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# 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.
# 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>
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
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