Dear ST,
As you can see from the title we have issues with our SPI connection to the BMS board.
We wired everything properly to the BMS connector, checked all the connections, on the MCU-C4mini shorted the JP pins (JP1 and JP2 and JP3 1-2, JP4,JP5,JP12,JP13).
We also flashed the pre-built project from AutoDevkit studio (AEK-MCU-C4MINI - AEK_POW_BMSCCTX_GUI_application for discovery) to the MCU.
Followed all the steps.
We didn't connect any thermistors, and we only have 4, 3.2V LiFePo4 batteries.
On the BMS, only the LEDS D2, D8(Blue) and D9 were lit up ~~ we assume the SPI connection is not being established correctly. We hooked up the SPI lines to a osciloscope, please find attached our readings. If needed I can also send a additional osciloscope reading picture.
The yellow line is supposed to be the CLK line, we measured from the tiny peak to peak freq of 5MHz, the freq of the whole clock frame was 10kHz.
Please advise how to continue with troubleshooting.
Best regards,
Gabrijel Vincek
