Open Internet by MindsNet

Resolving I2S + DMA Audio Capture Issues on STM32H7

A developer is experiencing issues with I2S + DMA audio capture on the STM32H7 microcontroller, where the audio buffer remains filled with zeros despite correct configuration and no HardFaults. The issue persists after verifying memory domains, data cache coherency, initialization order, NVIC interrupts, and DMA triggering. The developer seeks clues on potential hardware protections or MPU configurations that might prevent DMA from writing to the audio buffer.

Engineering, Core Engineering, Electrical Engineering