[Ovmsdev] e: OVMS Poller module/singleton

[Chris Box]

On 2025-01-23 12:11, Developer From Jokela via OvmsDev wrote:

> E (445282) can: can2: intr=240803 rxpkt=242887 txpkt=6 
> errflags=0x22401c02 rxerr=0 txerr=0 rxinval=0 rxovr=0 txovr=0 txdelay=0 
> txfail=0 wdgreset=0 errreset=0

Ok, now putting Developer From Jokela's post together with Michael's I 
think I understand what this is telling us.

First, E means error.

The presence of this line in the log means there has been an error on 
can bus 2. The values given appear to be the current values of some 
counters.

The code is in can/src/can.cpp. This has basic deduplication by summing 
most of the counters and errflags, and only logging if this changes. 
Interestingly both of us saw can2 errors in pairs: one with 
errflags=0x23401c01 and one with 0x22401c02. In my case these were 
either 0 or 10 ms apart.

The flags appear to derive from mcp2515/src/mcp2515.cpp but it's not 
clear to me what they mean.

> OVMS# can can2 status
> CAN:       can2
> Mode:      Active
> Speed:     500000
> DBC:       none
> 
> Interrupts:              291197
> Rx pkt:                  293642
> Rx ovrflw:                    0
> Tx pkt:                       6
> Tx delays:                    0
> Tx ovrflw:                    0
> Tx fails:                     0
> 
> Err flags: 0x01000001
> Rx err:                       0
> Tx err:                       0
> Rx invalid:                   0
> Wdg Resets:                   0
> Wdg Timer:                    9 sec(s)
> Err Resets:                   0

Question: If the log tells us that can2 errors have occurred, why does 
"can can2 status" report zero values for errors?

Chris
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