stm32经SPI与OLED通信

只看该作者 · 2014-11-22 12:54

本帖最后由 crystal1987 于 2014-11-24 10:12 编辑

请高手帮忙分析一下代码，看看那里有问题，现在代码能够正常运行，指示灯闪烁，就是OLED屏不能正常点亮？

//#define LCD_SCL_H  GPIO_ResetBits(GPIOB, GPIO_Pin_8)
//#define LCD_SCL_L  GPIO_SetBits(GPIOB, GPIO_Pin_8)

#define LCD_SCL PBout(8)          //时钟 D0（SCLK）
#define LCD_SDA PBout(9)          //D1（MOSI）数据
#define LCD_RST PDout(6)          //复位
#define LCD_DC  PBout(5)          //数据/命令控制

extern void OLED_Init(void) ;
extern void LCD_CLS(void);
extern void LCD_P6x8Str(unsigned char x, unsigned char y,unsigned char ch[]);
extern void LCD_P8x16Str(unsigned char x, unsigned char y,unsigned char ch[]);
extern void LCD_P16x16Ch(unsigned char x,unsigned char  y,unsigned char  N);
extern void Draw_BMP(unsigned char x0,unsigned char  y0,unsigned char  x1,unsigned char  y1,unsigned char BMP[]);

#define XLevelL             0x00
#define XLevelH             0x10
#define XLevel          ((XLevelH&0x0F)*16+XLevelL)
#define Max_Column       128
#define Max_Row             64
#define       Brightness       0xCF
#define X_WIDTH 128
#define Y_WIDTH 64
/*********************LCD 延时1ms************************************/
void LCD_DLY_ms(unsigned int ms)
{
      unsigned int a;
      while(ms)
      {
            a=1800;
            while(a--);
            ms--;
      }
}
/*********************LCD写数据************************************/
void LCD_WrDat(unsigned char dat)
{
      unsigned char i=8;
      LCD_DC=1;
      for(i=0;i<8;i++) //发送一个八位数据
      {
            LCD_SDA=dat&0x80;
            LCD_SCL=0;
            LCD_SCL=1;
            dat<<=1;
      }
}
/*********************LCD写命令************************************/
void LCD_WrCmd(unsigned char cmd)
{
      unsigned char i=8;
      LCD_DC=0;
      for(i=0;i<8;i++) //发送一个八位数据
      {
            LCD_SDA=cmd&0x80;
            LCD_SCL=1;
            LCD_SCL=0;
            cmd<<=1;;
      }
}
/*********************LCD 设置坐标************************************/
void LCD_Set_Pos(unsigned char x, unsigned char y)
{
      LCD_WrCmd(0xb0+y);
      LCD_WrCmd(((x&0xf0)>>4)|0x10);
      LCD_WrCmd((x&0x0f)|0x01);
}
/*********************LCD全屏************************************/
void LCD_Fill(unsigned char bmp_dat)
{
      unsigned char y,x;
      for(y=0;y<8;y++)
      {
            LCD_WrCmd(0xb0+y);
            LCD_WrCmd(0x01);
            LCD_WrCmd(0x10);
            for(x=0;x<X_WIDTH;x++)
                     LCD_WrDat(bmp_dat);
      }
}
/*********************LCD复位************************************/
void LCD_CLS(void)
{
      unsigned char y,x;
      for(y=0;y<8;y++)
      {
            LCD_WrCmd(0xb0+y);
            LCD_WrCmd(0x01);
            LCD_WrCmd(0x10);
            for(x=0;x<X_WIDTH;x++)
            LCD_WrDat(0);
      }
}
/***************功能描述：显示6*8一组标准ASCII字符串       显示的坐标（x,y），y为页范围0～7****************/
void LCD_P6x8Str(unsigned char x,unsigned char  y,unsigned char ch[])
{
      unsigned char c=0,i=0,j=0;
      while (ch[j]!='\0')
      {
            c =ch[j]-32;

            if(x>126){x=0;y++;}
                     LCD_Set_Pos(x,y);
            for(i=0;i<6;i++)
                     LCD_WrDat(F6x8[c]);
            x+=6;
            j++;
      }
}
/*******************功能描述：显示8*16一组标准ASCII字符串       显示的坐标（x,y），y为页范围0～7****************/
void LCD_P8x16Str(unsigned char x,unsigned char  y,unsigned char ch[])
{
      unsigned char c=0,i=0,j=0;
      while (ch[j]!='\0')
      {
            c =ch[j]-32;
            if(x>120){x=0;y++;}
               LCD_Set_Pos(x,y);
            for(i=0;i<8;i++)
               LCD_WrDat(F8X16[c*16+i]);
            LCD_Set_Pos(x,y+1);
            for(i=0;i<8;i++)
               LCD_WrDat(F8X16[c*16+i+8]);
            x+=8;
            j++;
      }
}
/*****************功能描述：显示16*16点阵  显示的坐标（x,y），y为页范围0～7****************************/
void LCD_P16x16Ch(unsigned char x,unsigned char  y,unsigned char  N)
{
      unsigned char wm=0;
      unsigned int adder=32*N;  //
      LCD_Set_Pos(x , y);
      for(wm = 0;wm < 16;wm++)  //
      {
            LCD_WrDat(F16x16[adder]);
            adder += 1;
      }
      LCD_Set_Pos(x,y + 1);
      for(wm = 0;wm < 16;wm++) //
      {
            LCD_WrDat(F16x16[adder]);
            adder += 1;
      }
}
/***********功能描述：显示显示BMP图片128×64起始点坐标(x,y),x的范围0～127，y为页的范围0～7*****************/
void Draw_BMP(unsigned char x0,unsigned char  y0,unsigned char x1,unsigned char  y1,unsigned char BMP[])
{
      unsigned int j=0;
      unsigned char x,y;

