51单片机+DMX512协议实现LED调光

#include <STC12C5A60S2.H> #include <intrins.h> #define FOSC 24000000L //系统频率 #define BAUD 250000 //串口波特率 unsigned int ms; unsigned char num,num1,num2,num3; //unsigned char send_data[]={0x00,0xf0,0x82,0x10,0x00,0x00,0x00,0x00}; //1.总调光 2.总频闪 3.功能选择0-39DMX，40-79跳变，80-119渐变，120-159脉变，160-199流水 4.功能速度 5.R 6.G 7.B 8.W unsigned char send_data[]={0xf0,0x00,0x00,0x00,0xf0,0x00,0x00,0xf0}; void init(); void yanshi(ms); void Delay88us(); //@24.000MHz void Delay8us(); //@24.000MHz void Delay4us(); //@24.000MHz void DMX512_SendData(); //发送数据 void effect_1(); //红渐变绿 void effect_2(); //渐灭 void init() //250000bps@24.000MHz { PCON &= 0x7F; //波特率不倍速 SCON = 0xD0; //9位数据,可变波特率 AUXR |= 0x40; //定时器时钟1T模式 AUXR &= 0xFE; //串口1选择定时器1为波特率发生器 TMOD &= 0x0F; //设置定时器模式 TMOD |= 0x20; //设置定时器模式 TH1 = TL1 = 0xfd; //(256-FOSC/32/BAUD) TR1 = 1; P0=0xff; P1=0xff; P2=0xff; yanshi(500); } void yanshi(ms) //@24.000MHz { unsigned int t; for(t=ms;t>0;t--) { unsigned char i, j; _nop_(); _nop_(); i = 24; j = 84; do { while (--j); } while (--i); } } void Delay88us() //@24.000MHz { unsigned char i, j; _nop_(); _nop_(); i = 3; j = 9; do { while (--j); } while (--i); } void Delay8us() //@24.000MHz { unsigned char i; i = 45; while (--i); } void DMX512_SendData() { unsigned int k; P31 = 1; //MTBP // _nop_(); P31 = 0; //break Delay88us(); P31 = 1; //MAB Delay8us(); TB8 = 1; //SC SBUF = 0x00; while (!TI); TI=0; //------------------------------- for(k=0;k<8;k++) { TB8=1; SBUF=send_data[k]; while(!TI); TI=0; } //------------------------------- // for(k=0;k<512-8;k++) // { // TB8=1; // SBUF=0x00; // while(!TI); // TI=0; // } P31=1; } void effect_1() { unsigned char n; if(send_data[4]>=send_data[5]) { send_data[0]=0xf0; send_data[1]=0x00; send_data[2]=0x00; send_data[3]=0x00; send_data[4]=0xf0; send_data[5]=0x00; send_data[6]=0x00; send_data[7]=0x10; DMX512_SendData(); // send_data[8]={0xf0,0x00,0x00,0x00,0xf0,0x00,0x00,0xf0}; for(n=send_data[5];send_data[4]>0&send_data[5]<256;) { send_data[4]=send_data[4]-1; send_data[5]=send_data[5]+1; DMX512_SendData(); yanshi(8); } } else { send_data[0]=0xf0; send_data[1]=0x00; send_data[2]=0x00; send_data[3]=0x00; send_data[4]=0x00; send_data[5]=0xf0; send_data[6]=0x00; send_data[7]=0x10; DMX512_SendData(); } } void effect_2() //渐灭 { unsigned char n; if(send_data[0]>1) { send_data[0]=0xf0; send_data[1]=0x00; send_data[2]=0x00; send_data[3]=0x00; send_data[4]=0xf0; send_data[5]=0x00; send_data[6]=0x00; send_data[7]=0xf0; DMX512_SendData(); for(n=send_data[0];n>0;n--) { send_data[0]=n; DMX512_SendData(); yanshi(9); } } else { send_data[0]=0x00; send_data[1]=0x00; send_data[2]=0x00; send_data[3]=0x00; send_data[4]=0x00; send_data[5]=0x00; send_data[6]=0x00; send_data[7]=0x00; DMX512_SendData(); } // send_data[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; } void Max232() interrupt 4 //232数据串口 { } void main() { init(); while(1) { // DMX512_SendData(); // while(1); while(!P10) { effect_1(); //红渐变绿 OK } while(!P11) { effect_2(); //渐灭 OK } } }