Created
August 22, 2016 03:28
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udev rule for usb serial
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| /etc/udev/rules.d/90-tty-usb.rules | |
| # CP210x | |
| SUBSYSTEMS=="usb", ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea60", MODE="0666" | |
| How to add udev rule for usb serial device | |
| [huzhifeng@CentOS72 ~]$ minicom | |
| Cannot create lockfile for /dev/ttyUSB0: 权限不够 | |
| [huzhifeng@CentOS72 ~]$ su root -l | |
| [root@CentOS72 ~]# ls -al /dev/ttyUSB0 | |
| crw-rw---- 1 root dialout 188, 0 8月 22 08:59 /dev/ttyUSB0 | |
| [root@CentOS72 ~]# lsusb | grep CP210x | |
| Bus 001 Device 055: ID 10c4:ea60 Cygnal Integrated Products, Inc. CP210x UART Bridge / myAVR mySmartUSB light | |
| [root@CentOS72 ~]# udevadm info -a -p $(udevadm info -q path -n /dev/ttyUSB0) | |
| [root@CentOS72 ~]# echo 'SUBSYSTEMS=="usb", ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea60", MODE="0666"' > /etc/udev/rules.d/90-tty-usb.rules | |
| [root@CentOS72 ~]# udevadm control --reload | |
| # Plug in/out CP210x | |
| [root@CentOS72 ~]# udevadm test $(udevadm info -q path -n /dev/ttyUSB0) | |
| [root@CentOS72 ~]# ls -l /dev/ttyUSB0 | |
| crw-rw-rw- 1 root dialout 188, 0 8月 22 11:03 /dev/ttyUSB0 | |
| [root@CentOS72 ~]# |
Works fine for me. Thanks a lot, you saved me a lot of time!
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This doesn't work on 238.76 (or maybe since a much earlier version already) any more. It simply does nothing at all; no changes. Rules in udev are completely broken (and probably will remain that way, considering that it hasn't been fixed for >months).