我正在使用运行 ubuntu 的嵌入式设备。
通常只有root才有i2c设备的读写权限。
我使用此命令为普通用户（我）添加 i2c r/w 权限：
sudo chmod 777 /dev/i2c-*
但我想制定一个udev规则。我在/etc/udev/rules.d/名为的文件中创建了一个文件60-i2c-tools.rules，并将以下行放入其中。
KERNEL==”i2c-[0-9]*”, MODE=”0660”
但是，当我重新启动设备时，我无法访问 I2C 设备。这些是权限：
crwxrwxrwx 1 root root 89, 0 Aug 10 12:59 /dev/i2c-0
crwxrwxrwx 1 root root 89, 1 Aug 10 12:59 /dev/i2c-1
crw------- 1 root root 89, 10 Aug 10 12:59 /dev/i2c-10
crw------- 1 root root 89, 11 Aug 10 12:59 /dev/i2c-11
crwxrwxrwx 1 root root 89, 2 Aug 10 12:59 /dev/i2c-2
crwxrwxrwx 1 root root 89, 3 Aug 10 12:59 /dev/i2c-3
crw------- 1 root root 89, 4 Aug 10 12:59 /dev/i2c-4
crw------- 1 root root 89, 5 Aug 10 12:59 /dev/i2c-5
crw------- 1 root root 89, 6 Aug 10 12:59 /dev/i2c-6
crw------- 1 root root 89, 7 Aug 10 12:59 /dev/i2c-7
crw------- 1 root root 89, 8 Aug 10 12:59 /dev/i2c-8
crw------- 1 root root 89, 9 Aug 10 12:59 /dev/i2c-9
我需要运行sudo chmod 777 /dev/i2c-*并将权限更改为：
crwxrwxrwx 1 root root 89, 0 Aug 10 12:59 /dev/i2c-0
crwxrwxrwx 1 root root 89, 1 Aug 10 12:59 /dev/i2c-1
crwxrwxrwx 1 root root 89, 10 Aug 10 12:59 /dev/i2c-10
crwxrwxrwx 1 root root 89, 11 Aug 10 12:59 /dev/i2c-11
crwxrwxrwx 1 root root 89, 2 Aug 10 12:59 /dev/i2c-2
crwxrwxrwx 1 root root 89, 3 Aug 10 12:59 /dev/i2c-3
crwxrwxrwx 1 root root 89, 4 Aug 10 12:59 /dev/i2c-4
crwxrwxrwx 1 root root 89, 5 Aug 10 12:59 /dev/i2c-5
crwxrwxrwx 1 root root 89, 6 Aug 10 12:59 /dev/i2c-6
crwxrwxrwx 1 root root 89, 7 Aug 10 12:59 /dev/i2c-7
crwxrwxrwx 1 root root 89, 8 Aug 10 12:59 /dev/i2c-8
crwxrwxrwx 1 root root 89, 9 Aug 10 12:59 /dev/i2c-9