1、OLED的型号为7针SPI接口
2、cubeMX的设置
（1）GPIO设置
需要注意的是，OLED的五个引脚是普通的IO口来模拟SPI通信，而不是真的用到了单片机的SPI模块。
（2）时钟设置
最后生成代码。
3、打开工程代码
（1）添加OledDev.h头文件到工程中，程序代码如下：
#ifndef _OLEDDEV_H_
#define _OLEDDEV_H_#include "main.h"//-----------------测试LED端口定义---------------- //-----------------OLED端口定义---------------- /* 控制SCL端口状态 */
#define OLED_SCLK_CTRL(X) (X)? HAL_GPIO_WritePin(OLED_SCLK_GPIO_Port,OLED_SCLK_Pin,GPIO_PIN_SET):HAL_GPIO_WritePin(OLED_SCLK_GPIO_Port,OLED_SCLK_Pin,GPIO_PIN_RESET)
/* 控制DC端口状态 */
#define OLED_DC_CTRL(X) (X)? HAL_GPIO_WritePin(OLED_DC_GPIO_Port,OLED_DC_Pin,GPIO_PIN_SET):HAL_GPIO_WritePin(OLED_DC_GPIO_Port,OLED_DC_Pin,GPIO_PIN_RESET)
/* 控制CS端口状态 */
#define OLED_CS_CTRL(X) (X)? HAL_GPIO_WritePin(OLED_CS_GPIO_Port,OLED_CS_Pin,GPIO_PIN_SET):HAL_GPIO_WritePin(OLED_CS_GPIO_Port,OLED_CS_Pin,GPIO_PIN_RESET)
/* 控制CS端口状态 */
#define OLED_SDIN_CTRL(X) (X)? HAL_GPIO_WritePin(OLED_SDIN_GPIO_Port,OLED_SDIN_Pin,GPIO_PIN_SET):HAL_GPIO_WritePin(OLED_SDIN_GPIO_Port,OLED_SDIN_Pin,GPIO_PIN_RESET)
/* 控制RST端口状态 */
#define OLED_RST_CTRL(X) (X)? HAL_GPIO_WritePin(OLED_RST_GPIO_Port,OLED_RST_Pin,GPIO_PIN_SET):HAL_GPIO_WritePin(OLED_RST_GPIO_Port,OLED_RST_Pin,GPIO_PIN_RESET)#define OLED_RST_Clr() OLED_RST_CTRL(0)/* 拉低SCL为低电平 */
#define OLED_RST_Set() OLED_RST_CTRL(1)/* 拉低SCL为高电平 */#define OLED_SCLK_Clr() OLED_SCLK_CTRL(0)/* 拉低SCL为低电平 */
#define OLED_SCLK_Set() OLED_SCLK_CTRL(1)/* 拉低SCL为高电平 */#define OLED_SDIN_Clr() OLED_SDIN_CTRL(0)
#define OLED_SDIN_Set() OLED_SDIN_CTRL(1)#define OLED_DC_Clr() OLED_DC_CTRL(0)//DC
#define OLED_DC_Set() OLED_DC_CTRL(1)#define OLED_CS_Clr() OLED_CS_CTRL(0)//CS
#define OLED_CS_Set() OLED_CS_CTRL(1)#define OLED_CMD 0 //写命令
#define OLED_DATA 1 //写数据
#define u8 unsigned char
#define uint32_t unsigned intextern uint32_t delay_cont;void OLED_ClearPoint(uint8_t x,uint8_t y);
void OLED_ColorTurn(uint8_t i);
void OLED_DisplayTurn(uint8_t i);
void OLED_WR_Byte(uint8_t dat,uint8_t cmd);
void OLED_DisPlay_On(void);
void OLED_DisPlay_Off(void);
void OLED_Refresh(void);
void OLED_Clear(void);
void OLED_DrawPoint(uint8_t x,uint8_t y);
void OLED_DrawLine(uint8_t x1,uint8_t y1,uint8_t x2,uint8_t y2);
void OLED_DrawCircle(uint8_t x,uint8_t y,uint8_t r);
void OLED_ShowChar(uint8_t x,uint8_t y,uint8_t chr,uint8_t size1);
void OLED_ShowString(uint8_t x,uint8_t y,uint8_t *chr,uint8_t size1);
void OLED_ShowNum(uint8_t x,uint8_t y,uint32_t num,uint8_t len,uint8_t size1);
void OLED_ShowChinese(uint8_t x,uint8_t y,uint8_t num,uint8_t size1);
void OLED_ScrollDisplay(uint8_t num,uint8_t space);
void OLED_WR_BP(uint8_t x,uint8_t y);