      if(y1%8==0) y=y1/8;
      else y=y1/8+1;
      for(y=y0;y<y1;y++)
      {
            LCD_Set_Pos(x0,y);
         for(x=x0;x<x1;x++)
               {
                     LCD_WrDat(BMP[j++]);
               }
      }
}

//初始化SSD1306
void OLED_Init(void)
{
      GPIO_InitTypeDef  GPIO_InitStructure;
      RCC_APB2PeriphClockCmd(       RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOD, ENABLE );

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;                //推挽输出                SCLK - PB8  SDIN - PB9
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
      GPIO_Init(GPIOB, &GPIO_InitStructure);
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;                               //                         DC - PB5
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD ;                //推挽输出
      GPIO_Init(GPIOB, &GPIO_InitStructure);
      GPIO_SetBits(GPIOB, GPIO_Pin_5);
//       GPIO_Write(GPIOB,0X03);
                                                                                                                     //             RST - PD6
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;                //推挽输出
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
      GPIO_Init(GPIOD, &GPIO_InitStructure);
      GPIO_SetBits(GPIOD, GPIO_Pin_6);

      LCD_SCL=1;
      LCD_RST=0;
      LCD_DLY_ms(50);
      LCD_RST=1;    //从上电到下面开始初始化要有足够的时间，即等待RC复位完毕
      LCD_WrCmd(0xae);//--turn off oled panel
      LCD_WrCmd(0x00);//---set low column address
      LCD_WrCmd(0x10);//---set high column address
      LCD_WrCmd(0x40);//--set start line address  Set Mapping RAM Display Start Line (0x00~0x3F)
      LCD_WrCmd(0x81);//--set contrast control register
      LCD_WrCmd(0xcf); // Set SEG Output Current Brightness
      LCD_WrCmd(0xa1);//--Set SEG/Column Mapping    0xa0左右反置 0xa1正常
      LCD_WrCmd(0xc8);//Set COM/Row Scan Direction 0xc0上下反置 0xc8正常
      LCD_WrCmd(0xa6);//--set normal display
      LCD_WrCmd(0xa8);//--set multiplex ratio(1 to 64)
      LCD_WrCmd(0x3f);//--1/64 duty
      LCD_WrCmd(0xd3);//-set display offset       Shift Mapping RAM Counter (0x00~0x3F)
      LCD_WrCmd(0x00);//-not offset
      LCD_WrCmd(0xd5);//--set display clock divide ratio/oscillator frequency
      LCD_WrCmd(0x80);//--set divide ratio, Set Clock as 100 Frames/Sec
      LCD_WrCmd(0xd9);//--set pre-charge period
      LCD_WrCmd(0xf1);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
      LCD_WrCmd(0xda);//--set com pins hardware configuration
      LCD_WrCmd(0x12);
      LCD_WrCmd(0xdb);//--set vcomh
      LCD_WrCmd(0x40);//Set VCOM Deselect Level
      LCD_WrCmd(0x20);//-Set Page Addressing Mode (0x00/0x01/0x02)
      LCD_WrCmd(0x02);//
      LCD_WrCmd(0x8d);//--set Charge Pump enable/disable
      LCD_WrCmd(0x14);//--set(0x10) disable
      LCD_WrCmd(0xa4);// Disable Entire Display On (0xa4/0xa5)
      LCD_WrCmd(0xa6);// Disable Inverse Display On (0xa6/a7)
      LCD_WrCmd(0xaf);//--turn on oled panel
      LCD_Fill(0x00);  //初始清屏
      LCD_Set_Pos(0,0);
}
///////////////////////////////////////////////////////////////////////////////////////
int main(void)
{
      LED_GPIO_Config();
      delay_init(72);          //延时初始化

      OLED_Init();                      //初始化OLED


      LCD_P6x8Str(44,1,"2");
      LCD_P8x16Str(44,0,"SALER");
      LCD_P6x8Str(16,6,"315322339@qq.com");
      LCD_P6x8Str(34,7,"2014-11-22");
      while(1)
      {
            LED4_OFF;
            delay_ms(1500); //延时1s
            LED4_ON;
            delay_ms(1500); //延时1s
      }
}