53.5.4.4.1 Filtering for Debug Messages

Filtering for debug messages is done by configuring one Standard / Extended Message ID Filter Element for each of the three debug messages. To enable a filter element to filter for debug messages SFEC / EFEC has to be programmed to “111”. In this case fields SFID1 / SFID2 and EFID1 / EFID2 have a different meaning. While SFID2 / EFID2[10:9] controls the debug message handling state machine, SFID2 / EFID2[5:0] controls the location for storage of a received debug message.

When a debug message is stored, neither the respective New Data flag nor MCAN_IR.DRX are set. The reception of debug messages can be monitored via RXF1S.DMS.

Table 53-4. Example Filter Configuration for Debug Messages
Filter

Element

SFID1[10:0]

EFID1[28:0]

SFID2[10:9]

EFID2[10:9]

SFID2[5:0]

EFID2[5:0]

0 ID debug message A 1 11 1101
1 ID debug message B 2 11 1110
2 ID debug message C 3 11 1111