Re: [PATCH v2] can: mcba_usb: Fix termination command argument

[Marc Kleine-Budde]

On 25.11.2022 00:25:03, Yasushi SHOJI wrote:
> Microchip USB Analyzer can activate the internal termination resistors
> by setting the "termination" option ON, or OFF to to deactivate them.
> As I've observed, both with my oscilloscope and captured USB packets
> below, you must send "0" to turn it ON, and "1" to turn it OFF.
> 
> From the schematics in the user's guide, I can confirm that you must
> drive the CAN_RES signal LOW "0" to activate the resistors.
> 
> Reverse the argument value of usb_msg.termination to fix this.
> 
> These are the two commands sequence, ON then OFF.
> 
> > No.     Time           Source                Destination           Protocol Length Info
> >       1 0.000000       host                  1.3.1                 USB      46     URB_BULK out
> >
> > Frame 1: 46 bytes on wire (368 bits), 46 bytes captured (368 bits)
> > USB URB
> > Leftover Capture Data: a80000000000000000000000000000000000a8
> >
> > No.     Time           Source                Destination           Protocol Length Info
> >       2 4.372547       host                  1.3.1                 USB      46     URB_BULK out
> >
> > Frame 2: 46 bytes on wire (368 bits), 46 bytes captured (368 bits)
> > USB URB
> > Leftover Capture Data: a80100000000000000000000000000000000a9
> 
> Signed-off-by: Yasushi SHOJI <yashi@xxxxxxxxxxxxxxx>

Applied to linux-can.

Thanks,
Marc

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