AEK-POW-BMS63EN as a Master Board in the daisy chain

[MaraLo]

Hi,

I would like to check if STM AEK-POW-BMS63EN board can be used as a first board in the daisy chain with the setup where we have external MCU (for example STMF103RB) and AEK-COM-ISOSPI1?

In the datasheet you describe difference between 'Master' and 'Slave' in the following way:

and all your AEK-POW-BMS63EN comes with SPEIN pin pull-down via R20:

Can you please clarify if the usage of AEK-POW-BMS63EN in the single BMS setup with external MCU is even possible?

BR,

MaraLo

[Max VIZZINI · Accepted solution]

hi,

Yes, for a single node you can use STM32 SPI to AEK-COM-ISOSPI1 and connect the AEK-COM-ISOSPI1 to the AEK-POW-BMS63EN.

Be careful that endianess of STM32 and SPC5 is different (big endian).

Best Regards,

AutoDevKit Team