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STM32F7 MCO problem

Question asked by Mucit23 on Feb 3, 2016
Latest reply on Feb 7, 2016 by ault.matthew
hi all

I want to run MCO1 clock output. (PA8)

I tried the hal_rcc_mcoconfig function. But I could not run. I can't see any signal with oscilloscope. 

This is MCO settings code
HAL_RCC_MCOConfig(RCC_MCO1,RCC_MCO1SOURCE_PLLCLK,RCC_MCO_DIV4);

PLLCLK=216Mhz, MCO Div 4
Output = 216 / 4 = 54

MCO output should be 54Mhz

What is the problem?

Thanks

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