Après branchement du gadget USB, dmesg raconte :

usb 7-1: Manufacturer: RDing
hidraw: raw HID events driver (C) Jiri Kosina
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
input: RDing TEMPERHUM1V1.2 as /devices/pci0000:00/0000:00:1d.1/usb7/7-1/7-1:1.0/0003:0C45:7402.0001/input/input13
hid-generic 0003:0C45:7402.0001: input,hidraw0: USB HID v1.10 Keyboard [RDing TEMPERHUM1V1.2] on usb-0000:00:1d.1-1/input0
hid-generic 0003:0C45:7402.0002: hiddev0,hidraw1: USB HID v1.10 Device [RDing TEMPERHUM1V1.2] on usb-0000:00:1d.1-1/input1

tth@debian:~/Essais/DD2-monitor$ ls -rtl /dev/hidraw*
crw------- 1 root root 246, 0 Dec  6 11:04 /dev/hidraw0
crw------- 1 root root 246, 1 Dec  6 11:04 /dev/hidraw1

    Ça va pas être simple...