7.6 LED点阵的横向移动

时间：2025-03-07 12:11:14
  • #include <>
  • sbit ADDR0 = P1^0;
  • sbit ADDR1 = P1^1;
  • sbit ADDR2 = P1^2;
  • sbit ADDR3 = P1^3;
  • sbit ENLED = P1^4;
  • unsigned char code image[30][8] = {
  • {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}, //动画帧 1
  • {0xFF,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F}, //动画帧 2
  • {0xFF,0x3F,0x7F,0x7F,0x7F,0x7F,0x7F,0x3F}, //动画帧 3
  • {0xFF,0x1F,0x3F,0x3F,0x3F,0x3F,0x3F,0x1F}, //动画帧 4
  • {0xFF,0x0F,0x9F,0x9F,0x9F,0x9F,0x9F,0x0F}, //动画帧 5
  • {0xFF,0x87,0xCF,0xCF,0xCF,0xCF,0xCF,0x87}, //动画帧 6
  • {0xFF,0xC3,0xE7,0xE7,0xE7,0xE7,0xE7,0xC3}, //动画帧 7
  • {0xFF,0xE1,0x73,0x73,0x73,0xF3,0xF3,0xE1}, //动画帧 8
  • {0xFF,0x70,0x39,0x39,0x39,0x79,0xF9,0xF0}, //动画帧 9
  • {0xFF,0x38,0x1C,0x1C,0x1C,0x3C,0x7C,0xF8}, //动画帧 10
  • {0xFF,0x9C,0x0E,0x0E,0x0E,0x1E,0x3E,0x7C}, //动画帧 11
  • {0xFF,0xCE,0x07,0x07,0x07,0x0F,0x1F,0x3E}, //动画帧 12
  • {0xFF,0x67,0x03,0x03,0x03,0x07,0x0F,0x9F}, //动画帧 13
  • {0xFF,0x33,0x01,0x01,0x01,0x03,0x87,0xCF}, //动画帧 14
  • {0xFF,0x99,0x00,0x00,0x00,0x81,0xC3,0xE7}, //动画帧 15
  • {0xFF,0xCC,0x80,0x80,0x80,0xC0,0xE1,0xF3}, //动画帧 16
  • {0xFF,0xE6,0xC0,0xC0,0xC0,0xE0,0xF0,0xF9}, //动画帧 17
  • {0xFF,0x73,0x60,0x60,0x60,0x70,0x78,0xFC}, //动画帧 18
  • {0xFF,0x39,0x30,0x30,0x30,0x38,0x3C,0x7E}, //动画帧 19
  • {0xFF,0x9C,0x98,0x98,0x98,0x9C,0x1E,0x3F}, //动画帧 20
  • {0xFF,0xCE,0xCC,0xCC,0xCC,0xCE,0x0F,0x1F}, //动画帧 21
  • {0xFF,0x67,0x66,0x66,0x66,0x67,0x07,0x0F}, //动画帧 22
  • {0xFF,0x33,0x33,0x33,0x33,0x33,0x03,0x87}, //动画帧 23
  • {0xFF,0x99,0x99,0x99,0x99,0x99,0x81,0xC3}, //动画帧 24
  • {0xFF,0xCC,0xCC,0xCC,0xCC,0xCC,0xC0,0xE1}, //动画帧 25
  • {0xFF,0xE6,0xE6,0xE6,0xE6,0xE6,0xE0,0xF0}, //动画帧 26
  • {0xFF,0xF3,0xF3,0xF3,0xF3,0xF3,0xF0,0xF8}, //动画帧 27
  • {0xFF,0xF9,0xF9,0xF9,0xF9,0xF9,0xF8,0xFC}, //动画帧 28
  • {0xFF,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFE}, //动画帧 29
  • {0xFF,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFF} //动画帧 30
  • };
  • void main(){
  • EA = 1; //使能总中断
  • ENLED = 0; //使能 U4，选择 LED 点阵
  • ADDR3 = 0;
  • TMOD = 0x01; //设置 T0 为模式 1
  • TH0 = 0xFC; //为 T0 赋初值 0xFC67，定时 1ms
  • TL0 = 0x67;
  • ET0 = 1; //使能 T0 中断
  • TR0 = 1; //启动 T0
  • while (1);
  • }
  • /* 定时器 0 中断服务函数 */
  • void InterruptTimer0() interrupt 1{
  • static unsigned char i = 0; //动态扫描的索引
  • static unsigned char tmr = 0; //250ms 软件定时器
  • static unsigned char index = 0; //图片刷新索引
  • TH0 = 0xFC; //重新加载初值
  • TL0 = 0x67;
  • //以下代码完成 LED 点阵动态扫描刷新
  • P0 = 0xFF; //显示消隐
  • switch (i){
  • case 0: ADDR2=0; ADDR1=0; ADDR0=0; i++; P0=image[index][0]; break;
  • case 1: ADDR2=0; ADDR1=0; ADDR0=1; i++; P0=image[index][1]; break;
  • case 2: ADDR2=0; ADDR1=1; ADDR0=0; i++; P0=image[index][2]; break;
  • case 3: ADDR2=0; ADDR1=1; ADDR0=1; i++; P0=image[index][3]; break;
  • case 4: ADDR2=1; ADDR1=0; ADDR0=0; i++; P0=image[index][4]; break;
  • case 5: ADDR2=1; ADDR1=0; ADDR0=1; i++; P0=image[index][5]; break;
  • case 6: ADDR2=1; ADDR1=1; ADDR0=0; i++; P0=image[index][6]; break;
  • case 7: ADDR2=1; ADDR1=1; ADDR0=1; i=0; P0=image[index][7]; break;
  • default: break;
  • }
  • //以下代码完成每 250ms 改变一帧图像
  • tmr++;
  • if (tmr >= 250){ //达到 250ms 时改变一次图片索引
  • tmr = 0;
  • index++;
  • if (index >= 30){ //图片索引达到 30 后归零
  • index = 0;
  • }
  • }
  • }

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