Hello,
I am working with an STM32 G4 series microcontroller and using the ADC in DMA mode to handle continuous conversions. My goal is to SET a GPIO (debug pin) at the start of an ADC conversion and RESET it at the end of the conversion.
Currently, I am able to RESET the GPIO pin in the HAL_ADC_ConvCpltCallback() function, which is called after the conversion completes. However, since DMA mode doesn't involve regular polling or interrupt-based conversions for the start, I am unsure where to place the GPIO SET code.
Here are the details of my setup:
- ADC Trigger Source: TIM2
- TIM2 Configuration: FCLK = 60 MHz, PSC = 0, ARR = 469 (Triggering ADC at ~128 kHz).
- DMA Mode: Circular, 12-bit resolution.
Is there a recommended way to toggle or set a debug pin when the ADC conversion process starts? Would I need to modify the HAL driver, or is there a way to do this using timer-based callbacks or HAL functions?
Any guidance, examples, or best practices would be greatly appreciated.
Thank you!
