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serial.c
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serial.c
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#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <errno.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <termios.h>
#include <stdlib.h>
#include <ctype.h>
#include <time.h>
/***************************************************************************/
/* Function name : int set_opt(int fd,int nSpeed, int nBits, char nEvent, int nStop);*/
/* Description : 设置波特率,数据位,奇偶校验位,停止位 */
/* Return type :int
//*Argument : fd:打开文件 speed:波特率 bit:数据位 neent:奇偶校验位 stop:停止位 */
/***************************************************************************/
int set_opt(int fd,int nSpeed, int nBits, char nEvent, int nStop)
{
struct termios newtio,oldtio;
if ( tcgetattr( fd,&oldtio) != 0) {
perror("SetupSerial 1");
return -1;
}
bzero( &newtio, sizeof( newtio ) );
newtio.c_cflag |= CLOCAL | CREAD;
newtio.c_cflag &= ~CSIZE;
newtio.c_oflag &= ~(ONLCR | OCRNL);
newtio.c_iflag &= ~(IXON | IXOFF | IXANY);
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;
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_cc[VTIME] =5; //测试时该大一点
newtio.c_cc[VMIN] = 0;//set min read byte!
//newtio.c_cc[VSUSP] = 0;
tcflush(fd,TCIFLUSH);
if((tcsetattr(fd,TCSANOW,&newtio))!=0)
{
perror("com set error");
return -1;
}
printf("set done!\n");
return 0;
}
/****************************************************************************/
/* Function name : int open_port(int fd,int comport); */
/* Description : 打开串口0/1/2 */
/* Return type :int */
//* Argument : fd:打开文件 comport:打开的端口 */ */
/****************************************************************************/
int open_port(int fd,int comport)
{
char *dev[]={"/dev/tanghao2440_serial0","/dev/tanghao2440_serial1","/dev/tanghao2440_serial2"};
long vdisable;
if (comport==0)
{ fd = open( "/dev/tanghao2440_serial0", O_RDWR|O_NOCTTY|O_NDELAY);
if (-1 == fd){
perror("Can't Open Serial Port");
return(-1);
}
else
printf("open tanghao2440_serial0 .....\n");
}
else if(comport==1)
{ fd = open( "/dev/tanghao2440_serial1", O_RDWR|O_NOCTTY|O_NDELAY);
if (-1 == fd){
perror("Can't Open Serial Port");
return(-1);
}
else
printf("open tanghao2440_serial1 .....\n");
}
else if (comport==2)
{
fd = open( "/dev/tanghao2440_serial2", O_RDWR|O_NOCTTY|O_NDELAY);
if (-1 == fd){
perror("Can't Open Serial Port");
return(-1);
}
else
printf("open tanghao2440_serial2 .....\n");
}
if(fcntl(fd, F_SETFL, 0)<0)
printf("fcntl failed!\n");
else
printf("fcntl=%d\n",fcntl(fd, F_SETFL,0));
if(isatty(STDIN_FILENO)==0)
printf("standard input is not a terminal device\n");
else
printf("isatty success!\n");
printf("fd-open=%d\n",fd);
return fd;
}
int main(int argc, char **argv)
{
int fd;
int i;
int nread=0;
int nwrite=0;
/*
char buf[] = "AT+CMGF=1";
char buf1 = 0x0d;
char buf2[] = "AT+CMGS=";
//char buf2_1 ='\"';
char buf2_2[] = "\"13427305491\"";
char buf3[] = "hello,ni hao";
//char buf4 = 0x1A;
//char buf4[] ="Ctrl-z";
*/
if(( fd=open_port(fd,0)) < 0){
perror("open_port error");
return -1;
}
if(( i=set_opt(fd,9600,8,'N',1) ) < 0){
perror("set_opt error");
return -1;
}
/*
nwrite = write(fd,buf,sizeof(buf));
nwrite = write(fd,buf1, sizeof(buf1));
sleep(1);
nwrite = write(fd,buf2,sizeof(buf2));
//nwrite = write(fd,buf2_1,sizeof(buf2_1));
nwrite = write(fd,buf2_2,sizeof(buf2_2));
//nwrite = write(fd,buf2_1,sizeof(buf2_1));
nwrite = write(fd,buf1, sizeof(buf1));
sleep(1);
nwrite = write(fd,buf3,sizeof(buf3));
//nwrite = write(fd,buf4,sizeof(buf4));
nwrite = write(fd,"\x1a",1);
sleep(1);
*/
//打电话
//nwrite = write(fd,"ATD13750362962;\r",16);
//sleep(1);
//发短信
nwrite = write(fd,"AT\r",sizeof("AT\r"));
usleep(100000);
nwrite = write(fd,"AT+CMGF=1\r",sizeof("AT+CMGF=1\r"));
usleep(100000);
nwrite = write(fd,"AT+CSMP=17,167,0,0\r",sizeof("AT+CSMP=17,167,0,0\r"));
usleep(100000);
nwrite = write(fd,"AT+CSCS=GSM\r", sizeof("AT+CSCS=GSM\r"));
usleep(100000);
nwrite = write(fd,"AT+CMGS=\"13750362962\"\r",sizeof("AT+CMGS=\"13750362962\"\r"));
usleep(50000);
nwrite = write(fd,"hello\x1A",sizeof("hello\x1A"));
usleep(50000);
/*
nwrite = write(fd, "AT+CMGF=1\r", sizeof("AT+CMGF=1\r"));
usleep(100000);
nwrite = write(fd, "AT+CMGS=\"13750362962\"\r", sizeof("AT+CMGS=\"13750362962\"\r"));
usleep(50000);
nwrite = write(fd,"hello\x1a",sizeof("hello\x1a"));
sleep(2);
*/
close(fd);
return 0;
}