时钟频率以Rockchip 官方提供的设备树示例为准，降低CPU主频导致分频下去的其他模块可能无法获取到满足工作的时钟频率，我们的供电方案是DC-DC没有使用pmu所以电压是无法调整的；修改设备树设置时钟频率仅能用于测试，实际使用上降低频率并不能降低功耗，没有什么实际意义

This idea is feasible. 1.You can create a separate configuration file, such as/etc/wpa_supplementant.ap.conf,with the following content: ctrl_interface=DIR=/var/run/wpa_supplicant ap_scan=1 network={ ssid="YourAPSSID" mode=2 frequency=2412 key_mgmt=NONE } Here mode=2 means creating an AP, ...

You can add a QR code function to main.cc to decode the image, and then call it after the main loop acquires the vi frame.

You need to cross compile the uclibc version of libpthread.so, transfer the file to/usr/lib on the buildroot system, and do not need to modify the c lib supported by the system.

I have observed that your process does not seem to have configured a cross compilation environment for the zbar library. From the error message 'file format not recognized', I think this is a high possibility.

The chip model is SKI WB800DCS.2， The schematic diagram is as follows： Schematic diagram link:https://files.luckfox.com/wiki/Luckfox- ... ra%20W.pdf

直接根据上面介绍修改设备树就行

开机慢应该是rootfs启动开启了比较复杂的软件，比如samba，可以不启用启动脚本S91smb中。
如果需要换开机指示，可以编写驱动到内核里实现。

wiki里提供的原理图里有定义https://files.luckfox.com/wiki/Luckfox- ... ra%20W.pdf。

有两种方法推荐，但都需要重新在SDK中编译或者打包镜像 方法一： 比如你在/etc下加了一个系统文件，可以把这个文件复制到/luckfox-pico/project/cfg/Boardconfig IPc/overlay里，可以加个文件夹存放你的备份文件，同时再相应的SDK配置文件中添加然后打包，再重新烧录。 cd /luckfox-pico/project/cfg/Boardconfig IPc/overlay ls overlay-buildroot-npc WXWorkCapture_17351951396025.png WXWorkCapture_17376902044429.png ...