Rainbow Electronics MG260 - Manual (Page 86)

FLYFOT-MG260-MODULE
Page: 86 / 246
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prior written agreement.
hexadecimal format). Therefore, only the following set of characters is allowed:
{‘0’, ’1’,’2’, ’3’,’4’,’5’,’6’,’7’,’8’,’9’, ‘A’,‘B’,’C’,’D’,’E’,’F’}. Each pair or character is converted to a
byte (e.g.: ‘41’ is converted to the ASCII character ‘A’, whose ASCII code is 0x41 or 65).
In Text mode, all commands and responses are in ASCII characters.
Syntax
Command syntax : AT+CMGF=<mode>
Command
Possible responses
AT+CMGF?
Note : Current message format +CMGF:1
OK
Note : Text mode
AT+CMGF=?
Note : Possible message format +CMGF: (0,1)
OK
Note : Text or PDU modes are available
Example, sending an SMS Message in PDU mode
Command
Possible responses
AT+CMGF=0
Note : Set PDU mode OK
Note : PDU mode valid
AT+CMGS=14<CR>
0001030691214365000004C9E9340B
Note : Send complete MSG in PDU mode,
no SC address +CMGS: 4
OK
Note : MSG correctly sent, <mr> is
returned
Defined values
<mode> PDU or text mode
0 PDU mode (default value)
1 Text mode
The <pdu> message is composed of the SC address (00 means no SC addressgiven, use default SC address
read with +CSCA command) and the TPDUmessage.
In this example, the length in bytes of the TPDU buffer is 14, coded as GSM03.40
In this case the TPDU is : 0x01 0x03 0x06 0x91 0x21 0x43 0x65 0x00 0x00 0x04 0xC9 0xE9 0x34 0x0B,
which means regarding GSM 03.40 :
<fo> 0x01 (SMS-SUBMIT, no validity period)
<mr> (TP-MR) 0x03 (Message Reference)
<da> (TP-DA) 0x06 0x91 0x21 0x43 0x65 (destination address +123456)
<pid> (TP-PID) 0x00 (Protocol Identifier)
<dcs> (TP-DCS) 0x00 (Data Coding Scheme : 7 bits alphabet)
<length> (TP-UDL) 0x04 (User Data Length, 4 characters of text)
TP-UD 0xC9 0xE9 0x34 0x0B (User Data : ISSY)
TPDU in hexadecimal format must be converted into two ASCII characters. For