51 single chip microcomputer Bluetooth/WiFi wireless remote control smart home system design simulation physical serial port music Bluetooth relay PWM temperature

51 MCU
Bluetooth/WiFi wireless remote control smart home system design

Modify the PWM duty cycle, the higher the duty cycle, the brighter the lighter; the lower the duty cycle, the darker the lighter.

Use passive buzzer to play Sky City music.

Display the temperature of ds18b20.

Part of the code:

void main()
{
    
    
	LCD_init();//初始化
	LCD_write_str( 0, 1, "hello~" );
	
	
	SerInit();
	
	
	Print_Str("test");//测试用
	
	DULA=1;
	P0=0X00;
	DULA=0;
	
	WELA=1;
	P0=0X00;
	WELA=0;
	
	while ( 1 )
	{
    
    
		if ( mode == 1 )
		{
    
    
			u = 0;                                          /* 从第1个音符f[0]开始播放 */
			while ( music0[u] != 0xff )                     /* 只要没有读到结束标志就继续播放 */
			{
    
    
				C	= 460830 / music0[u];
				TH0	= (8192 - C) / 32;              /* 可证明这是13位计数器TH0高8位的赋初值方法     5 */
				TL0	= (8192 - C) % 32;              /* 可证明这是13位计数器TL0低5位的赋初值方法 */
				TR0	= 1;                            /* 启动定时器T0 */
				for ( t = 0; t < music0_JP[u]; t++ )    /* 控制节拍数 */
					delay1();                       /* 延时1个节拍单位 */
				TR0 = 0;                                /* 关闭定时器T1 */
				u++;                                    /* 播放下一个音符 */
			}
			TR0	= 0;                                    /* 关闭定时器 */
			sound	= 1;                                    /* 关闭蜂鸣器 */
		}else if ( mode == 2 )
		{
    
    
			temp = getTmpValue();
			DisplayTEMP( temp );
			
			sound	= 1;     
			
			delayMs(10);
		}
	}
}



void Uart_isr() interrupt 4             /* 中断接收程序 */
{
    
    
	if ( RI )                       /* 判断是否接收完，接收完成后，由硬件置RI位 */
	{
    
    
		Txd_data	= SBUF; /* 读入缓冲区 */
		RI		= 0;    /* 清标志 */
		SBUF		= Txd_data;
		while ( !TI )
			;               /* 等待发送结束 */
		TI = 0;                 /* 清除结束标志，以便再发送数据 */

	
	  
		
		if ( Txd_data == '1' )
		{
    
    
			WELA=1;
	    P0=0X00;
	    WELA=0;
			
			mode = 0;
			init_timer0_pwm();
		}else if ( Txd_data == '2' )
		{
    
    
			if ( ZHANKONGBI < 9 )
				ZHANKONGBI++;

			SBUF = '0' + ZHANKONGBI;
			while ( !TI )
				;       /* 等待发送结束 */
			TI = 0;         /* 清除结束标志，以便再发送数据 */
		}else if ( Txd_data == '3' )
		{
    
    
			
			
			if ( ZHANKONGBI > 0 )
				ZHANKONGBI--;

			SBUF = '0' + ZHANKONGBI;
			while ( !TI )
				;       /* 等待发送结束 */
			TI = 0;         /* 清除结束标志，以便再发送数据 */
		}else if ( Txd_data == '4' )
		{
    
    
			init_timer0_yinyue();
			mode = 1;
			
			WELA=1;
	    P0=0X00;
	    WELA=0;
			
		}else if ( Txd_data == '5' )
		{
    
    
			mode	= 5;
			WELA	= 1;    /* 改变电压之前先拉高 */
			D6RL	= 1;
			WELA	= 0;    /* 改变完了就拉低锁存 */
		}else if ( Txd_data == '6' )
		{
    
    
			mode	= 5;
			WELA	= 1;    /* 改变电压之前先拉高 */
			D6RL	= 0;
			WELA	= 0;    /* 改变完了就拉低锁存 */
		}else if ( Txd_data == '7' )
		{
    
    
			mode = 2;
			
			WELA=1;
	    P0=0X00;
	    WELA=0;
		}
	}
}


sbit LED = P1 ^ 0;
/* ==================定时器1中断服务程序=============== */
void timer0_server( void )
interrupt 1
{
    
    
	/* mode=0 pwm */
	if ( mode == 0 )
	{
    
    
		TH0	= (65536 - 1000) / 256;
		TL0	= (65536 - 1000) % 256;


		pwm_count++;
		if ( pwm_count == 10 )
		{
    
    
			pwm_count	= 0;
			LED		= 0;
		}
		if ( ZHANKONGBI == pwm_count )
		{
    
    
			LED = 1;
		}
	}else if ( mode == 1 )
	{
    
    
		/* mode=1 yinyue */
		sound	= !sound;               /* 将P3.7引脚输出电平取反，形成方波 */
		TH0	= (8192 - C) / 32;      /* 可证明这是13位计数器TH0高8位的赋初值方法 */
		TL0	= (8192 - C) % 32;      /* 可证明这是13位计数器TL0低5位的赋初值方法 */
	}
}