【Arduino進階教學課程】MAX7219驅動點陣模組LED Matrix動畫顯示

2023-02-22
發佈由管理員

28 12 月

實驗說明:

MAX7219 8X8點矩陣顯示模組是已經整合MAX7219 IC 與Led Matrix點矩陣顯示面板，在Arduino使用上真的非常方便，不用接一堆線和電阻，還有現成的函式庫可用，程式好寫，輕鬆簡單就能顯示出各種文字、圖型，甚至是動畫。本範例將介紹MAX7219 與Arduino的使用方式。

▼購買MAX7219 8X8點矩陣顯示模組：

MAX7219 8X8點矩陣顯示 LED模組

材料:

Arduino Uno R3
USB 傳輸線
MAX7219 點矩陣顯示模組
杜邦線

安裝 LedControl 程式庫

在 Arduino 整合環境功能表點選草稿碼 / 匯入程式庫 / 管理程式庫
在右上方搜尋框輸入「LedControl」，下方會列出所有符合條件的程式庫，不同程式庫使用的程式碼並不相同。此處點選「LedControl」，該項目右下角會出現「安裝」鈕，按「安裝」鈕開始安裝。

程式：

#include <LedControl.h> 

int DIN = 12;
int CS =  11;
int CLK = 10;

byte m[8]=     {0xE7,0xFF,0xFF,0xDB,0xDB,0xDB,0xC3,0xC3};  //英文字母m
byte i[8]=     {0x00,0x10,0x00,0x10,0x10,0x10,0x10,0x10};  //英文字母i
byte r[8]=     {0x00,0x00,0x2c,0x32,0x20,0x20,0x20,0x20};  //英文字母r
byte o[8]=     {0x00,0x00,0x1c,0x22,0x22,0x22,0x22,0x1c};  //英文字母o
byte t[8]=     {0x00,0x00,0x10,0x7e,0x10,0x10,0x14,0x18};  //英文字母t
byte e[8]=     {0x00,0x3c,0x42,0x42,0x7e,0x40,0x40,0x3e};  //英文字母e
byte k[8]=     {0x00,0x20,0x20,0x24,0x28,0x30,0x28,0x24};  //英文字母k

byte smile[8]=   {0x3C,0x42,0xA5,0x81,0xA5,0x99,0x42,0x3C};  //微笑
byte love_1[8]=   {0x00,0x66,0x99,0x81,0x42,0x24,0x18,0x00}; //愛心-1
byte love_2[8]=   {0x00,0x66,0xff,0xff,0x7e,0x3c,0x18,0x00}; //愛心-2

byte Front[8]=   {0x08,0x1c,0x3e,0x7f,0x1c,0x1c,0x1c,0x1c};   //前
byte back[8]=    {0x1c,0x1c,0x1c,0x1c,0x7f,0x3e,0x1c,0x08};   //後
byte left[8]=    {0x10,0x30,0x7f,0xff,0x7f,0x30,0x10,0x00};   //左
byte right[8]=   {0x08,0x0c,0xfe,0xff,0xfe,0x0c,0x08,0x00};   //右

LedControl lc=LedControl(DIN,CLK,CS,0);

void setup(){
 lc.shutdown(0,false);       //The MAX72XX is in power-saving mode on startup
 lc.setIntensity(0,15);      // Set the brightness to maximum value
 lc.clearDisplay(0);         // and clear the display
}

void loop(){ 

    printByte(smile);
    delay(1000);

    printByte(love_1);    
    delay(1000);

    printByte(love_2);    
    delay(1000);

    printByte(Front);    
    delay(1000);

    printByte(back);    
    delay(1000);

    printByte(left);    
    delay(1000);

    printByte(right);    
    delay(1000);
    
    printLetter();
    
   
    lc.clearDisplay(0);
    
    delay(1000);
}

void printLetter()
{
  printByte(m);
  delay(1000);
  printByte(i);
  delay(1000);
  printByte(r);
  delay(1000);
  printByte(o);
  delay(1000);
  printByte(t);
  delay(1000);
  printByte(e);
  delay(1000);
  printByte(k);
  delay(1000);
}

void printByte(byte character [])
{
  int i = 0;
  for(i=0;i<8;i++)
  {
    lc.setRow(0,i,character[i]);
  }
}