Status 3 - Communication timeout

[wiktork]

Hi, 

I want to establish communication ( via TPL) between S32K144 -> MC33664 -> MC33771C but i only get Status Error 3 - Communication timeout. (I checked that MC33771C is awake.)


I'm using Simulink project provided by NXP - bms_s32k_mc33772c_tpl which i have edited to get only Stack and Cell Voltages. 

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Has anyone come across same issue?

Using oscilloscope i saw that CSB_TX pin is always HIGH. Shouldn't it have been switching LOW - HIGH to send data?

[mariuslucianand]

Hello @wiktork ,

Could you please be more specific regarding the setup you are using, and which boards?

The model is supposed to work over TPL1 of the S32K144EVB + FRDMDUAL33664EVB setup. Are you using this setup for the BMU? Or do you have another board? I would suggest double-checking the schematics with the pins of the SPI Config blocks.

Regards,

Marius