This is an embedded usb serial port in a radio receiver which
works in MS Windows10 and I was hoping to write some control
routines for a Raspberry Pi running buster and it does the
following:
Sep 22 20:17:15 rpi2 kernel: [551843.541477] usb 1-1.2: new full-speed USB
device number 6 using dwc_otg
Sep 22 20:17:16 rpi2 kernel: [551843.674681] usb 1-1.2: not running at top
speed; connect to a high speed hub
Sep 22 20:17:16 rpi2 kernel: [551843.684432] usb 1-1.2: New USB device found,
idVendor=0c26, idProduct=002b
Sep 22 20:17:16 rpi2 kernel: [551843.684444] usb 1-1.2: New USB device strings:
Mfr=1, Product=2, SerialNumber=3
Sep 22 20:17:16 rpi2 kernel: [551843.684452] usb 1-1.2: Product: IC-R30
Sep 22 20:17:16 rpi2 kernel: [551843.684460] usb 1-1.2: Manufacturer: Icom Inc.
Sep 22 20:17:16 rpi2 kernel: [551843.684468] usb 1-1.2: SerialNumber: IC-R30
16002557
Sep 22 20:17:16 rpi2 kernel: [551843.727911] cdc_acm 1-1.2:1.0: Zero length
descriptor references
Sep 22 20:17:16 rpi2 kernel: [551843.727940] cdc_acm: probe of 1-1.2:1.0 failed
with error -22
Sep 22 20:17:16 rpi2 kernel: [551843.728056] usbcore: registered new interface
driver cdc_acm
Sep 22 20:17:16 rpi2 kernel: [551843.728061] cdc_acm: USB Abstract Control
Model driver for USB modems and ISDN adapters
Sep 22 20:21:11 rpi2 kernel: [552078.765119] usb 1-1.2: USB disconnect, device
number 6
So much for that. There is one other possibility. It is
possible that one can go to one of the menu options and flip a
virtual switch that will take the serial data that should have
been on /dev/ttyACMx and put them on a logic-level serial line
that is accessible through the right stereo channel of a
3-conductor jack. Whether or not that works is beyond the scope
of this list so my question is whether or not there is a wrapper
program of some kind in Linux that can fool an application like
the serial port module that tried to run here in to thinking that
it is home and among friends when it's really been kidnapped.
The possible use of a logic-level serial line is probably
what I will need to do but that means that if one resets the radio to
factory defaults, one will have to go in to the menus on
the radio's screen and restore the virtual switch setting.
As a computer user who happens to be blind, that's a major pain as
well as in a case where the radio is remotely located and one is
operating it headlessly.
I smiled a bit when reading the syslog admonition to
connect to a high-speed hub. That would be quite a trick.
Thanks for any constructive suggestions.
Martin McCormick WB5AGZ
