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串口通信-使用php_dio.dll通过串口连接gsm模块发短信,电信的手机号收不到短信

WBOY
WBOYOriginal
2016-06-02 11:33:511029browse

串口通信php串口gsm模块

存在问题如下
1、设备连接好之后,必须要使用串口助手之类的软件打开串口,再关闭软件,才能使用php发送读串口的at指令,否则就假死,为什么?
2、电信手机号收不到短信,不知为什么?

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