About CChan.19

CChan.19 · 2023-01-02

I am using STM32H743XI to capture a image sensor signal by using ADC and DMA.The image sensor signal is an analog signal following a 2.5MHz clock.I planed to use ADC and DMA to capture an image frame in a memory buffer.The size of the buffer is 268x1...

CChan.19 · 2023-01-03

The ADC+DMA will be started in the beginning of the image frame.There is a signal to indicate the start of the image frame.The ADC DMA will be restarted after the completion of the previous DMAand in the beginning of the image frames.I tried to trigg...

CChan.19 · 2023-01-03

I mean the Timer8 used to trigger ADC is in 2.5MHz. The Timer8 is still keeping the same triggering frequency.I only reduce the pixel frequency (frame rate) of the image sensor.

CChan.19 · 2023-01-03

Thanks for your suggestion very much. But this example is using ADC and interrupt.Do you suggest that ADC+Timer+interrupt is faster than ADC+DMA+Timer?I thought DMA can improve the overall performance. Am I wrong?Chih-Wei Chang

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STM32H743XI ADC DMA speed problem.

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