Send and receive SMS via RS232 (ii)

Query SMS:

1 . Query all text messages with the same status

directive: At+cmgl=n

where n represents the number of 0-4.

0--unread text messages. Executes the command and then changes itself to read.

1--read SMS.

2--Draft.

3--SMS has been sent.

4--All

Return (example):

+cmgl:76,3,,20

0891683108200805f011620d91683194041338f50000ff0530972d8603

--Serial number

3--Status: Send

--PDU string length

2, query the specific serial number of SMS

directive: At+cmgr=n8

where n represents the ordinal

Return (example):

+cmgr:3,,20

0891683108200805f011620d91683195041338f50000ff0530972d8603

3--Status: Send

--PDU string length

Note: The PDU string length represents the length of the remaining code in the PDU that removes the SMS center part . For example , the PDU in the above PDUhasa length portion of 11620d91683195041338f50000ff0530972d8603, which is 20 characters. a byte.

Storage Pdu

Instructions:

AT+CMGW=[PDU length ] 8

>[PDU string ]

For example:

at+cmgw=208

>0891683108200805f011620d91683195041338f50000ff0530972d8603

Note that the input After PDU, press "Ctrl + Z" to terminate. The program uses 0x1A,0x1D as termination.

return:+cmgw:85

--Serial number

Send PDU String

1, send the input PDU string

Instructions:

AT+CMGS=[PDU length ] 8

>[PDU Code ]

2 . Send the PDU string with the specified serial number

Instructions:

at+cmss=[ serial number ] 8

Transfer from bbs.sendsms.cn

Send and receive SMS via RS232 (ii)