1;
uint8_t HIT_ENA_STOP3 : 1;
uint8_t HIT_ENA_STOP2 : 1;
uint8_t HIT_ENA_STOP1 : 1;
// reg_addr 2
uint8_t BLOCKWISE_FIFO_READ : 1;
uint8_t COMMON_FIFO_READ : 1;
uint8_t LVS_DOUBLE_DATA_RATE : 1;
uint8_t STOP_DATA_BITWIDTH : 2;
uint8_t REF_INDEX_BITWIDTH : 3;
// reg_addr 3
uint8_t REFCLK_DIVISIONS_LOWER; // (Lower byte)
// reg_addr 4
uint8_t REFCLK_DIVISIONS_MIDDLE; // (Middle byte)
// reg_addr 5
uint8_t REFCLK_DIVISIONS_UPPER : 4; // (Upper bits)
// reg_addr 6
uint8_t LVDS_TEST_PATTERN : 1;
// reg_addr 7
uint8_t REFCLK_BY_XOSC : 1;
uint8_t LVDS_DATA_VALID_ADJUST : 2;
// reg_addr 16
uint8_t CMOS_INPUT : 1;
Config();
void loadDefaultConfig();
double refclk_freq{5e6};
uint32_t refclk_divisions();
std::string str() const;
};
}
}
#endif // !CONFIG_H

119
source/spi/include/spidevices/gpx2/gpx2.h Normal file
View File

@ -0,0 +1,119 @@
#ifndef GPX2_H
#define GPX2_H
#include "config.h"
#include "../spidevice.h"
#include <stdint.h>
#include <limits>
#include <string>
#include <vector>
#include <queue>
#include <chrono>
#include <cmath>
namespace SPI {
namespace GPX2_TDC {
static constexpr std::uint8_t spiopc_power = 0x30; // Power on reset and stop measurement
static constexpr std::uint8_t spiopc_init = 0x18; // Initializes Chip and starts measurement
static constexpr std::uint8_t spiopc_write_config = 0x80; // Write to configuration register X=0..17
static constexpr std::uint8_t spiopc_read_results = 0x60; // Read opcode for result and status register X=8..31
static constexpr std::uint8_t spiopc_read_config = 0x40; // Readout of configuration register X=0..17
enum class StopChannel{
channel_0,
channel_1,
channel_2,
channel_3
};
struct Meas{
enum Status{
Invalid,
Valid
}status{Invalid};
StopChannel stop_channel{};
uint32_t ref_index{};
uint32_t stop_result{};
double lsb_ps{1.};
double refclk_freq{std::numeric_limits<double>::quiet_NaN()};
std::chrono::time_point<std::chrono::system_clock> ts{};
operator bool();
auto operator < (const Meas& other) const -> bool;
auto operator > (const Meas& other) const -> bool;
auto operator == (const Meas& other) const -> bool;
auto operator != (const Meas& other) const -> bool;
auto operator <= (const Meas& other) const -> bool;
auto operator >= (const Meas& other) const -> bool;
};
constexpr double pico_second { 1e-12 }; // value for one pico second in seconds
constexpr double max_plausible_interval { };
inline static auto diff(const SPI::GPX2_TDC::Meas& first, const SPI::GPX2_TDC::Meas& second) -> double{
if (first.status == SPI::GPX2_TDC::Meas::Invalid || second.status == SPI::GPX2_TDC::Meas::Invalid || first.refclk_freq != second.refclk_freq || first.refclk_freq == 0.) {
return std::nan("invalid");// std::cout << "measurement not valid" << std::endl;
}
// int32_t is possible since maximum number of bits in register is 24
int32_t ref0{ static_cast<int32_t>(first.ref_index) };
int32_t ref1{ static_cast<int32_t>(second.ref_index) };
double refclk_period = 1 / first.refclk_freq;
