Application wont start on new MCU

RE: Application wont start on new MCU

Kazi Afroza Sultana — Tue, 29 Apr 2025 14:00:57 GMT

Hello,

Adding this CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y made the sample wrks on output board and made the output ogf bøinky sample on termina, proves the debug error was related to low frequency clock as board doesnt have any LFXO.

I am not sure about the new error, maybe you can set all the configuration of RC (calibration, accuracy and ensuring the calibration is always on) and try the process again.

CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y
CONFIG_CLOCK_CONTROL_NRF_K32SRC_500PPM=y
CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC_CALIBRATION=y
CONFIG_CLOCK_CONTROL_NRF_CALIBRATION_LF_ALWAYS_ON=y

RE: Application wont start on new MCU

Adam W — Wed, 23 Apr 2025 17:28:21 GMT

I Added CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y to prj.conf and the application is running. Thank you! However, connecting with debugger fail with following error in file cbprintf_packaged.c:

RE: Application wont start on new MCU

Kazi Afroza Sultana — Wed, 23 Apr 2025 10:17:03 GMT

If I understand correctly, your blinky sample is not showing any output when you try to run it on custom board.

Do you have any low frequency external crystal (LFXO) on your custom board? If you have then it needs to connect with correct capacitors.

Otherwise, you can use internal RC oscillator by setting this configuration

CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y

RE: Application wont start on new MCU

Adam W — Tue, 22 Apr 2025 10:39:17 GMT

Yes, sample works on DK

RE: Application wont start on new MCU

Kazi Afroza Sultana — Tue, 22 Apr 2025 09:35:03 GMT

Hello,

Did the sample work (seeing output on output terminal) on DK and not on your custom board?