OLED显示1602HWTW的数据

开发背景

​ 2020年前夕突发疫情,病毒的广泛传播,人们口口相传的危害性,导致体温计、口罩等医用设备供不应求,在此大环境下,我萌发出用自己的能力去测体温的想法。在接触51单片机后,然后学习了相关串口通信知识和OLED显示原理,凭借自己对知识的理解,从工程的构建到最后构想的实现,最后OLED亮起那一瞬间,我感受到了知识的力量。在此期间,学到了很多知识,对涉及这一块的知识更加了解,对自己的未来更加充满希望。

产品介绍

①0.96英寸7针OLED显示屏,支持IIC/SPI接口

0.96OLED显示屏资料 提取码: ez6v


②1.3英寸4针OLED显示屏,支持IIC接口

1.3英寸OLED技术资料 提取码: dw4d

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③温度传感器1608HWTW,红外数字体温传感器,可应用于基于串口通信的体温采集系统

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④89C52单片机

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代码例程

因工程文件较多,不便全文展示,若需完整工程文件,请关注文末微信公众号,发送“1602HWTW”即可

一、0.96英寸OLED屏幕与1608HWTW–SPI–例程

主函数main.c
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/***********0.96英寸OLED屏幕与51单片机连接方式*************/
// GND 电源地
// VCC 接5V或3.3v电源
// D0 P0^0(SCL)
// D1 P0^1(SDA)
/***********温感1608HWTW与51单片机连接方式*************/
// GND 电源地
// VCC 接3.3v电源
// RXD P3^1(TXD)
// TXD P3^0(RXD)#include "REG51.h"
#include "oled.h"
#include "bmp.h"
#include "temp.h"

#define u16 unsigned int
#define u8 unsigned char
int a,b,c,d,e,f,g,h;

void delay(u16 i);
void Display();

void delay (u16 i) //延时函数
{
while(i--);
}

int trans1(int temp)
{
a = temp/1000; //第一位数
b = temp%1000/100; //第二位数
c = temp%100/10; //第三位数
d = temp%10; //第四位数
}

int trans2(int temp)
{
e = temp/1000; //第一位数
f = temp%1000/100; //第二位数
g = temp%100/10; //第三位数
h = temp%10; //第四位数
}

void Display() //显示函数,根据温度的变化改变单片机的功能
{
OLED_ShowCHinese(0,0,0);
OLED_ShowCHinese(16,0,2);
OLED_ShowChar(32,0,':',16);
OLED_ShowNum(40,0,a,1,16);
OLED_ShowNum(48,0,b,1,16);
OLED_ShowChar(56,0,'.',16);
OLED_ShowNum(64,0,c,1,16);
OLED_ShowNum(72,0,d,1,16);
OLED_ShowCHinese(0,2,1);
OLED_ShowCHinese(16,2,2);
OLED_ShowChar(32,2,':',16);
OLED_ShowNum(40,2,e,1,16);
OLED_ShowNum(48,2,f,1,16);
OLED_ShowChar(56,2,'.',16);
OLED_ShowNum(64,2,g,1,16);
OLED_ShowNum(72,2,h,1,16);
}

int main(void)
{
u8 t;
InitUART();
OLED_Init(); //初始化OLED
OLED_Clear();
while(1)
{
// OLED_Clear(); //加这个清屏函数会闪屏
SendOneByte();
delay(20000);
trans1(body_temperature()); //数据转换
Display();
trans2(device_temperature());
Display(); //显示函数
}
}


void UARTInterrupt(void) interrupt 4 //串口中断
{
ReceiveOneByte();
}
温感temp.c
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/****************温度传感器与单片机串口通信***************/
/*采用全双工串行通讯接口,1个起始位、8个数据位、1个停止位、无奇偶校验位,波特率57600bps*/
/*0xF0 OxC0 TWH TWL THH THL CKSUM*/
/*红线:3.3V电源 白线:TX信号线 绿线:RX信号线 黑线:GND电源线*/
/*实现功能:单片机与温感连接,TX线接P3^0,RX线接P3^1,写入程序后,一捂住温感使温度升高,就会有LED显示*/
#include "REG51.h"
#include "temp.h"