double stop_first = first.lsb_ps * static_cast<double>(first.stop_result);
double stop_second = second.lsb_ps * static_cast<double>(second.stop_result);
double result{};
result = refclk_period * static_cast<double>(ref1 - ref0);
result += (stop_second - stop_first) * pico_second;
return result;
}
inline static auto inPicoseconds(const SPI::GPX2_TDC::Meas& first) -> double{
if (first.status == SPI::GPX2_TDC::Meas::Invalid || first.refclk_freq == 0.){
return std::nan("invalid");// std::cout << "measurement not valid" << std::endl;
}
// int32_t is possible since maximum number of bits in register is 24
// int32_t ref0{ static_cast<int32_t>(first.ref_index) };
// double refclk_period = 1 / first.refclk_freq;
double stop_first = first.lsb_ps * static_cast<double>(first.stop_result);
double result{};
// result = refclk_period * static_cast<double>(ref0);
result = (stop_first) * pico_second;
return result;
}
/*inline double operator-(const Meas& first, const Meas& second){
if (!first || !second || first.refclk_freq != second.refclk_freq || first.refclk_freq==0.){
std::cout << "measurement not valid" << std::endl;
}
double refclk_period = 1/first.refclk_freq;
double stop_first = first.lsb_ps*first.stop_result;
double stop_second = second.lsb_ps*second.stop_result;
double result{};
result = refclk_period*static_cast<double>(second.ref_index - first.ref_index);
result += (stop_second - stop_first)*pico_second;
return result;
}*/
class GPX2 : public spiDevice {
public:
using spiDevice::spiDevice;
void init(std::string busAddress = "/dev/spidev0.0", std::uint32_t speed = 61035, Mode mode = SPI::Mode::spi_mode_1, std::uint8_t bits = 8);
void power_on_reset();
void init_reset();
[[nodiscard]] auto write_config()->bool;
[[nodiscard]] auto write_config(const Config& data)->bool;
[[nodiscard]] auto read_config()->std::string;
[[nodiscard]] auto get_filtered_intervals(double max_interval)->std::vector<double>;
[[nodiscard]] auto read_results()->std::vector<Meas>;
private:
[[nodiscard]] auto write_config(const std::string& data)->bool;
[[nodiscard]] auto write_config(const std::uint8_t reg_addr, const std::uint8_t data)->bool;
[[nodiscard]] auto read_config(const std::uint8_t reg_addr)->std::uint8_t;
std::queue<Meas> readout_buffer;
Config config;
};
}
}
#endif // !GPX2_H

73
source/spi/include/spidevices/spidevice.h Normal file
View File

@ -0,0 +1,73 @@
#ifndef SPI_DEVICE_H
#define SPI_DEVICE_H
#include <string>
#include <vector>
namespace SPI {
enum class Mode {
spi_mode_0,
spi_mode_1,
spi_mode_2,
spi_mode_3
};
class spiDevice {
public:
spiDevice() = default;
virtual ~spiDevice();
auto init(std::string busAddress = "/dev/spidev0.0", std::uint32_t speed = 61035, Mode mode = Mode::spi_mode_0, uint8_t bits = 8)->bool;
/**
* Writes to physical device
* @param command
* @param data
* @return
*/
auto write(const std::uint8_t command, const std::string& data)->bool;
/**
* Reads from physical device
* @param command
