Example3 for CRC driver on XMEGA-A3BU Xplained Documentation

Introduction

This simple example shows how to use the CRC module driver on a DMA transaction.

Main Files

• crc.c CRC driver implementation
• crc.h CRC driver definitions
• example3.c example application

Device Info

All AVR XMEGA AU devices with a CRC module can be used. This example have been tested with the following setup:

• XMEGA-A3BU Xplained

Description of the example

The example will calculate the checksum for a data buffer and append it to the buffer. Then it will setup the CRC module for a DMA transaction, and then start a DMA transfer between two internal memory areas, and upon completion heck that the checksum generated for the transfer is zero.

Dependencies

This example depends on the following modules:

• CRC module driver
• Direct Memory Access controller (DMA)
• General Purpose Input/Output for LED output
• Programmable Multilevel Interrupt Controller for interrupt handling

Compilation info

This software was written for the GNU GCC. Other compilers may or may not work.

Contact Information

For further information, visit Microchip.