GSM简单使用

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GSM发送英文短信：

AT+CSCS="GSM"
AT+CMGF=1
AT+CMGS="15807220104"
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GSM发送中文短信：

AT+CMGF=1
AT+CSMP=17,167,0,8
AT+CSCS="UCS2"
AT+CMGS="00310037003300380036003600320034003800390039"
6E295EA68FC74F4E

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需注意，GSM模块需要与MCU共地，否则可能因为一些奇奇怪怪的原因无法发送短信