OK3588-安卓系统添加pwm的可执行权限
| 安卓系统，/sys/class/pwm/目录下的节点需要使用root用户进行读写。写应用程序时没有可读写权限。可以使用如下方法修改其初始状态的可执行权限。 以pwm0和pwm2为例，在device/rockchip/common/rootdir/init.rk30board.rc文件中添加如下指令： write /sys/class/pwm/pwmchip0/export 0 chown system system /sys/class/pwm/pwmchip0/pwm0/enable chown system system /sys/class/pwm/pwmchip0/pwm0/polarity chown system system /sys/class/pwm/pwmchip0/pwm0/period chown system system /sys/class/pwm/pwmchip0/pwm0/duty_cycle chmod 0666 /sys/class/pwm/pwmchip0/pwm0/enable chmod 0666 /sys/class/pwm/pwmchip0/pwm0/polarity chmod 0666 /sys/class/pwm/pwmchip0/pwm0/period chmod 0666 /sys/class/pwm/pwmchip0/pwm0/duty_cycle write /sys/class/pwm/pwmchip2/export 0 chown system system /sys/class/pwm/pwmchip2/pwm0/enable chown system system /sys/class/pwm/pwmchip2/pwm0/polarity chown system system /sys/class/pwm/pwmchip2/pwm0/period chown system system /sys/class/pwm/pwmchip2/pwm0/duty_cycle chmod 0666 /sys/class/pwm/pwmchip2/pwm0/enable chmod 0666 /sys/class/pwm/pwmchip2/pwm0/polarity chmod 0666 /sys/class/pwm/pwmchip2/pwm0/period chmod 0666 /sys/class/pwm/pwmchip2/pwm0/duty_cycle |
