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STM32G071RB USBPD Source auto send Source Cap

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Associate III

STM32G071RB USBPD Source auto send Source Cap when start debug: after reset, I'm not connect cable to C-Type port, I click start debug ( ST-Link ), I send about 50 packet of source

Please see in trace and config in attach file

14 REPLIES 14

Did you connect the EZ-PD analyzer? Is it a side effect of this tool which leads to CC detection on G0?

I flashed in my side your application into on my board and I don't have CC detection at all:

0693W000001tDfQQAU.png

no connect is same, it's automatic go to PE task.

please see in my picture: the R4, R5, R7, R8 is already removed, but Q1 Q2 is not. Is this make affected to CC line when I not control FRSTXx line ?

no connect is same, it's automatic go to PE task.

please see in my picture: the R4, R5, R7, R8 is already removed, but Q1 Q2 is not. Is this make affected to CC line when I not control FRSTXx line ?

FRTSTXx lines will not affect CC lines. Could you please dump the UCPD1 registers to check the status of CC lines? Did you manage to probe CC lines and to check the CC lines level?0693W000001tFXEQA2.png

I think the problem is Q1,Q2, after remove, It not send source cap