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SPI SCLK voltage 320mv ?

Question asked by cheung.to.001 on May 28, 2013
Latest reply on May 29, 2013 by Clive One
hi I am new to STM32F103, i did try a SPI examples on STM32F103 , put a probe on SCLK pin out and see the clock out is about 320mV, as SCLK being set as 'GPIO_Mode_AF_PP', is that voltage correct ?

many thanks!

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