Low power modes on STM32L4 series MCU

[Vvenk.1]

Hi,

Below is my requirement:

1. Need to send a DAC sample every 2ms (on 32KHZ clock)
2. Every 12 sec will do an access to external flash to copy a block of memory (on HSI clock)

how can i accomplish this? am new to microcontroller, can anyone help me with some link/ tutorial on this.

Regards,

Venkatesh

[KnarfB]

A tiny example using a timer driven DMA triggering DAC is this: https://m0agx.eu/2019/03/30/generating-signals-with-stm32l4-timer-dma-and-dac/

This works also in sleep mode where the MCU core is halted except for interrupt handling.

The block copy from flash could be done in the circular DMA (half-)completion handlers.

[Imen.D]

Hello @Vvenk.1​ ,

You can get inspired from the DAC example for your board within STM32CubeL4 package and refer to the STM32L4-DAC training and

AN3126 Application note Audio and waveform generation using the DAC in STM32 products

Hope this helps you.

Imen