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Troubleshooting - stops working after a while (TemperHum + Raspberry Pi) #37

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mendhak opened this issue Aug 10, 2015 · 0 comments
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@mendhak
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mendhak commented Aug 10, 2015

I have a TEMPer2HumiV1.x connected to a Raspberry Pi. There are no other USB devices connected.

I have a cron script which polls this device every minute. At first everything works fine. I get a temp, humidity, dewpoint.

After what seems like 18-20 hours on average, the device will stop working. When I query it, I get:

$ sudo ./tempered 
/dev/hidraw1: Could not open device: HID write failed: (null)

However it seems to 'be there':

$ sudo ./tempered -e
/dev/hidraw1 : TEMPer2HumiV1.x (USB IDs 0C45:7402)

$ sudo ./utils/hid-query -e
/dev/hidraw0 : 0c45:7402 interface 0 : RDing TEMPERHUM1V1.2
/dev/hidraw1 : 0c45:7402 interface 1 : RDing TEMPERHUM1V1.2

If I restart the Raspberry Pi, it starts working again. I didn't see any messages at all in dmesg. Is there anything else I can look at or troubleshoot?

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