* @param nBytes
* @return
*/
auto read(const std::uint8_t command, const std::size_t nBytes)->std::string;
/**
* Writes one byte to a register
* @param regAddr
* @param byte
* @return
*/
//virtual auto writeReg(const std::uint8_t regAddr, const std::uint8_t byte)->bool = 0;
/**
* Reads one byte from a register
* @param regAddr
* @param byte
* @return
*/
//virtual auto readReg(const std::uint8_t regAddr, std::uint8_t& byte)->bool = 0;
virtual auto devicePresent()->bool;
protected:
static auto spi_xfer(const int handle, const uint32_t speed, const uint8_t mode, const uint8_t bits, const uint8_t* tx, uint8_t* rx, uint32_t nBytes)->int;
int fHandle{ -1 };
unsigned long int fNrBytesWritten{ 0 };
unsigned long int fNrBytesRead{ 0 };
static unsigned long int fGlobalNrBytesWritten;
static unsigned long int fGlobalNrBytesRead;
static std::vector<spiDevice*> fGlobalDeviceList;
static unsigned int fNrDevices;
std::uint8_t fAddress{};
std::uint8_t fMode{};
std::uint8_t fNrBits{};
std::uint32_t fSpeed{};
};
}
#endif // SPI_DEVICE_H

10
source/spi/include/version.h Normal file
View File

@ -0,0 +1,10 @@
#ifndef SPI_H
#define SPI_H
namespace SPI::CMake::Version {
constexpr int major{ 1 };
constexpr int minor{ 0 };
constexpr int patch{ 0 };
}
#endif // SPI_H

4
source/spi/spidevices.h Normal file
View File

@ -0,0 +1,4 @@
#ifndef _SPIDEVICES_H_
#define _SPIDEVICES_H_
#include "spidevices/gpx2/gpx2.h"
#endif // !_SPIDEVICES_H_

169
source/spi/src/spidevices/gpx2/config.cpp Normal file
View File

@ -0,0 +1,169 @@
#include "spidevices/gpx2/config.h"
#include <cstdint>
#include <string>
using namespace SPI::GPX2_TDC;
// default config defined by the author of this program
Config::Config()
: PIN_ENA_RSTIDX{ 0 }
, PIN_ENA_DISABLE{ 0 }
, PIN_ENA_LVDS_OUT{ 0 }
, PIN_ENA_REFCLK{ 0 }
, PIN_ENA_STOP4{ 0 }
, PIN_ENA_STOP3{ 0 }
, PIN_ENA_STOP2{ 0 }
, PIN_ENA_STOP1{ 0 } // reg_addr 0
, HIGH_RESOLUTION{ 0 }
, CHANNEL_COMBINE{ 0 }
, HIT_ENA_STOP4{ 0 }
, HIT_ENA_STOP3{ 0 }
, HIT_ENA_STOP2{ 0 }
, HIT_ENA_STOP1{ 0 } // reg_addr 1
, BLOCKWISE_FIFO_READ{ 0 }
, COMMON_FIFO_READ{ 0 }
, LVS_DOUBLE_DATA_RATE{ 0 }
, STOP_DATA_BITWIDTH{ 0 }
, REF_INDEX_BITWIDTH{ 0 } // reg_addr 2
, REFCLK_DIVISIONS_LOWER{ 0 } // reg_addr 3
, REFCLK_DIVISIONS_MIDDLE{ 0 } // reg_addr 4
, REFCLK_DIVISIONS_UPPER{ 0 } // reg_addr 5
, LVDS_TEST_PATTERN{ 0 } // reg_addr 6
, REFCLK_BY_XOSC{ 0 }
, LVDS_DATA_VALID_ADJUST{ 0 } // reg_addr 7
, CMOS_INPUT{ 0 } // reg_addr 16
{}
void Config::loadDefaultConfig() {
// reg_addr 0
PIN_ENA_DISABLE = 0;
PIN_ENA_RSTIDX = 0;
PIN_ENA_LVDS_OUT = 0;
PIN_ENA_REFCLK = 0;
PIN_ENA_STOP4 = 1;
PIN_ENA_STOP3 = 1;
PIN_ENA_STOP2 = 1;
PIN_ENA_STOP1 = 1;
// reg_addr 1
//constexpr std::uint8_t high_resolution_mode_0 = 0;
constexpr std::uint8_t high_resolution_mode_2 = 2;
//constexpr std::uint8_t channel_combine_none = 0;
//constexpr std::uint8_t channel_combine_pulsewidth = 2;
constexpr std::uint8_t channel_combine_pulsedistance = 1;
