19.8.5 Quick Start Guide for Using DMA with SERCOM SPI

The supported board list:

  • SAM D21 Xplained Pro

  • SAM R21 Xplained Pro

  • SAM L21 Xplained Pro

  • SAM L22 Xplained Pro

  • SAM DA1 Xplained Pro

  • SAM C21 Xplained Pro

This quick start will transmit a buffer data from master to slave through DMA. In this use case the SPI master will be configured with the following settings on SAM Xplained Pro:

  • Master Mode enabled

  • MSB of the data is transmitted first

  • Transfer mode 0

  • SPI MUX Setting E

  • 8-bit character size

  • Not enabled in sleep mode

  • Baudrate 100000

  • GLCK generator 0

The SPI slave will be configured with the following settings:

  • Slave mode enabled

  • Preloading of shift register enabled

  • MSB of the data is transmitted first

  • Transfer mode 0

  • SPI MUX Setting E

  • 8-bit character size

  • Not enabled in sleep mode

  • GLCK generator 0

Note that the pinouts on other boards may different, see next sector for details.