Add (hardware) production tests for the TK-1 and TP-1 (#69)

* ch552 firmware: add ch55x support files directly

* Add sdcc compiler to docker image, for building CH552 firmware

* Rework production test script

* Add menu-based test runner
* Rewrite production test flows as lists of individual tests
* Add both production flows and manual tests to menu

* Switch to using included binaries

* production test: Update message format
* test_txrx_touchpad: Retry if device communications fail
* production test: put all binaries in binaries/ folder
* binaries/top.bin: replace broken binary

* flash_check: Check for explicit flash IDs

* Document most test procedures

* Test plan documentation

* Sample udev rules

* Production test: allow external references to be overridden

* Remove outdated descriptions

* Correct shebang

* Update shebangs to comply with PEP 394

Change the python scripts to call python instead of python3, as this
works cross platform. See:
https://peps.python.org/pep-0394/#for-python-script-publishers

* Move production test to higher-level directory

* Clarify production test setup

* Move USB C connector test to separate directory

Co-authored-by: Michael Cardell Widerkrantz <mc@tillitis.se>

contrib/99-tillitis.rules

@@ -0,0 +1,7 @@
+# CH552 bootloader (for unprogrammed CH552 chips)
+SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ATTR{idVendor}=="4348", ATTR{idProduct}=="55e0", MODE="0666", GROUP="dialout"
+
+# TP-1 programmer
+SUBSYSTEMS=="hidraw", KERNEL=="hidraw*", MODE="0666", GROUP="dialout"
+ATTRS{idVendor}=="cafe", MODE="0660", GROUP="dialout"
+

contrib/Dockerfile

@@ -38,6 +38,7 @@ RUN apt-get -qq update -y \
                verilator \
                vim \
                xdot \
+               sdcc \
     && rm -rf /var/lib/apt/lists/*