本文主要是介绍OLED 0.96寸显示屏 （STM32 HAL库），希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
芯片：STM32L452RE
通信方式：IIC
1. STM32CubeMX配置
配置好芯片是时钟系统以及IIC引脚（IIC使用默认配置就好）
最后生成MDK5 工程
2.程序编写
#####注：此程序由标准库 F103芯片系列程序改写而来#####
oled.c
#include "oled.h"
#include "i2c.h"
#include "oledfont.h"
//初始化命令
uint8_t CMD_Data[]={
0xAE, 0x00, 0x10, 0x40, 0xB0, 0x81, 0xFF, 0xA1, 0xA6, 0xA8, 0x3F,0xC8, 0xD3, 0x00, 0xD5, 0x80, 0xD8, 0x05, 0xD9, 0xF1, 0xDA, 0x12,0xD8, 0x30, 0x8D, 0x14, 0xAF};
void WriteCmd()
{uint8_t i = 0;for(i=0; i<27; i++){HAL_I2C_Mem_Write(&hi2c1 ,0x78,0x00,I2C_MEMADD_SIZE_8BIT,CMD_Data+i,1,0x100);}
}
//向设备写控制命令
void OLED_WR_CMD(uint8_t cmd)
{HAL_I2C_Mem_Write(&hi2c1 ,0x78,0x00,I2C_MEMADD_SIZE_8BIT,&cmd,1,0x100);
}
//向设备写数据
void OLED_WR_DATA(uint8_t data)
{HAL_I2C_Mem_Write(&hi2c1 ,0x78,0x40,I2C_MEMADD_SIZE_8BIT,&data,1,0x100);
}
//初始化oled屏幕
void OLED_Init(void)
{ HAL_Delay(200);WriteCmd();
}
//清屏
void OLED_Clear()
{uint8_t i,n; for(i=0;i<8;i++) { OLED_WR_CMD(0xb0+i);OLED_WR_CMD (0x00); OLED_WR_CMD (0x10); for(n=0;n<128;n++)OLED_WR_DATA(0);}
}
//开启OLED显示
void OLED_Display_On(void)
{OLED_WR_CMD(0X8D); //SET DCDC命令OLED_WR_CMD(0X14); //DCDC ONOLED_WR_CMD(0XAF); //DISPLAY ON
}
//关闭OLED显示
void OLED_Display_Off(void)
{OLED_WR_CMD(0X8D); //SET DCDC命令OLED_WR_CMD(0X10); //DCDC OFFOLED_WR_CMD(0XAE); //DISPLAY OFF
}
void OLED_Set_Pos(uint8_t x, uint8_t y)
{ OLED_WR_CMD(0xb0+y);OLED_WR_CMD(((x&0xf0)>>4)|0x10);OLED_WR_CMD(x&0x0f);
} void OLED_On(void)
{ uint8_t i,n; for(i=0;i<8;i++) { OLED_WR_CMD(0xb0+i); //设置页地址（0~7）OLED_WR_CMD(0x00); //设置显示位置—列低地址OLED_WR_CMD(0x10); //设置显示位置—列高地址 for(n=0;n<128;n++)OLED_WR_DATA(1); } //更新显示
}
unsigned int oled_pow(uint8_t m,uint8_t n)
{unsigned int 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(uint8_t x,uint8_t y,unsigned int 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){OLED_ShowChar(x+(size2/2)*t,y,' ',size2);continue;}else enshow=1; }OLED_ShowChar(x+(size2/2)*t,y,temp+'0',size2); }
}
//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(uint8_t x,uint8_t y,uint8_t chr,uint8_t Char_Size)
{ unsigned char c=0,i=0; c=chr-' ';//得到偏移后的值 if(x>128-1){x=0;y=y+2;}if(Char_Size ==16){OLED_Set_Pos(x,y); for(i=0;i<8;i++)OLED_WR_DATA(F8X16[c*16+i]);OLED_Set_Pos(x,y+1);for(i=0;i<8;i++)OLED_WR_DATA(F8X16[c*16+i+8]);}else { OLED_Set_Pos(x,y);for(i=0;i<6;i++)OLED_WR_DATA(F6x8[c][i]);}
}//显示一个字符号串
void OLED_ShowString(uint8_t x,uint8_t y,uint8_t *chr,uint8_t 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
//hzk 用取模软件得出的数组
void OLED_ShowCHinese(uint8_t x,uint8_t y,uint8_t no)
{ uint8_t t,adder=0;OLED_Set_Pos(x,y); for(t=0;t<16;t++){OLED_WR_DATA(Hzk[2*no][t]);adder+=1;} OLED_Set_Pos(x,y+1); for(t=0;t<16;t++){ OLED_WR_DATA(Hzk[2*no+1][t]);adder+=1;}
}
main.c
/* USER CODE BEGIN 2 */OLED_Init();OLED_Clear(); OLED_ShowString(0,0,"123456",16);OLED_ShowCHinese(54,4,0);//OLED_ShowCHinese(72,4,1);//OLED_ShowCHinese(90,4,2);//OLED_ShowCHinese(108,4,3);///* USER CODE END 2 */
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