ARM9和Linux下的GPRS模塊C代碼.doc

ARM9和Linux下的GPRS模塊C代碼/我前個(gè)月使用實(shí)驗(yàn)室的周立功ARM7實(shí)驗(yàn)箱配套的明基GPRS模塊連接到我的QQ2440V3開(kāi)發(fā)板，/在Linux環(huán)境下，做模塊的初始化、讀取模塊內(nèi)的某些硬件信息和撥打電話，實(shí)現(xiàn)遠(yuǎn)程無(wú)線控制，/如果想做更復(fù)雜的操作，在這些代碼的基礎(chǔ)上增加少量代碼即可實(shí)現(xiàn)，/下面的代碼是C語(yǔ)言代碼，大部分代碼是我個(gè)人編寫(xiě)的，部分代碼參考了一些書(shū)籍資料，/我發(fā)現(xiàn)很多網(wǎng)友使用明基GPRS模塊的過(guò)程中出現(xiàn)各種問(wèn)題，在這里我貼出來(lái)給大家參考/如轉(zhuǎn)載本文章，請(qǐng)注明本文出處/s/blog_548d39f90100bcdp.html#include /標(biāo)準(zhǔn)輸入輸出定義#include /標(biāo)準(zhǔn)函數(shù)庫(kù)定義#include /Unix 標(biāo)準(zhǔn)函數(shù)定義#include /文件控制定義#include #include #include /PPSIX 終端控制定義#include #include #include /錯(cuò)誤號(hào)定義#include myfunctions.h /自定義函數(shù)定義文件static int fd=0;struct termios newtio,oldtio;/=/明基M23 GPRS模塊AT指令，請(qǐng)參考明基的Datasheet/初始化指令A(yù)T+HRST=1,關(guān)閉模塊的電源AT$POWEROF,/長(zhǎng)時(shí)間不與M23 GPRS模塊通訊之后再次通訊時(shí)使用指令A(yù)T$NOSLEEP=1/在撥打電話時(shí)，在對(duì)方接通電話之后返回“OK”字符串，使用指令A(yù)T+COLP=1/當(dāng)有電話進(jìn)入時(shí)，顯示來(lái)電號(hào)碼，在初始化時(shí)需加上指令A(yù)T+CLIP=1/讀取SIM卡的ID號(hào)使用指令A(yù)T+CIMI/寫(xiě)入短信中心號(hào)碼，使用AT+CSCA=短信中心的號(hào)碼,145/從模塊讀取短信而不是從SIM卡讀取，使用AT+CNMI=2,2,0,0,0/提供本地待機(jī)提示音，使用AT+GDT=1，關(guān)閉則用AT+GDT=0/確定已經(jīng)找到SIM卡，使用AT+COPS?，若返回0則表明沒(méi)有找到/數(shù)據(jù)通訊時(shí)，如果網(wǎng)絡(luò)斷開(kāi)了，模塊返回NO CARRIER/數(shù)據(jù)通訊時(shí)，調(diào)整發(fā)送數(shù)據(jù)的延時(shí)時(shí)間AT$TIMEOUT=XX,XX1005000毫秒/撥號(hào)指令“ATDxx;”，XX是號(hào)碼，號(hào)碼之后必須帶分號(hào)/選擇差分語(yǔ)音通道：M22M22A，AT$AUPATH=3,1;M23,AT$AUPATH=0,1;差分語(yǔ)音通道，普通手柄通話/選擇單端語(yǔ)音通道：M22M22A，AT$AUPATH=2,1;M23,AT$AUPATH=1,1;單端語(yǔ)音通道，免提童話/語(yǔ)音通話時(shí)，調(diào)節(jié)發(fā)送和接收增益:AT$AUGAIN=(0-2),(1-9) 其中的(0-2)代表：0發(fā)送的SIDE /TONE，1發(fā)送增益，2接收增益；(1-9)代表可選擇的增益范圍/另一條調(diào)節(jié)接收增益的AT指令A(yù)T$AUVOL=(0-5),0則關(guān)閉接收，5為最大/吉林移動(dòng)的信息中心+8613800200500/初始化GPRS模塊的指令陣列/char * cmd20= AT, AT, AT$NOSLEEP=1, AT+GDT=1, AT$AUPATH=0,1, AT$AUGAIN=1,7, AT$AUGAIN=2,9;/=/=/int tty_writecmd(char *buf,int nbytes) int i; for(i=0; inbytes; i+) write(fd,&bufi,1); usleep(100); write(fd,rn,2); usleep(300000); return tcdrain(fd);/int tcdrain (int FILEDES),The tcdrain function waits until all queued output to the terminal FILEDES has been transmitted./=/=/int tty_read(char *buf,int nbytes) int r=0; r=read(fd,buf,nbytes); return r;/=/int read_info(char *buf) int ir=0,irn=0,nux=0; nux=read(fd,buf,1); if(nux!=0)/如果讀到非零0個(gè)數(shù)據(jù) while(buf0!=0) buf+; ir+; read(fd,buf,1); usleep(50); else printf(讀出0個(gè)數(shù)據(jù)！