HIGH_RESOLUTION = high_resolution_mode_2;
CHANNEL_COMBINE = channel_combine_pulsedistance;
HIT_ENA_STOP4 = 1;
HIT_ENA_STOP3 = 1;
HIT_ENA_STOP2 = 1;
HIT_ENA_STOP1 = 1;
// reg_addr 2
constexpr std::uint8_t stop_data_bitwidth_3 = 0b11;
constexpr std::uint8_t ref_index_bitwidth_2 = 0b010;
BLOCKWISE_FIFO_READ = 1;
COMMON_FIFO_READ = 1;
LVS_DOUBLE_DATA_RATE = 0;
STOP_DATA_BITWIDTH = stop_data_bitwidth_3;
REF_INDEX_BITWIDTH = ref_index_bitwidth_2;
// reg_addr 3
constexpr std::uint8_t refclk_div_200k_lower = 0x40;
REFCLK_DIVISIONS_LOWER = refclk_div_200k_lower; // 5MHz clk => T = 200ns = 200,000ps
// reg_addr 4
constexpr std::uint8_t refclk_div_200k_middle = 0x0d;
REFCLK_DIVISIONS_MIDDLE = refclk_div_200k_middle; // set REFCLK_DIVISIONS to 200,000 for LSB to be 1ps
// reg_addr 5
constexpr std::uint8_t refclk_div_200k_upper = 0x03;
REFCLK_DIVISIONS_UPPER = refclk_div_200k_upper; // 200,000 = 0x030d40
// reg_addr 6
LVDS_TEST_PATTERN = 0;
// reg_addr 7
REFCLK_BY_XOSC = 1; // use external quartz, ignore external clock => 1
LVDS_DATA_VALID_ADJUST = 1;
// reg_addr 16
CMOS_INPUT = 1;
}
// pack bits in the correct order and return a string.
auto Config::str() const->std::string {
std::string data;
uint8_t byte;
byte = static_cast<uint8_t>(PIN_ENA_RSTIDX << 7U);
byte |= static_cast<uint8_t>(PIN_ENA_DISABLE << 6U);
byte |= static_cast<uint8_t>(PIN_ENA_LVDS_OUT << 5U);
byte |= static_cast<uint8_t>(PIN_ENA_REFCLK << 4U);
byte |= static_cast<uint8_t>(PIN_ENA_STOP4 << 3U);
byte |= static_cast<uint8_t>(PIN_ENA_STOP3 << 2U);
byte |= static_cast<uint8_t>(PIN_ENA_STOP2 << 1U);
byte |= static_cast<uint8_t>(PIN_ENA_STOP1);
data += static_cast<char>(byte);
byte = static_cast<uint8_t>(HIGH_RESOLUTION << 6U);
byte |= static_cast<uint8_t>(CHANNEL_COMBINE << 4U);
byte |= static_cast<uint8_t>(HIT_ENA_STOP4 << 3U);
byte |= static_cast<uint8_t>(HIT_ENA_STOP3 << 2U);
byte |= static_cast<uint8_t>(HIT_ENA_STOP2 << 1U);
byte |= static_cast<uint8_t>(HIT_ENA_STOP1);
data += static_cast<char>(byte);
byte = static_cast<uint8_t>(BLOCKWISE_FIFO_READ << 7U);
byte |= static_cast<uint8_t>(COMMON_FIFO_READ << 6U);
byte |= static_cast<uint8_t>(LVS_DOUBLE_DATA_RATE << 5U);
byte |= static_cast<uint8_t>(STOP_DATA_BITWIDTH << 3U);
byte |= static_cast<uint8_t>(REF_INDEX_BITWIDTH);
data += static_cast<char>(byte);
data += static_cast<uint8_t>(REFCLK_DIVISIONS_LOWER);
data += static_cast<uint8_t>(REFCLK_DIVISIONS_MIDDLE);
data += static_cast<uint8_t>(REFCLK_DIVISIONS_UPPER);
byte = static_cast<uint8_t>(0b110U << 5U);
byte |= static_cast<uint8_t>(LVDS_TEST_PATTERN << 4U);
data += static_cast<char>(byte);
byte = static_cast<uint8_t>(REFCLK_BY_XOSC << 8U);
byte |= static_cast<uint8_t>(0b1U << 7U);
byte |= static_cast<uint8_t>(LVDS_DATA_VALID_ADJUST << 4U);
byte |= static_cast<uint8_t>(0b0011U);
data += static_cast<char>(byte);
constexpr uint8_t reg_default_08 = 0b10100001U;
constexpr uint8_t reg_default_09 = 0b00010011U;
constexpr uint8_t reg_default_10 = 0b00000000U;
