Quectel EM20 MBIM
bjorn at mork.no
Tue Jun 25 14:28:22 UTC 2019
Sebastian Sjoholm <sebastian.sjoholm at gmail.com> writes:
> [25 Jun 2019, 15:47:49] [Debug] [/dev/cdc-wdm0] Sent message (translated)...
> <<<<<< Header:
> <<<<<< length = 16
> <<<<<< type = open (0x00000001)
> <<<<<< transaction = 1
> <<<<<< Contents:
> <<<<<< max control transfer = 4096
> [25 Jun 2019, 15:47:49] [Debug] [/dev/cdc-wdm0] Received message...
>>>>>>> length = 16
>>>>>>> data = 01:00:00:80:10:00:00:00:01:00:00:00:02:00:00:00
That's weird. I don't think I've ever seen an error response to OPEN
before. No idea why.... The description of status 2 is "The operation
failed (a generic failure)." and that does not help much ;-)
Maybe it didn't like the 4k message size? Is that consistent with the
MBIM descriptor? Could you provide the full "lsusb -vd 2c7c:0620"
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