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GPIO speed settings

Question asked by obid.matic on Jun 16, 2016
Latest reply on Jun 16, 2016 by waclawek.jan

I would like to ask if speed setting of a pin in GPIO->OSPEEDR register is relevant also if a pin is configured in input/alternate mode? Or is this setting relevant only for output mode?

I am asking specifically for SPI clock pin, which has an alternate function mode. Should I set it to high speed or leave it on default low speed?