#define u16 unsigned int
#define u8 unsigned char

u8 date[2]={0x01,0x02};
u8 rec[7];
u16 acount=0,i;

void InitUART() //串口初始化
{
SCON = 0x50; //设定串口工作方式0101 0000
PCON = 0x80;
TMOD = 0x20;
EA = 1;
ES = 1;
TL1 = TH1 = 0xFF; ////波特率59600
TR1 = 1;
}

void SendOneByte() //发送字节函数
{

SBUF = date[1]; //发送数据
while(!TI); //如果发送未成功的话,循环发送,直至成功
//delay(20);
TI = 0; //发送成功后手动置零,为下一次发送做准备
}

void ReceiveOneByte() //接受字节函数
{
if(RI == 1) //检测是否有数据接收
{
rec[acount] = SBUF; //接收数据
acount++;
RI = 0; //清除标志位
if(acount == 7) acount= 0; //每8次置零一次,为下次计数做准备
}
}

int body_temperature() //体温处理函数
{
int temp1=0;
u8 TWH,TWL;
TWH=rec[2]; //分别将读取到数据传到到高字节TWH与低字节的TWL
TWL=rec[3];
temp1=TWH*256+TWL; //高字节与低字节合并,将数据进行整合
return temp1;
}

int device_temperature() //器温处理函数
{
int temp2=0;
u8 TWH,TWL;
TWH=rec[4]; //分别将读取到数据传到到高字节TWH与低字节的TWL
TWL=rec[5];
temp2=TWH*256+TWL; //高字节与低字节合并,将数据进行整合
return temp2;
}
温感temp.h
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#ifndef __TEMP_H
#define __TEMP_H


void SendOneByte();
void ReceiveOneByte();
void InitUART();
int body_temperature();
int device_temperature();


#endif
###### oled.c
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#include "oled.h"
//#include "stdlib.h"
#include "oledfont.h"
//#include "delay.h"
//OLED的显存
//存放格式如下.
//[0]0 1 2 3 ... 127
//[1]0 1 2 3 ... 127
//[2]0 1 2 3 ... 127
//[3]0 1 2 3 ... 127
//[4]0 1 2 3 ... 127
//[5]0 1 2 3 ... 127
//[6]0 1 2 3 ... 127
//[7]0 1 2 3 ... 127
void delay_ms(unsigned int ms)
{
unsigned int a;
while(ms)
{
a=80;
while(a--);
ms--;
}
return;
}
#if OLED_MODE==1
//向SSD1106写入一个字节。
//dat:要写入的数据/命令
//cmd:数据/命令标志 0,表示命令;1,表示数据;
void OLED_WR_Byte(u8 dat,u8 cmd)
{
DATAOUT(dat);
if(cmd)
OLED_DC_Set();
else
OLED_DC_Clr();
OLED_CS_Clr();
OLED_WR_Clr();
OLED_WR_Set();
OLED_CS_Set();
OLED_DC_Set();
}
#else
//向SSD1306写入一个字节。
//dat:要写入的数据/命令
//cmd:数据/命令标志 0,表示命令;1,表示数据;
void OLED_WR_Byte(u8 dat,u8 cmd)
{
u8 i;
if(cmd)
OLED_DC_Set();
else
OLED_DC_Clr();
OLED_CS_Clr();
for(i=0;i<8;i++)
{
OLED_SCLK_Clr();
if(dat&0x80)
{
OLED_SDIN_Set();
}
else
OLED_SDIN_Clr();
OLED_SCLK_Set();
dat<<=1;
}
OLED_CS_Set();
OLED_DC_Set();
}
#endif
void OLED_Set_Pos(unsigned char x, unsigned char y)
{
OLED_WR_Byte(0xb0+y,OLED_CMD);
OLED_WR_Byte(((x&0xf0)>>4)|0x10,OLED_CMD);
OLED_WR_Byte((x&0x0f)|0x01,OLED_CMD);
}
//开启OLED显示
void OLED_Display_On(void)
{
OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDC命令
OLED_WR_Byte(0X14,OLED_CMD); //DCDC ON
OLED_WR_Byte(0XAF,OLED_CMD); //DISPLAY ON
}
//关闭OLED显示
void OLED_Display_Off(void)
{
OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDC命令
OLED_WR_Byte(0X10,OLED_CMD); //DCDC OFF
OLED_WR_Byte(0XAE,OLED_CMD); //DISPLAY OFF
}
//清屏函数,清完屏,整个屏幕是黑色的!和没点亮一样!!!
void OLED_Clear(void)
{
u8 i,n;
for(i=0;i<8;i++)
{
OLED_WR_Byte (0xb0+i,OLED_CMD); //设置页地址(0~7)
OLED_WR_Byte (0x00,OLED_CMD); //设置显示位置—列低地址
OLED_WR_Byte (0x10,OLED_CMD); //设置显示位置—列高地址
for(n=0;n<128;n++)OLED_WR_Byte(0,OLED_DATA);
} //更新显示
}


