bt.cpp

嵌入式LINUX的智能家居系统源码

#include"bt.h"
#include<unistd.h>
#include<sys/socket.h>
#include<bluetooth/bluetooth.h>
#include<bluetooth/hci.h>
#include<bluetooth/hci_lib.h>
#include<bluetooth/rfcomm.h>
#include<stdio.h>
#include<pthread.h>


#define dest "00:02:72:B0:07:C5"

struct sockaddr_rc addr;
int sock;
bool stop_bt;
void * bt_receiver(void * data)
{
	BT * bt = (BT *)data;
	int cmd;
	while(!stop_bt)
	{
		read(sock,&cmd,sizeof(int));
		bt->emit_sig(cmd);
	}
	
}
void BT::switcher(int cmd)
{
	int cmd_t;
	switch(cmd & 0xff)
	{
		case start_bt_connect :
			if(!bt_on)			
			{			
				if(setup_connection())
				{	
								
					bt_on = true;
					cmd_t =bt_connected;
					cmd_t |= ui;
					cmd_t |= TO(PDA_CMD);
					emit sig_cmd(bt_connected);
				}
				else
				{
					bt_on = false;
					cmd_t =bt_start_error;
					cmd_t |= ui;
					cmd_t |= TO(PDA_CMD);
					emit sig_cmd(bt_start_error);
				}
			}
			else
			{emit sig_cmd_ker(bt_connected);}
			break;
		case bt_disconnect:
			bt_on = false;
			stop_connection();
			cmd_t =bt_disconnected;
			cmd_t |= ui;
			cmd_t |= TO(PDA_CMD);
			emit sig_cmd(cmd_t);
		default:
			printf("error ker bt wrong cmd \n");
		break;
	}
}
void BT::emit_sig(int cmd)
{
	emit sig_cmd(cmd);
}
void BT::start_BT_reader()
{
	stop_bt = false;
	pthread_create(&th_bt_reader,NULL,bt_receiver,(void *)this);
}
BT::BT()
{
	bt_on = false;
	stop_bt = true;
}
BT::~BT()
{}
void BT::write_BT(int cmd)
{
	int status;
	status=write(sock,&cmd,sizeof(int));
    if(status<0)perror("send order error!");
}

int connect_bt()
{
	return connect(sock,(struct sockaddr *)&addr,sizeof(addr));
}

void BT::stop_connection()
{
	stop_bt = true;
	close(sock);
}

bool BT::setup_connection()
{
	int status;
  
	//检查主机上的蓝牙地址
	if(strlen(dest)!=17)printf("BD Address Invalid!!\n");
  
	sock=socket(PF_BLUETOOTH,SOCK_STREAM,BTPROTO_RFCOMM);//创建套接字
	if(sock<0)
	{
	printf("create socket error!!\n");
	return false;
	}
  
	addr.rc_family=AF_BLUETOOTH;
	addr.rc_channel=(uint8_t)1;
	str2ba(dest,&addr.rc_bdaddr);//把形如XX:XX:XX:XX:XX:XX(XX标识48位蓝牙地址的16进制的一个字节)的字符串转化6字节的bdaddr_t结构
  
	status=connect_bt();//连接服务器端
  
	if(0==status)
	{
	  	printf("bluetooth connect success!!\n");
	}
 	 else
 	 {
  		printf("bluetooth connect failed!!\n");
  		return false;
 	 }
	return true;
}