2020年04月07日 | MSP430F149程序移植——0.96OLED（ssd1306驱动）

一、引脚说明

1.1 接口定义

1.2 硬件连接

1.3 总线协议

IO口软件模拟SPI

1.4 软件控制流程

①IO初始化。

②根据时序初始化LCD。

③显示。

二、移植文件

将 oled.c 、 oled.h 、bmp.h文件加入到工程文件夹下

2.1 oled.c

#include "oled.h"

#include "oledfont.h"   

//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();

}

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

u32 oled_pow(u8 m, u8 n)

{

u32 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, u32 num, u8 len, u8 size2)

{

u8 t, temp;

u8 enshow = 0;

for (t = 0; 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] != '')

{

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 {

OLED_Set_Pos(x0, y);

for (x = x0; x {

OLED_WR_Byte(BMP[j++], OLED_DATA);

}

}

}

//初始化SSD1306     

void OLED_Init(void)

{

OLED_SSD1306_SCLK_IO_INIT;

OLED_SSD1306_SDIN_IO_INIT;

OLED_SSD1306_DC_IO_INIT;

OLED_SSD1306_CE_IO_INIT;

OLED_SSD1306_RST_IO_INIT;

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(0xAF, OLED_CMD); /*display ON*/

OLED_Clear();

OLED_Set_Pos(0, 0);

}

//显示一个字符号的首个字符

void LCD_WriteChar(u8 x, u8 y, u8 *chr)

{

if (*chr != '')

{

OLED_ShowChar(x, y, *chr);

}

}

void LCD_WriteStrings(u8 x, u8 y, char *str, u8 Len)

{

u8  i, j, Val_H, Val_L;

u16 Val;

if (Len == 0)

Len = strlen(str);

for (i = 0; i {

Val_H = *(str + i);

if (Val_H >= 0xA1)

{

Val_L = *(str + i + 1);

if (Val_L >= 0xA1)

{

Val = Val_H * 256 + Val_L;

i = i + 1;

for (j = 0; j {

if (ALL_CN_Font[j].ASC_Value == Val) break;

}

if (j == ALL_CN_NUM)   continue;

                                OLED_ShowCHinese(x + 8 * i - 8, y, j);

}

}

else

{

                        LCD_WriteChar(x + 8 * i, y, str + i);

}

}

}

2.oled.h

#ifndef __OLED_H

#define __OLED_H

//              GND    电源地

//              VCC  接5V或3.3v电源

//              D0   P1.3（SCL）

//              D1   P1.4（SDA）

//              RES  接P1.1

//              DC   接P1.2

//              CS   接P1.0 

#include

#include

#include  

#define  u8 unsigned char 

#define  u32 unsigned int 

#define OLED_CMD  0 //写命令

#define OLED_DATA 1 //写数据

#define Set_Bit(val, bitn) (val |= (bitn))

#define Clr_Bit(val, bitn) (val &= ~(bitn))

#define Get_Bit(val, bitn) (val & (1<<(bitn)))

//----------------------------------------------------------------------------------

//OLED SSD1306 SPI  时钟D0

//#define OLED_SSD1306_SCLK_DIR (P1DIR)

//#define OLED_SSD1306_SCLK_OUT (P1OUT)

#define OLED_SSD1306_SCLK_PIN_NUM (BIT3)

#define OLED_SSD1306_SCLK_IO_INIT (Set_Bit(P1DIR,OLED_SSD1306_SCLK_PIN_NUM))

#define OLED_SCLK_Set()         (Set_Bit(P1OUT,OLED_SSD1306_SCLK_PIN_NUM))

#define OLED_SCLK_Clr() (Clr_Bit(P1OUT,OLED_SSD1306_SCLK_PIN_NUM))

//----------------------------------------------------------------------------------

//OLED SSD1306 SPI 数据D1

//#define OLED_SSD1306_SDIN_DIR (P1DIR)

//#define OLED_SSD1306_SDIN_OUT (P1OUT)

#define OLED_SSD1306_SDIN_PIN_NUM (BIT4)

#define OLED_SSD1306_SDIN_IO_INIT (Set_Bit(P1DIR,OLED_SSD1306_SDIN_PIN_NUM))

#define OLED_SDIN_Set() (Set_Bit(P1OUT,OLED_SSD1306_SDIN_PIN_NUM))

#define OLED_SDIN_Clr()         (Clr_Bit(P1OUT,OLED_SSD1306_SDIN_PIN_NUM))

//----------------------------------------------------------------------------------

//OLED SSD1306 数据/命令DC

//#define OLED_SSD1306_DC_DIR (P1DIR)

//#define OLED_SSD1306_DC_OUT (P1OUT)

#define OLED_SSD1306_DC_PIN_NUM (BIT2)

#define OLED_SSD1306_DC_IO_INIT (Set_Bit(P1DIR,OLED_SSD1306_DC_PIN_NUM))

#define OLED_DC_Set() (Set_Bit(P1OUT,OLED_SSD1306_DC_PIN_NUM))

#define OLED_DC_Clr() (Clr_Bit(P1OUT,OLED_SSD1306_DC_PIN_NUM))

//----------------------------------------------------------------------------------

//OLED SSD1306 片选CS

//#define OLED_SSD1306_CE_DIR (P1DIR)

//#define OLED_SSD1306_CE_OUT (P1OUT)

#define OLED_SSD1306_CE_PIN_NUM (BIT0)

#define OLED_SSD1306_CE_IO_INIT (Set_Bit(P1DIR,OLED_SSD1306_CE_PIN_NUM))

#define OLED_CS_Set() (Set_Bit(P1OUT,OLED_SSD1306_CE_PIN_NUM))

#define OLED_CS_Clr() (Clr_Bit(P1OUT,OLED_SSD1306_CE_PIN_NUM))

//----------------------------------------------------------------------------------

//OLED SSD1306 复位/RES

//#define OLED_SSD1306_RST_DIR (P1DIR)

//#define OLED_SSD1306_RST_OUT (P1OUT)

#define OLED_SSD1306_RST_PIN_NUM (BIT1)

#define OLED_SSD1306_RST_IO_INIT (Set_Bit(P1DIR,OLED_SSD1306_RST_PIN_NUM))

#define OLED_RST_Set() (Set_Bit(P1OUT,OLED_SSD1306_RST_PIN_NUM))

#define OLED_RST_Clr() (Clr_Bit(P1OUT,OLED_SSD1306_RST_PIN_NUM))

#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----------------     

#define CPU_F ((double)12000000)        //延时函数所需时钟频率/Hz