On Thu, 24 Oct 2024 15:21:24 -0400 "Roy J. Tellason, Sr." <r...@rtellason.com> wrote:
> On Wednesday 23 October 2024 09:38:04 pm Max Nikulin wrote: > > On 23/10/2024 21:25, Roy J. Tellason, Sr. wrote: > > > Connecting the device with a USB cable I see it wake up, at > > > which point there's a menu on its screen. > > > > Start "journalctl -f" as root before connecting the device. Logs > > may contain some hints how to communicate with it. Perhaps "udevadm > > monitor" with some options may provide more low level info. > > I did find some info in one of the log files: > > Oct 24 15:14:28 Workstation1 kernel: [1915052.140032] usb 7-1.4.4: > new full-speed USB device number 13 using ehci-pci Oct 24 15:14:28 > Workstation1 kernel: [1915052.249009] usb 7-1.4.4: New USB device > found, idVendor=1a86, idProduct=7523 Oct 24 15:14:28 Workstation1 > kernel: [1915052.249012] usb 7-1.4.4: New USB device strings: Mfr=0, > Product=2, SerialNumber=0 Oct 24 15:14:28 Workstation1 kernel: > [1915052.249014] usb 7-1.4.4: Product: USB Serial Oct 24 15:14:28 > Workstation1 kernel: [1915052.249308] ch341 7-1.4.4:1.0: ch341-uart > converter detected Oct 24 15:14:28 Workstation1 kernel: > [1915052.251232] usb 7-1.4.4: ch341-uart converter now attached to > ttyUSB0 Oct 24 15:14:28 Workstation1 mtp-probe: checking bus 7, > device 13: > "/sys/devices/pci0000:00/0000:00:1a.7/usb7/7-1/7-1.4/7-1.4.4" Oct 24 > 15:14:28 Workstation1 mtp-probe: bus: 7, device: 13 was not an MTP > device Oct 24 15:14:29 Workstation1 org.xfce.FileManager[1332]: > thunar-volman: Unsupported USB device type "usb". Oct 24 15:14:29 > Workstation1 org.xfce.FileManager[1332]: thunar-volman: Unsupported > USB device type "ch341". > > I don't recognize that mtp stuff, and don't know how thunar-volman > gets into the picture... > It's just seeing what software you have installed that is likely to want to talk to the device, and it didn't find any. It's mostly looking for USB drives. But you can see it has assigned ttyUSB0 to the device. See my other post, but once you have the right serial parameters set by stty, you can just cat /dev/ttyUSB0 to see if your gadget is sending anything by itself. Or any such text will appear in the CuteCom window, if you run that. Other serial monitors are available... -- Joe -- Joe