//在指定位置显示一个字符,包括部分字符
//x:0~127
//y:0~63
//mode:0,反白显示;1,正常显示
//size:选择字体 16/12
void OLED_ShowChar(u8 x,u8 y,u8 chr)
{
unsigned char c=0,i=0;
c=chr-' ';//得到偏移后的值
if(x>Max_Column-1){x=0;y=y+2;}
if(SIZE ==16)
{
OLED_Set_Pos(x,y);
for(i=0;i<8;i++)
OLED_WR_Byte(F8X16[c*16+i],OLED_DATA);
OLED_Set_Pos(x,y+1);
for(i=0;i<8;i++)
OLED_WR_Byte(F8X16[c*16+i+8],OLED_DATA);
}
else {
OLED_Set_Pos(x,y+1);
for(i=0;i<6;i++)
OLED_WR_Byte(F6x8[c][i],OLED_DATA);

}
}
//m^n函数
u16 oled_pow(u8 m,u8 n)
{
u16 result=1;
while(n--)result*=m;
return result;
}
//显示2个数字
//x,y :起点坐标
//len :数字的位数
//size:字体大小
//mode:模式 0,填充模式;1,叠加模式
//num:数值(0~4294967295);
void OLED_ShowNum(u8 x,u8 y,u16 num,u8 len,u8 size2)
{
u8 t,temp;
u8 enshow=0;
for(t=0;t<len;t++)
{
temp=(num/oled_pow(10,len-t-1))%10;
if(enshow==0&&t<(len-1))
{
if(temp==0)
{
OLED_ShowChar(x+(size2/2)*t,y,' ');
continue;
}else enshow=1;

}
OLED_ShowChar(x+(size2/2)*t,y,temp+'0');
}
}
//显示一个字符号串
void OLED_ShowString(u8 x,u8 y,u8 *chr)
{
unsigned char j=0;
while (chr[j]!='\0')
{ OLED_ShowChar(x,y,chr[j]);
x+=8;
if(x>120){x=0;y+=2;}
j++;
}
}
//显示汉字
void OLED_ShowCHinese(u8 x,u8 y,u8 no)
{
u8 t,adder=0;
OLED_Set_Pos(x,y);
for(t=0;t<16;t++)
{
OLED_WR_Byte(Hzk[2*no][t],OLED_DATA);
adder+=1;
}
OLED_Set_Pos(x,y+1);
for(t=0;t<16;t++)
{
OLED_WR_Byte(Hzk[2*no+1][t],OLED_DATA);
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 OLED_DrawBMP(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_WR_Byte(BMP[j++],OLED_DATA);
}
}
}


//初始化SSD1306
void OLED_Init(void)
{



OLED_RST_Set();
delay_ms(100);
OLED_RST_Clr();
delay_ms(100);
OLED_RST_Set();
/*
OLED_WR_Byte(0xAE,OLED_CMD);//--turn off oled panel
OLED_WR_Byte(0x00,OLED_CMD);//---set low column address
OLED_WR_Byte(0x10,OLED_CMD);//---set high column address
OLED_WR_Byte(0x40,OLED_CMD);//--set start line address Set Mapping RAM Display Start Line (0x00~0x3F)
OLED_WR_Byte(0x81,OLED_CMD);//--set contrast control register
OLED_WR_Byte(0xCF,OLED_CMD); // Set SEG Output Current Brightness
OLED_WR_Byte(0xA1,OLED_CMD);//--Set SEG/Column Mapping 0xa0左右反置 0xa1正常
OLED_WR_Byte(0xC8,OLED_CMD);//Set COM/Row Scan Direction 0xc0上下反置 0xc8正常
OLED_WR_Byte(0xA6,OLED_CMD);//--set normal display
OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)
OLED_WR_Byte(0x3f,OLED_CMD);//--1/64 duty
OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset Shift Mapping RAM Counter (0x00~0x3F)
OLED_WR_Byte(0x00,OLED_CMD);//-not offset
OLED_WR_Byte(0xd5,OLED_CMD);//--set display clock divide ratio/oscillator frequency
OLED_WR_Byte(0x80,OLED_CMD);//--set divide ratio, Set Clock as 100 Frames/Sec
OLED_WR_Byte(0xD9,OLED_CMD);//--set pre-charge period
OLED_WR_Byte(0xF1,OLED_CMD);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
OLED_WR_Byte(0xDA,OLED_CMD);//--set com pins hardware configuration
OLED_WR_Byte(0x12,OLED_CMD);
OLED_WR_Byte(0xDB,OLED_CMD);//--set vcomh
OLED_WR_Byte(0x40,OLED_CMD);//Set VCOM Deselect Level
OLED_WR_Byte(0x20,OLED_CMD);//-Set Page Addressing Mode (0x00/0x01/0x02)
OLED_WR_Byte(0x02,OLED_CMD);//
OLED_WR_Byte(0x8D,OLED_CMD);//--set Charge Pump enable/disable
OLED_WR_Byte(0x14,OLED_CMD);//--set(0x10) disable
OLED_WR_Byte(0xA4,OLED_CMD);// Disable Entire Display On (0xa4/0xa5)
OLED_WR_Byte(0xA6,OLED_CMD);// Disable Inverse Display On (0xa6/a7)
OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panel
*/

