SIM900 HTTP POST
AT+SAPBR=3,1,"CONTYPE","GPRS"
OK
AT+SAPBR=3,1,"APN","CMNET" //CMNET是移动卡。如果是电信卡,设置为ctnb
OK
AT+SAPBR=1,1
OK
AT+HTTPINIT //初始化HTTP
OK
AT+HTTPPARA="URL","http://cloud.test.cn" //设置URL参数
OK
AT+HTTPPARA="CONTENT","application/x-www-form-urlencoded" //设置CONTENT参数
OK
AT+HTTPDATA=4,4000 //设置数据长度
DOWNLOAD
data //数据
OK
AT+HTTPACTION=1 //POST
OK
+HTTPACTION: 1, 200, 11
AT+HTTPREAD=0,512 //读取返回数据
+HTTPREAD: 11
data //返回数据
OK
AT+HTTPTERM //结束HTTP
OK
AT+SAPBR=0,1
OK