该实验是用stm32f103c8t6驱动I2C方式的OLED屏幕，可以显示数字，符号，英文字符串，中文字符串（需要自己做字库）以及BMP图片（需要自己符库） (如果对大家有帮助的话，麻烦在论坛里按一下支持给我点点鼓励，谢谢）
stm32单片机源程序如下:
- #include "oled.h"
- #include "codetab.h"
- #include "delay.h"
- #include "myiic.h"
- ///**********************************************
- //// 通过I2C总线写一个字节
- //**********************************************/
- void Write_IIC_Byte(unsigned char IIC_Byte)
- {
- unsigned char i;
- for(i=0;i<8;i++)
- {
- if(IIC_Byte & 0x80)
- IIC_SDA=1;
- else
- IIC_SDA=0;
- IIC_SCL=high;
- delay_us(4);
- IIC_SCL=0;
- IIC_Byte<<=1;
- }
- IIC_SDA = 1; //原程序这里有一个拉高SDA，根据OLED的DATASHEET，此句必须去掉。
- IIC_SCL=1;
- delay_us(4);
- IIC_SCL=0;
- }
- /*********************OLED写数据************************************/
- void OLED_WrDat(unsigned char IIC_Data)
- {
- IIC_Start();
- IIC_Send_Byte(0x78); //D/C#=0; R/W#=0
- IIC_Wait_Ack();
- IIC_Send_Byte(0x40); //write data
- IIC_Wait_Ack();
- IIC_Send_Byte(IIC_Data);
- IIC_Wait_Ack();
- IIC_Stop();
- }
- /*********************OLED写命令************************************/
- void OLED_WrCmd(unsigned char IIC_Command)
- {
- IIC_Start();
- IIC_Send_Byte(0x78); //Slave address,SA0=0
- if(IIC_Wait_Ack())
- {
- while(1);
- }
- IIC_Send_Byte(0x00); //write command
- IIC_Wait_Ack();
- IIC_Send_Byte(IIC_Command);
- IIC_Wait_Ack();
- IIC_Stop();
- }
- /*********************OLED 设置坐标************************************/
- void OLED_Set_Pos(unsigned char x, unsigned char y)
- {
- OLED_WrCmd(0xb0+y);
- OLED_WrCmd(((x&0xf0)>>4)|0x10);
- OLED_WrCmd((x&0x0f)|0x01);
- }
- /*********************OLED全屏************************************/
- void OLED_Fill(unsigned char bmp_dat)
- {
- unsigned char y,x;
- for(y=0;y<8;y++)
- {
- OLED_WrCmd(0xb0+y);
- OLED_WrCmd(0x01);
- OLED_WrCmd(0x10);
- for(x=0;x<X_WIDTH;x++)
- OLED_WrDat(bmp_dat);
- }
- }
- /*********************OLED复位************************************/
- void OLED_CLS(void)
- {
- unsigned char y,x;
- for(y=0;y<8;y++)
- {
- OLED_WrCmd(0xb0+y);
- OLED_WrCmd(0x01);
- OLED_WrCmd(0x10);
- for(x=0;x<X_WIDTH;x++)
- OLED_WrDat(0);
- }
- }
- /*********************OLED初始化************************************/
- void OLED_Init(void)
- {
- delay_ms(500);//初始化之前的延时很重要！
- OLED_WrCmd(0xae);//--turn off oled panel
- OLED_WrCmd(0x00);//---set low column address
- OLED_WrCmd(0x10);//---set high column address
- OLED_WrCmd(0x40);//--set start line address Set Mapping RAM Display Start Line (0x00~0x3F)
- OLED_WrCmd(0x81);//--set contrast control register
- OLED_WrCmd(Brightness); // Set SEG Output Current Brightness
- OLED_WrCmd(0xa1);//--Set SEG/Column Mapping 0xa0左右反置 0xa1正常
- OLED_WrCmd(0xc8);//Set COM/Row Scan Direction 0xc0上下反置 0xc8正常
- OLED_WrCmd(0xa6);//--set normal display
- OLED_WrCmd(0xa8);//--set multiplex ratio(1 to 64)
- OLED_WrCmd(0x3f);//--1/64 duty
- OLED_WrCmd(0xd3);//-set display offset Shift Mapping RAM Counter (0x00~0x3F)
- OLED_WrCmd(0x00);//-not offset
- OLED_WrCmd(0xd5);//--set display clock divide ratio/oscillator frequency
- OLED_WrCmd(0x80);//--set divide ratio, Set Clock as 100 Frames/Sec
- OLED_WrCmd(0xd9);//--set pre-charge period
- OLED_WrCmd(0xf1);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
- OLED_WrCmd(0xda);//--set com pins hardware configuration
- OLED_WrCmd(0x12);
- OLED_WrCmd(0xdb);//--set vcomh
- OLED_WrCmd(0x40);//Set VCOM Deselect Level
- OLED_WrCmd(0x20);//-Set Page Addressing Mode (0x00/0x01/0x02)
- OLED_WrCmd(0x02);//
- OLED_WrCmd(0x8d);//--set Charge Pump enable/disable
- OLED_WrCmd(0x14);//--set(0x10) disable
- OLED_WrCmd(0xa4);// Disable Entire Display On (0xa4/0xa5)
- OLED_WrCmd(0xa6);// Disable Inverse Display On (0xa6/a7)
- OLED_WrCmd(0xaf);//--turn on oled panel
- OLED_Fill(0x00); //初始清屏
- OLED_Set_Pos(0,0);
- }
- /***************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 OLED_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++;}
- OLED_Set_Pos(x,y);
- for(i=0;i<6;i++)
- OLED_WrDat(F6x8[c][i]);
- 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 OLED_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++;}
- OLED_Set_Pos(x,y);
- for(i=0;i<8;i++)
- OLED_WrDat(F8X16[c*16+i]);
- OLED_Set_Pos(x,y+1);
- for(i=0;i<8;i++)
- OLED_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 OLED_P16x16Ch(unsigned char x,unsigned char y,unsigned char N)
- {
- unsigned char wm=0;
- unsigned int adder=32*N;
- OLED_Set_Pos(x , y);
- for(wm = 0;wm < 16;wm++)
- {
- OLED_WrDat(F16x16[adder]);
- adder += 1;
- }
- OLED_Set_Pos(x,y + 1);
- for(wm = 0;wm < 16;wm++)
- {
- OLED_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++)
- {
- OLED_Set_Pos(x0,y);
- for(x=x0;x<x1;x++)
- {
- OLED_WrDat(BMP[j++]);
- }
- }
- }
所有资料51hei提供下载:
I2C_OLED.rar
(280.29 KB, 下载次数: 230)
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