OLED，即有機發(fā)光二極管（ Organic Light Emitting Diode ）。 OLED 由于同時具備自發(fā)光，不需背光源、對比度高、厚度薄、視角廣、反應(yīng)速度快、可用于撓曲性面板、使用溫度范圍廣、構(gòu)造及制程較簡單等優(yōu)異之特性，被認(rèn)為是下一代的平面顯示器新興應(yīng)用技術(shù)。
LCD 都需要背光，而 OLED 不需要，因為它是自發(fā)光的。這樣同樣的顯示 OLED 效果要來得好一些。以目前的技術(shù)，OLED 的尺寸還難以大型化，但是分辨率確可以做到很高。
分辨率：128*64
驅(qū)動方式：SPI/IIC，以下程序是IO口模擬IIC通信。
#ifndef __OLED_H
#define __OLED_H
typedef signed char int8_t;
typedef signed short int int16_t;
typedef signed int int32_t;
typedef signed __int64 int64_t;
/* exact-width unsigned integer types */
typedef unsigned char uint8_t;
typedef unsigned short int uint16_t;
typedef unsigned int uint32_t;
typedef unsigned int size_t;
typedef unsigned __int64 uint64_t;
#define OLED_SCL_PORT GPIOA
#define OLED_SCL_PIN GPIO_Pin_5
#define OLED_SCL_CONFIG() GPIOConfig(OLED_SCL_PORT, OLED_SCL_PIN, GPIO_Mode_Out_PP)
#define OLED_SCL_LOW() GPIO_ResetBits(OLED_SCL_PORT, OLED_SCL_PIN) // SCL
#define OLED_SCL_HIGH() GPIO_SetBits(OLED_SCL_PORT, OLED_SCL_PIN)
#define OLED_SDA_PORT GPIOA
#define OLED_SDA_PIN GPIO_Pin_7
#define OLED_SDA_CONFIG() GPIOConfig(OLED_SDA_PORT, OLED_SDA_PIN, GPIO_Mode_Out_PP)
#define OLED_SDA_LOW() GPIO_ResetBits(OLED_SDA_PORT, OLED_SDA_PIN) // SDA
#define OLED_SDA_HIGH() GPIO_SetBits(OLED_SDA_PORT, OLED_SDA_PIN)
#define OLED_RES_PORT GPIOA
#define OLED_RES_PIN GPIO_Pin_6
#define OLED_RES_CONFIG() GPIOConfig(OLED_RES_PORT, OLED_RES_PIN, GPIO_Mode_Out_PP)
#define OLED_RES_LOW() GPIO_ResetBits(OLED_RES_PORT, OLED_RES_PIN) // RES
#define OLED_RES_HIGH() GPIO_SetBits(OLED_RES_PORT, OLED_RES_PIN)
#define OLED_MODE 0
#define SIZE 8
#define XLevelL 0x00
#define XLevelH 0x10
#define Max_Column 128
#define Max_Row 64
#define Brightness 0xFF
#define X_WIDTH 128
#define Y_WIDTH 64
#define OLED_CMD 0 //寫命令
#define OLED_DATA 1 //寫數(shù)據(jù)
void IICStart(void);
void IICStop(void);
void I2CWriteCmd(uint8_t cmd);
void I2CWriteData(uint8_t data);
void I2CWriteByte(uint8_t byte);
void I2CWaitAck(void);
//OLED控制用函數(shù)
void OLEDWriteByte(uint8_t dat,uint8_t cmd);
void OLEDDisplayOn(void);
void OLEDDisplayOff(void);
void OLEDInit(void);
void OLEDClear(void);
void OLEDDrawPoint(uint8_t x,uint8_t y,uint8_t t);
void OLEDFill(uint8_t x1,uint8_t y1,uint8_t x2,uint8_t y2,uint8_t dot);
void OLEDShowChar(uint8_t x,uint8_t y,uint8_t chr,uint8_t Char_Size);
void OLEDShowNum(uint8_t x,uint8_t y,uint32_t num,uint8_t len,uint8_t size);
void OLEDShowString(uint8_t x,uint8_t y, uint8_t *p,uint8_t Char_Size);
void OLEDSetPos(uint8_t x, uint8_t y);
void OLEDShowCHinese(uint8_t x,uint8_t y,uint8_t no);
void OLEDDrawBMP(uint8_t x0, uint8_t y0,uint8_t x1,uint8_t y1,uint8_t BMP[]);
#endif
#include "oled.h"
#include "stdlib.h"
#include "oledfont.h"
void IICStart(void)
{
OLED_SCL_HIGH() ;
OLED_SDA_HIGH();
OLED_SDA_LOW();
OLED_SCL_LOW();
}
void IICStop(void)
{
OLED_SCL_HIGH() ;
OLED_SDA_LOW();
OLED_SDA_HIGH();
}
void I2CWaitAck(void)
{
OLED_SCL_HIGH() ;
OLED_SCL_LOW();
}
void I2CWriteByte(uint8_t byte)
{
uint8_t i;
uint8_t m, data;
data = byte;
