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.
| 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 |