在stm32f103c8t6上使用的的0.96寸i2coled显示屏代码

以下是使用STM32F103C8T6控制0.96寸I2C OLED显示屏的代码，需要注意的是，你需要将i2c.h和i2c.c文件添加到你的工程中，并根据你的硬件连接修改i2c.h文件中的宏定义。

#include "stm32f10x.h"
#include "i2c.h"

#define OLED_ADDRESS 0x78
#define OLED_CMD 0x00
#define OLED_DATA 0x40

void OLED_Init(void);
void OLED_WriteCmd(uint8_t cmd);
void OLED_WriteData(uint8_t data);
void OLED_SetPos(uint8_t x, uint8_t y);
void OLED_Fill(uint8_t fill_Data);
void OLED_ShowChar(uint8_t x, uint8_t y, uint8_t chr);
void OLED_ShowString(uint8_t x, uint8_t y, uint8_t *str);

int main(void)
{
    SystemInit();
    I2C_Init();
    OLED_Init();

    while (1)
    {
        OLED_Fill(0xFF);
        OLED_ShowString(0, 0, "Hello World!");
    }
}

void OLED_Init(void)
{
    OLED_WriteCmd(0xAE);//display off
    OLED_WriteCmd(0x20);//Set Memory Addressing Mode
    OLED_WriteCmd(0x10);//00,Horizontal Addressing Mode;01,Vertical Addressing Mode;10,Page Addressing Mode (RESET);11,Invalid
    OLED_WriteCmd(0xb0);//Set Page Start Address for Page Addressing Mode,0-7
    OLED_WriteCmd(0xc8);//Set COM Output Scan Direction
    OLED_WriteCmd(0x00);//---set low column address
    OLED_WriteCmd(0x10);//---set high column address
    OLED_WriteCmd(0x40);//--set start line address
    OLED_WriteCmd(0x81);//--set contrast control register
    OLED_WriteCmd(0xff);
    OLED_WriteCmd(0xa1);//--set segment re-map 0 to 127
    OLED_WriteCmd(0xa6);//--set normal display
    OLED_WriteCmd(0xa8);//--set multiplex ratio(1 to 64)
    OLED_WriteCmd(0x3F);//--1/64 duty
    OLED_WriteCmd(0xa4);//0xa4,Output follows RAM content;0xa5,Output ignores RAM content
    OLED_WriteCmd(0xd3);//-set display offset
    OLED_WriteCmd(0x00);//-not offset
    OLED_WriteCmd(0xd5);//--set display clock divide ratio/oscillator frequency
    OLED_WriteCmd(0xf0);//--set divide ratio
    OLED_WriteCmd(0xd9);//--set pre-charge period
    OLED_WriteCmd(0x22); //
    OLED_WriteCmd(0xda);//--set com pins hardware configuration
    OLED_WriteCmd(0x12);
    OLED_WriteCmd(0xdb);//--set vcomh
    OLED_WriteCmd(0x20);//0x20,0.77xVcc
    OLED_WriteCmd(0x8d);//--set DC-DC enable
    OLED_WriteCmd(0x14);//
    OLED_WriteCmd(0xaf);//--turn on oled panel
}

void OLED_WriteCmd(uint8_t cmd)
{
    I2C_Start();
    I2C_SendByte(OLED_ADDRESS);
    I2C_SendByte(OLED_CMD);
    I2C_SendByte(cmd);
    I2C_Stop();
}

void OLED_WriteData(uint8_t data)
{
    I2C_Start();
    I2C_SendByte(OLED_ADDRESS);
    I2C_SendByte(OLED_DATA);
    I2C_SendByte(data);
    I2C_Stop();
}

void OLED_SetPos(uint8_t x, uint8_t y)
{
    OLED_WriteCmd(0xb0 + y);
    OLED_WriteCmd(((x & 0xf0) >> 4) | 0x10);
    OLED_WriteCmd(x & 0x0f);
}

void OLED_Fill(uint8_t fill_Data)
{
    uint8_t m, n;
    for (m = 0; m < 8; m++)
    {
        OLED_WriteCmd(0xb0 + m); //page0-page1
        OLED_WriteCmd(0x00); //low column start address
        OLED_WriteCmd(0x10); //high column start address
        for (n = 0; n < 128; n++)
        {
            OLED_WriteData(fill_Data);
        }
    }
}

void OLED_ShowChar(uint8_t x, uint8_t y, uint8_t chr)
{
    uint8_t c = 0, i = 0;
    c = chr - ' '; //得到偏移后的值
    if (x > 120)
    {
        x = 0;
        y++;
    }
    OLED_SetPos(x, y);
    for (i = 0; i < 6; i++)
    {
        OLED_WriteData(F6x8[c][i]);
    }
}

void OLED_ShowString(uint8_t x, uint8_t y, uint8_t *str)
{
    uint8_t j = 0;
    while (str[j] != '\0')
    {
        OLED_ShowChar(x, y, str[j]);
        x += 6;
        if (x > 126)
        {
            x = 0;
            y++;
        }
        j++;
    }
}

以上代码中的i2c.h和i2c.c文件可以在网上找到，也可以自己编写。另外，需要注意的是，本代码使用的是6x8点阵字体，如果需要使用其他字体，需要修改OLED_ShowChar函数中的字体数组。