OLED_WR_Byte(0xAE,OLED_CMD);//--turn off oled panel
OLED_WR_Byte(0x00,OLED_CMD);//---set low column address
OLED_WR_Byte(0x10,OLED_CMD);//---set high column address
OLED_WR_Byte(0x40,OLED_CMD);//--set start line address Set Mapping RAM Display Start Line (0x00~0x3F)
OLED_WR_Byte(0x81,OLED_CMD);//--set contrast control register
OLED_WR_Byte(0xCF,OLED_CMD); // Set SEG Output Current Brightness
OLED_WR_Byte(0xA1,OLED_CMD);//--Set SEG/Column Mapping 0xa0左右反置 0xa1正常
OLED_WR_Byte(0xC8,OLED_CMD);//Set COM/Row Scan Direction 0xc0上下反置 0xc8正常
OLED_WR_Byte(0xA6,OLED_CMD);//--set normal display
OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)
OLED_WR_Byte(0x3f,OLED_CMD);//--1/64 duty
OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset Shift Mapping RAM Counter (0x00~0x3F)
OLED_WR_Byte(0x00,OLED_CMD);//-not offset
OLED_WR_Byte(0xd5,OLED_CMD);//--set display clock divide ratio/oscillator frequency
OLED_WR_Byte(0x80,OLED_CMD);//--set divide ratio, Set Clock as 100 Frames/Sec
OLED_WR_Byte(0xD9,OLED_CMD);//--set pre-charge period
OLED_WR_Byte(0xF1,OLED_CMD);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
OLED_WR_Byte(0xDA,OLED_CMD);//--set com pins hardware configuration
OLED_WR_Byte(0x12,OLED_CMD);
OLED_WR_Byte(0xDB,OLED_CMD);//--set vcomh
OLED_WR_Byte(0x40,OLED_CMD);//Set VCOM Deselect Level
OLED_WR_Byte(0x20,OLED_CMD);//-Set Page Addressing Mode (0x00/0x01/0x02)
OLED_WR_Byte(0x02,OLED_CMD);//
OLED_WR_Byte(0x8D,OLED_CMD);//--set Charge Pump enable/disable
OLED_WR_Byte(0x14,OLED_CMD);//--set(0x10) disable
OLED_WR_Byte(0xA4,OLED_CMD);// Disable Entire Display On (0xa4/0xa5)
OLED_WR_Byte(0xA6,OLED_CMD);// Disable Inverse Display On (0xa6/a7)
OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panel
OLED_WR_Byte(0xAF,OLED_CMD); /*display ON*/
OLED_Clear();
OLED_Set_Pos(0,0);
}

oled.h
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#include "REG51.h"
#ifndef __OLED_H
#define __OLED_H
//#include "sys.h"
//#include "stdlib.h"
#define u8 unsigned char
#define u16 unsigned int
#define OLED_CMD 0 //写命令
#define OLED_DATA 1 //写数据
#define OLED_MODE 0



sbit OLED_SCL=P1^4;//时钟 D0(SCLK?
sbit OLED_SDIN=P1^3;//D1(MOSI) 数据
sbit OLED_RST =P1^2;//复位
sbit OLED_DC =P1^1;//数据/命令控制
sbit OLED_CS=P1^0; //片选
sbit LED6=P3^3; //发光二极管

#define OLED_CS_Clr() OLED_CS=0
#define OLED_CS_Set() OLED_CS=1

#define OLED_RST_Clr() OLED_RST=0
#define OLED_RST_Set() OLED_RST=1

#define OLED_DC_Clr() OLED_DC=0
#define OLED_DC_Set() OLED_DC=1

#define OLED_SCLK_Clr() OLED_SCL=0
#define OLED_SCLK_Set() OLED_SCL=1

#define OLED_SDIN_Clr() OLED_SDIN=0
#define OLED_SDIN_Set() OLED_SDIN=1;





//OLED模式设置
//0:4线串行模式
//1:并行8080模式

#define SIZE 16
#define XLevelL 0x02
#define XLevelH 0x10
#define Max_Column 128
#define Max_Row 64
#define Brightness 0xFF
#define X_WIDTH 128
#define Y_WIDTH 64
//-----------------OLED端口定义----------------

void delay_ms(unsigned int ms);