void OLED_ShowPicture(uint8_t x0,uint8_t y0,uint8_t x1,uint8_t y1,uint8_t BMP[]);
void OLED_Init(void);#endif
（2）添加OledDev.C文件
#include "OledDev.h"
#include "oledfont.h"uint32_t delay_cont;uint8_t OLED_GRAM[144][8];//反显函数
void OLED_ColorTurn(uint8_t i)
{if(i==0){OLED_WR_Byte(0xA6,OLED_CMD);//正常显示}if(i==1){OLED_WR_Byte(0xA7,OLED_CMD);//反色显示}
}//屏幕旋转180度
void OLED_DisplayTurn(uint8_t i)
{if(i==0){OLED_WR_Byte(0xC8,OLED_CMD);//正常显示OLED_WR_Byte(0xA1,OLED_CMD);}if(i==1){OLED_WR_Byte(0xC0,OLED_CMD);//反转显示OLED_WR_Byte(0xA0,OLED_CMD);}
}void OLED_WR_Byte(uint8_t dat,uint8_t cmd)
{ uint8_t i; if(cmd)OLED_DC_Set();elseOLED_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();
}//开启OLED显示
void OLED_DisPlay_On(void)
{OLED_WR_Byte(0x8D,OLED_CMD);//电荷泵使能OLED_WR_Byte(0x14,OLED_CMD);//开启电荷泵OLED_WR_Byte(0xAF,OLED_CMD);//点亮屏幕
}//关闭OLED显示
void OLED_DisPlay_Off(void)
{OLED_WR_Byte(0x8D,OLED_CMD);//电荷泵使能OLED_WR_Byte(0x10,OLED_CMD);//关闭电荷泵OLED_WR_Byte(0xAF,OLED_CMD);//关闭屏幕
}//更新显存到OLED
void OLED_Refresh(void)
{uint8_t i,n;for(i=0;i<8;i++){OLED_WR_Byte(0xb0+i,OLED_CMD); //设置行起始地址OLED_WR_Byte(0x00,OLED_CMD); //设置低列起始地址OLED_WR_Byte(0x10,OLED_CMD); //设置高列起始地址for(n=0;n<128;n++)OLED_WR_Byte(OLED_GRAM[n][i],OLED_DATA);}
}
//清屏函数
void OLED_Clear(void)
{uint8_t i,n;for(i=0;i<8;i++){for(n=0;n<128;n++){OLED_GRAM[n][i]=0;//清除所有数据}}OLED_Refresh();//更新显示
}//画点
//x:0~127
//y:0~63
void OLED_DrawPoint(uint8_t x,uint8_t y)
{uint8_t i,m,n;i=y/8;m=y%8;n=1<<m;OLED_GRAM[x][i]|=n;
}//清除一个点
//x:0~127
//y:0~63
void OLED_ClearPoint(uint8_t x,uint8_t y)
{uint8_t i,m,n;i=y/8;m=y%8;n=1<<m;OLED_GRAM[x][i]=~OLED_GRAM[x][i];OLED_GRAM[x][i]|=n;OLED_GRAM[x][i]=~OLED_GRAM[x][i];
}//画线
//x:0~128
//y:0~64
void OLED_DrawLine(uint8_t x1,uint8_t y1,uint8_t x2,uint8_t y2)
{uint8_t i,k,k1,k2;if((x1<0)||(x2>128)||(y1<0)||(y2>64)||(x1>x2)||(y1>y2))return;if(x1==x2) //画竖线{for(i=0;i<(y2-y1);i++){OLED_DrawPoint(x1,y1+i);}}else if(y1==y2) //画横线{for(i=0;i<(x2-x1);i++){OLED_DrawPoint(x1+i,y1);}}else //画斜线{k1=y2-y1;k2=x2-x1;k=k1*10/k2;for(i=0;i<(x2-x1);i++){OLED_DrawPoint(x1+i,y1+i*k/10);}}
}
//x,y:圆心坐标
//r:圆的半径
void OLED_DrawCircle(uint8_t x,uint8_t y,uint8_t r)
{int a, b,num;a = 0;b = r;while(2 * b * b >= r * r) {OLED_DrawPoint(x + a, y - b);OLED_DrawPoint(x - a, y - b);OLED_DrawPoint(x - a, y + b);OLED_DrawPoint(x + a, y + b);OLED_DrawPoint(x + b, y + a);OLED_DrawPoint(x + b, y - a);OLED_DrawPoint(x - b, y - a);OLED_DrawPoint(x - b, y + a);a++;num = (a * a + b * b) - r*r;//计算画的点离圆心的距离if(num > 0){b--;a--;}}
}//在指定位置显示一个字符,包括部分字符
//x:0~127
//y:0~63
//size:选择字体 12/16/24
