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MPC5777C Flexcan Module

Question asked by Gurumurthy Kola on Jun 24, 2015
Latest reply on Dec 4, 2015 by Petr Stancik



I am working with MPC5777C controller and observed an issue in FlexCAN-A module.


FlexCAN-A is put into freeze mode automatically when the CODE filed of Message buffer[0] is written with the value 0b1100 for transmitting a CAN frame.


Please find attched snapshot of Flexcan-A registers.


As per the attached register map,

The flag ERRSR[FANCEIF] is set. This is causing FlexCAN-A to go Freeze Mode as MECR[NCEFAFRZ] is set.


Please let me know why the flag FANCEIF is set and what are the actions causing this flag to set.


Also Please let me know how to disable the Error Detection and Correction module. If I disable this module what are the consequence effects?


Thanks in Advance.


Best Regards,

Gurumurthy K