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Arduino Matrix LED
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| unsigned char i; | |
| unsigned char j; | |
| /*Port Definitions*/ | |
| int Max7219_pinCLK = 10; | |
| int Max7219_pinCS = 9; | |
| int Max7219_pinDIN = 8; | |
| unsigned char disp1[38][8]={ | |
| {0x8,0x14,0x22,0x3E,0x22,0x22,0x22,0x22},//A | |
| {0x3C,0x22,0x22,0x3E,0x22,0x22,0x3C,0x0},//B | |
| {0x3C,0x40,0x40,0x40,0x40,0x40,0x3C,0x0},//C | |
| {0x7C,0x42,0x42,0x42,0x42,0x42,0x7C,0x0},//D | |
| {0x7C,0x40,0x40,0x7C,0x40,0x40,0x40,0x7C},//E | |
| {0x7C,0x40,0x40,0x7C,0x40,0x40,0x40,0x40},//F | |
| {0x3C,0x40,0x40,0x40,0x40,0x44,0x44,0x3C},//G | |
| {0x44,0x44,0x44,0x7C,0x44,0x44,0x44,0x44},//H | |
| {0x7C,0x10,0x10,0x10,0x10,0x10,0x10,0x7C},//I | |
| {0x3C,0x8,0x8,0x8,0x8,0x8,0x48,0x30},//J | |
| {0x0,0x24,0x28,0x30,0x20,0x30,0x28,0x24},//K | |
| {0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x7C},//L | |
| {0x81,0xC3,0xA5,0x99,0x81,0x81,0x81,0x81},//M | |
| {0x0,0x42,0x62,0x52,0x4A,0x46,0x42,0x0},//N | |
| {0x3C,0x42,0x42,0x42,0x42,0x42,0x42,0x3C},//O | |
| {0x3C,0x22,0x22,0x22,0x3C,0x20,0x20,0x20},//P | |
| {0x1C,0x22,0x22,0x22,0x22,0x26,0x22,0x1D},//Q | |
| {0x3C,0x22,0x22,0x22,0x3C,0x24,0x22,0x21},//R | |
| {0x0,0x1E,0x20,0x20,0x3E,0x2,0x2,0x3C},//S | |
| {0x0,0x3E,0x8,0x8,0x8,0x8,0x8,0x8},//T | |
| {0x42,0x42,0x42,0x42,0x42,0x42,0x22,0x1C},//U | |
| {0x42,0x42,0x42,0x42,0x42,0x42,0x24,0x18},//V | |
| {0x0,0x49,0x49,0x49,0x49,0x2A,0x1C,0x0},//W | |
| {0x0,0x41,0x22,0x14,0x8,0x14,0x22,0x41},//X | |
| {0x41,0x22,0x14,0x8,0x8,0x8,0x8,0x8},//Y | |
| {0x0,0x7F,0x2,0x4,0x8,0x10,0x20,0x7F},//Z | |
| }; | |
| void Write_Max7219_byte(unsigned char DATA) | |
| { | |
| unsigned char i; | |
| digitalWrite(Max7219_pinCS,LOW); | |
| for(i=8;i>=1;i--) | |
| { | |
| digitalWrite(Max7219_pinCLK,LOW); | |
| digitalWrite(Max7219_pinDIN,DATA&0x80);// Extracting a bit data | |
| DATA = DATA<<1; | |
| digitalWrite(Max7219_pinCLK,HIGH); | |
| } | |
| } | |
| void Write_Max7219(unsigned char address,unsigned char dat) | |
| { | |
| digitalWrite(Max7219_pinCS,LOW); | |
| Write_Max7219_byte(address); //address，code of LED | |
| Write_Max7219_byte(dat); //data，figure on LED | |
| digitalWrite(Max7219_pinCS,HIGH); | |
| } | |
| void Init_MAX7219(void) | |
| { | |
| Write_Max7219(0x09, 0x00); //decoding ：BCD | |
| Write_Max7219(0x0a, 0x03); //brightness | |
| Write_Max7219(0x0b, 0x07); //scanlimit；8 LEDs | |
| Write_Max7219(0x0c, 0x01); //power-down mode：0，normal mode：1 | |
| Write_Max7219(0x0f, 0x00); //test display：1；EOT，display：0 | |
| } | |
| void setup() | |
| { | |
| pinMode(Max7219_pinCLK,OUTPUT); | |
| pinMode(Max7219_pinCS,OUTPUT); | |
| pinMode(Max7219_pinDIN,OUTPUT); | |
| delay(50); | |
| Init_MAX7219(); | |
| } | |
| void loop() | |
| { | |
| char words[] = "HTWUK"; | |
| int thischar; | |
| for(j=0;j<strlen(words);j++) | |
| { | |
| thischar=int(words[j])-65; | |
| for(i=1;i<9;i++) | |
| //Write_Max7219(i,disp1[j][i-1]); | |
| Write_Max7219(i,disp1[thischar][i-1]); | |
| delay(1000); | |
| } | |
| } |
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