Linux下蓝牙参数设置程序

由于项目需要蓝牙功能，前些日子，我负责开发蓝牙模块，这个子项目主要涉及到获取蓝牙模块参数、设置蓝牙参数、多线程收发数据等功能，下面已经可以在Linux下正常使用的蓝牙参数设置获取主要代码。
#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 <sys/signal.h>

typedef unsigned char  U8;
typedef unsigned short U16;
typedef unsigned int   U32;
typedef unsigned int   UINT;

struct termios  newtio, oldtio;
int fd;

UINT downloadAddress, downloadFileSize;
static void Jump_Loop(U32 addr, U32 len);
static void Set_UARTMODE(U32 addr, U32 len);
static void Set_Bind(U32 addr, U32 len);
static void Set_Role(U32 addr, U32 len);
static void Set_Class(U32 addr, U32 len);
static void Set_Name(U32 addr, U32 len);
static void Set_PassWord(U32 addr, U32 len);
static void Set_Auth(U32 addr, U32 len);
static void Set_Baud(U32 addr, U32 len);
static void Serial_Tran(int fd, char ver[]);
Get_Parameter();
Set_Parameter();

int set_opt(int fd, int nSpeed, int nBits, char nEvent, int nStop)
{
 
 if(tcgetattr(fd, &oldtio) != 0)
 {
  perror("SetupSerial 1");
  return -1;
 }
 bzero(&newtio, sizeof(newtio));
 newtio.c_cflag |= CLOCAL | CREAD;
 newtio.c_cflag &= ~CSIZE;

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_cflag |= PARENB;
     newtio.c_cflag &= ~PARODD;
     newtio.c_iflag |= (INPCK | ISTRIP);
     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;
 case 460800:
     cfsetispeed(&newtio, B460800);
     cfsetospeed(&newtio, B460800);
     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] = 0;
 newtio.c_cc[VMIN] = 1;

newtio.c_lflag &=~(ICANON|ECHO|ECHOE|ISIG);
 newtio.c_oflag &=~OPOST;

tcflush(fd,TCIFLUSH);

if((tcsetattr(fd, TCSANOW,&newtio)) != 0)
 {
  perror("\rcom set error");
  return -1;
 }
 printf("\rset done!\n");
 return 0; 
}
int open_port(int fd, int comport)
{

 if(comport == 1) //串口1
 {
  fd = open("/dev/ttyS0", O_RDWR|O_NOCTTY|O_NONBLOCK);
  if(fd < 0)
  {
   perror("\rCan't Open Serial Port");
   return(-1);
  }
 }
 else if(comport == 2) //串口2
 {
  fd = open("/dev/ttyS1", O_RDWR|O_NOCTTY|O_NDELAY);
  if(fd < 0)
  {
   perror("\rCan't Open Serial Port");
   return(-1);
  }
 }
 else if(comport == 3)//串口3
 {
  fd = open("/dev/ttyS2", O_RDWR|O_NOCTTY|O_NONBLOCK);
  if(fd < 0)
  {
   perror("\rCan't Open Serial Port");
   return(-1);
  }

}

if(fcntl(fd, F_SETFL, 0) < 0)
 {
  printf("\rfcntl failed!\n");
 }
 else
 {
  printf("\rfcntl = %d\n", fcntl(fd, F_SETFL, 0));
 }