When first loading with CLion only activate one cMake profile for loading everything for the first time.
gcc
arm-non-eabi-gcc
cMake
Install brew: https://brew.sh/index_de, then run:
brew install gcc-arm-embedded
brew install cmake
Try with Arduino mega with example code from TMC2209 library each stepper driver
If not working with Arduino, test after taking each of those steps: - Check each connection - Make sure tx and rx are correct - Use different stepper driver - Use different cable to computer - Replace resistor - Try on different computer
If it works with the arduino, connections are right, try with pico again, but with commit 208c23bc8ce1775b5c6087e88812553b228f1036 If it works on that commit but not currently the code is probably wrong. If it does not work on that commit try: - Replacing the pico - Use different cable to computer - Use different computer