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LED搖搖棒電路圖及源程序代碼

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ID:81203 發表于 2015-5-26 19:27 | 只看該作者 回帖獎勵 |倒序瀏覽 |閱讀模式
程序名稱:LED搖搖棒顯示64*16像素
簡要說明:外部中斷方式INT0顯示;取模方式:縱向取模、字節倒序

最后更新:08/11/15晚
**********************************************************/
#include <AT89X52.h>
#define uchar unsigned char
#define uint unsigned int    //宏定義
#define KEY P3_0      //定義畫面切換按鍵
uchar KY;      //KY作用在后面說明     
uchar disp;     //顯示漢字指針
uchar pic=0,num=0;     //pic為按鍵次數;num為中斷次數
uchar code love[] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFE,0x3F,0x00,0x20,0x00,0x20,0x00,0x20,
0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0xF8,0x0F,
0x04,0x10,0x02,0x20,0x02,0x20,0x02,0x20,0x02,0x20,0x04,0x10,0xF8,0x0F,0x00,0x00,
0x00,0x00,0x00,0x00,0xFE,0x07,0x00,0x08,0x00,0x10,0x00,0x20,0x00,0x20,0x00,0x10,
0x00,0x08,0xFE,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0xFE,0x3F,0x82,0x20,0x82,0x20,
0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*LOVE*/
};
uchar code loveyou[] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x78,0x00,0xFC,0x00,0xFE,0x01,0xFE,0x03,0xFE,0x07,0xFE,0x0F,0xFE,0x1F,0xFC,0x3F,
0xF8,0x7F,0xFC,0x3F,0xFE,0x1F,0xFE,0x0F,0xFE,0x07,0xFE,0x03,0xFE,0x01,0xFC,0x00,
0x78,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*心形圖案*/
};
uchar code hehe[] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x01,0x40,0x01,0xC0,0x01,0x00,0x00,0x00,0x00,
0xF0,0x0F,0x08,0x10,0x04,0x20,0x00,0x00,0x00,0x00,0xF0,0x3F,0x08,0x00,0x04,0x00,
0x04,0x00,0x04,0x00,0x08,0x00,0xF0,0x3F,0x00,0x00,0x00,0x00,0x00,0x20,0x00,0x20,
0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x00,0x00,0x00,0xF0,0x3F,0x08,0x00,0x04,0x00,
0x04,0x00,0x04,0x00,0x08,0x00,0xF0,0x3F,0x00,0x00,0x00,0x00,0x04,0x20,0x08,0x10,
0xF0,0x0F,0x00,0x00,0x00,0x00,0xC0,0x01,0x40,0x01,0xC0,0x01,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*呵呵o(∩_∩)o圖案*/
};
unsigned char code hanzi[] = {
//-- 歡 --
      0x04,0x10,0x34,0x08,0xC4,0x06,0x04,0x01,
       0xC4,0x82,0x3C,0x8C,0x20,0x40,0x10,0x30,
       0x0F,0x0C,0xE8,0x03,0x08,0x0C,0x08,0x10,
       0x28,0x60,0x18,0xC0,0x00,0x40,0x00,0x00,
//-- 迎 --
      0x40,0x00,0x42,0x40,0x44,0x20,0xC8,0x1F,
       0x00,0x20,0xFC,0x47,0x04,0x42,0x02,0x41,
       0x82,0x40,0xFC,0x7F,0x04,0x40,0x04,0x42,
       0x04,0x44,0xFE,0x63,0x04,0x20,0x00,0x00,
//-- 使 --
      0x40,0x00,0x20,0x00,0xF8,0xFF,0x07,0x00,
       0x04,0x80,0xF4,0x43,0x14,0x45,0x14,0x29,
       0x14,0x19,0xFF,0x17,0x14,0x21,0x14,0x21,
       0x14,0x41,0xF6,0xC3,0x04,0x40,0x00,0x00,
//-- 用 --
      0x00,0x80,0x00,0x60,0xFE,0x1F,0x22,0x02,
       0x22,0x02,0x22,0x02,0x22,0x02,0xFE,0x7F,
       0x22,0x02,0x22,0x02,0x22,0x42,0x22,0x82,
       0xFF,0x7F,0x02,0x00,0x00,0x00,0x00,0x00,
//-- 神 --
      0x08,0x01,0x88,0x00,0x49,0x00,0xEE,0xFF,
       0x58,0x00,0x88,0x00,0x00,0x00,0xF8,0x1F,
       0x88,0x08,0x88,0x08,0xFF,0xFF,0x88,0x08,
       0x88,0x08,0xFC,0x1F,0x08,0x00,0x00,0x00,
//-- 奇 --
      0x40,0x00,0x40,0x00,0x44,0x00,0x44,0x3E,
       0x64,0x12,0x54,0x12,0x4C,0x12,0x47,0x12,
       0x4C,0x3F,0x54,0x42,0x74,0x80,0xC6,0x7F,
       0x44,0x00,0x60,0x00,0x40,0x00,0x00,0x00,
//-- 魔 --
      0x00,0x40,0x00,0x30,0xFE,0x8F,0x4A,0x80,
       0xAA,0x5F,0x9A,0x4A,0xFE,0x2A,0xAA,0x1A,
       0xCB,0x0F,0xAA,0x7A,0xFE,0x8A,0x9A,0xAA,
       0xAA,0x8F,0x6B,0x80,0x22,0xE0,0x00,0x00,
//-- 幻 --
      0x80,0x20,0xC0,0x30,0xA0,0x28,0x98,0x24,
       0x87,0x22,0x80,0x21,0xC4,0x30,0x04,0x60,
       0x04,0x00,0x04,0x20,0x04,0x40,0x04,0x80,
       0x04,0x40,0xFE,0x3F,0x04,0x00,0x00,0x00,
//-- 搖 --
      0x10,0x02,0x10,0x42,0x10,0x81,0xFF,0x7F,
       0x90,0x04,0x54,0x05,0xCC,0xF4,0xB4,0x44,
       0x84,0x44,0xBC,0x7F,0x82,0x44,0xA2,0x44,
       0x9B,0xF4,0x82,0x06,0x00,0x04,0x00,0x00,
//-- 搖 --
      0x10,0x02,0x10,0x42,0x10,0x81,0xFF,0x7F,
       0x90,0x04,0x54,0x05,0xCC,0xF4,0xB4,0x44,
       0x84,0x44,0xBC,0x7F,0x82,0x44,0xA2,0x44,
       0x9B,0xF4,0x82,0x06,0x00,0x04,0x00,0x00,
//-- 棒 --
      0x10,0x04,0x10,0x03,0xD0,0x00,0xFF,0xFF,
       0x90,0x00,0x54,0x05,0x44,0x12,0xD4,0x15,
       0x74,0x14,0x5F,0xFF,0xD4,0x14,0x54,0x15,
       0x56,0x12,0x44,0x06,0x40,0x02,0x00,0x00,
//-- ! --
      0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
       0x00,0x00,0x00,0x00,0x7C,0x10,0xFE,0x3B,
       0xFE,0x3B,0x7C,0x10,0x00,0x00,0x00,0x00,
       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
};
/*****函數聲明*****/
void display1(void);
void display2(void);
void display3(void);
void display4(void);
/*****n(us)延時子程序*****/
void DelayUs(uint N)
{
uint x;
for(x=0; x<=N;x++);
}
/*****中斷服務程序*****/
void intersvr0(void) interrupt 0 using 1
{
KY=~KY;      //每個搖動來回水銀開關會在擺幅兩端分別產生下降沿中斷,只提取其中一次(從左向右搖才顯示)
if(KY==0)
{
   num++;     //計算中斷次數
  switch(pic)      //選擇畫面
  {
    case 0:{display1();}break;
    case 1:{display2();}break;
    case 2:{display3();}break;
    case 3:{display4();}break;
    default:{display1();}  
   }
     }
}
/*****顯示子程序1(漢字)*****/
void display1(void)
{
uchar i;
if(num>10){disp++;num=0;}     //12個漢字分為3次顯示完(每次顯示4個),每中斷10次切換
if(disp>2)disp=0;
   DelayUs(5200);     //此處延時時間依各硬件差別而各不相同,試著調整使得顯示內容居中即可
for(i=0;i<64;i++)
{
      P0=~hanzi[disp*128+i*2];
      P2=~hanzi[disp*128+i*2+1];
      DelayUs(100);
}
}
/*****顯示子程序2(LOVE)*****/
void display2(void)
{
uchar i;
DelayUs(4000);
for(i=0;i<64;i++)
{
      P0=~love[i*2];
      P2=~love[i*2+1];
      DelayUs(120);
}
}
/*****顯示子程序3(心形圖案)*****/
void display3(void)
{
uchar i;
   DelayUs(4000);
for(i=0;i<64;i++)
{
      P0=~loveyou[i*2];
      P2=~loveyou[i*2+1];
      DelayUs(120);
}
}
/*****顯示子程序4(呵呵o(∩_∩)o圖案)*****/
void display4(void)
{
uchar i;
DelayUs(4000);
for(i=0;i<64;i++)
{
      P0=~hehe[i*2];
      P2=~hehe[i*2+1];
      DelayUs(120);
}
}
/*****主函數*****/
void main(void)
{
IT0=1;
EX0=1;
EA=1;      //開中斷,下降沿中斷
KY=0;
while(1)     //主程序中只檢測按鍵
{
   if(KEY==0)     //畫面切換鍵按下
  {
   DelayUs(10000);     //按鍵去抖
  if(KEY==0);
   pic++;}
   if(pic>3)pic=0;
}
}
/*****END*****/

