STM32F3 ADC-DMA restarting

[michaelweilguni9]

Posted on August 06, 2015 at 14:24

Hello!

I configured the ADC with DMA to fill a table in RAM. After

ADC_StartConversion (ADC1);

I use

while (!DMA_GetFlagStatus (DMA1_FLAG_TC1)) ;

until the DMA is full. This works fine for one complete transfer. But now I want to do the same again. How can I reset the DMA to overwrite the table with new ADC data? Thanks!

[Tesla DeLorean]

Posted on August 06, 2015 at 14:59

If you're configuring the DMA in Normal mode, the very least you'll need to do is reconfigure the DMA again before starting the ADC.

[Nickname5522_O]

Posted on August 06, 2015 at 16:26

Hi weilguni.michael.001,

You can also configure the DMA in circular mode. -Shahrazad-