Using the DMA to thansfer data between peripherals

Official Hardware Classic Zero
1

Hi,

I am working on a project, on which a little help would be appreciated!

I would like to create a data logger with a 16 bit ADC connected to the SPI. The sampling rate has to be at least 30 kHz and i need to record 1 sec of data. To save the data i'm using a FRAM memory which is connected by SPI to my Zero. So i was wondering if it's possible to use the DMA to get the data in the ADC and send direct to the FRAM memory at high rates.

I read in the data sheet of the SAMD21 that the transfer between peripherals is possible using de DMA but i have no idea how to do it.

Thanks for your help.

2

Hi pedrohenriquefguerra,

There are some excellent examples of using DMA transfer with the SAMD21 on manitou48's github page, located here: GitHub - manitou48/ZERO.