嵌入式linux序列槽程式設計（二）

/*com_writer.c*/

#include "uart_api.h"

int main(void)

{

 int fd;

 char buff[BUFFER_SIZE];

 if((fd=open_port(HOST_COM_PORT))<0)  /*打開序列槽*/

 {

  perror("open serial error");

  return 1;

 }

 if(set_com_config(fd,115200,8,'N',1)<0) /*配置序列槽*/

  perror("set_com_config error");

 do

  printf("Input some words(enter 'quit' to exit):");

  memset(buff,0,BUFFER_SIZE);

  if(fgets(buff,BUFFER_SIZE,stdin)==NULL)

  {

   perror("fgets");

   break;

  }

  write(fd,buff,strlen(buff));

 }while(strncmp(buff,"quit",4));

 close(fd);

 return 0;

}

/*com_reader.c*/

#define COM_TYPE GNR_COM

 if((fd=open_port(TARGET_COM_PORT))<0)

  if(read(fd,buff,BUFFER_SIZE)>0)

   printf("the receive words are:%s",buff);

/*uart_api.h*/

#include<errno.h>

#include<stdio.h>

#include<stdlib.h>

#include<string.h>

#include<sys/types.h>

#include<sys/stat.h>

#include <termios.h>

#include <fcntl.h>

#include <time.h>

#include <unistd.h>

#include <ctype.h>

#define HOST_COM_PORT 1

#define BUFFER_SIZE  4096

#define MAX_COM_NUM  5

#define TARGET_COM_PORT 1

extern int open_port(int com_port);

extern int set_com_config(int fd,int baud_rate, int data_bits,char parity,int stop_bits);