移遠EC20 R2.0 AT指令撥號流程

使用AT指令進行撥號，可快速的集成EC20 4G模塊，只須要給EC20供電和接上通訊UART串口，就能實現鏈接網絡。

EC20管腳分配

最小系統電路圖

TCP/IP AT命令撥號流程

AT指令撥號流程測試

RDY

AT
OK		【OK】

AT+CPIN?
+CPIN: READY	【READY】
OK

AT+CSQ
+CSQ: 31,99	【0~31】【99 nouse】
OK

AT+CREG?	注網
+CREG: 0,1	【1 or 5】
OK

AT+CGREG?	注網
+CGREG: 0,1	【1 or 5】
OK

AT+CEREG?	EPS注網
+CEREG: 0,1	【1 or 5】
OK

AT+QICSGP=?	配置APN信息
+QICSGP: (1-16),(1-3),<APN>,<username>,<password>,(0-3),(0-1)
OK

AT+QICSGP=1	查詢APN信息
+QICSGP: 1,"ctnet","","",0
OK

AT+QICSGP=1,1,"ctnet","","",1	設置APN
		ID	1-16
		type 1=ipv4,2=ipv4v6
		apn	ctnet
		username
		password
		integer type	1=pap
OK

AT+QIACT=?		設置Context通道, Activate a PDP Context
+QIACT: (1-16)
OK

AT+QIACT=1
OK

AT+QIACT?
+QIACT: 1,1,1,"10.213.110.67"
		ID 1-16
		state	1=activa
		protocol type	1=ipv4,2=ipv4v6
		ipaddr
OK

AT+QIOPEN=?		打開socket鏈接
+QIOPEN: (1-16),(0-11),"TCP/UDP/TCP LISTENER/UDP SERVICE","<IP_address>/<domain_name>",<remote_port>,<local_port>,(0-2)
OK

AT+QIOPEN=<contextID>,<connectID>,<service_type>,<IP_address>/<domain_name>,<remote_port>[,<local_port>[,<access_mode>]]

AT+QIOPEN=1,0,"TCP","125.69.102.153",7792
OK

+QIOPEN: 0,0

3種數據傳輸模式

Buffer模式，Push模式，透傳模式。經過參數<access_mode>進行配置。