基于STM32的常用数码管芯片TM1637驱动

IIC协议这里就不多说了；

使用模拟IIC口 定义B14 B15

#define AnalonSDA_Pin GPIO_PIN_12
#define AnalonSDA_GPIO_Port GPIOB
#define AnalonSCL_Pin GPIO_PIN_13
#define AnalonSCL_GPIO_Port GPIOB

IO配置为输出

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOB, AnalonSDA_Pin|AnalonSCL_Pin|BIG_SDA_Pin|BIG_SCL_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pins : PBPin PBPin */
  GPIO_InitStruct.Pin = AnalonSDA_Pin|AnalonSCL_Pin|BIG_SDA_Pin|BIG_SCL_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

驱动程序如下

void TM1637_start(void)
{
 SCLK_H;
 Delay_us(1);
 DIO_H;
 Delay_us(1);
 DIO_L;
 Delay_us(1);
 SCLK_L;
 Delay_us(1);
}
void TM1637_stop(void)
{
 SCLK_L;
 Delay_us(1);
 DIO_L;
 Delay_us(1);
 SCLK_H;
 Delay_us(1);
 DIO_H;
 Delay_us(1);
}

void TM1637_ack(void)
{
 SCLK_L;
 DIO_H;    
 while(HAL_GPIO_ReadPin(GPIOB, BIG_SDA_Pin));
 SCLK_H;     
 DIO_IN;
  
}

void TM1637_Write(unsigned char DATA)   //写数据函数
{
 unsigned char i;   
 for(i=0;i<8;i++)        
  {
   SCLK_L;     
   if(DATA & 0x01)DIO_H;  //SDA
   else DIO_L;
   DATA >>= 1;      
   SCLK_H;
  }  
 TM1637_ack();
}

unsigned char READ_KEY(void)
{
 unsigned char i,temp=0;
 TM1637_start();
 TM1637_Write(READ_COMMAND);
 DIO_IN;
 for(i=0;i<8;i++)
  {
   SCLK_L;
   Delay_us(1);
   temp<<=1;
   SCLK_H;
   if(HAL_GPIO_ReadPin(GPIOB, BIG_SDA_Pin))temp+=1;
   Delay_us(1);
  }
 TM1637_ack();
 TM1637_stop();
 return temp;
}
void display_fix(unsigned char add,unsigned char DispData)  //指定地址写入数据
{
 TM1637_start();          //start signal sent to TM1637 from MCU
 TM1637_Write(ADD_FIX);//
 TM1637_stop();           //
 TM1637_start();          //
 TM1637_Write(ADDR_COMMAND|add);//
 TM1637_Write(DispData);//
 TM1637_stop();            //
}
void display_char(unsigned char add,unsigned char dis_char)
{
 unsigned char point_flag,char_code;
 point_flag=dis_char&0x80;
 dis_char&=0x7f;
 if(dis_char<16)
  char_code=tab[dis_char];
 else switch(dis_char)
  {
   case 'L':char_code=0x38;break;
   case 'H':char_code=0x76;break;
   case 'U':char_code=0x3e;break;
   case 'N':char_code=0x37;break;
   case 'P':char_code=0x73;break;
   case 'J':char_code=0x0e;break;
   case 'O':char_code=0x3f;break;
   case 'o':char_code=0x5c;break;
   case 'n':char_code=0x54;break;
   case 'Y':char_code=0x6e;break;
   case ' ':char_code=0;break;
   default:char_code=dis_char;break;
  }
 display_fix(add,char_code|point_flag);
}
void init_TM1637(void)
{
 unsigned char i;
 TM1637_start();
 TM1637_Write(ADD_AUTO);
 TM1637_stop(); 
 TM1637_start();
 TM1637_Write(ADDR_COMMAND);
 for(i=0;i<6;i++)
 TM1637_Write(0);
 TM1637_stop(); 
 TM1637_start();
 TM1637_Write(BRIGHT);
 TM1637_stop();
}

void Delay_us(unsigned  int i)
{
  for(;i>0;i--);
}

最后在任务中调用

void StartDefaultTask(void const * argument)
{
 unsigned char i,j; 
 init_TM1637();
  for(;;)
  {
   for(i=0;i<16;i++)
  {
   for(j=0;j<4;j++)
   {
    display_char(j,((j+i)%16)|0x80);
   }
   HAL_Delay(500);
  }  
  HAL_Delay(1);
  }
}