n); tcflush(fd,TCIOFLUSH);/清空讀寫(xiě)緩存/ return irn=ir+1;/=/int tty_write(char *buf,int nbytes) int i; for(i=0; inbytes; i+) write(fd,&bufi,1); usleep(100); return tcdrain(fd);/=/int tty_end() tcsetattr(fd,TCSANOW,&oldtio); / restore old modem setings / /int tcsetattr (int FILEDES, int WHEN, const struct termios *TERMIOS-P) /This function sets the attributes of the terminal device with file / descriptor FILEDES. The new attributes are taken from the /structure that TERMIOS-P points to/=/void gprs_init() int ij=0,inf=0,numx=0; char rt3100; for(ij=0; ij7; ij+) tty_writecmd(cmdij, strlen(cmdij); bzero(rt3,sizeof(rt3100); inf=read_info(rt3); printf(返回信息:n); printf(%sn,rt3); /=撥叫=/ void gprs_call(char *number, int num) int i=0; tty_write(ATD,3); /發(fā)送撥打命令A(yù)TD tty_write(number,num); tty_write(;,1); tty_write(rn,2); usleep(2000000); printf(正在打電話給:); for(i=0;inum;i+) printf(%c,numberi); /=/int main(void) int kf=0,wr=0,simno=0,rt2n=0,irt2=0; char rt100; char rt2100; char sim=AT+COPS?; char no=135960064*;/電話號(hào)碼 fd = open(/dev/s3c2410_serial0,O_RDWR); if(fd0) perror(open_port error); return; if(kf=set_opt(fd,115200,8,N,1)0) perror(set_opt error); return; gprs_init(); wr=tty_writecmd(sim,strlen(sim); bzero(rt,sizeof(rt100); read_info(rt); if(rt0=0) usleep(500); read_info(rt); if(rt0!=0) printf(獲取SIM卡n); else printf(無(wú)法獲取SIM卡n); return; tty_writecmd(AT+CIMI,strlen(AT+CIMI); /獲取SIM卡的序列號(hào)/ bzero(rt2,sizeof(rt2100); rt2n=read_info(rt2); printf(SIM序號(hào):n); printf(%sn,rt2); tty_writecmd(AT+CGSN,strlen(AT+CGSN); /讀取產(chǎn)品的序列號(hào)/ tty_end(); close(fd);/關(guān)閉設(shè)備文件 return 0; /初始化串口/int set_opt(int fd,int nSpeed, int nBits, char nEvent, int nStop) if ( tcgetattr( fd,&oldtio) != 0) perror(SetupSerial 1); return -1; bzero( &newtio, sizeof( newtio ) ); newtio.c_cflag |= CLOCAL | CREAD; newtio.c_cflag &= CSIZE; switch( nBits ) case 7: newtio.c_cflag |= CS7; break; case 8: newtio.c_cflag |= CS8; break; switch( nEvent ) case O: newtio.c_cflag |= PARENB; newtio.c_cflag |= PARODD; newtio.c_iflag |= (INPCK | ISTRIP); break; case E: newtio.c_iflag |= (INPCK | ISTRIP); newtio.c_cflag |= PARENB; newtio.c_cflag &= PARODD; break; case N: newtio.c_cflag &= PARENB; break; switch( nSpeed ) case 2400: cfsetispeed(&newtio, B2400); cfsetospeed(&newtio, B2400); break; case 4800: cfsetispeed(&newtio, B4800); cfsetospeed(&newtio, B4800); break; case 9600: cfsetispeed(&newtio, B9600); cfsetospeed(&newtio, B9600); break; case 115200: cfsetispeed(&newtio, B115200); cfsetospeed(&newtio, B115200); break; case 460800: cfsetispeed(&newtio, B460800); cfsetospeed(&newtio, B460800); break; default: cfsetispeed(&newtio, B9600); cfsetospeed(&newtio, B9600); break; if( nStop = 1 ) newtio.c_cflag &= CSTOPB; else if ( nStop = 2 ) newtio.c_cflag |= CSTOPB; newtio.c_ccVTIME = 0; newtio.c_ccVMIN = 0; tcflush(fd,TCI