constexpr uint8_t reg_default_11 = 0b00001010U;
constexpr uint8_t reg_default_12 = 0b11001100U;
constexpr uint8_t reg_default_13 = 0b11001100U;
constexpr uint8_t reg_default_14 = 0b11110001U;
constexpr uint8_t reg_default_15 = 0b01111101U;
data += static_cast<char>(reg_default_08);
data += static_cast<char>(reg_default_09);
data += static_cast<char>(reg_default_10);
data += static_cast<char>(reg_default_11);
data += static_cast<char>(reg_default_12);
data += static_cast<char>(reg_default_13);
data += static_cast<char>(reg_default_14);
data += static_cast<char>(reg_default_15);
byte = ((CMOS_INPUT) << 2U);
data += static_cast<char>(byte);
return data;
}
uint32_t Config::refclk_divisions(){
uint32_t dat{};
dat |= (static_cast<uint32_t>(REFCLK_DIVISIONS_UPPER) << 16U);
dat |= (static_cast<uint32_t>(REFCLK_DIVISIONS_MIDDLE) << 8U);
dat |= static_cast<uint32_t>(REFCLK_DIVISIONS_LOWER);
return dat;
}

226
source/spi/src/spidevices/gpx2/gpx2.cpp Normal file
View File

@ -0,0 +1,226 @@
#include "spidevices/gpx2/gpx2.h"
#include "spidevices/gpx2/config.h"
#include <iostream>
#include <iomanip>
#include <cmath>
using namespace SPI::GPX2_TDC;
void GPX2::init(std::string busAddress, std::uint32_t speed, Mode mode, std::uint8_t bits) {
spiDevice::init(busAddress, speed, mode, bits);
power_on_reset();
}
void GPX2::power_on_reset() {
write(spiopc_power, "");
}
void GPX2::init_reset() {
write(spiopc_init, "");
}
auto GPX2::write_config()->bool {
return write_config(config);
}
auto GPX2::write_config(const Config& data)->bool {
config = data;
return write_config(data.str());
}
auto GPX2::write_config(const std::string& data)->bool {
if (data.size() != 17) {
std::cerr << "write all of the config only possible if 17 bytes of data provided\n";
return false;
}
return write(spiopc_write_config, data);
}
auto GPX2::write_config(const std::uint8_t reg_addr, const std::uint8_t data)->bool {
if (reg_addr > 16) {
std::cerr << "write config is only possible on register addr. 0...16\n";
return false;
}
std::string conf_str = std::string({ static_cast<char>(data) });
return write(spiopc_write_config | reg_addr, conf_str);
}
auto GPX2::read_config()->std::string {
return read(spiopc_read_config, 17);
}
auto GPX2::read_config(const std::uint8_t reg_addr)->std::uint8_t {
if (reg_addr > 16) {
std::cerr << "read config is only possible on register addr. 0...16\n";
return 0;
}
std::string data = read(spiopc_read_config | reg_addr, 1);
if (data.empty()) {
return 0;
}
return data[0];
}
auto GPX2::read_results()->std::vector<Meas> {
std::string readout = read(spiopc_read_results | 0x08U, 24);
/*for (unsigned i = 0; i < 24; i++) {
std::cout << std::setw(2) << std::dec << i << ": " << std::hex << std::setw(2) << std::setfill('0') << static_cast<unsigned>(readout[i]) << std::endl;
}*/
/*uint32_t test_ref_index = 0U;
uint32_t test_stop_result = 0U;
test_ref_index = (static_cast<uint32_t>(readout[0]) << 16U);
test_ref_index |= (static_cast<uint32_t>(readout[1]) << 8U);
