Pour la config simple du DAC avec le DMA et TIM
https://deepbluembedded.com/stm32-dac-sine-wave-generation-stm32-dac-dma-timer-example/
Un peu plus compliqué
https://www.eevblog.com/forum/microcontrollers/stm32-how-can-i-go-about-outputting-audio-to-a-speaker/
Le manuel utilisateur HAL
https://www.disca.upv.es/aperles/arm_cortex_m3/llibre/st/STM32F439xx_User_Manual/index.html
La datasheet du STM32F446
https://www.st.com/en/microcontrollers-microprocessors/stm32f446re.html
https://www.st.com/resource/en/datasheet/stm32f446re.pdf
Petite chaîne YouTube sur les STM32
https://www.youtube.com/playlist?list=PLaSBRRMONZaaTOlA4T7OZw6fIEsmMM9fa
Wave Player Doc
http://www.bdtic.com/download/ST/AN4058.pdf
External Interupt
https://deepbluembedded.com/stm32-external-interrupt-example-lab/