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Device Drivers--->
       character devices--->
              Serial drivers--->
                     <*>Samssung S3C2440/S3C2442 Serial port support
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uart_init.h
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uart_init.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <error.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <termios.h>
 
int open_termios(char *dev)
{
       int fd = -1;
       if(-1 == (fd = open(dev,O_RDWR|O_NOCTTY|O_NONBLOCK)))
       {
              printf("open termios error!\n");
       }
       return fd;
}
 
int set_termios(int fd,long speed,char databit,char stopbit,char oebit)
{
       struct termios newtio;
       int err = -1;
      
       //ÇåÁã½á¹¹Ìå
       bzero(&newtio,sizeof(newtio));
       //ÉèÖýÓÊÕʹÄÜ
       newtio.c_cflag |= CLOCAL | CREAD;
       // ÉèÖÃÊý¾Ýλ
       switch(databit)
       {
              case 7:
&n


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