FlexCan Loopback

Location: examples/PlatformSpecific/SOMRT1061/FlexcanLoopback

Overview

This example has been ported from the NXP Freescale Software Library (FSL).

The flexcan_loopback_functional example shows how to use the loopback test mode to debug your CAN Bus design:

To demonstrates this example, only one board is needed. The example will config one FlexCAN Message Buffer to Rx Message Buffer and the other FlexCAN Message Buffer to Tx Message Buffer with same ID. After that, the example will send a CAN Message from the Tx Message Buffer to the Rx Message Buffer throuth internal loopback interconnect and print out the Message payload to terminal.

NXP SDK version

• Version: 2.16.000

Hardware requirements

• DEV-SOMRT1061
• Personal Computer
• Serial terminal program connected to the DEV-SOMRT1061 RS-232 port

Board settings

No special settings are required.

Running the demo

Consider special errata 005829 feature, the 1st valid MB should be used as reserved one. The TX MB number will change from 8 to 9, while RX MB number will change from 9 to 10 When the example runs successfully, following information can be seen on the OpenSDA terminal:

==FlexCAN loopback functional example -- Start.==
 
 
 
Send message from MB9 to MB10
 
tx word0 = 0x11223344
 
tx word1 = 0x55667788
 
 
 
Receved message from MB10
 
rx word0 = 0x11223344
 
rx word1 = 0x55667788
 
 
==FlexCAN loopback functional example -- Finish.==