gprs.c

在嵌入式系统上进行GPRS连接的代码

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
//#include <sys/signal.h>
#include "tty.h"
#include"gprs.h"
extern int key;
void gprs_init()
{ 
	int i;
	char j;

	char str[20];
	for(i=0; i<5; i++) {
		tty_writecmd(cmd[i], strlen(cmd[i])); 
	}

	tty_writecmd("at", strlen("at"));
	tty_writecmd("at+cmgf=1", strlen("at+cmgf=1"));	
	tty_writecmd("at+cnmi=2,1,0,0,0", strlen("at+cnmi=2,1,0,0,0")); 
	for(j='1';j<'4';j++){
        sprintf(str,"at+cmgd=%c",j);
        tty_writecmd(str, strlen(str));           
        usleep(300000);

	}
}

void gprs_hold()
{
	tty_writecmd("at", strlen("at"));
	tty_writecmd("ath", strlen("ath"));//·¢Ë͹һúÃüÁîATH
}

void gprs_ans()
{ 
	tty_writecmd("at", strlen("at"));
	tty_writecmd("ata", strlen("ata"));//·¢ËͽÓÌýÃüÁîATA
}

//²¦½Ð  
void gprs_call(char *number, int num)			
{ 

	tty_write("atd", strlen("atd")); //·¢ËͲ¦´òÃüÁîATD	
	tty_write(number, num);
	tty_write(";\r", strlen(";\r"));
	usleep(200000);
}


//void gprs_msg(char *number,char *text) 			//·¢ËͶÌÐÅ
void gprs_msg(char *number, int num)		
{ 
	char ctl[]={26,0};
	char text[]="Welcome to use up-tech embedded platform!";
	tty_writecmd("at", strlen("at"));
	tty_writecmd("at", strlen("at"));
	tty_writecmd("at+cmgf=1", strlen("at+cmgf=1"));		//·¢ËÍÐÞ¸Ä×Ö·û¼¯ÃüÁî
	tty_write("at+cmgs=", strlen("at+cmgs="));	//·¢ËÍ·¢¶ÌÐÅÃüÁ¾ßÌå¸ñʽ¼ûÊÖ²á

 	tty_write("\"", strlen("\""));
    	tty_write(number, strlen(number));
    	tty_write("\"", strlen("\""));
    	tty_write(";\r", strlen(";\r"));
    
 
	tty_write(text, strlen(text));
	tty_write(ctl, 1);
	usleep(300000);
//	Uart_SendByte(1,26); //¡°CTRL+Z"µÄASCIIÂë
}

void gprs_showmsg()
{
	key=1;

	tty_writecmd("at+cmgr=1", strlen("at+cmgr=1"));
	fflush(stdout);
	usleep(12000000);
	key=0;
	tty_writecmd("at+cmgd=1", strlen("at+cmgd=1"));
	usleep(200000);

}

void gprs_baud(char *baud,int num)
{
	tty_write("at+ipr=", strlen("at+ipr="));
	tty_writecmd(baud, strlen(baud) );
	usleep(200000);
}