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USBPD CC orientation STM32G071RB

josemdq
Visitor

Hi, I am troubleshooting a custom board using USBPD as sink.

 

It only negotiates a PDO on one orientation of the USBC connector.

Checked with an oscilloscope and I see waveform going to CC1 on the orientation that works , naturally, and changing orientation I see a waveform going to CC2 but it does not negotiate on this side.

 


I know the signal goes to CC2's pin. The pin is configured in STM32CubeIDE as UCPD_CC2 and set to analog mode.

 

The cable detection feature also does not work to detect dettach events.

Any advice appreciated. Using 4.1.0 TCPP library version. 

 

 

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