test_ref_index |= static_cast<uint32_t>(readout[2]);
test_stop_result = (static_cast<uint32_t>(readout[3]) << 16U);
test_stop_result |= (static_cast<uint32_t>(readout[4]) << 8U);
test_stop_result |= static_cast<uint32_t>(readout[5]);
std::cout << "first 6 byte: " <<std::dec<< test_ref_index << " " << test_stop_result << std::endl;;*/
std::vector<Meas> measurements{};
if (readout.empty()) {
return measurements;
}
double lsb_ps = 1e12 / (config.refclk_divisions() * config.refclk_freq);
for (std::size_t i = 0; i < 4; i++) {
Meas meas;
meas.status = Meas::Valid;
meas.lsb_ps = lsb_ps;
meas.refclk_freq = config.refclk_freq;
meas.ref_index = 0U;
meas.stop_result = 0U;
meas.ref_index = (static_cast<uint32_t>(readout[i * 6U]) << 16U);
meas.ref_index |= (static_cast<uint32_t>(readout[i * 6U + 1U]) << 8U);
meas.ref_index |= static_cast<uint32_t>(readout[i * 6U + 2U]);
meas.stop_result = (static_cast<uint32_t>(readout[i * 6U + 3U]) << 16U);
meas.stop_result |= (static_cast<uint32_t>(readout[i * 6U + 4U]) << 8U);
meas.stop_result |= static_cast<uint32_t>(readout[i * 6U + 5U]);
if (meas.ref_index == 0xffffffU && meas.stop_result == 0xffffffU) {
meas.status = Meas::Invalid;
}
//std::cout << std::setw(2) << std::setfill('0') << std::dec << "meas_stop_" << i << ": ref_index=" << meas.ref_index << " stop_result=" << meas.stop_result << std::endl;
//<< " refclk_freq=" <<meas.refclk_freq << " lsb_ps=" << meas.lsb_ps << std::endl;
measurements.push_back(meas);
}
//std::cout << std::endl;
return measurements;
}
auto GPX2::get_filtered_intervals(double max_interval) -> std::vector<double>{
//std::cout << "gpio " << event.pin << " falling edge" << std::endl;
std::vector<double> diffs{};
std::vector<std::vector<SPI::GPX2_TDC::Meas> > readout;
for (int i = 0; i < 4; i++) {
readout.push_back(read_results());
if (readout.size() < 4) {
std::cerr << "readout vector has less than 4 channels";
continue;
}
}
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
double some_readout = 0;
SPI::GPX2_TDC::Meas val0;
SPI::GPX2_TDC::Meas val1;
val0 = readout[i][j];
val1 = readout[i][(j + 1) % 4];
if (val0.status == SPI::GPX2_TDC::Meas::Invalid || val1.status == SPI::GPX2_TDC::Meas::Invalid) {
continue;
}
some_readout = diff(val0, val1); // combinations are possible for 1+2, 2+3, 3+4, 1
//std::cout << "first loop: i=" << i << " j="<< j << " " << some_readout << std::endl;
if (j % 2 == 1) {
some_readout = -some_readout;
}
if (fabs(some_readout) < max_interval) {
diffs.push_back(some_readout);
}
}
}
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 4; j++) {
double some_readout = 0;
SPI::GPX2_TDC::Meas val0;
SPI::GPX2_TDC::Meas val1;
val0 = readout[i][j];
val1 = readout[i + 1][(j + 1) % 4];
if (val0.status == SPI::GPX2_TDC::Meas::Invalid || val1.status == SPI::GPX2_TDC::Meas::Invalid) {
continue;
}
some_readout = diff(val0, val1); // combinations are possible for 1+2, 2+3, 3+4, 1+4
