Error in recovery from BUSOFF
Information:
Type :: BUG
Status :: OPENED
Assigned to ::
Description:
In can_bsp.v there is an error:
present:
assign error_status = extended_mode? ((rx_err_cnt >= error_warning_limit) | (tx_err_cnt >= error_warning_limit)) :
((rx_err_cnt >= 9'd96) | (tx_err_cnt >= 9'd96));
must be:
assign error_status = extended_mode? ((rx_err_cnt >= error_warning_limit) | (tx_err_cnt >= error_warning_limit) | node_bus_off) : ((rx_err_cnt >= 9'd96) | (tx_err_cnt >= 9'd96) | node_bus_off);
It affects on recovery from BUSOFF: in BUSOFF, when error status bit is cleared (by counting down tx_err_cnt to value=95), error warning interrupt is generated, but clear of error status bit in accordance to SJA1000 datasheet must be done after recovery from BUSOFF, not in BUSOFF.
Comments:
No comments yet...
Post a comment:
Login to post comments!