rgb灯音乐律动 java 音乐律动rgb呼吸灯程序

摘要

这篇文章通过定时器产生PWM波，控制LED实现呼吸灯的效果，并且通过三路PWM分别控制RGB三色灯，实现了颜色渐变。最后通过调制PWM频率，使用蜂鸣器实现了音乐播放。

PWM简介

Pulse Width Modulation 翻译成中文是 脉冲宽度调制，简单的可以理解为PWM就是控制方波的频率和占空比

RGB灯渐变源代码

/*
接线方法：

P0.4 -- 红灯
P0.5 -- 绿灯
P0.6 -- 蓝灯
*/
#include <ioCC2530.h>

//定义控制灯的端口
#define LED1 P1_0 //定义LED1为P1_0口控制
#define LED2 P1_5 //定义LED2为P1_5口控制
#define LED3 P1_3 //定义LED3为P1_3口控制
#define LED4 P1_4 //定义LED4为P1_4口控制

#define SW1 P1_2        //定义SW1为P1_2端口
#define SW2 P0_1        //定义SW2为P0_1端口

#define SRCLK P0_4
#define RCLK  P0_5
#define SER   P0_6

#define LEDS0 P0_7
#define LEDS1 P1_7
#define LEDS2 P0_0
/****************************
//延时
*****************************/
char pause = 0;
void Delay_mS(unsigned int n)
{
    unsigned int tt,i = 0; 
    for(i = 0; i < n; i ++)
        for(tt = 0; tt<1040; tt++);
     while(pause);
}

void Delay_uS(unsigned int n)
{
  unsigned int i = 0;
  for(;i < n; i++);
}

/****************************
//初始化函数
*****************************/
void Initial(void)
{
        CLKCONCMD = 0x80; //32MHz 外部晶振
        P0DIR = 0xFF;
        P0SEL = 0xFF;    //设置P0为外设功能
        P2DIR = 0xC0;    //设置Timer外设引脚的优先级
        
        //配置工作模式和分频系数
        T1CTL = 0x01;
        
        T1CCTL2 = 0x24;   //设置T1输出的通道2，Channel 2 
        T1CCTL3 = 0x24;   //设置T1输出的通道3，Channel 3
        T1CCTL4 = 0x24;   //设置T1输出的通道4，Channel 4
        
        T1CC2L = 0x10;    
        T1CC2H = 0x00;
            
        T1CC3L = 0x10;    
        T1CC3H = 0x00;
            
        T1CC4L = 0x10;    
        T1CC4H = 0x00;    
}
/***************************
//主函数
***************************/
void main(void)
{      
      unsigned short r = 60000;
      unsigned short g = 300;
      unsigned short b = 300;
      
      int stage = 1;
      Initial();  //调用初始化函数
      while(1)
      {
        if(stage == 1)
        {
            r -= 300;
            g += 300;
            
            if(g == 60000) 
            {
              stage = 2;
            }
        }
        else if(stage == 2)
        {
            g -= 300;
            b += 300;
            if(b == 60000) 
            {
              stage = 3;
            }
        }
        else if(stage == 3)
        {
            b -= 300;
            r += 300;
            if(r == 60000) 
            {
              stage = 1;
            }
        }
        
        T1CC2L = r;
        T1CC2H = r>>8;
        T1CC3L = g;
        T1CC3H = g>>8;
        T1CC4L = b;
        T1CC4H = b>>8;
        Delay_mS(10);
      }
}

音符与频率对应关系

播放音乐源代码

/*
接线方法：
P0.6连接蜂鸣器
*/
#include <ioCC2530.h>

//定义控制灯的端口
#define LED1 P1_0 //定义LED1为P1_0口控制
#define LED2 P1_5 //定义LED2为P1_5口控制
#define LED3 P1_3 //定义LED3为P1_3口控制
#define LED4 P1_4 //定义LED4为P1_4口控制

#define SW1 P1_2        //定义SW1为P1_2端口
#define SW2 P0_1        //定义SW2为P0_1端口

#define SRCLK P0_4
#define RCLK  P0_5
#define SER   P0_6
#define LEDS0 P0_7
#define LEDS1 P1_7
#define LEDS2 P0_0

/****************************
//延时
*****************************/
char pause = 0;
void Delay_mS(unsigned int n)
{
	unsigned int tt,i = 0;
	for(i = 0; i < n; i ++)
	for(tt = 0; tt<1040; tt++);
	while(pause);
}

void Delay_uS(unsigned int n)
{
  unsigned int i = 0;
  for(;i < n; i++);
}
/****************************
//初始化函数
*****************************/
void Initial(void)
{
	CLKCONCMD = 0x88;
	
	P0DIR = 0xFF;
	P1DIR = 0xFB;//将P12设为输入，其他设为输出 (0xFB = 11111011)
	LED1 = 0;//关闭LED1
	LED2 = 0;//关闭LED2
	LED3 = 0;//关闭LED3
	LED4 = 0;//关闭LED4
	P0SEL |= 0x40;    //设置P0.6为外设功能
	
	//配置工作模式和分频系数
	T1CTL = 0x0E;
	T1CCTL4 = 0x24;   //设置T1通道4比较输出功能
	T1CC4L = 0xA;    //设置T1CC4,PWM输出时比较值值
	T1CC4H = 0x00; 
}
void PWM_Play(int tune, int time)
{
      if(tune == 0)
      {
        P0SEL  = 0x00; 
        P0_6   = 0; 
        Delay_mS(time);
        P0SEL |= 0x40; 
        return;
      }
      T1CNTL = 0;
      T1CNTH = 0;
      T1CC0L = 125000/tune;
      T1CC0H = (125000/tune) >> 8;
      Delay_mS(time);
}

void birth()
{
	  PWM_Play(784,500);
	  PWM_Play(0, 25);
	  PWM_Play(784,500);
	  PWM_Play(880,1000);
	  PWM_Play(784,1000);
	  PWM_Play(1046,1000);
	  PWM_Play(988,2000);
	  
	  PWM_Play(0, 300);
	  
	  PWM_Play(784,500);
	  PWM_Play(0, 25);
	  PWM_Play(784,500);
	  PWM_Play(880,1000);
	  PWM_Play(784,1000);
	  PWM_Play(1175,1000);
	  PWM_Play(1046,2000);
	  PWM_Play(0, 1000);
}

void mamahao()
{
	PWM_Play(880,1500);
	PWM_Play(784,500);
	PWM_Play(659,1000);
	PWM_Play(784,1000);
	PWM_Play(1046,1000);
	PWM_Play(880,500);
	PWM_Play(784,500);
	PWM_Play(880,2000);
	
	PWM_Play(0, 1000);
}
/***************************
//主函数
***************************/
void main(void)
{      
 	Initial();  //调用初始化函数
    PWM_Play(0, 100);
    
 	while(1)
 	{
		birth()；
		mamahao();
 	}
}