日志

STM32经IIC与OLED通信

已有 4635 次阅读2015-3-27 11:31 | 通信

最近搞STM32与OLED通信，整合“百家”之言弄出来的，谢谢大家的帮助。以下是STM32经IIC与OLED通信代码，至于以下数组

extern unsigned char F16x16[1024];

extern unsigned char BMP[2048];

extern const unsigned char F6x8[92][6];

extern const unsigned char F8X16[1600];

数据太大，不便粘贴；如有需要的朋友，可以联系我传给你；目前实验已完成，由于权限的问题，不能上传图片，敬请谅解。

个人感觉IIC通信比四线SPI(见上篇博客）简单，具体体现：硬件、软件和接线都比较少，只代表个人观点；其实如果会的话，应该都差不多。

IIC.h

#ifndef __IIC_H

#define __IIC_H

#ifdef __cplusplus

extern "C" {

#endif

/*************Pin Define***************/

#define SCL_HIGH GPIO_SetBits(GPIOB, GPIO_Pin_8) //LED1点亮//P1OUT|=BIT0 //SCL P1.0

#define SCL_LOW GPIO_ResetBits(GPIOB, GPIO_Pin_8) //P1OUT&=~BIT0

#define SDA_HIGH GPIO_SetBits(GPIOB, GPIO_Pin_9) //P1OUT|=BIT1 //SDA P1.1

#define SDA_LOW GPIO_ResetBits(GPIOB, GPIO_Pin_9) //P1OUT&=~BIT1

/****************************************************/

void OLED_Initial(void);

void IIC_Start(void);

void IIC_Stop(void);

void Write_IIC_Command(unsigned char IIC_Command);

void Write_IIC_Data(unsigned char IIC_Data);

void Write_IIC_Byte(unsigned char IIC_Byte);

void LCD_Set_Pos(unsigned char x, unsigned char y);

void LCD_CLS(void);

void LCD_P8x16Str(unsigned char x,unsigned char y,unsigned char ch[]);

void LCD_P16x16Ch(unsigned char x,unsigned char y,unsigned char N);

void LCD_P6x8Str(unsigned char x,unsigned char y,unsigned char ch[]);

void Draw_BMP(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char y1,unsigned char BMP[]);

#ifdef __cplusplus

}

#endif

IIC.C

#include

#include "stm32f10x_i2c.h"

#include "IIC.h"

#include "delay.h"

#include "sys.h"

#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

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////

void OLED_Initial()

{

GPIO_InitTypeDef GPIO_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);

/* PB8,9 SCL and SDA */

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

GPIO_Init(GPIOB, &GPIO_InitStructure);

delay_ms(100); //延时

Write_IIC_Command(0xAE); //display off

Write_IIC_Command(0x20); //Set Memory Addressing Mode

Write_IIC_Command(0x10); //00,Horizontal Addressing Mode;01,Vertical Addressing Mode;10,Page Addressing Mode (RESET);11,Invalid

Write_IIC_Command(0xb0); //Set Page Start Address for Page Addressing Mode,0-7

Write_IIC_Command(0xc8); //Set COM Output Scan Direction

Write_IIC_Command(0x00);//---set low column address

Write_IIC_Command(0x10);//---set high column address

Write_IIC_Command(0x40);//--set start line address

Write_IIC_Command(0x81);//--set contrast control register

Write_IIC_Command(0x7f);

Write_IIC_Command(0xa1);//--set segment re-map 0 to 127

Write_IIC_Command(0xa6);//--set normal display

Write_IIC_Command(0xa8);//--set multiplex ratio(1 to 64)

Write_IIC_Command(0x3F);//

Write_IIC_Command(0xa4);//0xa4,Output follows RAM content;0xa5,Output ignores RAM content

Write_IIC_Command(0xd3);//-set display offset

Write_IIC_Command(0x00);//-not offset

Write_IIC_Command(0xd5);//--set display clock divide ratio/oscillator frequency

Write_IIC_Command(0xf0);//--set divide ratio

Write_IIC_Command(0xd9);//--set pre-charge period

Write_IIC_Command(0x22); //

Write_IIC_Command(0xda);//--set com pins hardware configuration

Write_IIC_Command(0x12);

