51单片机驱动08接口全彩LED单元板

首先来介绍一下LED单元板，LED单元板说白了就是LED点阵模块，一个模块是由偶数个8*8的小LED模块构成，每一个8*8LED模块采用一块移位存储寄存器（74HC595）和一块移位寄存器（74HC138）来驱动8*8LED模块的显示。

LED单元板的显示采用动态扫描的方式，简单地说就是逐行轮流点亮，这样扫描驱动电路就可以实现16行的同名列共用一套列驱动器。在轮流点亮一遍的过程中，每行LED点亮的时间是几位短暂的，如果以1ms计算，扫描16行则只需16ms，扫描频率为1000/16=62.5HZ，由于这个频率足够快，给人眼的视觉印象就会是在连续稳定地显示，并不觉察有闪烁现象。

为了实现汉字的扫描，需要制作汉字字模数据，汉字字模的数据需要用取模软件来提取，下图是我提取字模时的参数设置：

贴出程序：

/*µ¥Æ¬»ú£ºSTC12C5A60S2*///×°ÔØÍ·Îļþ#include <reg52.h>#include <intrins.h>//Êý¾ÝÀàÐͶ¨Òåtypedef unsigned char u8;typedef unsigned int u16;typedef unsigned long u32;//STC12C5A60S2 ÉùÃ&pide;GPIO¶Ë¿ÚÏà¹ØµÄ¼Ä´æÆ&pide;sfr P0M0=0X94;sfr P0M1=0X93;sfr P1M0=0X92;sfr P1M1=0X91;sfr P2M0=0X96;sfr P2M1=0X95;//STC12C5A60S2 ÉùÃ&pide;ÓëPCAÏà¹ØµÄ¼Ä´æÆ&pide;sfr CCON=0XD8;//PCA¿ØÖÆ¿ØÖƼĴæÆ&pide;sbit CCF0=CCON^0;//PCAÄ£¿é0ÖжϱêÖ¾sbit CCF1=CCON^1;//PCAÄ£¿é1ÖжϱêÖ¾sbit CR=CCON^6;//PCA¼ÆÊýÆ&pide;ÕóÁÐÔËÐпØÖÆλsbit CF=CCON^7;//PCA¼ÆÊýÆ&pide;ÕóÁÐÒç³ö±ê־λsfr CMOD=0XD9;//PCA¹¤×&pide;ģʽ¼Ä´æÆ&pide;sfr CL=0XE9;//PCAµÄ16λ¼ÆÊýÆ&pide; µÍ8λ ¸´Î»ÖµÎª00H ±£´æPCAµÄ×°ÔØÖµsfr CH=0XF9;//PCAµÄ16λ¼ÆÊýÆ&pide; ¸ß8λ ¸´Î»ÖµÎª00H ±£´æPCAµÄ×°ÔØÖµsfr CCAPM0=0XDA;//PCAÄ£¿é0µÄ±È½Ï/²¶»ñ¼Ä´æÆ&pide;//µ±PCAÄ£¿éÓÃÓÚPWMģʽʱ£¬CCAPXLºÍCCAPXHÓÃÀ´¿ØÖÆÊä³öµÄÕ¼¿Õ±È ¸´Î»ÖµÊÇ00Hsfr CCAP0L=0XEA;//PCAÄ£¿é0¼Ä´æÆ&pide;µÄµÍλ×Ö½Úsfr CCAP0H=0XFA;//PCAÄ£¿é0¼Ä´æÆ&pide;µÄ¸ßλ×Ö½Úsfr CCAPM1=0XDB;//PCAÄ£¿é1µÄ±È½Ï/²¶»ñ¼Ä´æÆ&pide;sfr CCAP1L=0XEB;//PCAÄ£¿é1¼Ä´æÆ&pide;µÄµÍλ×Ö½Úsfr CCAP1H=0XFB;//PCAÄ£¿é1¼Ä´æÆ&pide;µÄµÍλ×Ö½Úsfr PCAPWM0=0XF2;//PCAÄ£¿éPWM¼Ä´æÆ&pide;0sfr PCAPWM1=0XF3;//PCAÄ£¿éPWM¼Ä´æÆ&pide;1//08½Ó¿ÚLEDµ¥Ôª°åÒý½Å¶¨Òåsbit A_LED=P0^0;sbit B_LED=P0^1;sbit C_LED=P0^2;sbit D_LED=P0^3;sbit CLK_LED=P0^4;//ÒÆλʱÖÓsbit STB_LED=P0^5;//Ëø´æʱÖÓsbit R1_LED=P2^0;//ÉÏ°ëÆÁÄ»ºìÉ«Êý¾Ý 1¿ªÏÔʾ 0¹ØÏÔʾsbit R2_LED=P2^1;//Ï°ëÆÁÄ»ºìÉ«Êý¾Ý sbit G1_LED=P2^2;//ÉÏ°ëÆÁÄ»ÂÌÉ«Êý¾Ý 1¿ªÏÔʾ 0¹ØÏÔʾsbit G2_LED=P2^3;//Ï°ëÆÁÄ»ÂÌÉ«Êý¾Ý sbit B1_LED=P2^4;//ÉÏ°ëÆÁÄ»À¶É«Êý¾Ý 1¿ªÏÔʾ 0¹ØÏÔʾsbit B2_LED=P2^5;//Ï°ëÆÁÄ»À¶É«Êý¾Ýsbit OE_LED=P1^3;//OE=1¹Ø±ÕÏÔʾ OE=0¿ªÏÔʾ ²ÉÓÃPWM·½Ê½¿ÉʵÏÖÁÁ¶Èµ&pide;½Ú//ʵÑéÊý×éu8 zifu[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};//16*64u8 