//OLED控制用函数
void OLED_WR_Byte(u8 dat,u8 cmd);
void OLED_Display_On(void);
void OLED_Display_Off(void);
void OLED_Init(void);
void OLED_Clear(void);
void OLED_DrawPoint(u8 x,u8 y,u8 t);
void OLED_Fill(u8 x1,u8 y1,u8 x2,u8 y2,u8 dot);
void OLED_ShowChar(u8 x,u8 y,u8 chr);
void OLED_ShowNum(u8 x,u8 y,u16 num,u8 len,u8 size2);
void OLED_ShowString(u8 x,u8 y, u8 *p);
void OLED_Set_Pos(unsigned char x, unsigned char y);
void OLED_ShowCHinese(u8 x,u8 y,u8 no);
void OLED_DrawBMP(unsigned char x0, unsigned char y0,unsigned char x1, unsigned char y1,unsigned char BMP[]);
#endif




oledfont.h
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#ifndef __OLEDFONT_H
#define __OLEDFONT_H
unsigned char code Hzk[][32]={

{0x00,0x80,0x60,0xF8,0x07,0x10,0x10,0x10,0xD0,0xFF,0xD0,0x10,0x10,0x10,0x00,0x00},
{0x01,0x00,0x00,0xFF,0x10,0x08,0x04,0x0B,0x08,0xFF,0x08,0x0B,0x04,0x08,0x10,0x00},/*"体",0*/

{0x80,0x80,0x9E,0x92,0x92,0x92,0x9E,0xE0,0x80,0x9E,0xB2,0xD2,0x92,0x9E,0x80,0x00},
{0x08,0x08,0xF4,0x94,0x92,0x92,0xF1,0x00,0x01,0xF2,0x92,0x94,0x94,0xF8,0x08,0x00},/*"器",1*/

{0x10,0x60,0x02,0x8C,0x00,0x00,0xFE,0x92,0x92,0x92,0x92,0x92,0xFE,0x00,0x00,0x00},
{0x04,0x04,0x7E,0x01,0x40,0x7E,0x42,0x42,0x7E,0x42,0x7E,0x42,0x42,0x7E,0x40,0x00},/*"温",2*/


};

#endif

二、1.3英寸OLED 屏幕与1608HWTW–IIC–例程

主函数main.c
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/***********0.96英寸OLED屏幕与51单片机连接方式*************/
// GND 电源地
// VCC 接5V或3.3v电源
// D0 P0^0(SCL)
// D1 P0^1(SDA)
/***********温感1608HWTW与51单片机连接方式*************/
// GND 电源地
// VCC 接3.3v电源
// RXD P3^1(TXD)
// TXD P3^0(RXD)#include "REG51.h"
#include "oled.h"
#include "bmp.h"
#include "temp.h"

#define u16 unsigned int
#define u8 unsigned char
int a,b,c,d,e,f,g,h;

void delay(u16 i);
void Display();

void delay (u16 i) //延时函数
{
while(i--);
}

int trans1(int temp)
{
a = temp/1000; //第一位数
b = temp%1000/100; //第二位数
c = temp%100/10; //第三位数
d = temp%10; //第四位数
}

int trans2(int temp)
{
e = temp/1000; //第一位数
f = temp%1000/100; //第二位数
g = temp%100/10; //第三位数
h = temp%10; //第四位数
}

void Display() //显示函数,根据温度的变化改变单片机的功能
{
OLED_ShowCHinese(0,0,0);
OLED_ShowCHinese(16,0,2);
OLED_ShowChar(32,0,':',16);
OLED_ShowNum(40,0,a,1,16);
OLED_ShowNum(48,0,b,1,16);
OLED_ShowChar(56,0,'.',16);
OLED_ShowNum(64,0,c,1,16);
OLED_ShowNum(72,0,d,1,16);
OLED_ShowCHinese(0,2,1);
OLED_ShowCHinese(16,2,2);
OLED_ShowChar(32,2,':',16);
OLED_ShowNum(40,2,e,1,16);
OLED_ShowNum(48,2,f,1,16);
OLED_ShowChar(56,2,'.',16);
OLED_ShowNum(64,2,g,1,16);
OLED_ShowNum(72,2,h,1,16);
}

int main(void)
{
u8 t;
InitUART();
OLED_Init(); //初始化OLED
OLED_Clear();
while(1)
{
// OLED_Clear(); //加这个清屏函数会闪屏
SendOneByte();
delay(20000);
trans1(body_temperature()); //数据转换
Display();
trans2(device_temperature());
Display(); //显示函数
}
}


void UARTInterrupt(void) interrupt 4 //串口中断
{
ReceiveOneByte();
}

temp.c和temp.h与上面的并无差别

oled.c
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#include "oled.h"
//#include "stdlib.h"
#include "oledfont.h"
//#include "delay.h"
//OLED的显存
//存放格式如下.
//[0]0 1 2 3 ... 127
//[1]0 1 2 3 ... 127
//[2]0 1 2 3 ... 127
//[3]0 1 2 3 ... 127
//[4]0 1 2 3 ... 127
//[5]0 1 2 3 ... 127
//[6]0 1 2 3 ... 127
//[7]0 1 2 3 ... 127
void delay_ms(unsigned int ms)
{
unsigned int a;
while(ms)
{
a=1800;
while(a--);
ms--;
}
return;
}
/**********************************************
//IIC Start
**********************************************/
void IIC_Start()
{

