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<p id="v1reply-intro">On 2025-01-23 12:11, Developer From Jokela via OvmsDev wrote:</p>
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<div>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</div>
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<p>Ok, now putting Developer From Jokela's post together with Michael's I <span style="text-decoration: underline;">think</span> I understand what this is telling us.</p>
<p>First, E means error.</p>
<p>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.</p>
<p>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.</p>
<p>The flags appear to derive from mcp2515/src/mcp2515.cpp but it's not clear to me what they mean.</p>
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<div>OVMS# can can2 status</div>
<div>CAN: can2</div>
<div>Mode: Active</div>
<div>Speed: 500000</div>
<div>DBC: none</div>
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<div>Interrupts: 291197</div>
<div>Rx pkt: 293642</div>
<div>Rx ovrflw: 0</div>
<div>Tx pkt: 6</div>
<div>Tx delays: 0</div>
<div>Tx ovrflw: 0</div>
<div>Tx fails: 0</div>
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<div>Err flags: 0x01000001</div>
<div>Rx err: 0</div>
<div>Tx err: 0</div>
<div>Rx invalid: 0</div>
<div>Wdg Resets: 0</div>
<div>Wdg Timer: 9 sec(s)</div>
<div>Err Resets: 0</div>
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<div>Question: If the log tells us that can2 errors have occurred, why does "can can2 status" report zero values for errors?</div>
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<p>Chris</p>
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