Guide to common AT commands for SMS cats

Guide to common AT commands for SMS cats

AT command SMS plays an important role in CAT Communication. It can use AT command to control many behaviors of mobile phones, including dialing numbers, button control, fax, and GPRS. Basic AT command usage: 1. Test Command) Add "=?" After the AT command ?" It constitutes a test command. For example, "AT + CSCS = ?" All supported character sets are listed. 2. Read Command) Add "?" After the AT command It constitutes a READ command. For example, "AT + CSCS ?" The current settings are listed. 3. Execute Command) Generally, add "=" and command parameters after the AT command. Some commands, such as the AT + CMGR command, can be directly executed without parameters. Taking wavecom gsm modem as an example, the common AT instruction sets and Development references are as follows: Command name Usage Description CSMS Select Information Service 0 compatible with GSM07.05 Phase 2 version 4.7.0 1 compatible with GSM07.05 Phase 2 + version T + CSMS = 0 + CSMS: 1, 1 AT + CSMS = 1 + CSMS: 1, 1 SMS-MO SMS-MT SMS-CB (community broadcast) All supported CNMA New SMS received confirmation CPMS Preferred SMS storage Zone SM is the SIM card area and BM is the memory area. The default value is SM. AT + CPMS =? + CPMS: ("SM", "BM"), ("SM ")) AT + CPMS = "SM" + CPMS: 3,25, 3,25 AT + CPMS = "BM" + CPMS: 0, 20, 3, 25 (1) read and delete information (2) write and publish information Used 1, total 1, used 2, total 2 CMGF Set the SMS encoding mode (1 text format, 0 is PDU format) CSAS Store information related to CSCA and CSMP on E2PROM CRES Restore relevant information from E2PROM CSDH Display text format parameters (1 is displayed, 0 is not displayed) AT + CDSH = 1 + CMT: "+ 8613501154105", "01/09/12,18: 04: 09 + 32", 8613800100500, 4, "+", 3 AAA AT + CSDH = 0 + CMT: "+ 8613501154105", "01/09/12, 18: 04: 48 + 32" AAA Related information includes + CMTI, + CMT, + CDS, + CMGR, + CMGL The two examples on the left are the same for sending and receiving messages with AAA content. CNMI SMS output mode AT + CNMI =, 0 + CMT: "+ 8613501154105", "01/09/13, 11: 04: 09 + 32" AAA AT + CNMI = 2, 1, 0, 0 + CMTI: "SM", 4 Among them, the second digit determines whether the SMS is directly output or saved in "SM ". The two examples on the left are the same as the SMS for sending and receiving AAA content. If the value is 0, no SMS is received. CMGR Read information stored in "SM" AT + CMGR = 1 + CMGR: "rec read", "+ 8613501154102", "01/08/: 46: 47 + 32" X000E8 AT + CMGR = 4 + CMGR: "rec unread", "+ 8613501154105", "01/09/13, 11: 02: 06 + 32" AAA AT + CMGR = 2 + CMGR: "rec read", "+ 8613501154105", "01/08/: 32: 34 + 32" DCS format error At + cmgf = 0; + cmgr = 2 + CMGR: 1, 26 08916830000000000005f0040d91683100000000000001f500081080326123432306004400460044 Read 1st Source 13501154102 Read 4th Source 13501154105 When reading 2nd entries, the system encounters a DCS format error. After converting it to the PDU format, it reads the data. Source 13501154105 CMGL Information List, (+ CMGL: Index, type, length <content> = AT + CMGL = 4 + CMGL: 1, 1, 26 08916830000000000005f0040d91683100000000000001f200001080000016474230658180c56c401 + CMGL: 2, 1, 26 08916830000000000005f0040d91683100000000000001f500081080326123432306004400460044 + CMGL: 3, 1, 32 08916830000000000005f0040d91683100000000000001f50008108032617116230c003400310032 003100320033 + CMGL: 4, 1, 23 08916830000000000005f0040d91683100000000000001f500001090311120602303c16010 Type "Rec unread" 0 "Rec read" 1 "Sto unsent" 2 "Sto sent" 3 "ALL" 4 CMGS Send SMS, which can be in text or PDU Mode AT + CMGF = 1 OK AT + CMGS = 13501154105 > AAA <^ Z> + CMGS: 204 OK AT + CMGF = 0 OK AT + CMGS = 18 > 0011000d9168310000000001_1f500040103414141 <^ Z> + CMGS: 205 OK Send by text Send by PDU CMGW Write information to memory AT + CMGW = "+ 8613501154105" > AAA <^ Z> + CMGW: 5 OK AT + CMGW = <lengh> <CR> <pdu> <^ Z> Write by text Write by PDU CMSS Send information from memory AT + CMSS = 5 + CMSS: 207 OK + CMT:, 23 08916830000000000005f0040d91683100000000000001f500001090116163932303c16010 AT + CMSS = 5, + 8613501154102 + CMSS: 210 OK 5th messages in the sent memory Received Information You can also send 5th messages to a specified user. CSMP Set text format parameters, + CSMP: <fo> <vp> <pid> <dcs> AT + CSMP? + CSMP: 1,167, 0, 0 The information is valid, 167 default 0-143: (VP + 1) * 5 minutes 143-167: 12 hours + (VP-143) * 30 minutes 168-196 (VP-166) * 1 day 197-255 (VP-192) * 1 week CMGD Delete information, AT + CMGD = <index> CSCA SMS Service Center Number At + csca? + CSCA: "+ 8613800100500", 145 OK Beijing Short Message Service Center Number CSCB Select the community broadcast information type WCBM Residential broadcast information identifier WMSC Information Status correction WMGO Information Rewriting