基于STM32F207的数码管编程

digital_tube.c

#include "digital_tube.h"
#inclued "max7219.h"

#define REG_NO_OP 0x00  // 定义空操作 register
#define DIG_1 0x01        // 定义数码管1 register 
#define DIG_2 0x02        // 定义数码管2 register 
#define DIG_3 0x03        // 定义数码管3 register 
#define DIG_4 0x04        // 定义数码管4 register 
#define DIG_5 0x05        // 定义数码管5 register 
#define DIG_6 0x06        // 定义数码管6 register 
#define DIG_7 0x07        // 定义数码管7 register 
#define DIG_8 0x08        // 定义数码管8 register 
#define REG_DECODE 0x09       // 定义解码控制 register 
#define REG_INTENSITY 0x0a     // 定义显示亮度 register 
#define REG_SCAN_LIMIT 0x0b    // 定义扫描限制 register 
#define REG_SHUTDOWN 0x0c    // 定义"shutdown"模式 register 
#define REG_DISPLAY_TEST 0x0f  // 定义"display test"模式 register 
#define INTENSITY_MIN 0x00      // 定义最低显示亮度 
#define INTENSITY_MAX 0x0f      // 定义最高显示亮度 /
char code_table[10]= {0x7e,0x30,0x6d,0x79,0x33,0x5b,0x5f,0x70,0x7f,0x7b};   /*采用数组*/ 
#define DATA GPIO_Pin_0   //定义GPIO_Pin_0连接MAX7219 DATA引脚 
#define CLK GPIO_Pin_1    //定义GPIO_Pin_1连接MAX7219 CLK 引脚 
#define CS GPIO_Pin_2     //定义GPIO_Pin_2连接MAX7219 CS 引脚



void IO_cfg()
{

  GPIO_InitTypeDef GPIO_InitStructure;    
  GPIO_InitStructure.GPIO_Pin = DATA|CLK|CS; //选择引脚2 3 5
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; //选择输入模式为浮空输入
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;          //输出频率最大50MHz
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
  GPIO_Init(GPIOE,&GPIO_InitStructure);                                 //设置PC.2/PC.3/PC.5              
}

void Delay(__IO uint32_t nCount)
{
  while(nCount--)
  {
  }
}


void test7219(void)                          //检测每段数码管是否能够正常工作
{
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOE , ENABLE);
  IO_cfg();
  MAX7219_Init();
  uint8_t i;
  char test[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
 
  for(i=0;i<10;i++)
  {
     MAX7219_Write (DIG_1,test[i] );
     MAX7219_Write (DIG_2,test[i] );
     MAX7219_Write (DIG_3,test[i] );