Smart Machine Smart Decision
SIM7500_SIM7600 Series_AT Command Manual_V1.07 2017-12-25
15.5.2 Unsolicited HTTP codes (summary of CME ERROR codes) ..................................................................... 342
15.6 HTTPS ............................................................................................................................................... 343
15.6.1 AT+CHTTPSSTART Acquire HTTPS protocol stack ............................................................................. 343
15.6.2 AT+CHTTPSSTOP Stop HTTPS protocol stack ..................................................................................... 343
15.6.3 AT+CHTTPSOPSE Open HTTPS session .............................................................................................. 344
15.6.4 AT+CHTTPSCLSE Close HTTPS session .............................................................................................. 345
15.6.5 AT+CHTTPSSEND Send HTTPS request .............................................................................................. 345
15.6.6 AT+CHTTPSRECV Receive HTTPS response ....................................................................................... 347
15.6.7 AT+CHTTPSSTATE Get the state of HTTPS stack ................................................................................ 348
15.6.8 Unsolicited HTTPS Codes .......................................................................................................................... 349
15.6.9 Unsolicited HTTPS command <err> Codes ............................................................................................... 349
15.7 HTP .................................................................................................................................................... 350
15.7.1 AT+CHTPSERV Set HTP server info ...................................................................................................... 350
15.7.2 AT+CHTPUPDATE Updating date time using HTP protocol ................................................................. 351
15.7.3 Unsolicited HTP Codes .............................................................................................................................. 352
15.8 NTP .................................................................................................................................................... 352
15.8.1 AT+CNTP update system time ................................................................................................................ 352
15.8.2 Unsolicited NTP Codes .............................................................................................................................. 353
15.9 Common Channel Service .................................................................................................................. 353
15.9.1 AT+CCHSTART Acquire common channel service ................................................................................ 354
15.9.2 AT+CCHSTOP Stop common channel service ........................................................................................ 354
15.9.3 AT+CCHOPEN Open a channel .............................................................................................................. 355
15.9.4 AT+CCHCLOSE Close a channel ........................................................................................................... 356
15.9.5 AT+CCHSEND Send data to peer ........................................................................................................... 357
15.9.6 AT+CCHRECV Receive data from the channel ...................................................................................... 358
15.9.7 AT+CCHSET Set the parameter of common channel service .................................................................. 359
15.9.8 AT+CCHADDR Get the IPv4 address for common channel service ....................................................... 360
15.9.9 AT+CCERTVERIFY Set SSL server cert verify flag .............................................................................. 361
15.9.10 Unsolicited common channel Codes ........................................................................................................... 362
15.9.11 Unsolicited common channel command <err> Codes ................................................................................ 362
15.10 SSL Certificate & Key Management .................................................................................................. 363
15.10.1 AT+ CCERTDOWN Transfer a certificate file to Module ........................................................................ 363
15.10.2 AT+CCERTLIST List certificate/key in module ..................................................................................... 363
15.10.3 AT+CCERTDELE Delete certificate/key in the module .......................................................................... 364
16 AT Commands for Open/Close Network ................................................................................. 366
16.1 AT+CNETSTART Open network .................................................................................................... 366
16.2 AT+CNETSTOP Close network ...................................................................................................... 367
16.3 AT+CNETIPADDR Inquire PDP address ....................................................................................... 368
16.4 Unsolicited CNETSTART/CNETSTOP Codes .................................................................................. 368
17 AT Commands for GPS ........................................................................................................... 370
17.1 AT+CGPS Start/Stop GPS session .................................................................................................. 370
17.2 AT+CGPSINFO Get GPS fixed position information ..................................................................... 371
17.3 AT+CGPSCOLD Cold start GPS .................................................................................................... 373
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