呼吸灯的c51程序

型号只能同时控制两路。在网上找到有控制16路的，目前还看不懂。

看来流星灯的制作，还是有点小困难的。还得继续研究。

下面是两路的程序

#include reg52.h>//设置sfrsfr CCON = 0xD8;sfr CMOD = 0xD9;sfr CL = 0xE9;sfr CH = 0xF9;sfr CCAP0L = 0xEA;sfr CCAP0H = 0xFA;sfr CCAP1L = 0xFB;sfr CCAP1H = 0xFB;sfr CCAPM0 = 0xDA;sfr CCAPM1 = 0xDB;sbit CR = 0xDE;void PWM_init(void){CMOD = 0x02;//设置PCA定时器CL = 0x00;CH = 0x00;//PWM0的设置CCAPM0 = 0x42;CCAP0L = 0x00;CCAP0H = 0x00;//PWM1的设置CCAPM1 = 0x42;CCAP0L = 0x00;CCAP0H = 0x00;CR = 1;//启动PCA定时器}//设置PWM0的参数void PWM0_set(unsigned char a){CCAP0L = a;CCAP0H = a;}//设置PWM1的参数void PWM1_set(unsigned char a){CCAP1L = a;CCAP1H = a;}void delay (unsigned int a){ // 0.1ms延时程序（12MHz 10倍于51单片机速度时）unsigned char i;while( --a != 0){for(i = 0; i  12; i++);}                     }void main(void){unsigned int i;PWM_init();//PWM初始化PWM0_set(0x00);//设置PWM0占空比PWM1_set(0x00);//设置PWM1占空比while(1){for(i = 0;i  256;i++){PWM0_set(i);PWM1_set(256 - i);delay(100);}for(i = 256;i > 0;i--){PWM0_set(i);PWM1_set(256 - i);delay(100);}}}