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GSM GPRS SIM900A MODEM
REV1.0
Contents
Overview ......................................................................................................................................... 3
Features ........................................................................................................................................... 4
Datasheets ....................................................................................................................................... 4
Basic AT Commands for Testing ................................................................................................... 5
GSM AT Commands: ................................................................................................................. 5
GPRS Commands: ...................................................................................................................... 6
MODULE SETUP .......................................................................................................................... 7
SAMPLE CODE: ........................................................................................................................ 8
POWER MODES............................................................................................................................ 9
Power down mode....................................................................................................................... 9
Minimum Functionality Mode .................................................................................................... 9
Sleep mode .................................................................................................................................. 9
Wake up SIM900A from sleep mode ......................................................................................... 9
PINS OF GPRS /GSM SIM900A MODEM WITH ARDUINO COMPATIBLE ....................... 10
NARATION OF GPRS /GSM SIM900A MODEM WITH ARDUINO COMPATIBLE ........... 11
BLOCK DIAGRAMS ................................................................................................................... 12
INTERFACING UNO AND GSM SHIELD ............................................................................ 12
INTERFACING MICROCONTROLLER WITH GSM SHIELD EXTERNAL SERIAL PINS
................................................................................................................................................... 13
CODE ............................................................................................................................................ 14
GSM POWER SAVING PIC CODE ........................................................................................ 14
MODULE HANDLING ............................................................................................................... 15
DO'S AND DONT'S ................................................................................................................. 15
