BBear

AT命令中出现数字会出现命令匹配失败的情况

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我在使用AT组件的过程中发现一个比较有意思的问题。 举例如下： 我自己定义了一个命令:AT+SACNI2C 在运行的时候，发现输入该命令后会返回命令匹配错误的日志。 经过检查代码发现，AT SERVER的实现中关于获取AT命令名字的函数中，将数字0~9也作为了结束标志。 也就是我前面的指令的名称被解析为了**AT+SACNI**而不是我想要的**AT+SACNI2C**。 具体代码位置在[这里](https://github.com/RT-Thread/rt-thread/blob/b19602bcaab3627b9736862d015ee90ce62cf548/components/net/at/src/at_server.c#L406) 我想了解下是出于什么原因需要将数字0~9也作为AT名称的结束标志？ 希望了解的朋友能给我指点下。 感谢。

add notes for the missed step in linux compiling

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The compile step in the [ncnn documents](https://github.com/Tencent/ncnn/wiki/how-to-build#build-for-linux) don't tell us to make install it after compilation finished. Nor the document in the demo_ncnn. So add the note here.

I am trying to use the demo_ncnn on my raspberrypi CM4 board. After I successfully compiled the ncnn repo with this [link](https://github.com/Tencent/ncnn/wiki/how-to-build#build-for-linux) I go ahead with set the environment value...

fix the abnormal blink of ground under the dinosaur

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I find that when the game is running.The ground under the dinosaur is always blink very fast. I think it should not blink.This commit will fix this.