以前定位过程:
AT+CGMR
Revision:1137B02SIM900A64_ST_ENHANCE
OK
AT+CSQ
+CSQ: 21,0
OK
AT+CREG? (查看GSM是否注册成功)
+CREG: 0,1
OK
AT+CGATT? (查看GPRS附着状态)
+CGATT: 1
OK
AT+SAPBR=3,1,"CONTYPE","GPRS" (设置网络参数)
OK
AT+SAPBR=3,1,"APN","CMWAP" (设置APN)
OK
AT+SAPBR=1,1 (激活网络场景)
OK
AT+SAPBR=2,1 (获取分配IP地址)
+SAPBR: 1,1,"10.124.27.226"
OK
AT+CIPGSMLOC=1,1
+CIPGSMLOC: 0,113.806429,22.762798,2014/06/16,15:18:58
OK
AT+CIPGSMLOC=2,1
+CIPGSMLOC: 0,2014/06/16,15:20:18
OK
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