OLED_SCLK_Set() ;
OLED_SDIN_Set();
OLED_SDIN_Clr();
OLED_SCLK_Clr();
}

/**********************************************
//IIC Stop
**********************************************/
void IIC_Stop()
{
OLED_SCLK_Set() ;
// OLED_SCLK_Clr();
OLED_SDIN_Clr();
OLED_SDIN_Set();

}

void IIC_Wait_Ack()
{

//GPIOB->CRH &= 0XFFF0FFFF; //设置PB12为上拉输入模式
//GPIOB->CRH |= 0x00080000;
// OLED_SDA = 1;
// delay_us(1);
//OLED_SCL = 1;
//delay_us(50000);
/* while(1)
{
if(!OLED_SDA) //判断是否接收到OLED 应答信号
{
//GPIOB->CRH &= 0XFFF0FFFF; //设置PB12为通用推免输出模式
//GPIOB->CRH |= 0x00030000;
return;
}
}
*/
OLED_SCLK_Set() ;
OLED_SCLK_Clr();
}
/**********************************************
// IIC Write byte
**********************************************/

void Write_IIC_Byte(unsigned char IIC_Byte)
{
unsigned char i;
unsigned char m,da;
da=IIC_Byte;
OLED_SCLK_Clr();
for(i=0;i<8;i++)
{
m=da;
// OLED_SCLK_Clr();
m=m&0x80;
if(m==0x80)
{OLED_SDIN_Set();}
else OLED_SDIN_Clr();
da=da<<1;
OLED_SCLK_Set();
OLED_SCLK_Clr();
}


}
/**********************************************
// IIC Write Command
**********************************************/
void Write_IIC_Command(unsigned char IIC_Command)
{
IIC_Start();
Write_IIC_Byte(0x78); //Slave address,SA0=0
IIC_Wait_Ack();
Write_IIC_Byte(0x00); //write command
IIC_Wait_Ack();
Write_IIC_Byte(IIC_Command);
IIC_Wait_Ack();
IIC_Stop();
}
/**********************************************
// IIC Write Data
**********************************************/
void Write_IIC_Data(unsigned char IIC_Data)
{
IIC_Start();
Write_IIC_Byte(0x78); //D/C#=0; R/W#=0
IIC_Wait_Ack();
Write_IIC_Byte(0x40); //write data
IIC_Wait_Ack();
Write_IIC_Byte(IIC_Data);
IIC_Wait_Ack();
IIC_Stop();
}
void OLED_WR_Byte(unsigned dat,unsigned cmd)
{
if(cmd)
{

Write_IIC_Data(dat);

}
else {
Write_IIC_Command(dat);

}


}

/********************************************
// fill_Picture
********************************************/
void fill_picture(unsigned char fill_Data)
{
unsigned char m,n;
for(m=0;m<8;m++)
{
OLED_WR_Byte(0xb0+m,0); //page0-page1
OLED_WR_Byte(0x02,0); //low column start address
OLED_WR_Byte(0x10,0); //high column start address
for(n=0;n<128;n++)
{
OLED_WR_Byte(fill_Data,1);
}
}
}


/***********************Delay****************************************/
void Delay_50ms(unsigned int Del_50ms)
{
unsigned int m;
for(;Del_50ms>0;Del_50ms--)
for(m=6245;m>0;m--);
}

void Delay_1ms(unsigned int Del_1ms)
{
unsigned char j;
while(Del_1ms--)
{
for(j=0;j<123;j++);
}
}

