oled显示有问题，初始化后应该啥也不显示，但却亮了一大片

Question

为什么我的oled初始化以后就成这样了，在最小系统板上就可以正常显示

这是我用的板子的原理图

Answer 1

下面是我oled.c里的代码

#include "stm32f10x.h"
#include "oledfont.h"

/*????*/
#define OLED_W_SCL(x)        GPIO_WriteBit(GPIOB, GPIO_Pin_11, (BitAction)(x))
#define OLED_W_SDA(x)        GPIO_WriteBit(GPIOB, GPIO_Pin_10, (BitAction)(x))

/*?????*/
void OLED_I2C_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
     GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
     GPIO_Init(GPIOB, &GPIO_InitStructure);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
     GPIO_Init(GPIOB, &GPIO_InitStructure);
    
    OLED_W_SCL(1);
    OLED_W_SDA(1);
}

/**
  * @brief  I2C??
  * @param  ?
  * @retval ?
  */
void OLED_I2C_Start(void)
{
    OLED_W_SDA(1);
    OLED_W_SCL(1);
    OLED_W_SDA(0);
    OLED_W_SCL(0);
}

/**
  * @brief  I2C??
  * @param  ?
  * @retval ?
  */
void OLED_I2C_Stop(void)
{
    OLED_W_SDA(0);
    OLED_W_SCL(1);
    OLED_W_SDA(1);
}

/**
  * @brief  I2C??????
  * @param  Byte ????????
  * @retval ?
  */
void OLED_I2C_SendByte(uint8_t Byte)
{
    uint8_t i;
    for (i = 0; i < 8; i++)
    {
        OLED_W_SDA(Byte & (0x80 >> i));
        OLED_W_SCL(1);
        OLED_W_SCL(0);
    }
    OLED_W_SCL(1);    //???????,???????
    OLED_W_SCL(0);
}

/**
  * @brief  OLED???
  * @param  Command ??????
  * @retval ?
  */
void OLED_WriteCommand(uint8_t Command)
{
    OLED_I2C_Start();
    OLED_I2C_SendByte(0x78);        //????
    OLED_I2C_SendByte(0x00);        //???
    OLED_I2C_SendByte(Command); 
    OLED_I2C_Stop();
}

/**
  * @brief  OLED???
  * @param  Data ??????
  * @retval ?
  */
void OLED_WriteData(uint8_t Data)
{
    OLED_I2C_Start();
    OLED_I2C_SendByte(0x78);        //????
    OLED_I2C_SendByte(0x40);        //???
    OLED_I2C_SendByte(Data);
    OLED_I2C_Stop();
}

/**
  * @brief  OLED??????
  * @param  Y ???????,???????,??:0~7
  * @param  X ???????,???????,??:0~127
  * @retval ?
  */
void OLED_SetCursor(uint8_t Y, uint8_t X)
{
    OLED_WriteCommand(0xB0 | Y);                    //??Y??
    OLED_WriteCommand(0x10 | ((X & 0xF0) >> 4));    //??X???4?
    OLED_WriteCommand(0x00 | (X & 0x0F));            //??X???4?
}

/**
  * @brief  OLED??
  * @param  ?
  * @retval ?
  */
void OLED_Clear(void)
{  
    uint8_t i, j;
    for (j = 0; j < 8; j++)
    {
        OLED_SetCursor(j, 0);
        for(i = 0; i < 128; i++)
        {
            OLED_WriteData(0x00);
        }
    }
}

/**
  * @brief  OLED??????
  * @param  Line ???,??:1~4
  * @param  Column ???,??:1~16
  * @param  Char ????????,??:ASCII????
  * @retval ?
  */
void OLED_ShowChar(uint8_t Line, uint8_t Column, char Char)
{          
    uint8_t i;
    OLED_SetCursor((Line - 1) * 2, (Column - 1) * 8);        //???????????
    for (i = 0; i < 8; i++)
    {
        OLED_WriteData(OLED_F8x16[Char - ' '][i]);            //????????
    }
    OLED_SetCursor((Line - 1) * 2 + 1, (Column - 1) * 8);    //???????????
    for (i = 0; i < 8; i++)
    {
        OLED_WriteData(OLED_F8x16[Char - ' '][i + 8]);        //????????
    }
}

/**
  * @brief  OLED?????
  * @param  Line ?????,??:1~4
  * @param  Column ?????,??:1~16
  * @param  String ???????,??:ASCII????
  * @retval ?
  */
void OLED_ShowString(uint8_t Line, uint8_t Column, char *String)
{
    uint8_t i;
    for (i = 0; String[i] != '\0'; i++)
    {
        OLED_ShowChar(Line, Column + i, String[i]);
    }
}

/**
  * @brief  OLED????
  * @retval ?????X?Y??
  */
uint32_t OLED_Pow(uint32_t X, uint32_t Y)
{
    uint32_t Result = 1;
    while (Y--)
    {
        Result *= X;
    }
    return Result;
}