code pic[16][8]=  //C:UsersshuoDesktop??1.bmp(0){{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},{0x00,0x02,0x01,0x82,0x20,0x22,0x00,0x1C},{0x3F,0xE1,0x6E,0x02,0x20,0x22,0x03,0xE0},{0x10,0x40,0x22,0x1F,0xFC,0x2F,0xC2,0x00},{0x08,0x80,0x22,0x02,0x20,0xB2,0x42,0x20},{0x07,0x03,0x4B,0x80,0x00,0xA2,0x42,0x20},{0x18,0xC1,0x4A,0x1F,0xF8,0xA2,0x43,0xFE},{0x62,0x31,0x6A,0x01,0x08,0xBF,0xE0,0x20},{0x02,0x01,0x2A,0x01,0x08,0x22,0x01,0x24},{0x1F,0xC1,0x2F,0x81,0x08,0x25,0x01,0x22},{0x02,0x01,0xA0,0x01,0x18,0x25,0x02,0x21},{0x02,0x01,0x40,0x01,0x00,0x28,0x84,0x21},{0x7F,0xF0,0xBF,0x81,0x00,0x30,0x60,0xE0},{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},};//ÐÐɨÃèvoid Choose_Hang(u8 i){switch(i){case 0: D_LED=0; C_LED=0; B_LED=0; A_LED=0; break;case 1: D_LED=0; C_LED=0; B_LED=0; A_LED=1; break;case 2: D_LED=0; C_LED=0; B_LED=1; A_LED=0; break;case 3: D_LED=0; C_LED=0; B_LED=1; A_LED=1; break;case 4: D_LED=0; C_LED=1; B_LED=0; A_LED=0; break;case 5: D_LED=0; C_LED=1; B_LED=0; A_LED=1; break;case 6: D_LED=0; C_LED=1; B_LED=1; A_LED=0; break;case 7: D_LED=0; C_LED=1; B_LED=1; A_LED=1; break;case 8: D_LED=1; C_LED=0; B_LED=0; A_LED=0; break;case 9: D_LED=1; C_LED=0; B_LED=0; A_LED=1; break;case 10: D_LED=1; C_LED=0; B_LED=1; A_LED=0; break;case 11: D_LED=1; C_LED=0; B_LED=1; A_LED=1; break;case 12: D_LED=1; C_LED=1; B_LED=0; A_LED=0; break;case 13: D_LED=1; C_LED=1; B_LED=0; A_LED=1; break;case 14: D_LED=1; C_LED=1; B_LED=1; A_LED=0; break;case 15: D_LED=1; C_LED=1; B_LED=1; A_LED=1; break;default:break;}}/*ºì ÂÌ À¶ Èç¹ûÖ»ÏÔʾºìÉ«Ö»Ðè°ÑÂÌÉ«ºÍÀ¶É«µÄֵд0¼È¿ÉÒԹرÕÂÌÉ«ºÍÀ¶É«ÏÔʾ£¬Ê¹ÆäÖ»ÏÔʾºìÉ«ÏÔʾʲôÑÕÉ«¾Í×¢Ê͵ôʲôÑÕÉ«¾Í¿ÉÒÔÁË*///ºìÉ«È«ÆÁÄ»void Red_Send_595(u8 dat){             u8 j,i;for(j=0;j<16;j++){if(j==16) j=0;for(i=0; i<8; i++){dat <<= 1;  //ÉèÖÃÏÔʾµÄÑÕÉ«//R1_LED=CY;//R2_LED=CY;G1_LED=CY;G2_LED=CY;B1_LED=CY;B2_LED=CY;  //ÒÆλʱÖÓ ÕýÌø±äÏÂÒƶ¯CLK_LED=1;CLK_LED=0;}STB_LED=1;STB_LED=0;Choose_Hang(j);}}//ÂÌÉ«È«ÆÁÄ»void Green_Send_595(u8 dat){             u8 