//std::cout << "second loop: i=" << i << "j=" << j << " " << some_readout << std::endl;
if (j % 2 == 1) {
some_readout = -some_readout;
}
if (fabs(some_readout) < max_interval) {
diffs.push_back(some_readout);
}
val0 = readout[i+1][j];
val1 = readout[i][(j + 1) % 4];
some_readout = diff(readout[i + 1][j], readout[i][(j + 1) % 4]); // combinations are possible for 1+2, 2+3, 3+4, 1+4
//std::cout << "second loop: i=" << i << "j=" << j << " " << some_readout << std::endl;
if (j % 2 == 1) {
some_readout = -some_readout;
}
if (fabs(some_readout) < max_interval) {
diffs.push_back(some_readout);
}
}
}
//std::cout << std::endl;
return diffs;
}
Meas::operator bool()
{
return status != Invalid;
}
bool Meas::operator < (const Meas& other) const
{
if (ref_index < other.ref_index) {
return true;
}
if (ref_index == other.ref_index) {
return stop_result < other.stop_result;
}
return false;
}
bool Meas::operator > (const Meas& other) const
{
if (ref_index > other.ref_index) {
return true;
}
if (ref_index == other.ref_index) {
return stop_result > other.stop_result;
}
return false;
}
auto Meas::operator == (const Meas& other) const -> bool
{
return (ref_index == other.ref_index && stop_result == other.stop_result);
}
auto Meas::operator != (const Meas& other) const -> bool
{
return !(*this == other);
}
auto Meas::operator >= (const Meas& other) const -> bool
{
return (*this == other) || (*this > other);
}
auto Meas::operator <= (const Meas& other) const -> bool
{
return (*this == other) || (*this < other);
}

184
source/spi/src/spidevices/spidevice.cpp Normal file
View File

@ -0,0 +1,184 @@
#include "spidevices/spidevice.h"
#include <string>
#include <vector>
#include <algorithm>
#include <iostream>
#include <memory>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/types.h>
#include <linux/spi/spidev.h>
using namespace SPI;
unsigned int spiDevice::fNrDevices{ 0 };
unsigned long int spiDevice::fGlobalNrBytesWritten{ 0 };
unsigned long int spiDevice::fGlobalNrBytesRead{ 0 };
std::vector<spiDevice*> spiDevice::fGlobalDeviceList;
spiDevice::~spiDevice() {
if (fHandle > 0) {
fNrDevices--;
}
close(fHandle);
std::vector<spiDevice*>::iterator it;
it = std::find(fGlobalDeviceList.begin(), fGlobalDeviceList.end(), this);
if (it != fGlobalDeviceList.end()) {
fGlobalDeviceList.erase(it);
}
}
auto spiDevice::init(std::string busAddress, std::uint32_t speed, Mode mode, uint8_t bits)->bool {
fNrBits = bits;
fSpeed = speed;
// enum class spi_mode -> csyle spi_mode
switch (mode) {
case Mode::spi_mode_0:
fMode = SPI_MODE_0;
break;
case Mode::spi_mode_1:
fMode = SPI_MODE_1;
break;
case Mode::spi_mode_2:
fMode = SPI_MODE_2;
break;
case Mode::spi_mode_3:
fMode = SPI_MODE_3;
break;
default:
fMode = SPI_MODE_0;
break;
}
fHandle = open(busAddress.c_str(), O_RDWR);
if (fHandle < 0) {
std::cerr << "Could not open spi device" << std::endl;
return false;
}
fNrDevices++;
fGlobalDeviceList.push_back(this);
/*
* spi mode
*/
int ret{};
ret = ioctl(fHandle, SPI_IOC_WR_MODE, &fMode);