/**
  * @brief  OLED????(???,??)
  * @param  Line ?????,??:1~4
  * @param  Column ?????,??:1~16
  * @param  Number ??????,??:0~4294967295
  * @param  Length ????????,??:1~10
  * @retval ?
  */
void OLED_ShowNum(uint8_t Line, uint8_t Column, uint32_t Number, uint8_t Length)
{
    uint8_t i;
    for (i = 0; i < Length; i++)                            
    {
        OLED_ShowChar(Line, Column + i, Number / OLED_Pow(10, Length - i - 1) % 10 + '0');
    }
}

/**
  * @brief  OLED????(???,????)
  * @param  Line ?????,??:1~4
  * @param  Column ?????,??:1~16
  * @param  Number ??????,??:-2147483648~2147483647
  * @param  Length ????????,??:1~10
  * @retval ?
  */
void OLED_ShowSignedNum(uint8_t Line, uint8_t Column, int32_t Number, uint8_t Length)
{
    uint8_t i;
    uint32_t Number1;
    if (Number >= 0)
    {
        OLED_ShowChar(Line, Column, '+');
        Number1 = Number;
    }
    else
    {
        OLED_ShowChar(Line, Column, '-');
        Number1 = -Number;
    }
    for (i = 0; i < Length; i++)                            
    {
        OLED_ShowChar(Line, Column + i + 1, Number1 / OLED_Pow(10, Length - i - 1) % 10 + '0');
    }
}

/**
  * @brief  OLED????(????,??)
  * @param  Line ?????,??:1~4
  * @param  Column ?????,??:1~16
  * @param  Number ??????,??:0~0xFFFFFFFF
  * @param  Length ????????,??:1~8
  * @retval ?
  */
void OLED_ShowHexNum(uint8_t Line, uint8_t Column, uint32_t Number, uint8_t Length)
{
    uint8_t i, SingleNumber;
    for (i = 0; i < Length; i++)                            
    {
        SingleNumber = Number / OLED_Pow(16, Length - i - 1) % 16;
        if (SingleNumber < 10)
        {
            OLED_ShowChar(Line, Column + i, SingleNumber + '0');
        }
        else
        {
            OLED_ShowChar(Line, Column + i, SingleNumber - 10 + 'A');
        }
    }
}

/**
  * @brief  OLED????(???,??)
  * @param  Line ?????,??:1~4
  * @param  Column ?????,??:1~16
  * @param  Number ??????,??:0~1111 1111 1111 1111
  * @param  Length ????????,??:1~16
  * @retval ?
  */
void OLED_ShowBinNum(uint8_t Line, uint8_t Column, uint32_t Number, uint8_t Length)
{
    uint8_t i;
    for (i = 0; i < Length; i++)                            
    {
        OLED_ShowChar(Line, Column + i, Number / OLED_Pow(2, Length - i - 1) % 2 + '0');
    }
}

void OLED_Fill(unsigned char Fill_Data)  //????
{
    unsigned char m,n;
    
    for(m=0;m<8;m++){
        OLED_WriteCommand(0xb0+m);
        OLED_WriteCommand(0x00);
        OLED_WriteCommand(0x10);
    
      for(n=0;n<128;n++){
        OLED_WriteCommand(Fill_Data);
        }
    }
}

/**
  * @brief  OLED???
  * @param  ?
  * @retval ?
  */
void OLED_Init(void)
{
    uint32_t i, j;
    
    for (i = 0; i < 1000; i++)            //????
    {
        for (j = 0; j < 1000; j++);
    }
    
    OLED_I2C_Init();            //?????
    
    OLED_WriteCommand(0xAE);    //????
    
    OLED_WriteCommand(0xD5);    //?????????/?????
    OLED_WriteCommand(0x80);
    
    OLED_WriteCommand(0xA8);    //???????
    OLED_WriteCommand(0x3F);
    
    OLED_WriteCommand(0xD3);    //??????
    OLED_WriteCommand(0x00);
    
    OLED_WriteCommand(0x40);    //???????
    
    OLED_WriteCommand(0xA1);    //??????,0xA1?? 0xA0????
    
    OLED_WriteCommand(0xC8);    //??????,0xC8?? 0xC0????

    OLED_WriteCommand(0xDA);    //??COM??????
    OLED_WriteCommand(0x12);
    
    OLED_WriteCommand(0x81);    //???????
    OLED_WriteCommand(0xCF);

    OLED_WriteCommand(0xD9);    //???????
    OLED_WriteCommand(0xF1);

    OLED_WriteCommand(0xDB);    //??VCOMH??????
    OLED_WriteCommand(0x30);

    OLED_WriteCommand(0xA4);    //????????/??

    OLED_WriteCommand(0xA6);    //????/????

    OLED_WriteCommand(0x8D);    //?????
    OLED_WriteCommand(0x14);

    OLED_WriteCommand(0xAF);    //????
        
    OLED_Clear();                //OLED??
}