stm32f103rb驱动max7219点阵无反应，代码如下

只看该作者 · 2024-4-11 06:51

**spi.c**

#include "bsp_spi_dot_matrix_led.h"

#include "bsp_usart.h"

/**

  * [url=home.php?mod=space&uid=247401]@brief[/url]  SPI_FLASH初始化

  * @param  无

  * @retval 无

  */

void SPI_DOT_LED_Init(void)

{

  

  GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB, ENABLE);

    

  /* 配置SPI的 CS引脚，普通IO即可 */

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

  GPIO_Init(GPIOB, &GPIO_InitStructure);

    

     /* 配置SPI的 CLK引脚，普通IO即可 */

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

  GPIO_Init(GPIOB, &GPIO_InitStructure);

    

    

     /* 配置SPI的 DIN引脚，普通IO即可 */

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

  GPIO_Init(GPIOB, &GPIO_InitStructure);

 

}

 ////-------------------------------------------

////功能：向MAX7219写入数据

////入口参数：address、dat

////出口参数：无

////说明：

 

//--------------------------------------------

//功能：向MAX7219(U3)写入字节

//入口参数：DATA 

//出口参数：无

//说明：

void Write_Max7219_byte(uchar DATA)         

{          

            uchar i,w;    

        Max7219_pinCS_LOW();        

        for(i=8;i>=1;i--)

        {          

            Max7219_pinCLK_LOW();

                        w=DATA&0x80;

                        w=DATA>>7;

                      Max7219_pinDIN(w);

                        printf(" %d \n",w);

                DATA=DATA<<1;//八位的data从高到底把数据以此发送给Max7219_pinDIN

            Max7219_pinCLK_HIGH();

           }                                 

}

 

 void Write_Max7219(uchar address,uchar dat)

{ 

     Max7219_pinCS_LOW();

       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 

       Max7219_pinCS_HIGH();                        

}

 

void Init_MAX7219(void)

{

 Write_Max7219(0x09, 0x00);       //译码方式：BCD码

 Write_Max7219(0x0a, 0x03);       //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);       //显示测试：1；测试结束，正常显示：0

}

 

/*********************************************END OF FILE**********************/

main.c

#include "stm32f10x.h"

#include "bsp_spi_dot_matrix_led.h"

#include "bsp_SysTick.h"

 

/* disp1为需要显示字库*/ //其他字可以去网上下载  取模软件

uchar disp1[38][8]={

{0xB4,0x4A,0x8A,0xBE,0x4A,0x4A,0x41,0xFF},/*"迅",0*/

{0x40,0x88,0x7E,0x48,0x4C,0x52,0x7F,0x0},/*"达",0*/

{0x0,0x41,0x22,0x14,0x8,0x14,0x22,0x41},//X

{0x42,0x42,0x42,0x42,0x42,0x42,0x22,0x1C},//U

{0x0,0x42,0x62,0x52,0x4A,0x46,0x42,0x0},//N

{0x7C,0x42,0x42,0x42,0x42,0x42,0x7C,0x0},//D

{0x8,0x14,0x22,0x3E,0x22,0x22,0x22,0x22},//A

{0x10,0x5B,0x24,0x24,0x28,0x18,0x18,0x24},/*"文",0*/

{0x00,0x7E,0x10,0x2C,0x24,0x3C,0x24,0x3C},/*"百",0*/

//{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

};

 

int main(void)

{

    

    SysTick_Init();//始终初始化 

    SPI_DOT_LED_Init();//初始化传输用的GPIO  

    Init_MAX7219();//初始化MAX7219 

 

 

    while(1)

 {

     uchar i,j;

   for(j=0;j<38;j++)

  {

   for(i=1;i<9;i++)

    Write_Max7219(i,disp1[j][i-1]); 

    SysTick_Delay_Ms( 1000);

  } 

}

}

/*********************************************END OF FILE**********************/