STM32 HW TIMER + DMA + DAC

[xkisahero]

Hi everyone,

I'm developing a medical device. I need to generate alarm waveforms that meet the Standard IEC 60601-1-8.

I need to set the sampling frequency to 20000 Hz, so I need a hardware timer. It is preferable to use DMA function, then send alarm wave data from memory to DAC.

I already have the alarm waveform data in memory , and I can use DAC. I checked a lot of information, but I still can't use the hardware timer. In particular, the combination of hardware timer and DMA and DAC makes me confused.

I also tried stm32cube Hal library in zephyr. But I don't know how to combine Hal library interrupts with zephyr.

We ported the code of STM32 from keil platform to zephyr platform because Nordic uses zephyr. We hope that the code can run on the same platform. Now, other functions have been ported, only this one left.

Please help me, thank you.