OLED_SCL_LOW();
for(i = 0; i < 8; i++)
{
m = data;
m = m & 0x80;
if(m == 0x80)
{
OLED_SDA_HIGH();
}
else
{
OLED_SDA_LOW();
}
data = data << 1;
OLED_SCL_HIGH();
OLED_SCL_LOW();
}
}
void I2CWriteCmd(uint8_t cmd)
{
IICStart();
I2CWriteByte(0x78); //Slave address,SA0=0
I2CWaitAck();
I2CWriteByte(0x00); //write command
I2CWaitAck();
I2CWriteByte(cmd);
I2CWaitAck();
IICStop();
}
void I2CWriteData(uint8_t data)
{
IICStart();
I2CWriteByte(0x78); //D/C#=0; R/W#=0
I2CWaitAck();
I2CWriteByte(0x40); //write data
I2CWaitAck();
I2CWriteByte(data);
I2CWaitAck();
IICStop();
}
void OLEDWriteByte(uint8_t dat, uint8_t cmd)
{
if(cmd)
{
I2CWriteData(dat);
}
else
{
I2CWriteCmd(dat);
}
}
//坐標(biāo)設(shè)置
void OLEDSetPos(uint8_t x, uint8_t y)
{
OLEDWriteByte(0xb0 + y, OLED_CMD);
OLEDWriteByte(((x & 0xf0) >> 4) | 0x10, OLED_CMD);
OLEDWriteByte((x & 0x0f), OLED_CMD);
}
//開啟OLED顯示
void OLEDDisplayOn(void)
{
OLEDWriteByte(0X8D, OLED_CMD); //SET DCDC命令
OLEDWriteByte(0X14, OLED_CMD); //DCDC ON
OLEDWriteByte(0XAF, OLED_CMD); //DISPLAY ON
}
//關(guān)閉OLED顯示
void OLEDDisplayOff(void)
{
OLEDWriteByte(0X8D, OLED_CMD); //SET DCDC命令
OLEDWriteByte(0X10, OLED_CMD); //DCDC OFF
OLEDWriteByte(0XAE, OLED_CMD); //DISPLAY OFF
}
//清屏函數(shù),清完屏,整個屏幕是黑色的!和沒點亮一樣!!!
void OLEDClear(void)
{
uint8_t i, n;
for(i = 0; i < 8; i++)
{
OLEDWriteByte (0xb0 + i, OLED_CMD); //設(shè)置頁地址（0~7）
OLEDWriteByte (0x00, OLED_CMD); //設(shè)置顯示位置—列低地址
OLEDWriteByte (0x10, OLED_CMD); //設(shè)置顯示位置—列高地址
for(n = 0; n < 128; n++)
{
OLEDWriteByte(0, OLED_DATA);
}
} //更新顯示
}
void OLED_On(void)
{
uint8_t i, n;
for(i = 0; i < 8; i++)
{
OLEDWriteByte (0xb0 + i, OLED_CMD); //設(shè)置頁地址（0~7）
OLEDWriteByte (0x00, OLED_CMD); //設(shè)置顯示位置—列低地址
OLEDWriteByte (0x10, OLED_CMD); //設(shè)置顯示位置—列高地址
for(n = 0; n < 128; n++)
{
OLEDWriteByte(1, OLED_DATA);
}
} //更新顯示
}
//在指定位置顯示一個字符,包括部分字符
//x:0~127
//y:0~63
//mode:0,反白顯示;1,正常顯示
//size:選擇字體 16/12
void OLEDShowChar(uint8_t x, uint8_t y, uint8_t chr, uint8_t Char_Size)
{
uint8_t 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)
{
OLEDSetPos(x, y);
for(i = 0; i < 8; i++)
{
OLEDWriteByte(F8X16[c * 16 + i], OLED_DATA);
}
OLEDSetPos(x, y + 1);
for(i = 0; i < 8; i++)
{
OLEDWriteByte(F8X16[c * 16 + i + 8], OLED_DATA);
}
}
else
{
OLEDSetPos(x, y);
for(i = 0; i < 6; i++)
{
OLEDWriteByte(F6x8[c][i], OLED_DATA);
}
}
}
//m^n函數(shù)
uint32_t oled_pow(uint8_t m, uint8_t n)
{
uint32_t result = 1;
while(n--)
{
result *= m;
}
return result;
}
//顯示2個數(shù)字
//x,y :起點坐標(biāo)
//len :數(shù)字的位數(shù)
//size:字體大小
//mode:模式 0,填充模式;1,疊加模式
//num:數(shù)值(0~4294967295);
void OLEDShowNum(uint8_t x, uint8_t y, uint32_t num, uint8_t len, uint8_t size2)
{
uint8_t t, temp;
uint8_t 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)
{
OLEDShowChar(x + (size2 / 2)*t, y, ' ', size2);
continue;
}
else
{
enshow = 1;
}
}
OLEDShowChar(x + (size2 / 2)*t, y, temp + '0', size2);
}
}
//顯示一個字符號串
void OLEDShowString(uint8_t x, uint8_t y, uint8_t *chr, uint8_t Char_Size)
{
uint8_t j = 0;
while (chr[j] != '