//坐标设置

void OLED_Set_Pos(unsigned char x, unsigned char y)
{
OLED_WR_Byte(0xb0+y,OLED_CMD);
OLED_WR_Byte((((x+2)&0xf0)>>4)|0x10,OLED_CMD);
OLED_WR_Byte(((x+2)&0x0f),OLED_CMD);
}
//开启OLED显示
void OLED_Display_On(void)
{
OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDC命令
OLED_WR_Byte(0X14,OLED_CMD); //DCDC ON
OLED_WR_Byte(0XAF,OLED_CMD); //DISPLAY ON
}
//关闭OLED显示
void OLED_Display_Off(void)
{
OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDC命令
OLED_WR_Byte(0X10,OLED_CMD); //DCDC OFF
OLED_WR_Byte(0XAE,OLED_CMD); //DISPLAY OFF
}
//清屏函数,清完屏,整个屏幕是黑色的!和没点亮一样!!!
void OLED_Clear(void)
{
u8 i,n;
for(i=0;i<8;i++)
{
OLED_WR_Byte (0xb0+i,OLED_CMD); //设置页地址(0~7)
OLED_WR_Byte (0x02,OLED_CMD); //设置显示位置—列低地址
OLED_WR_Byte (0x10,OLED_CMD); //设置显示位置—列高地址
for(n=0;n<128;n++)OLED_WR_Byte(0,OLED_DATA);
} //更新显示
}
void OLED_On(void)
{
u8 i,n;
for(i=0;i<8;i++)
{
OLED_WR_Byte (0xb0+i,OLED_CMD); //设置页地址(0~7)
OLED_WR_Byte (0x02,OLED_CMD); //设置显示位置—列低地址
OLED_WR_Byte (0x10,OLED_CMD); //设置显示位置—列高地址
for(n=0;n<128;n++)OLED_WR_Byte(1,OLED_DATA);
} //更新显示
}
//在指定位置显示一个字符,包括部分字符
//x:0~127
//y:0~63
//mode:0,反白显示;1,正常显示
//size:选择字体 16/12
void OLED_ShowChar(u8 x,u8 y,u8 chr,u8 Char_Size)
{
unsigned char c=0,i=0;
c=chr-' ';//得到偏移后的值
if(x>Max_Column-1){x=0;y=y+2;}
if(Char_Size ==16)
{
OLED_Set_Pos(x,y);
for(i=0;i<8;i++)
OLED_WR_Byte(F8X16[c*16+i],OLED_DATA);
OLED_Set_Pos(x,y+1);
for(i=0;i<8;i++)
OLED_WR_Byte(F8X16[c*16+i+8],OLED_DATA);
}
else {
OLED_Set_Pos(x,y);
for(i=0;i<6;i++)
OLED_WR_Byte(F6x8[c][i],OLED_DATA);

}
}
//m^n函数
u16 oled_pow(u8 m,u8 n)
{
u16
result=1;
while(n--)result*=m;
return result;
}
//显示2个数字
//x,y :起点坐标
//len :数字的位数
//size:字体大小
//mode:模式 0,填充模式;1,叠加模式
//num:数值(0~4294967295);
void OLED_ShowNum(u8 x,u8 y,u16 num,u8 len,u8 size2)
{
u8 t,temp;
u8 enshow=0;
for(t=0;t<len;t++)
{
temp=(num/oled_pow(10,len-t-1))%10;
if(enshow==0&&t<(len-1))
{
if(temp==0)
{
OLED_ShowChar(x+(size2/2)*t,y,' ',size2);
continue;
}else enshow=1;

}
OLED_ShowChar(x+(size2/2)*t,y,temp+'0',size2);
}
}
//显示一个字符号串
void OLED_ShowString(u8 x,u8 y,u8 *chr,u8 Char_Size)
{
unsigned char j=0;
while (chr[j]!='\0')
{ OLED_ShowChar(x,y,chr[j],Char_Size);
x+=8;
if(x>120){x=0;y+=2;}
j++;
}
}
//显示汉字
void OLED_ShowCHinese(u8 x,u8 y,u8 no)
{
u8 t,adder=0;
OLED_Set_Pos(x,y);
for(t=0;t<16;t++)
{
OLED_WR_Byte(Hzk[2*no][t],OLED_DATA);
adder+=1;
}
OLED_Set_Pos(x,y+1);
for(t=0;t<16;t++)
{
OLED_WR_Byte(Hzk[2*no+1][t],OLED_DATA);
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 OLED_DrawBMP(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_WR_Byte(BMP[j++],OLED_DATA);
}
}
}

//初始化SSD1306
void OLED_Init(void)
{

OLED_WR_Byte(0xAE,OLED_CMD);//--display off
OLED_WR_Byte(0x02,OLED_CMD);//---set low column address
OLED_WR_Byte(0x10,OLED_CMD);//---set high column address
OLED_WR_Byte(0x40,OLED_CMD);//--set start line address
OLED_WR_Byte(0xB0,OLED_CMD);//--set page address
OLED_WR_Byte(0x81,OLED_CMD); // contract control
OLED_WR_Byte(0xFF,OLED_CMD);//--128
OLED_WR_Byte(0xA1,OLED_CMD);//set segment remap
OLED_WR_Byte(0xA6,OLED_CMD);//--normal / reverse
OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)
OLED_WR_Byte(0x3F,OLED_CMD);//--1/32 duty
OLED_WR_Byte(0xC8,OLED_CMD);//Com scan direction
OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset
OLED_WR_Byte(0x00,OLED_CMD);//