//取模方式 逐列式
void OLED_ShowChar(uint8_t x,uint8_t y,uint8_t chr,uint8_t size1)
{uint8_t i,m,temp,size2,chr1;uint8_t y0=y;size2=(size1/8+((size1%8)?1:0))*(size1/2); //得到字体一个字符对应点阵集所占的字节数chr1=chr-' '; //计算偏移后的值for(i=0;i<size2;i++){if(size1==12){temp=asc2_1206[chr1][i];} //调用1206字体else if(size1==16){temp=asc2_1608[chr1][i];} //调用1608字体else if(size1==24){temp=asc2_2412[chr1][i];} //调用2412字体else return;for(m=0;m<8;m++) //写入数据{if(temp&0x80)OLED_DrawPoint(x,y);else OLED_ClearPoint(x,y);temp<<=1;y++;if((y-y0)==size1){y=y0;x++;break;}}}
}//显示字符串
//x,y:起点坐标
//size1:字体大小
//*chr:字符串起始地址
void OLED_ShowString(uint8_t x,uint8_t y,uint8_t *chr,uint8_t size1)
{while((*chr>=' ')&&(*chr<='~'))//判断是不是非法字符!{OLED_ShowChar(x,y,*chr,size1);x+=size1/2;if(x>128-size1) //换行{x=0;y+=2;}chr++;}
}//m^n
uint32_t OLED_Pow(uint8_t m,uint8_t n)
{uint32_t 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
void OLED_ShowNum(uint8_t x,uint8_t y,uint32_t num,uint8_t len,uint8_t size1)
{uint8_t t,temp;for(t=0;t<len;t++){temp=(num/OLED_Pow(10,len-t-1))%10;if(temp==0){OLED_ShowChar(x+(size1/2)*t,y,'0',size1);}else {OLED_ShowChar(x+(size1/2)*t,y,temp+'0',size1);}}
}//显示汉字
//x,y:起点坐标
//num:汉字对应的序号
//取模方式 列行式
void OLED_ShowChinese(uint8_t x,uint8_t y,uint8_t num,uint8_t size1)
{uint8_t i,m,n=0,temp,chr1;uint8_t x0=x,y0=y;uint8_t size3=size1/8;while(size3--){chr1=num*size1/8+n;n++;for(i=0;i<size1;i++){if(size1==16){temp=Hzk1[chr1][i];}//调用16*16字体else if(size1==24){temp=Hzk2[chr1][i];}//调用24*24字体else if(size1==32) {temp=Hzk3[chr1][i];}//调用32*32字体else if(size1==64){temp=Hzk4[chr1][i];}//调用64*64字体else return;for(m=0;m<8;m++){if(temp&0x01)OLED_DrawPoint(x,y);else OLED_ClearPoint(x,y);temp>>=1;y++;}x++;if((x-x0)==size1){x=x0;y0=y0+8;}y=y0;}}
}//num 显示汉字的个数
//space 每一遍显示的间隔
void OLED_ScrollDisplay(uint8_t num,uint8_t space)
{uint8_t i,n,t=0,m=0,r;while(1){if(m==0){OLED_ShowChinese(128,24,t,16); //写入一个汉字保存在OLED_GRAM[][]数组中t++;}if(t==num){for(r=0;r<16*space;r++) //显示间隔{for(i=0;i<144;i++){for(n=0;n<8;n++){OLED_GRAM[i-1][n]=OLED_GRAM[i][n];}}OLED_Refresh();}t=0;}m++;if(m==16){m=0;}for(i=0;i<144;i++) //实现左移{for(n=0;n<8;n++){OLED_GRAM[i-1][n]=OLED_GRAM[i][n];}}OLED_Refresh();}
}//配置写入数据的起始位置
void OLED_WR_BP(uint8_t x,uint8_t y)
{OLED_WR_Byte(0xb0+y,OLED_CMD);//设置行起始地址OLED_WR_Byte(((x&0xf0)>>4)|0x10,OLED_CMD);OLED_WR_Byte((x&0x0f),OLED_CMD);
}//x0,y0：起点坐标
//x1,y1：终点坐标
//BMP[]：要写入的图片数组
void OLED_ShowPicture(uint8_t x0,uint8_t y0,uint8_t x1,uint8_t y1,uint8_t BMP[])
{uint32_t j=0;uint8_t x=0,y=0;if(y%8==0)y=0;else y+=1;for(y=y0;y<y1;y++){OLED_WR_BP(x0,y);for(x=x0;x<x1;x++){OLED_WR_Byte(BMP[j],OLED_DATA);j++;}}
