是我早期的作品了,看见大家需要,就发上来供大家参考制作。
装在电脑机箱上面的效果。
红色版的开机画面,被我装在一块光驱挡板上了。
绿色版的开机画面,想显示什么可以自己更改
红色版的背面
绿色版的背面
正面
红色版的PCB
绿色版的PCB
- #include <STC12C5A60S2.h>
- #include<intrins.h>
- #define SAMPLE_NUM 128
- #define LOG 6
- #define TIME 2048 //中断
- #define FFT_OUT_MIN 0
- #define FFT_OUT_MAX 7
- #define OFF L1=L2=L3=L4=L5=L6=L7=L8=L9=L10=L11=L12=L13=L14=L15=L16=L17=L18=L19=L20=L21=L22=L23=L24=1;
- #define ADC_POWER 0x80 //ADC power control bit
- #define ADC_FLAG 0x10 //ADC complete flag
- #define ADC_START 0x08 //ADC start control bit
- #define LED P2 ////阳极接P2口
- #define pwm 9
- //#define ADC_SPEEDLL 0x00 //420 clocks
- //#define ADC_SPEEDL 0x20 //280 clocks
- #define ADC_SPEEDH 0x40 //140 clocks
- //#define ADC_SPEEDHH 0x60 //70 clocks
- //采样存储序列表
- unsigned char code BRTable[SAMPLE_NUM] ={
- 0, 64, 32, 96, 16, 80, 48, 112,
- 8, 72, 40, 104, 24, 88, 56, 120,
- 4, 68, 36, 100, 20, 84, 52, 116,
- 12, 76, 44, 108, 28, 92, 60, 124,
- 2, 66, 34, 98, 18, 82, 50, 114,
- 10, 74, 42, 106, 26, 90, 58, 122,
- 6, 70, 38, 102, 22, 86, 54, 118,
- 15, 79, 47, 111, 31, 95, 63, 127,
- 14, 78, 46, 110, 30, 94, 62, 126,
- 1, 65, 33, 97, 17, 81, 49, 113,
- 9, 73, 41, 105, 25, 89, 57, 121,
- 5, 69, 37, 101, 21, 85, 53, 117,
- 13, 77, 45, 109, 29, 93, 61, 125,
- 3, 67, 35, 99, 19, 83, 51, 115,
- 11, 75, 43, 107, 27, 91, 59, 123,
- 7, 71, 39, 103, 23, 87, 55, 119,
- };
- char code sin_tabb[SAMPLE_NUM] = {
- 0, 6, 12, 18, 24, 30, 36, 42,
- 48, 54, 59, 65, 70, 75, 80, 85,
- 89, 94, 98, 102,105, 108, 112, 114,
- 117, 119, 121, 123, 124, 125, 126, 126,
- 126, 126, 126, 125, 124, 123, 121, 119,
- 117, 114, 112, 108, 105, 102, 98, 94,
- 89, 85, 80, 75, 70, 65, 59, 54,
- 48, 42, 36, 30, 24, 18, 12, 6,
- 0, -6, -12, -18, -24, -30,
- -36, -42, -48, -54, -59, -65, -70, -75,
- -80, -85, -89, -94, -98, -102, -105, -108,
- -112, -114, -117, -119, -121, -123, -124, -125,
- -126, -126, -126, -126, -126, -125, -124, -123,
- -121, -119, -117, -114, -112, -108, -105, -102,
- -98, -94, -89, -85, -80, -75, -70,
- -65, -59, -54, -48, -42, -36, -30,
- -24, -18, -12, -6};
- char code cos_tabb[SAMPLE_NUM] = {127, 126, 126, 125, 124, 123, 121, 119, 117, 114, 112, 108, 105, 102, 98, 94,
- 89, 85, 80, 75, 70, 65, 59, 54, 48, 42, 36, 30, 24, 18, 12, 6, 0, -6, -12, -18, -24, -30, -36, -42, -48, -54, -59,
- -65, -70, -75, -80, -85, -89, -94, -98, -102, -105, -108, -112, -114, -117, -119, -121, -123, -124, -125, -126, -
- 126, -126, -126, -126, -125, -124, -123, -121, -119, -117, -114, -112, -108, -105, -102, -98, -94, -89, -85, -80,
