Unknown device subtype string: TEMPerHumV4.0rHu - 0c45:7402

[insightevancrouch]

Hi -

I'm attempting to read from my TemperHum USB device 0c45:7402 on Ubuntu 14.04 eeepc

I've built tempered using the 1.2/1.3 branch, but when I run it, I get the following message:
/dev/hidraw1: Could not open device: Unknown device subtype string: TEMPerHumV4.0rHu

Here is my lsusb result
lsusb
Bus 002 Device 002: ID 0c45:7402 Microdia TEMPerHUM Temperature & Humidity Sensor

Any ideas? Trying to tie an old netbook into my network of raspberry pi temperature sensors ( https://www.crouchhouse.com )

Thanks!

[dememax]

Hi,

I've got the same device:

Jun  9 00:33:47 maxprecision kernel: usb 1-6: Product: TEMPERHUM1V1.3
Jun  9 00:33:47 maxprecision kernel: usb 1-6: Manufacturer: RDing
Jun  9 00:33:47 maxprecision kernel: usb 1-6: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes
Jun  9 00:33:47 maxprecision kernel: usb 1-6: ep 0x82 - rounding interval to 64 microframes, ep desc says 80 microframes
Jun  9 00:33:47 maxprecision kernel: input: RDing TEMPERHUM1V1.3 as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/0003:0C45:7402.0002/input/input27
Jun  9 00:33:48 maxprecision kernel: hid-generic 0003:0C45:7402.0002: input,hidraw1: USB HID v1.10 Keyboard [RDing TEMPERHUM1V1.3] on usb-0000:00:14.0-6/input0
Jun  9 00:33:48 maxprecision kernel: hid-generic 0003:0C45:7402.0003: hiddev0,hidraw2: USB HID v1.10 Device [RDing TEMPERHUM1V1.3] on usb-0000:00:14.0-6/input1
Jun  9 00:33:48 maxprecision kernel: usbcore: registered new interface driver usbkbd
Jun  9 00:33:58 maxprecision kernel: usb 1-6: USB disconnect, device number 4
Jun  9 00:33:59 maxprecision acpid[1843]: input device has been disconnected, fd 29
Jun  9 00:34:12 maxprecision kernel: usb 1-3: new low-speed USB device number 5 using xhci_hcd
Jun  9 00:34:12 maxprecision kernel: usb 1-3: New USB device found, idVendor=0c45, idProduct=7402
Jun  9 00:34:12 maxprecision kernel: usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Jun  9 00:34:12 maxprecision kernel: usb 1-3: Product: TEMPERHUM1V1.3
Jun  9 00:34:12 maxprecision kernel: usb 1-3: Manufacturer: RDing
Jun  9 00:34:12 maxprecision kernel: usb 1-3: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes
Jun  9 00:34:12 maxprecision kernel: usb 1-3: ep 0x82 - rounding interval to 64 microframes, ep desc says 80 microframes
Jun  9 00:34:12 maxprecision kernel: input: RDing TEMPERHUM1V1.3 as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/0003:0C45:7402.0004/input/input28
Jun  9 00:34:12 maxprecision kernel: hid-generic 0003:0C45:7402.0004: input,hidraw1: USB HID v1.10 Keyboard [RDing TEMPERHUM1V1.3] on usb-0000:00:14.0-3/input0
Jun  9 00:34:12 maxprecision kernel: hid-generic 0003:0C45:7402.0005: hiddev0,hidraw2: USB HID v1.10 Device [RDing TEMPERHUM1V1.3] on usb-0000:00:14.0-3/input1

And obviously, it doesn't work:

maxprecision TEMPered # ./utils/tempered --scale Celsius
Device 093a:2521 if 0 rel  100 | /dev/hidraw0 | (null) USB OPTICAL MOUSE
Device 0c45:7402 if 0 rel    1 | /dev/hidraw1 | RDing TEMPERHUM1V1.3
Device 0c45:7402 if 1 rel    1 | /dev/hidraw2 | RDing TEMPERHUM1V1.3
/dev/hidraw2: Could not open device: Unknown device subtype string: TEMPerHumM12V1.3

Is there a solution? (apart from just brute overriding of strings in known_temper_types structure)

Thanks!

[drabels]

I have this same device, so I added an additional subtype, with the same settings as the "TEMPerHumM12V1.0" subtype above it. No problems compiling or running, but the results are definitely "off":

geekie:/usr/local/admin/build/TEMPered/_build# ./utils/tempered --scale Celsius
/dev/hidraw4 0: temperature 778.25 °C, relative humidity 27009.7%, dew point -3292.9 °C

Using the settings from "TEMPer2HumiV1.x" is little better:

geekie:/usr/local/admin/build/TEMPered/_build# ./utils/tempered --scale Celsius
/dev/hidraw4 0: temperature 224.74 °C, relative humidity 100.0%, dew point 224.7 °C

[drabels]

It turns out google is our friend, the solution is here:

#38

Once those code changes are implemented, the output looks pretty good:

geekie:/usr/local/admin/build/TEMPered/_build# ./utils/tempered
/dev/hidraw4 0: temperature 23.67 °C, relative humidity 42.1%, dew point 10.0 °C

I'll keep an eye on it and see how it compares to my other temperature sensor!