}/*
void HAL_Delay(uint32_t dela_ms)
{delay_cont=0;while(delay_cont < dela_ms){delay_cont++;}
}
*///OLED的初始化
void OLED_Init(void)
{OLED_RST_Clr();//复位HAL_Delay(200);OLED_RST_Set();OLED_WR_Byte(0xAE,OLED_CMD);//--turn off oled panelOLED_WR_Byte(0x00,OLED_CMD);//---set low column addressOLED_WR_Byte(0x10,OLED_CMD);//---set high column addressOLED_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 registerOLED_WR_Byte(0xCF,OLED_CMD);// Set SEG Output Current BrightnessOLED_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 displayOLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)OLED_WR_Byte(0x3f,OLED_CMD);//--1/64 dutyOLED_WR_Byte(0xD3,OLED_CMD);//-set display offset Shift Mapping RAM Counter (0x00~0x3F)OLED_WR_Byte(0x00,OLED_CMD);//-not offsetOLED_WR_Byte(0xd5,OLED_CMD);//--set display clock divide ratio/oscillator frequencyOLED_WR_Byte(0x80,OLED_CMD);//--set divide ratio, Set Clock as 100 Frames/SecOLED_WR_Byte(0xD9,OLED_CMD);//--set pre-charge periodOLED_WR_Byte(0xF1,OLED_CMD);//Set Pre-Charge as 15 Clocks & Discharge as 1 ClockOLED_WR_Byte(0xDA,OLED_CMD);//--set com pins hardware configurationOLED_WR_Byte(0x12,OLED_CMD);OLED_WR_Byte(0xDB,OLED_CMD);//--set vcomhOLED_WR_Byte(0x40,OLED_CMD);//Set VCOM Deselect LevelOLED_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/disableOLED_WR_Byte(0x14,OLED_CMD);//--set(0x10) disableOLED_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);OLED_Clear();
}（3）最后在main函数中调用OLED初始化函数和显示函数即可
int main(void)
{/* USER CODE BEGIN 1 *//* USER CODE END 1 *//* MCU Configuration--------------------------------------------------------*//* Reset of all peripherals, Initializes the Flash interface and the Systick. */HAL_Init();/* USER CODE BEGIN Init *//* USER CODE END Init *//* Configure the system clock */SystemClock_Config();/* USER CODE BEGIN SysInit *//* USER CODE END SysInit *//* Initialize all configured peripherals */MX_GPIO_Init();MX_SPI1_Init();/* USER CODE BEGIN 2 */OLED_Init();
/* OLED_ShowString(0,0,(uint8_t *)"2021-12-27 17:12 63%",12);OLED_ShowString(0,15,(uint8_t *)"CH4:13% CO:6% ",16);OLED_ShowChinese(0,30,0,16); //0 负OLED_ShowChinese(16,30,1,16); //1 压OLED_ShowString(30,30,(uint8_t *)":1.2",16);OLED_ShowChinese(64,30,2,16); //2 温OLED_ShowChinese(80,30,3,16); //3 度OLED_ShowString(94,30,(uint8_t *)":13",16);OLED_ShowString(0,45,(uint8_t *)"000-000-0000 R",16);OLED_Refresh();
*/OLED_ShowString(0,15,(uint8_t *)"cardID:",16);OLED_Refresh();/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1)