本文適用OpenHarmony開源鴻蒙系統(tǒng)，本次使用的是開源鴻蒙主板，搭載瑞芯微RK3568芯片。深圳觸覺智能專注研發(fā)生產(chǎn)OpenHarmony開源鴻蒙硬件，包括核心板、開發(fā)板、嵌入式主板，工控整機等，提供瑞芯微RK3566、RK3568、RK3588、RK3562、RK3576等國產(chǎn)化嵌入式產(chǎn)品方案。

一、查看文件路徑

首先init.rkxxx.cfg文件在系統(tǒng)路徑

/vendor/etc/

，如下圖所示：

C:\Users\industio>hdc shell # cd vendor/etc/ # ls audio fstab.rk3568 iqfil.json soc_perf battery hdfconfig iqfiles thermal_config cgroup_sched init ons distributedhardware init.rk3568.cfg param firmware init.rk3568.usb.cfg ressched"

二、文件傳至本地

將需要需要修改的cfg文件從文件系統(tǒng)中拉下來放在本地目錄，命令是：hdc file recv '系統(tǒng)路徑' '本地文件路徑'，如下圖所示：

?C:\Users\industio>hdc file recv /vendor/etc/init.rk3568.cfg D:\ [I][2024-07-25 10:49:35] HdcFile::TransferSummary success FileTransfer finish, Size:3581, File count = 1, time:127ms rate:28.20kB/s

三、修改文件

在cfg文件中增加權(quán)限，注意在對文件修改不要使用TAB鍵，復制前一行代碼后再修改防止出錯

{ "import" : [ "init.${ohos.boot.hardware}.usb.cfg" ], "jobs" : [{ "name" : "pre-init", "cmds" : [ "write /proc/sys/vm/min_free_kbytes 10240", "mount debugfs /sys/kernel/debug /sys/kernel/debug mode=755", "write /sys/kernel/debug/hisi_inno_phy/role peripheral" ] }, { "name" : "init", "cmds" : [ "write /proc/1/oom_score_adj -1000", "chown system system /sys/kernel/hungtask/userlist", "symlink /dev/block/platform/fe310000.sdhci/by-name /dev/block/by-name" ] }, { "name" : "boot", //在此位置添加設備權(quán)限 "cmds" : [ "write /sys/block/zram0/disksize 1024M", "mkswap /dev/block/zram0", "swapon /dev/block/zram0", "chmod 777 /dev/ttyAMA2", + "chmod 666 /dev/bus/usb/005/001" + "chmod 666 /dev/bus/usb/005/002" "chmod 775 /sys/class/rfkill/rfkill0/state", ] }, { "name" : "post-fs-data", "cmds" : [ "restorecon", "restorecon /data/updater" ] } ], "services" : [{ "name" : "ispserver", "path" : ["/vendor/bin/ispserver"], "once" : 1, "secon" : "u:r:ispserver:s0", "uid": "ispserver", "gid": [ "ispserver", "camera_host" ] } ] }

四、文件推送

當修改完成后將文件推送回去，命令如下：

hdc shell mount -o remount,rw /vendor //重新掛載設備，將設備改為可讀可寫 hdc file send “本地路徑” “/vendor/etc/init.rkxxx.cfg” //將修改好的文件覆蓋到系統(tǒng)當中 hdc shell reboot //將文件推送回去，系統(tǒng)重啟