STM32 ADC Complete Guidance: Polling, Interrupt, and DMA Modes.

[@douglasrom40]

Congrats!!! Smooth explanation.

[@ЕвгенийШепард-р2х]

Great Explanation!

[@steppeschool3629]

Thanks

[@venkygoud7421]

Nice video,great explanation

[@steppeschool3629]

Glad you liked it!

[@dangabbay4910]

In your interrupt mode example you call HAL_ADC_Start_IT() only once outside the infinite loop. Why does it continue to sample? Aren't supposed to call it multiple times? Please explain.

[@dangabbay4910]

I guess this is because you have "Continous Conversion Mode" enabled. But how do you determine the sampling rate in this case?

[@steppeschool3629]

it depends on the timer prescaler and the sampling time you set. For each channel, there is a parameter you can set to control the sampklging rate.

[@CLGilbert]

Is it OK to cast a *uint_16 to a *uint_32 and pass it to Start_DMA? Does the function understand that the buffer is really only 4 bytes and not 8 bytes?

[@steppeschool3629]

in that case, I guess you need to specify the memory width to 4 bytes, not 2 bytes.

[@CLGilbert]

​@@steppeschool3629yes. I noticed now you set the DMA length to half word.