j,i;for(j=0;j<16;j++){if(j==16) j=0;for(i=0; i<8; i++){dat <<= 1;R1_LED=CY;R2_LED=CY;//G1_LED=CY;//G2_LED=CY;B1_LED=CY;B2_LED=CY;CLK_LED=1;CLK_LED=0;}STB_LED=1;STB_LED=0;Choose_Hang(j);}}//À¶É«È«ÆÁÄ»void Blue_Send_595(u8 dat){             u8 j,i;for(j=0;j<16;j++){for(i=0; i<8; i++){dat <<= 1;R1_LED=CY;R2_LED=CY;G1_LED=CY;G2_LED=CY;//B1_LED=CY;//B2_LED=CY;CLK_LED=1;//ÉÏÉýÑØ·¢ÉúÒÆλCLK_LED=0;}STB_LED=1;//ÉÏÉýÑؽ«Êý¾ÝË͵½Êä³ö¼Ä´æÆ&pide;STB_LED=0;//Ëø´æÏÔʾÊý¾ÝChoose_Hang(j);}}//ÉÏ°ëÆÁÄ»ÏÔʾ//ÏÔʾһ¸ö×Ö½Ú ·¢ËÍÒ»¸ö×Ö½Ú ²¢ Ëø´æÒ»¸ö×Ö½ÚÊý¾Ý//1ÏÔʾ°×É«  0²»ÏÔʾvoid Byte_Send_595_Up(u8 dat){             u8 i;for(i=0; i<8; i++){dat <<= 1;R1_LED=0;R2_LED=0;//¹Ø±ÕÏ°ëÆÁÄ»ÏÔʾG1_LED=0;G2_LED=0;//¹Ø±ÕÏ°ëÆÁÄ»ÏÔʾB1_LED=CY;B2_LED=0;//¹Ø±ÕÏ°ëÆÁÄ»ÏÔʾCLK_LED=1;  _nop_();  _nop_();CLK_LED=0;}}//void Byte_Send_595_Down(u8 dat){             u8 i;for(i=0; i<8; i++){dat <<= 1;R1_LED=0;R2_LED=0;//¹Ø±ÕÏ°ëÆÁÄ»ÏÔʾG1_LED=0;G2_LED=CY;//¹Ø±ÕÏ°ëÆÁÄ»ÏÔʾB1_LED=0;B2_LED=0;//¹Ø±ÕÏ°ëÆÁÄ»ÏÔʾCLK_LED=1;  _nop_();  _nop_();CLK_LED=0;}}//ʹÓÃÓ²¼þPWM0void PCA_PWM0_Init(void){CCON=0;//³õʼ»¯PCA¼Ä´æÆ&pide; Çå³þ²¢¸´Î»CL=0;//PCA¼ÆÊýÆ&pide;µÍλ¸´Î»CH=0;//PCA¼ÆÊýÆ&pide;¸ßλ¸´Î»CMOD=0X02;//PCA/PWMµÄʱÖÓÔ´ÊÇSYS£¬²»Óö¨Ê±Æ&pide;0£¬PWMµÄʱÖÓÔ´2·ÖƵ  CCAP0L=CCAP0H=0X40;CCAPM0=0X42;//8λPWM ÎÞÖжÏCR=1;}////ÉÏ°ëÆÁÄ»////»­µãº¯Êý////yÁÐ n=1ÏÔʾ n=0²»ÏÔʾ//void Draw_Point_Led(y)//{//u8 k,m,z,temp;//  k=y/8;//Ëã³öµÚ¼¸¸ö×Ö½Ú//temp=zifu[k];//m=y%8;//×ֽڵĵڼ¸Î»//zifu[k]=((temp|0x80)>>m);//for(z=0;z<8;z++)//Byte_Send_595(zifu[z]);//STB_LED=0;//STB_LED=1;////Choose_Hang(x);//}//»­16*32ͼƬ ÉÏ°ëÆÁÄ»void Draw_Pic_Up(){u8 i,j,k;for(k=0;k<16;k++){for(i=0;i<16;i++){for(j=0;j<8;j++){Byte_Send_595_Up(pic[i][j]);}OE_LED=1;STB_LED=1;Choose_Hang(i);STB_LED=0;OE_LED=0;}}}void Draw_Pic_Down(){u8 i,j,k;for(k=0;k<16;k++){for(i=0;i<16;i++){for(j=0;j<8;j++){Byte_Send_595_Down(pic[i][j]);}OE_LED=1;STB_LED=1;Choose_Hang(i);STB_LED=0;OE_LED=0;}}}void main(){P0M0=0XFF; P0M1=0X00;//P0¿ÚÍÆÍêÊä³öP1M0=0XFF; P1M1=0X00;//P1¿ÚÍÆÍêÊä³öP2M0=0XFF; P2M1=0X00;//P2¿ÚÍÆÍêÊä³ö//PCA_PWM0_Init();while(1) {Draw_Pic_Up();}}

效果图：