if (ret == -1) {
std::cerr << "can't set spi mode" << std::endl;
return false;
}
ret = ioctl(fHandle, SPI_IOC_RD_MODE, &fMode);
if (ret == -1) {
std::cerr << "can't get spi mode" << std::endl;
}
/*
* bits per word
*/
ret = ioctl(fHandle, SPI_IOC_WR_BITS_PER_WORD, &bits);
if (ret == -1) {
std::cerr << "can't set bits per word" << std::endl;
}
ret = ioctl(fHandle, SPI_IOC_RD_BITS_PER_WORD, &bits);
if (ret == -1) {
std::cerr << "can't get bits per word" << std::endl;
return false;
}
/*
* max speed hz
*/
ret = ioctl(fHandle, SPI_IOC_WR_MAX_SPEED_HZ, &fSpeed);
if (ret == -1) {
std::cerr << "can't set max speed hz" << std::endl;
}
ret = ioctl(fHandle, SPI_IOC_RD_MAX_SPEED_HZ, &fSpeed);
if (ret == -1) {
std::cerr << "can't get max speed hz" << std::endl;
}
return true;
}
auto spiDevice::devicePresent()->bool {
return false;
}
auto spiDevice::write(const std::uint8_t command, const std::string& data)->bool {
if (fHandle==-1) {
std::cerr << "tried to write to spi without initialising (calling init(..) first)." << std::endl;
return false;
}
const std::size_t n = data.size() + 1;
auto txBuf{ std::make_unique<std::uint8_t[]>(n) };
auto rxBuf{ std::make_unique<std::uint8_t[]>(n) };
txBuf[0] = command;
for (std::size_t i = 1; i < n; i++) {
txBuf[i] = data[i - 1];
}
auto status = spi_xfer(fHandle, fSpeed, fMode, fNrBits, txBuf.get(), rxBuf.get(), n);
if (status != static_cast<decltype(status)>(n)) {
std::cerr << "transfer size mismatch: spi_xfer returned " << status << " bytes transfered but should write" << n << " bytes." << std::endl;
return false;
}
return true;
}
auto spiDevice::read(const std::uint8_t command, const std::size_t nBytes)->std::string {
if (fHandle == -1) {
std::cerr << "tried to read from spi without initialising." << std::endl;
return "";
}
const std::size_t n = nBytes + 1;
auto txBuf{ std::make_unique<std::uint8_t[]>(n) };
auto rxBuf{ std::make_unique<std::uint8_t[]>(n) };
txBuf[0] = command;
auto status = spi_xfer(fHandle, fSpeed, fMode, fNrBits, txBuf.get(), rxBuf.get(), n);
if (status != static_cast<decltype(status)>(n)) {
std::cerr << "transfer size mismatch: spi_xfer returned " << status <<" bytes but should read" << n <<" bytes." << std::endl;
return "";
}
std::string data;
for (std::size_t i = 1; i < n; i++) {
data += rxBuf[i];
}
return data;
}
auto spiDevice::spi_xfer(const int handle, const uint32_t speed, const uint8_t mode, const uint8_t bits, const uint8_t* tx, uint8_t* rx, uint32_t nBytes)->int {
int ret{};
uint16_t delay{};
spi_ioc_transfer tr = {
(unsigned long)tx, // tx_buf
(unsigned long)rx, // rx_buf
nBytes, // len
speed, // speed_hz
delay, // delay_usecs
bits, // bits_per_word
0, // cs_change
bits, // rx_nbits
bits, // tx_nbits
mode // mode
//0 // cs
/**
* Note:
* Depending on spidev version there are different parameters in struct
*/
};
ret = ioctl(handle, SPI_IOC_MESSAGE(1), &tr);
if (ret < 1) {
std::cerr << "can't send spi message" << std::endl;
}
return ret;
}