About almost_linear

almost_linear · 2019-10-14

Hi all,I am wondering whether it is possible to maintaining ADC(+DMA1 on AHB1) operation while clock switching on STM32L4. I am clocking the STM32L4 via HSE+PLL and the ADC from the PLLSAI1 (set to 40MHz).Is it remotely possible to switch from HSE+PL...

almost_linear · 2019-10-16

/* Switch from HSE+PLL to HSE only */ LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSE); /* Wait till System clock is ready */ while(LL_RCC_HSE_IsReady() != 1){ } LL_FLASH_SetLatency(LL_FLASH_LATEN...

almost_linear · 2019-10-14

Thanks for your input guys.I am taking care not to violate the ADC clock & sampling/convert timings.From a first pass it would seem to work but only if I go:HSE+PLL(80MHz)-> HSE(16MHz) -> HSE-PLL (16MHz)Best guess at the moment is that I have an issu...

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Maintaining ADC operation while dynamically clock switching on STM32L4

Re: Maintaining ADC operation while dynamically clock switching on STM32L4

Re: Maintaining ADC operation while dynamically clock switching on STM32L4