串口命令
AT+CIPSTART="TCP","101.132.43.66","80" AT+CIPSTART="UDP","101.132.43.66","80" AT+CIPSEND 发送的内容1 十六进制1a表示发送 AT+CIPSEND 发送的内容2 十六进制1a表示发送 Linux CentOS 6.8 X64 (服务器响应的报文) Linux CentOS 6.8 X64 2 (服务器响应的报文) AT+CIPSHUT
交互流程
交互流程 AT+CIPSTART="UDP","101.132.43.66","80" OK CONNECT OK AT+CIPSEND > Hello Sim900A UDP SEND OK AT+CIPSEND > Hello Sim900A UDP2 SEND OK Linux CentOS 6.8 X64 Linux CentOS 6.8 X64 2 AT+CIPSHUT SHUT OK
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原文：http://990487026.blog.51cto.com/10133282/1959732