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USB PD Dead Battery Issue

xufl
Visitor
  • My STM32H533VE works as PD Sink.
  • We connected CC1/CC2 with DBCC1/DBCC2 (as AN5225), STM32 cannot power up with a USB PD adapter. The adapter supplies power for ~20ms then stops the supplying.
  • If I remove the long time initialization code (LSE initialization), system can boot up and USB PD works fine (PDO can switch).

Is this normal? if yes, I may move the LSE initialization later.

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