MAX7219 驱动 8X8点阵 没库 arduino 直接驱动。

guangliang825

  MAX7219 驱动 8X8点阵  没库 arduino 直接驱动显示0~9，a~z，中，国。
[pre lang="arduino" line="1" file="8X8点阵"]

int clk =3;
int cs=4;
int din=5;
unsigned char disp1[38][8]={
{0x3C,0x42,0x42,0x42,0x42,0x42,0x42,0x3C},//0
{0x10,0x18,0x14,0x10,0x10,0x10,0x10,0x10},//1
{0x7E,0x2,0x2,0x7E,0x40,0x40,0x40,0x7E},//2
{0x3E,0x2,0x2,0x3E,0x2,0x2,0x3E,0x0},//3
{0x8,0x18,0x28,0x48,0xFE,0x8,0x8,0x8},//4
{0x3C,0x20,0x20,0x3C,0x4,0x4,0x3C,0x0},//5
{0x3C,0x20,0x20,0x3C,0x24,0x24,0x3C,0x0},//6
{0x3E,0x22,0x4,0x8,0x8,0x8,0x8,0x8},//7
{0x0,0x3E,0x22,0x22,0x3E,0x22,0x22,0x3E},//8
{0x3E,0x22,0x22,0x3E,0x2,0x2,0x2,0x3E},//9
{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
{0x8,0x7F,0x49,0x49,0x7F,0x8,0x8,0x8},//中
{0xFE,0xBA,0x92,0xBA,0x92,0x9A,0xBA,0xFE},//国
};

void setup(){
  pinMode(cs,OUTPUT);
  pinMode(clk,OUTPUT);
  pinMode(din,OUTPUT);
  Init_MAX7219();
}
void loop(){
  char i,j;
//Write_Max7219(0x0f, 0x00);
//Delay_xms(500);

  for(j=0;j<37;j++)
  {
   for(i=1;i<9;i++)
    Write_Max7219(i,disp1[j][i-1]);
   delay(1000);
  }
  
}

void Write_Max7219_byte(char DATA)         
{
            char i;   
                digitalWrite(cs,0);               
            for(i=8;i>=1;i--)
          {                  
           digitalWrite(clk,0);
            if((DATA&0x80)>0){digitalWrite(din,1);}
            else{digitalWrite(din,0);}
            //提取最高位给DIN端口
            DATA=DATA<<1;//左移一位
            digitalWrite(clk,1);
           }                                 
}
void Write_Max7219(char address,char dat)
{
         digitalWrite(cs,0);
         Write_Max7219_byte(address);           //写入地址，即数码管编号
     Write_Max7219_byte(dat);               //写入数据，即数码管显示数字
         digitalWrite(cs,1);                        
}
void Init_MAX7219(void)
{
Write_Max7219(0x09, 0x00);//译码方式：BCD码
Write_Max7219(0x0a, 0x01);//亮度
Write_Max7219(0x0b, 0x07); //扫描界限；8个数码管显示
Write_Max7219(0x0c, 0x01);  //掉电模式：0，普通模式：1
Write_Max7219(0x0f, 0x00);
delay(500); //显示测试：1；测试结束，正常显示：0
}[/code]

chaqing

沙发占领，支持一下！！

wilson16

16x16的要怎样呢？请高手请教 。

eee987

好像少显示一个国字

guangliang825

wilson16 发表于 2013-12-7 16:11
16x16的要怎样呢？请高手请教 。

用16x16软件生成16进制代码，程序改成  for(j=0;j<（根据你要显示的字数填写数字）;j++)
  {
   for(i=1;i<17;i++)
    Write_Max7219(i,disp1[j][i-1]);
   delay(1000);

guangliang825

eee987 发表于 2014-3-3 22:06
好像少显示一个国字

  for(j=0;j<38;j++)
  {
   for(i=1;i<9;i++)
    Write_Max7219(i,disp1[j][i-1]);
   delay(1000);
主循环里 这段改成上边那样就好。

雪儿

GOOD,非常感谢，就这个能用

布列松

亮度怎样调，赶脚太亮了。