The vehicle terminal based on GPRS is very meaningful and has great reference value.

GPRS_vehicle terminal (meaningful)\\\\\\\\GPRS\\\\\\\\check_gsm.c ........................\\\\\\\\... .\\\\\\\\Check_GSM.H .....................\\\\\\\\....\\\\\\\\Define_Bit.H .... .............\\\\\\\\....\\\\\\\\Disp_Protocol.H ............ .......\\\\\\\\....\\\\\\\\Do_Disp.C ........................\\\\\\\\. ...\\\\\\\\Do_Disp.H ..................\\\\\\\\....\\\\\\\\Do_GPS.C .. ..................\\\\\\\\....\\\\\\\\Do_GPS.H ............ .........\\\\\\\\....\\\\\\\\Do_Handle.C .............\\\\\\ \\....\\\\\\\\Do_Handle.H ........................\\\\\\\\....\\\\\\\\Do_M22.C .................\\\\\\\\....\\\\\\\\Do_M22.H ............ ...........\\\\\\\\....\\\\\\\\Do_Other.C ........................\\ \\\\\\....\\\\\\\\Do_Other.H ........................\\\\\\\\....\\\\\\\\Do_Record.C ............ ...........\\\\\\\\....\\\\\\\\Do_Record.H ........................\\ \\\\\\....\\\\\\\\Do_Reset.C ........................\\\\\\\\....\\\\\\\\Do_Reset .H ........................\\\\\\\\....\\\\\\\\Do_SRAM.C ........... .............\\\\\\\\....\\\\\\\\Do_SRAM.H ........................ .\\\\\\\\....\\\\\\\\D_Buffer.H .............\\\\\\\\....\\\\\\ \\General.C ........................\\\\\\\\....\\\\\\\\General.H ........ .............\\\\\\\\....\\\\\\\\GSM_430.C ............. ...\\\\\\\\....\\\\\\\\Handle_Protocol.H .............\\\\\\\\....\\ \\\\\\IAR430_M22.dtp......................\\\\\\\\....\\\\\\\\IAR430_M22.prj...... ............\\\\\\\\....\\\\\\\\M22_at.C .......................\\\\\\\\....\\\\\\\\M22_AT.H ............ ...........\\\\\\\\....\\\\\\\\main_init.c .......................\\ \\\\\\....\\\\\\\\Main_Init.H .......................\\\\\\\\....\\\\\\\\msp430x14x Header file description.h .......................\\\\\\\\....\\\\\\\\Msp430_Flash.C ....... ................\\\\\\\\....\\\\\\\\Msp430_Flash.H ................... ....\\\\\\\\....\\\\\\\\Other_Define.H .......................\\\\\\\\.... \\\\\\\\Record_Protocol.H.......................\\\\\\\\....\\\\\\\\SMS.C ..... ..................\\\\\\\\....\\\\\\\\spi45db041.c ................. ......\\\\\\\\....\\\\\\\\spi45db041.H .......................\\\\\\\\.. ..\\\\\\\\Sub_C.C .......................\\\\\\\\....\\\\\\\\Sub_C.H .......................\\\\\\\\....\\\\\\\\TA_Uart.C ............ ...........\\\\\\\\....\\\\\\\\TA_Uart.h .......................\\ \\\\\\....\\\\\\\\TCP-IP Example.TXT .......................\\\\\\\\....\\\\ \\\\Uart01.C .......................\\\\\\\\....\\\\\\\\Uart01.H ....... ................\\\\\\\\....\\\\\\\\W_Protocol.H ................... ....\\\\\\\\....\\\\\\\\Handle V2.1 protocol use case.txt .......................\\\\\\ \\....\\\\\\\\Test record.TXT .......................\\\\\\\\....\\\\\\\\Line data .TXT .......................\\\\\\\\....\\\\\\\\Recorder command.txt ........ ...............\\\\\\\\....\\\\\\\\Distance conversion.TXT .................. .....\\\\\\\\....\\\\\\\\Release .......................\\\\\\\\GPRS