开机自启动脚本

需求描述：需要在开机的某个过程，手动写某个设备的寄存器的值，并加载ak8963的模块驱动

 

1.编辑脚本akmsensor.sh

#!/system/bin/sh
i2cset  -y -f 5 0x68 0x37 0x02 b
sleep 10
insmod vendor/lib/modules/ak8963.ko

 

2.修改device.mk

device/rockchip/common
diff --git a/device.mk b/device.mk
index 6123734..cd6ac61 100755
--- a/device.mk
+++ b/device.mk
@@ -212,6 +212,8 @@ PRODUCT_COPY_FILES += \
     $(LOCAL_PATH)/init.insmod.cfg:$(TARGET_COPY_OUT_VENDOR)/etc/init.insmod.cfg \
     $(LOCAL_PATH)/init.insmod.sh:$(TARGET_COPY_OUT_VENDOR)/bin/init.insmod.sh \
        $(LOCAL_PATH)/eth_rule.sh:$(TARGET_COPY_OUT_VENDOR)/bin/eth_rule.sh \
+    $(LOCAL_PATH)/akmsensor.sh:$(TARGET_COPY_OUT_VENDOR)/bin/akmsensor.sh \
+    $(LOCAL_PATH)/ak8963.ko:$(TARGET_COPY_OUT_VENDOR)/lib/modules/ak8963.ko \
     device/rockchip/common/init.$(TARGET_BOARD_HARDWARE).rc:$(TARGET_COPY_OUT_VENDOR)/etc/init/hw/init.$(TARGET_BOARD_HARDWARE).rc \
     device/rockchip/common/init.$(TARGET_BOARD_HARDWARE).usb.rc:$(TARGET_COPY_OUT_VENDOR)/etc/init/hw/init.$(TARGET_BOARD_HARDWARE).usb.rc \
     device/rockchip/common/ueventd.rockchip.rc:$(TARGET_COPY_OUT_VENDOR)/ueventd.rc \

 

3.修改xxx.init.rc文件，创建服务启动脚本：

     device/rockchip/common/ueventd.rockchip.rc:$(TARGET_COPY_OUT_VENDOR)/ueventd.rc \
diff --git a/init.rk30board.rc b/init.rk30board.rc
index c584fa9..f4f84ad 100755
--- a/init.rk30board.rc
+++ b/init.rk30board.rc
@@ -397,8 +397,17 @@ service shutdownanim /system/bin/bootanimation shutdown
        
        
 on property:sys.boot_completed=1
+    start akmsensor
        start eth_rule
 
+service akmsensor /system/bin/sh /vendor/bin/akmsensor.sh
+    class main
+       user root
+       group root
+       disabled
+       oneshot
+       seclabel u:r:shell:s0
+
 service eth_rule /system/bin/sh /vendor/bin/eth_rule.sh

sys.boot_completed=1是开机动画结束后，开始启动服务，服务启动脚本

4.服务的启动时间顺序，可以init.rc里面阶段来选择：

参考：https://blog.csdn.net/WCH_TechGroup/article/details/130337224
https://blog.csdn.net/weixin_38503885/article/details/81202799
https://blog.csdn.net/SHH_1064994894/article/details/131983338