OLED_WR_Byte(0xD5,OLED_CMD);//set osc division
OLED_WR_Byte(0x80,OLED_CMD);//

OLED_WR_Byte(0xD8,OLED_CMD);//set area color mode off
OLED_WR_Byte(0x05,OLED_CMD);//

OLED_WR_Byte(0xD9,OLED_CMD);//Set Pre-Charge Period
OLED_WR_Byte(0xF1,OLED_CMD);//

OLED_WR_Byte(0xDA,OLED_CMD);//set com pin configuartion
OLED_WR_Byte(0x12,OLED_CMD);//

OLED_WR_Byte(0xDB,OLED_CMD);//set Vcomh
OLED_WR_Byte(0x30,OLED_CMD);//

OLED_WR_Byte(0x8D,OLED_CMD);//set charge pump enable
OLED_WR_Byte(0x14,OLED_CMD);//

OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panel
}
oled.h
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#include "REG51.h"
#ifndef __OLED_H
#define __OLED_H
//#include "sys.h"
//#include "stdlib.h"
#define u8 unsigned char
#define u16 unsigned int
#define OLED_CMD 0 //写命令
#define OLED_DATA 1 //写数据
#define OLED_MODE 0


sbit OLED_SCL=P0^0;//时钟 D0(SCLK?
sbit OLED_SDIN=P0^1;//D1(MOSI) 数据


#define OLED_CS_Clr() OLED_CS=0
#define OLED_CS_Set() OLED_CS=1

#define OLED_RST_Clr() OLED_RST=0
#define OLED_RST_Set() OLED_RST=1

#define OLED_DC_Clr() OLED_DC=0
#define OLED_DC_Set() OLED_DC=1

#define OLED_SCLK_Clr() OLED_SCL=0
#define OLED_SCLK_Set() OLED_SCL=1

#define OLED_SDIN_Clr() OLED_SDIN=0
#define OLED_SDIN_Set() OLED_SDIN=1





//OLED模式设置
//0:4线串行模式
//1:并行8080模式

#define SIZE 16
#define XLevelL 0x02
#define XLevelH 0x10
#define Max_Column 128
#define Max_Row 64
#define Brightness 0xFF
#define X_WIDTH 128
#define Y_WIDTH 64
//-----------------OLED端口定义----------------

void delay_ms(unsigned int ms);


//OLED控制用函数
void OLED_WR_Byte(unsigned dat,unsigned cmd);
void OLED_Display_On(void);
void OLED_Display_Off(void);
void OLED_Init(void);
void OLED_Clear(void);
void OLED_DrawPoint(u8 x,u8 y,u8 t);
void OLED_Fill(u8 x1,u8 y1,u8 x2,u8 y2,u8 dot);
void OLED_ShowChar(u8 x,u8 y,u8 chr,u8 Char_Size);
void OLED_ShowNum(u8 x,u8 y,u16 num,u8 len,u8 size);
void OLED_ShowString(u8 x,u8 y, u8 *p,u8 Char_Size);
void OLED_Set_Pos(unsigned char x, unsigned char y);
void OLED_ShowCHinese(u8 x,u8 y,u8 no);
void OLED_DrawBMP(unsigned char x0, unsigned char y0,unsigned char x1, unsigned char y1,unsigned char BMP[]);
void Delay_50ms(unsigned int Del_50ms);
void Delay_1ms(unsigned int Del_1ms);
void fill_picture(unsigned char fill_Data);
void Picture();
void IIC_Start();
void IIC_Stop();
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 IIC_Wait_Ack();
#endif
oledfont.h
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#ifndef __OLEDFONT_H
#define __OLEDFONT_H
unsigned char code Hzk[][32]={

{0x00,0x80,0x60,0xF8,0x07,0x10,0x10,0x10,0xD0,0xFF,0xD0,0x10,0x10,0x10,0x00,0x00},
{0x01,0x00,0x00,0xFF,0x10,0x08,0x04,0x0B,0x08,0xFF,0x08,0x0B,0x04,0x08,0x10,0x00},/*"体",0*/

{0x80,0x80,0x9E,0x92,0x92,0x92,0x9E,0xE0,0x80,0x9E,0xB2,0xD2,0x92,0x9E,0x80,0x00},
{0x08,0x08,0xF4,0x94,0x92,0x92,0xF1,0x00,0x01,0xF2,0x92,0x94,0x94,0xF8,0x08,0x00},/*"器",1*/

{0x10,0x60,0x02,0x8C,0x00,0x00,0xFE,0x92,0x92,0x92,0x92,0x92,0xFE,0x00,0x00,0x00},
{0x04,0x04,0x7E,0x01,0x40,0x7E,0x42,0x42,0x7E,0x42,0x7E,0x42,0x42,0x7E,0x40,0x00},/*"温",2*/


};

#endif

实现效果

感悟体会