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2 years, 1 month ago.
Nucleo program sometimes doesn't start at startup
I am using two nucleo K432LC based motorcontrollers. The are connected on the same CAN bus with a raspberry pi and mcp2515 can controller.
The firmware for the motorcontroller is ready but when i power the motorcontrollers sometimes the first nucleo doenst start his program and the LD3 led blink 4 times slow and 4 times fast. However the powerstartup of the buck converter is ok. After a manuel reset the nucleo everthing is fine. The problem always occur with the first nucleo even if i switch the nucleo so i am think it has nothing to do with the motorcontroller PCB.
Can it be a CAN conflict with the raspberry pi at startup? The CAN id of the bad nucleo is 1. I have also no clue what the Led blink pattern means.
Has anyone some ideas?