基于STM32F103系列控制的OLED经验分享

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攻城狮Melo 发布时间：2023-5-1 18:38

文章
文章封面:
文章简介:	STM32F103系列控制的OLED IIC 4针

最近在研究四针的OLED 先上个效果图
总工程文件评论区留下邮箱我会发送

硬件部分
有开发板的直接用开发板就好没有的去某宝买一块STM32F103C8T6(10元左右)
类似这种

接线部分
OLED一共有四个接口本别是SCL(时钟)，SDA(数据)，GND(电源负),VCC3.3(注意是接3.3V， 5V会烧坏)
电源正负随便接是3.3V就OK SCL,SDA接单片机IO口具体配置看原理图我这个芯片的对应的是PB6,7用排线连接就好

硬件部分结束。

软件部分
源码是借鉴的亲测能用不得不说站在巨人的肩膀上真的很舒服现在分享主和OLED C文件总工程文件评论区留下邮箱我会发送

//主c文件
#include "delay.h"
#include "sys.h"
#include "oled.h"
#include "bmp.h"
int main(void)
{ u8 t;
delay_init(); //延时函数初始化
NVIC_Configuration(); //设置NVIC中断
// delay_ms(8000);
OLED_Init();
OLED_Clear() ;
t=' ';
//显示汉字
OLED_ShowCHinese(18,0,0);//
OLED_ShowCHinese(36,0,1);//
OLED_ShowCHinese(72,0,2);//
OLED_ShowCHinese(90,0,3);//
while(1)
{
OLED_Clear();
OLED_ShowCHinese(18,0,0);
OLED_ShowCHinese(36,0,1);
OLED_ShowCHinese(72,0,2);
OLED_ShowCHinese(90,0,3);
OLED_ShowString(6,3,"0.96' OLED TEST",16);
OLED_ShowString(0,6,"ASCII:",16);
OLED_ShowString(63,6,"CODE:",16);
OLED_ShowChar(48,6,t,16);//显示字符
t++;
if(t>'~')t=' ';
OLED_ShowNum(103,6,t,3,16);
delay_ms(8000);
delay_ms(8000);
delay_ms(8000);
delay_ms(8000);
delay_ms(8000);
OLED_DrawBMP(0,0,128,8,BMP1); //显示图片
delay_ms(8000);
delay_ms(8000);
delay_ms(8000);
delay_ms(8000);
OLED_DrawBMP(0,0,128,8,BMP1);
delay_ms(8000);
delay_ms(8000);
delay_ms(8000);
delay_ms(8000);
}
}
//oled c文件
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
//GPIOB->CRH |= 0x00080000;
// OLED_SDA = 1;
// delay_us(1);
//OLED_SCL = 1;
//delay_us(50000);
/* while(1)
{
if(!OLED_SDA) //判断是否接收到应答
{
//GPIOB->CRH &= 0XFFF0FFFF; //设置PB12为推挽输出
//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();
}
}
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(0x00,0); //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++);
}
}
//坐标显示
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),OLED_CMD);
}
//开启OLED显示
void OLED_Display_On(void)
{
OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDCÃüÁî
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 DCDCÃüÁî
OLED_WR_Byte(0X10,OLED_CMD); //DCDC OFF
OLED_WR_Byte(0XAE,OLED_CMD); //DISPLAY OFF
}
//清屏函数
void OLED_Clear(void)
{
u8 i,n;
for(i=0;i<8;i++)
{
OLED_WR_Byte (0xb0+i,OLED_CMD); //ÉèÖÃÒ³µØÖ·£¨0~7£©
OLED_WR_Byte (0x00,OLED_CMD); //ÉèÖÃÏÔÊ¾Î»ÖÃ¡ªÁÐµÍµØÖ·
OLED_WR_Byte (0x10,OLED_CMD); //ÉèÖÃÏÔÊ¾Î»ÖÃ¡ªÁÐ¸ßµØÖ·
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); //ÉèÖÃÒ³µØÖ·£¨0~7£©
OLED_WR_Byte (0x00,OLED_CMD); //ÉèÖÃÏÔÊ¾Î»ÖÃ¡ªÁÐµÍµØÖ·
OLED_WR_Byte (0x10,OLED_CMD); //ÉèÖÃÏÔÊ¾Î»ÖÃ¡ªÁÐ¸ßµØÖ·
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
//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
u32 oled_pow(u8 m,u8 n)
{
u32 result=1;
while(n--)result*=m;
return result;
}
//显示两个数字
//x,y :起点坐标
//len :数字的位数
//size:字体的大小
//mode: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<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
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;
}
}
/***********显示BMP图片*****************/
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)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOG, ENABLE); //Ê¹ÄÜPC,D,G¶Ë¿ÚÊ±ÖÓ
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_3|GPIO_Pin_8; //PD3,PD6ÍÆÍìÊä³ö
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50HZ
GPIO_Init(GPIOD, &GPIO_InitStructure); //初始化GPIOD3,6
GPIO_SetBits(GPIOD,GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_3|GPIO_Pin_8); //PD3,PD6 Êä³ö¸ß
#if OLED_MODE==1
GPIO_InitStructure.GPIO_Pin =0xFF; //PC0~7 推挽输出
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_SetBits(GPIOC,0xFF); //PC0~7输出高
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15; //PG13,14,15 OUT推挽输出
GPIO_Init(GPIOG, &GPIO_InitStructure);
GPIO_SetBits(GPIOG,GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15); //PG13,14,15 OUT 输出高
#else
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1; //PC0,1 OUT推挽输出
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1); //PC0,1 OUT 输出高
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15; //PG15 OUT 推挽输出 RST
GPIO_Init(GPIOG, &GPIO_InitStructure);
GPIO_SetBits(GPIOG,GPIO_Pin_15); //PG15 OUT 输出高
#endif
delay_ms(200);
OLED_WR_Byte(0xAE,OLED_CMD);//--display off
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
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
}