Proteus模拟Arduino控制LED矩阵显示屏测试程序 -

标题: Proteus模拟Arduino控制LED矩阵显示屏测试程序 [打印本页]

作者: backup2k 时间: 2020-4-7 22:35
标题: Proteus模拟Arduino控制LED矩阵显示屏测试程序
// Arduino 328 用16行*32列 LED矩阵显示屏基础测试程序,主频是32MHz，在主菜单Project->工程设置中修改
// 项目格式 Proteus V8.9 SP2版本，测试如图所示。

// 源代码如下。
int A = 8;
int B = 9;
int C = 10;
int D = 11;
int DE = 12;
int LATCH = 2; //锁存信号 Latch
int SCLK = 3; //时钟信号 Shift Clock
int R0 = 4; //数据输入 ,Data Shift in
char datain=0x0F;
int refreshtime=500;
int i=0,LineNum=0; // 临时循环变量
#define NumOf74HC595  3// 从0开始查数，实际上是4个，0也算一个。

unsigned char zimo[][32]={
{0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x3F,0xF8,0x21,0x08,0x21,0x08,0x21,0x08,0x21,0x08,0x21,0x08,0x3F,0xF8,0x21,0x08,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00},/*"中",0*/
/* (16 X 16 , 宋体 )*/

{0x00,0x00,0x7F,0xFC,0x40,0x04,0x40,0x04,0x5F,0xF4,0x41,0x04,0x41,0x04,0x4F,0xE4,0x41,0x04,0x41,0x44,0x41,0x24,0x5F,0xF4,0x40,0x04,0x40,0x04,0x7F,0xFC,0x40,0x04},/*"国",1*/
/* (16 X 16 , 宋体 )*/

{0x10,0x00,0x10,0x00,0x10,0x00,0x10,0x7C,0xFE,0x44,0x12,0x44,0x12,0x44,0x12,0x44,0x12,0x44,0x12,0x44,0x12,0x44,0x12,0x44,0x22,0x44,0x22,0x7C,0x4A,0x44,0x84,0x00},/*"加",2*/
/* (16 X 16 , 宋体 )*/

{0x00,0x40,0x20,0x40,0x10,0x40,0x10,0x40,0x87,0xFC,0x44,0x44,0x44,0x44,0x14,0x44,0x14,0x44,0x27,0xFC,0xE4,0x44,0x24,0x44,0x24,0x44,0x24,0x44,0x27,0xFC,0x04,0x04},/*"油",3*/
/* (16 X 16 , 宋体 )*/

};

unsigned char DisplayBuffer[16][4]={};  // 16行*32(4*8bit)列的显示缓冲区，与LED点阵屏一一对应，要显示什么内容，先把内容复制到这个缓冲区中即可。

void setup() {
  pinMode(LATCH, OUTPUT);
  pinMode(SCLK, OUTPUT);
  pinMode(R0, OUTPUT);
  pinMode(A, OUTPUT);
  pinMode(B, OUTPUT);
  pinMode(C, OUTPUT);
  pinMode(D, OUTPUT);
  pinMode(DE, OUTPUT);

  DDRB=0xFF;  // 8 pin output

  digitalWrite(DE, HIGH); // 关闭138的输出，显示屏不会亮
// 填充显示缓冲区
  for(LineNum=0;LineNum<16;LineNum++)
  {
   DisplayBuffer[LineNum][NumOf74HC595]=zimo[2][LineNum*2];
   DisplayBuffer[LineNum][NumOf74HC595-1]=zimo[2][LineNum*2+1];

   DisplayBuffer[LineNum][NumOf74HC595-2]=zimo[3][LineNum*2];
   DisplayBuffer[LineNum][NumOf74HC595-3]=zimo[3][LineNum*2+1];
  }

}

void loop() {

for(LineNum=0;LineNum<16;LineNum++)
{
digitalWrite(DE, HIGH); // 关闭138的输出,防止显示串行
PORTB=0xF0 | LineNum; // 选择第LineNum行
for (i = 0; i <= NumOf74HC595; i++)
{  // 本电路图中有4个595芯片，所以这里是4
   // 串行输出数据
   digitalWrite(LATCH, LOW);
   shiftOut(R0, SCLK, MSBFIRST, DisplayBuffer[LineNum][NumOf74HC595-i]);
   digitalWrite(LATCH, HIGH);
   }
   digitalWrite(DE, LOW); // 打开138的输出，点亮相应的行
   delayMicroseconds(refreshtime); // 每行数据的显示停留时间
  }
}

LEDMatrix1632_8_9.rar

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作者: gch1 时间: 2020-4-26 23:49
Arduino 328 主频是32MHz？

作者: backup2k 时间: 2022-1-26 07:43

gch1 发表于 2020-4-26 23:49
Arduino 328 主频是32MHz？

可以改，主频低的话，显示效果不好！

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