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frackers
frackers
Senior
October 10, 2018
Question

CubeMX 4.27.0 RCC_OSC_OUT assigned in HSE Bypass mode on F769ii

  • October 10, 2018
  • 2 replies
  • 1011 views

My reading of the specs for the F7 series is that if an external clock is supplied to RCC_OSC_IN and HSE Bypass mode is selected then RCC_OSC_OUT is available as a general GPIO pin.

CubeMX seems to want to assign it so I loose a pin!!

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2 replies

frackers
frackersAuthor
Senior
October 10, 2018

Never mind - read the wrong paragraph...

Tesla DeLorean
Tesla DeLorean
Guru
October 10, 2018

Should generally be usable, but might behave oddly with code that doesn't understand/use BYPASS, perhaps the System Loader?

I have concerns with L0 parts, a 32 MHz input clock does not permit BYPASS mode, where as an 8 MHz one works as expected.

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