diff --git a/README.md b/README.md
index bced521..a211241 100644
--- a/README.md
+++ b/README.md
@@ -7,8 +7,10 @@ Files for building readout software for the TDC-GPX2 from ScioSense.
| ------ | ----------- |
| 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 |
+| scripts | python script makes a histogram of the output. requires matplotlib|
+| data | empty folder for output|
+
Readout via SPI:
Required:
@@ -16,9 +18,22 @@ Required:
- up-to-date c++ compiler (C++17 compatible), tested with clang 11 and newer
How to build:
-- This software packages is build with cmake
+- requires cmake
- builds the gpx2 library and optionally the readout program
-
-Readout via LVDS using an FPGA:
-coming soon
+```sh
+cd source
+mkdir build
+cd build
+cmake ..
+cmake --build .
+```
+
+to run the code:
+```
+/// outputs to stdout
+./bin/readout
+
+///redirect to file
+./bin/readout > ../data/test_out.data
+```