Use STC89c58RD+ Series MCU control handset to send and receive text messages of principle, the hardware circuit, PDU data formats and short message send/receive process, at the same time gives an application example. GSM is used by Siemens TC35i, including the RS232 serial interface, single-chip microcomputer used STC89c58RD+, Internal expansion RAM has 256+ 1024 bytes of space, can serve as a message buffer, 1602 Liquid Crystal Display (16 pin) as the display module and procedures for debugging

AT指令调试精灵
..............\ATtest.rar
..............\ReadMe.html
..............\setup.exe
GSM定位说明文档.doc
串口调试助手V2.2.exe
程序
....\1602_lcd.c
....\delayms.asm
....\delayms.LST
....\delayms.OBJ
....\main.c
....\main.LST
....\main.OBJ
....\readms
....\readms.hex
....\readms.M51
....\readms.Opt
....\readms.plg
....\readms.Uv2
....\readms_Opt.Bak
....\readms_Uv2.Bak
....\shizhong.c
....\STARTUP.A51
....\STARTUP.lst
....\STARTUP.obj
....\tc35i.c

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