?? serial.cpp
字號:
#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<fcntl.h>
#include<termios.h>
#include<errno.h>
int speed_arr[] = { B57600, B38400, B19200, B9600, B4800, B2400, B1200,
B300, B57600, B38400, B19200, B9600, B4800, B2400, B1200, B300, };
int name_arr[] = {57600, 38400, 19200, 9600, 4800, 2400, 1200, 300,
57600, 38400, 19200, 9600, 4800, 2400, 1200, 300, };
void set_speed(int fd, int speed)
{
int i;
int status;
struct termios Opt;
tcgetattr(fd, &Opt);
for ( i= 0; i < sizeof(speed_arr) / sizeof(int); i++)
{
if (speed == name_arr[i])
{
tcflush(fd, TCIOFLUSH);
cfsetispeed(&Opt, speed_arr[i]);
cfsetospeed(&Opt, speed_arr[i]);
status = tcsetattr(fd, TCSANOW, &Opt);
if (status != 0)
perror("tcsetattr fd1");
return;
}
tcflush(fd,TCIOFLUSH);
}
}
int set_Parity(int fd,int databits,int stopbits,int parity, int timeout)
{
struct termios options;
if( tcgetattr( fd,&options) != 0)
{
perror("SetupSerial 1");
return -1;
}
options.c_cflag &= ~CSIZE;
switch (databits) /*璁劇疆鏁版嵁浣嶆暟*/
{
case 7:
options.c_cflag |= CS7;
break;
case 8:
options.c_cflag |= CS8;
break;
default:
fprintf(stderr,"Unsupported data size\n");
return -1;
}
switch (parity)
{
case 'n':
case 'N':
options.c_cflag &= ~PARENB; /* Clear parity enable */
options.c_iflag &= ~INPCK; /* Enable parity checking */
break;
case 'o':
case 'O':
options.c_cflag |= (PARODD | PARENB); /* 璁劇疆涓哄
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