On 08.09.2022 21:57:16, Marc Kleine-Budde wrote:
> > Thanks for your work on this! May I ask why Phase Seg2 / 2 is chosen?
[...]
> And I tested with SJW=max from mcp251x (not the mcp251xfd) with SJW=max
> to a peak USB adapter with SJW=1 - the peak adapter fails to receive CAN
> frames:
> With SJW = Phase Seg2 / 2, it works.
Correction:
My test:
TX (mcp2515, 20 MHz OSC) -> RX (PEAK USB)
Is broken [1] if the PEAK USB uses SJW==1, independent of the SJW of the
mcp2515 (the sender).
The test works if the PEAK USB uses SJW=PhaseSeg2/2.
regards,
Marc
[1] The PEAK USB fails to receive CAN frames with certain contents:
fails: aaa#aa.00.00.55.00.55.ab.55
works: aaa#aa.00.00.55.00.55.aa.55
--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
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Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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