12.2.8 Timer-Driven Conversions

Participant

Dear Carmine Noviello-san,

Thank you for the great e-book of mastering stm32 book.
Let me ask you one question in section “12.2.8 Timer-Driven Conversions”.

There is sentence in book as below,

“If you run the example, you can see that ever three
seconds the DMA completes the transfer and the convCompleted variable is set: this causes that the
three conversions are printed on the UART2 interface”

If my understanding correct, every 1 seconds (due to timer) ADC invoked and 3 acquisitions from DMA data register performed completed before next 1 seconds. is it right understanding ? because text says “ever three
seconds the DMA completes the transfer and the convCompleted variable is set”. this is a bit not what I expected.

Thank you for your support in advance.

Kaneko