Write_IIC_Command(0xdb);//--set vcomh

Write_IIC_Command(0x20);//0x20,0.77xVcc

Write_IIC_Command(0x8d);//--set DC-DC enable

Write_IIC_Command(0x14);//

Write_IIC_Command(0xaf);//--turn on oled panel

LCD_CLS();

LCD_Set_Pos(0,0);

}

/**********************************************

//IIC Start

**********************************************/

void IIC_Start()

{

SCL_HIGH;

SDA_HIGH;

SDA_LOW;

SCL_LOW;

}

/**********************************************

//IIC Stop

**********************************************/

void IIC_Stop()

{

SCL_LOW;

SDA_LOW;

SCL_HIGH;

SDA_HIGH;

}

/**********************************************

// IIC Write byte

**********************************************/

void Write_IIC_Byte(unsigned char IIC_Byte)

{

unsigned char i;

for(i=0;i<8;i++)

{

if(IIC_Byte&0x80) //1?0?

SDA_HIGH;

else

SDA_LOW;

SCL_HIGH;

SCL_LOW;

IIC_Byte<<=1; //loop

}

SDA_HIGH;

SCL_HIGH;

SCL_LOW;

}

/**********************************************

// IIC Write Command

**********************************************/

void Write_IIC_Command(unsigned char IIC_Command)

{

IIC_Start();

Write_IIC_Byte(0x78); //Slave address,SA0=0

Write_IIC_Byte(0x00); //write command

Write_IIC_Byte(IIC_Command);

IIC_Stop();

}

/**********************************************

// IIC Write Data

**********************************************/

void Write_IIC_Data(unsigned char IIC_Data)

{

IIC_Start();

Write_IIC_Byte(0x78);

Write_IIC_Byte(0x40); //write data

Write_IIC_Byte(IIC_Data);

IIC_Stop();

}

/*********************LCD 设置坐标************************************/

void LCD_Set_Pos(unsigned char x, unsigned char y)

{

Write_IIC_Command(0xb0+y);

Write_IIC_Command(((x&0xf0)>>4)|0x10);

Write_IIC_Command((x&0x0f)|0x01);

}

/*********************LCD复位************************************/

void LCD_CLS(void)

{

unsigned char y,x;

for(y=0;y<8;y++)

{

Write_IIC_Command(0xb0+y);

Write_IIC_Command(0x01);

Write_IIC_Command(0x10);

for(x=0;x<X_WIDTH;x++)

Write_IIC_Data(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++)

Write_IIC_Data(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 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++)

Write_IIC_Data(F8X16[c*16+i]);

LCD_Set_Pos(x,y+1);

for(i=0;i<8;i++)

Write_IIC_Data(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++) //

{

Write_IIC_Data(F16x16[adder]);

adder += 1;

}

LCD_Set_Pos(x,y + 1);

for(wm = 0;wm < 16;wm++) //

{

Write_IIC_Data(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++)

{

Write_IIC_Data(BMP[j++]);

}

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////

int main(void)

{

/* Add your application code here*/

char i;

LED_GPIO_Config();

delay_init(72); //延时初始化

OLED_Initial();

LCD_P8x16Str(28,0,"OLED TEST");

LCD_P8x16Str(20,2,"OLEDDISPLAY");

LCD_P6x8Str(16,5,"315322339@qq.com");

LCD_P6x8Str(34,6,"2014-11-22");

delay_ms(1500); //延时1s

Draw_BMP(0,0,128,8,BMP); //图片显示

delay_ms(1000);

LCD_CLS();

/* Infinite loop */

while(1)

{

LED4_OFF;

delay_ms(500); //延时1s

LED4_ON;

delay_ms(500); //延时1s

for(i=0; i<8; i++)

{

LCD_P16x16Ch(i*16,0,i); //点阵显示

LCD_P16x16Ch(i*16,2,i+8);

LCD_P16x16Ch(i*16,4,i+16);

LCD_P16x16Ch(i*16,6,i+24);

}

收藏邀请举报

全部作者的其他最新日志

评论 (0 个评论)

crystal008