- -75, -70, -65, -59, -54, -48, -42, -36, -30, -24, -18, -12, -6, 0, 6, 12, 18, 24, 30, 36, 42, 48, 54, 59, 65, 70,
- 75, 80, 85, 89, 94, 98, 102, 105, 108, 112, 114, 117, 119, 121, 123, 124, 125, 126, 126};
- xdata unsigned char result[128];
- xdata unsigned char temp[128];
- xdata unsigned char num[128];
- unsigned char anum,timernum,timernum2,lednum3,Ltime,t;//用于分离
- unsigned char lednum[]={0x01,0x03,0x07,0x0f,0x1f,0x3f,0x7f,0xff};//0-7的显示数组 P2组控制
- int xdata FftReal[SAMPLE_NUM];
- int xdata FftImage[SAMPLE_NUM];
- ////开机显示字符************/////
- unsigned char code musicdisplay[]={
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x3C,0x6E,0xED,0xFD,0xFD,0xED,0x6E,0x3C,
- 0x00,0x7F,0x08,0x08,0x08,0x7F,0x00,0x00,//H
- 0x00,0x1F,0x24,0x44,0x24,0x1F,0x00,0x00,//A
- 0x00,0x7F,0x48,0x48,0x48,0x30,0x00,0x00,//P
- 0x00,0x7F,0x48,0x48,0x48,0x30,0x00,0x00,//P
- 0x00,0x70,0x08,0x07,0x08,0x70,0x00,0x00,//Y
- 0x00,0x7F,0x10,0x08,0x04,0x7F,0x00,0x00,//N
- 0x00,0x7F,0x49,0x49,0x49,0x41,0x00,0x00,//E
- 0x00,0x7C,0x02,0x07,0x1F,0x07,0x02,0x7C,//W
- 0x00,0x70,0x08,0x07,0x08,0x70,0x00,0x00,//Y
- 0x00,0x7F,0x49,0x49,0x49,0x41,0x00,0x00,//E
- 0x00,0x1F,0x24,0x44,0x24,0x1F,0x00,0x00,//A
- 0x00,0x7F,0x48,0x4C,0x4A,0x31,0x00,0x00,//R
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- };
- /////////// 列扫描端口
- sbit L24=P0^2;
- sbit L23=P0^1;
- sbit L22=P0^0;
- sbit L21=P1^3;
- sbit L20=P1^4;
- sbit L19=P1^5;
- sbit L18=P1^6;
- sbit L17=P1^7;
- sbit L16=P3^0;
- sbit L15=P3^1;
- sbit L14=P3^2;
- sbit L13=P3^3;
- sbit L12=P3^4;
- sbit L11=P3^5;
- sbit L10=P3^6;
- sbit L9=P3^7;
- sbit L8=P4^4;
- sbit L7=P4^5;
- sbit L6=P4^6;
- sbit L5=P0^7;
- sbit L4=P0^6;
- sbit L3=P0^5;
- sbit L2=P0^4;
- sbit L1=P0^3;
- void delay(unsigned char a)
- {
- unsigned int i;
- while(--a)
- for(i=0;i<50;i++);
- }
- void off()
- {
- LED = 0x00;
- OFF
- // delay(10-pwm);
- }
- void display(unsigned char i,unsigned char dat)
- {
- P2=dat;
- switch(i)
- {
- case 1:L1=0;break;
- case 2:L2=0;break;
- case 3:L3=0;break;
- case 4:L4=0;break;
- case 5:L5=0;break;
- case 6:L6=0;break;
- case 7:L7=0;break;
- case 8:L8=0;break;
- case 9:L9=0;break;
- case 10:L10=0;break;
- case 11:L11=0;break;
- case 12:L12=0;break;
- case 13:L13=0;break;
- case 14:L14=0;break;
- case 15:L15=0;break;
- case 16:L16=0;break;
- case 17:L17=0;break;
- case 18:L18=0;break;
- case 19:L19=0;break;
- case 20:L20=0;break;
- case 21:L21=0;break;
- case 22:L22=0;break;
- case 23:L23=0;break;
- case 24:L24=0;break;
