Stm32f407ve ADC+DMA used 1KHz sin is not read evenly when reading the reason

Stm32f407ve used ADC+DMA used 1KHz sin is not read evenly when reading the reason

External 8MHz crystal and UART asynchronous use

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Guru

You don't look to be pacing with a TIM, assume that you are saturating the USART.

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Associate II

I did not use the TIM. How to fix if USART is saturated? The code using USART was uploaded as a photo attachment.

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