Hello, I have a problem with the usb scanner. When I connect the scanner when raspberry is already running, everything works, I can read from the file / dev / hidraw0. However, when the scanner is connected during startup, no /dev/hidraw* file appears ... What can I do to make raspberry scan the device again.
PS The script is written in python and the os is Raspbian Buster
Can anyone help?
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PhilE
- Raspberry Pi Engineer & Forum Moderator
- Posts: 2945
- Joined: Mon Sep 29, 2014 1:07 pm
- Location: Cambridge
Re: Raspberry Pi Zero usb scanner
[ Moved to interfacing - this isn't a Device Tree question ]
When you boot with the scanner attached, does it appear in the output of "lsusb"?
And (again, after booting with the scanner attached) what does "vcgencmd get_throttled" report?
When you boot with the scanner attached, does it appear in the output of "lsusb"?
And (again, after booting with the scanner attached) what does "vcgencmd get_throttled" report?