- }
- delay(pwm);
- off();
- }
- void show_musicdisplay()
- {
- unsigned char a,b,c;
- for(c=0;c<80;c++)
- for(b=12;b>0;b--)
- for(a=1;a<25;a++)
- display(a,musicdisplay[a-1+c]);
- }
- void FFT_process() //下落迟滞
- {
- unsigned char i;
- for(i=0;i<24;i++)
- {
- if(result[i] < temp[i])
- {
- num[i]++;
- if(num[i] == 1)
- {
- if(temp[0]==0&&temp[1]==0&&temp[2]==0&&temp[3]==0&&temp[4]==0&&temp[5]==0&&temp[6]==0&&temp[7]==0&&temp[8]==0&&temp[9]==0&&temp[10]==0&&temp[11]==0&&temp[12]==0&&temp[13]==0&&temp[14]==0&&temp[15]==0&&temp[16]==0&&temp[17]==0&&temp[18]==0&&temp[19]==0&&temp[20]==0&&temp[21]==0&&temp[22]==0&&temp[23]==0&&temp[24]==0);
- else
- {
- result[i] = --temp[i];
- num[i] = 0;
- }
- }
- }
- else
- num[i] = 0;
- }
- }
- void disp()
- {
- // unsigned char i,j,buff;
- timernum++;
- if(timernum == 25)
- timernum = 1;
- OFF
- FFT_process();
- /*for(i=0;i<16;i++)
- for(j=i+1;j<16;j++)
- if(result[j] > result[i])
- {
- buff = result[i];
- result[i] = result[j];
- result[j] = buff;
- }*/
- switch(timernum)
- {
- case 1:anum = result[0];L1=0;break;
- case 2:anum = result[1];L2=0;break;
- case 3:anum = result[2];L3=0;break;
- case 4:anum = result[3];L4=0;break;
- case 5:anum = result[4];L5=0;break;
- case 6:anum = result[5];L6=0;break;
- case 7:anum = result[6];L7=0;break;
- case 8:anum = result[7];L8=0;break;
- case 9:anum = result[8];L9=0;break;
- case 10:anum = result[9];L10=0;break;
- case 11:anum = result[10];L11=0;break;
- case 12:anum = result[11];L12=0;break;
- case 13:anum = result[12];L13=0;break;
- case 14:anum = result[13];L14=0;break;
- case 15:anum = result[14];L15=0;break;
- case 16:anum = result[15];L16=0;break;
- case 17:anum = result[16];L17=0;break;
- case 18:anum = result[17];L18=0;break;
- case 19:anum = result[18];L19=0;break;
- case 20:anum = result[19];L20=0;break;
- case 21:anum = result[20];L21=0;break;
- case 22:anum = result[21];L22=0;break;
- case 23:anum = result[22];L23=0;break;
- case 24:anum = result[23];L24=0;break;
- }
- if(anum >= 8)
- anum = FFT_OUT_MAX;
- LED = lednum[anum];
- }
- void ADC_init()
- {
- P1ASF = 0x01; //Open 8 channels ADC function
- ADC_RES = 0; //Clear previous result
- ADC_RESL= 0;
- ADC_CONTR = ADC_POWER | ADC_SPEEDH;
- delay(5); //ADC power-on and delay
- }
- float ADC_read()
- {
- //delay(10);
- ADC_CONTR = ADC_POWER | ADC_SPEEDH | ADC_START;
- _nop_(); //至少要延时4个时钟周期
- _nop_();
- _nop_();
- _nop_();
- _nop_();
- while (!(ADC_CONTR & ADC_FLAG));//Wait complete flag
- ADC_CONTR &= ~ADC_FLAG; //关闭ADC
