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led屏幕亮起来

助工
2018-11-16 21:26:41     打赏

在推荐的店铺,杂七乱八的这个电买了100多块钱的东西,led最简单,让他亮起来再说。


图片.png

这三个最靠边,方便链接,都是C,就他们三个了,

初始化引脚

/*Configure GPIO pins : Din_Pin cs_Pin clk_Pin */
  GPIO_InitStruct.Pin = Din_Pin|cs_Pin|clk_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);


编写对8279写的函数

void Write_Max7219_byte(uchar DATA)         
{
        uchar i;    
        //Max7219_pinCS=0;    
        HAL_GPIO_WritePin(GPIOC, cs_Pin, GPIO_PIN_RESET);
        for(i=8;i>=1;i--)
          {          
     
            HAL_GPIO_WritePin(GPIOC,clk_Pin, GPIO_PIN_RESET);  
 
              if(DATA&0x80)
                  HAL_GPIO_WritePin(GPIOC, Din_Pin, GPIO_PIN_SET);  
              else
                  HAL_GPIO_WritePin(GPIOC, Din_Pin, GPIO_PIN_RESET);  
            DATA=DATA<<1;
            
 
            HAL_GPIO_WritePin(GPIOC, clk_Pin, GPIO_PIN_SET);
           }                                 
}


针对地址写函数

void Write_Max7219(uchar address,uchar dat)
{
 
     HAL_GPIO_WritePin(GPIOC, cs_Pin,GPIO_PIN_RESET);
     Write_Max7219_byte(address);           
     Write_Max7219_byte(dat);              
 
        HAL_GPIO_WritePin(GPIOC, cs_Pin, GPIO_PIN_SET);
}


然后初始化8279

void Init_MAX7219(void)
{
 Write_Max7219(0x09, 0x00);       //????:BCD?
 Write_Max7219(0x0a, 0x03);       //??
 Write_Max7219(0x0b, 0x07);       //????;8??????
 Write_Max7219(0x0c, 0x01);       //????:0,????:1
 Write_Max7219(0x0f, 0x00);       //????:1;????,????:0
}


取字模

uchar const 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},//ÖÐ
{0xFE,0xBA,0x92,0xBA,0x92,0x9A,0xBA,0xFE},//¹ú
};



开始测试吧

void max8279test(void)
{
 uchar i,j;
 
    HAL_Delay(50);
 Init_MAX7219();  


  for(j=0;j<38;j++)
  {
   for(i=1;i<9;i++)
    Write_Max7219(i,disp1[j][i-1]);
 
      HAL_Delay(1000);
  }  
 
}


然后就亮起来了。

 视频不会上传,估计得传到其他网站,然后贴链接吧,太麻烦了,算了吧



助工
2018-11-16 21:42:00     打赏
2楼

视频不会传,贴个图吧图片.png


高工
2018-11-16 22:55:53     打赏
3楼

用河南话来说:中


管理员
2018-11-19 09:33:08     打赏
4楼

楼主棒棒哒


共4条 1/1 1 跳转至

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