基本原理與硬件電路設計:
        16只LED發光管作為畫面每一列的顯示,左右搖晃起到了掃描的作用,人眼的視覺暫留現象使得看到的是一幅完整的畫面。與LED點陣的顯示有幾分相仿。
        硬件電路如下圖(點擊可放大)。系統電源VCC為5V,下載程序和調試時一定要保證5V電壓,實際使用時用3節干電池串聯4.5V即可。AT89S52單片機作為控制器,在它的P0、P2口接有16只以共陽的方式連接的高亮度LED,由單片機輸出低電平點亮。P0口的上拉電阻RA1不能少。串在LED公共端的二極管D1會產生一定的壓降,用來保護LED,經實測LED點亮時兩端電壓為3V左右,在LED的安全承受范圍內。K1是畫面切換開關,用于切換顯示不同內容;S1為水銀開關。
水銀開關的作用:棒在搖動時,只能在朝某一方向搖動時顯示,否則會出現鏡像字或鏡像畫面,所以通過接一只水銀開關來控制,使搖搖棒從左向右搖動時將內容顯示出來。
使用的是直徑5mm的紅色高亮LED,感覺太大了些,遠看效果很好但近看時字不夠連貫。建議使用直徑為3mm的高亮LED,顏色可根據個人喜好選擇。
水銀開關里的水銀珠很活躍,導致在接通時容易產生抖動,所以將水銀開關斜向上放置(尖尖朝斜上方45°角),靠水銀珠自身重力的作用減少抖動。





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