- return (ADC_RES*4+ADC_RESL); //Return ADC result
- }
- short sqrt_16(unsigned long M)
- {
- unsigned int N,i;
- unsigned long tmp,ttp;
- if( M == 0 )
- return 0;
- N = 0;
- tmp = (M >> 30);
- M <<= 2;
- if( tmp > 1 )
- {
- N++;
- tmp -= N;
- }
- for( i=15; i>0; i-- )
- {
- N <<= 1;
- tmp <<= 2;
- tmp += (M >> 30);
- ttp = N;
- ttp = (ttp<<1)+1;
- M <<= 2;
- if( tmp >= ttp )
- {
- tmp -= ttp;
- N ++;
- }
- }
- return N;
- }
- void FFT()
- {
- register unsigned char i,bb,j,k,p;
- register short TR,TI,temp;
- unsigned long ulReal,ulImage;
- unsigned char max;
- for(i=0;i<SAMPLE_NUM;i++)
- {
- FftReal[BRTable[i]] = ADC_read();
- FftImage[i] = 0;
- }
- for(i=1;i<=LOG;i++)
- {
- bb=1;
- bb <<= (i-1);
- for(j=0;j<=bb-1;j++)
- {
- p=1;
- p <<= (LOG-i);
- p = p*j;
- for(k=j;k<SAMPLE_NUM;k=k+2*bb)
- {
- TR=FftReal[k];TI=FftImage[k];temp=FftReal[k+bb];
- FftReal[k]=FftReal[k]+((FftReal[k+bb]*cos_tabb[p])>>7)+((FftImage[k+bb]*sin_tabb[p])>>7);
- FftImage[k]=FftImage[k] - ((FftReal[k+bb]*sin_tabb[p])>>7)+((FftImage[k+bb]*cos_tabb[p])>>7);
- FftReal[k+bb]=TR-((FftReal[k+bb]*cos_tabb[p])>>7)-((FftImage[k+bb]*sin_tabb[p])>>7);
- FftImage[k+bb]=TI+((temp*sin_tabb[p])>>7)-((FftImage[k+bb]*cos_tabb[p])>>7);
- FftReal[k] >>= 1;
- FftImage[k] >>= 1;
- FftReal[k+bb] >>= 1;
- FftImage[k+bb] >>= 1;
- }
- }
- }
- for(i=0;i<24;i++)
- {
- ulReal = FftReal[i+1];
- ulReal *= ulReal;
- ulImage = FftImage[i+1];
- ulImage *= ulImage;
- result[i] = sqrt_16(ulReal+ulImage);
- }
- /* for(i=0;i<17;i++)
- {
- while(result[i] > FFT_OUT_MAX)
- {
- for(i=0;i<17;i++)
- {
- result[i] =result[i] -1;
- }
- }
- } */
- while(result[i] == FFT_OUT_MIN)
- {
- for(i=0;i<24;i++)
- {
- result[i] =result[i] +1;
- }
- }
- for(i=0;i<24;i++)
- {
- if(result[i] > FFT_OUT_MAX)
- {
- result[i] = FFT_OUT_MAX;
- if(result[i] > max)
- max = result[i];
- }
- }
- //局部增益 */ /*
- /*if(max >= 4)
- for(i=1;i<24;i++)
- if(result[i] >= 2)
- result[i]+=1; */
-
- }
- void init()
- {
- P2M0=0XFF;
- P2M1=0X00;
- P3M0=0XFF;
- P3M1=0X00;
- P1M0=0XFE;
- P1M1=0X01;
- P4SW=0x70;
- ADC_init();
- //AUXR |= 0x80; //定时器时钟1T模式
- TMOD=0x01;
- TH0=(65535-TIME)/256;
- TL0=(65535-TIME)%256;
- EA=1;
- ET0=1;
- show_musicdisplay();
- TR0=1;
- }
- void main()
- {
- init();
- while(1)
- FFT();
- }
- void timer0() interrupt 1
- {
- unsigned char i;
- t++;
- if(t == 24)
- {
- for(i=0;i<24;i++)
- temp[i] = result[i];
- t = 0;
- }
- disp();
- TH0=(65535-TIME)/256;
- TL0=(65535-TIME)%256;
- }
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