Hello,
HW was late and I assembled a PCB over the weekend. The ST link connected without any problems and MBED studio also detected the connected target - the last good news.
But the test program (LED flashing only) did not start. I using STM32L071KB without external crystal and without external source CLK (no place) - so I want to use internal oscillator HSI.
I added the mbed_app.json file to the root to force the MCU to use HSI:
Without success.
Next, based on the discussion in this thread
I have tried to add recommended code to system_clock.c, which is in
stm32customtargets/TARGET_STM32L0/TARGET_GENERIC_STM32L071KB
Again without success.
I have no idea where the problem is…
BR Lukas