I am making this call:  if(HAL_SPI_Receive_DMA(&hspi3, &aRecvBuffer[0],3)!= HAL_OK)inside an external GPIO interrupt handler that gets called every 20 us. It is used to read data from an external ADC. I noticed that this dma transfer works well only ...

I am trying read continuously from an external ADC. I want to use DMAMUX to do an SPI read from the ADC via SPI RX (MISO) without interrupting the MCU. I have an external data ready signal that gets low whenever data is ready. I want to use this exte...

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