I am working on project that which I need to employ two adc channels with different sampling rates over STM32F4x. The first channel where I need to monitor DC voltage (Vbat) with minimum sampling rate. While, the other channel I will use to pick up ECK with sampling rate about 1Khz. I have a problem with the CPU load which I am intending to solve using the DMA.
My problem is that I need only DMA for the ADC channel while the I dont it for monitoring the VBAT. How I will be able to use 2 channels of ADC with different sampling rates?
