。

查下资料大致明白13错误码是权限不足#xff0c;浏览代码在写文件的接口加日志后#xff0c;发现是需要写iio:device*/buffer/enable这类文件的时候报错的。

千…按照ST的官方readme移植HAL后开机一直卡在android界面看logcat提示写文件时errorcode-13。

查下资料大致明白13错误码是权限不足浏览代码在写文件的接口加日志后发现是需要写iio:device*/buffer/enable这类文件的时候报错的。

千万不要傻傻的手动去修改这一个文件的权限我就是那个傻子修改完编译好刷机后你会发现又有别的文件没权限依旧报-13,。

而且每次开机手动加权限实在太恶心。

仔细看文档后发现还有个文件

/hardware/STMicroelectronics/SensorHAL_IIO/Documentation/ueventd.example.rc

/device/rockchip/common/rootdir/ueventd.rockchip.rc

但是系统原因iio:device所在路径可能有变化我的路径在/sys/bus/iio/devices/iio:device与文档就不一致。

所以要根据自身系统情况修改前缀。

除了文档列出的还有一个路径需要加/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

buffer/enable

/sys/bus/iio/devices/iio:device*

buffer/length

/sys/bus/iio/devices/iio:device*

sampling_frequency

/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

hwfifo_flush

/sys/bus/iio/devices/iio:device*

hwfifo_enabled

/sys/bus/iio/devices/iio:device*

hwfifo_watermark

/sys/bus/iio/devices/iio:device*

injection_mode

/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

in_accel_x_scale

/sys/bus/iio/devices/iio:device*

in_accel_y_scale

/sys/bus/iio/devices/iio:device*

in_accel_z_scale

/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

in_magn_x_scale

/sys/bus/iio/devices/iio:device*

in_magn_y_scale

/sys/bus/iio/devices/iio:device*

in_magn_z_scale

/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

in_anglvel_x_scale

/sys/bus/iio/devices/iio:device*

in_anglvel_y_scale

/sys/bus/iio/devices/iio:device*

in_anglvel_z_scale

/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

0666

/sys/bus/iio/devices/iio:device*

in_pressure_scale

/sys/bus/iio/devices/iio:device*

max_delivery_rate

/sys/bus/iio/devices/iio:device*

reset_counter

/sys/bus/iio/devices/iio:device*

scan_elements/in_step_counter_en

0666

/sys/bus/iio/devices/iio:device*

scan_elements/in_sign_motion_en

0666

/sys/bus/iio/devices/iio:device*

scan_elements/in_step_detector_en

0666

/sys/bus/iio/devices/iio:device*

0666

system添加好后还有个坑文件前面可能有同路径的配置可能会有影响需要自己排查处理。

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