stm32c8t6驱动oled显示屏的代码

下面是一个基于STM32C8T6的驱动OLED显示屏的代码示例。代码使用I2C协议与OLED通信，使用的OLED显示屏是SSD1306，但是可以根据具体情况进行修改。

注：以下代码仅供参考，具体实现还需要根据具体情况进行修改。

#include "stm32f10x.h"  //包含STM32标准库
#include "oled.h"       //包含OLED显示屏函数库

int main(void) {
    //初始化I2C接口
    I2C_init();

    //初始化OLED显示屏
    OLED_init();

    //在OLED显示屏上显示字符串
    OLED_showString(0, 0, "Hello, world!");

    while (1) {
        //循环执行
    }
}

//初始化I2C接口
void I2C_init(void) {
    //配置GPIO引脚
    GPIO_InitTypeDef GPIO_InitStructure;
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    //配置I2C接口
    I2C_InitTypeDef I2C_InitStructure;
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
    I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
    I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
    I2C_InitStructure.I2C_OwnAddress1 = 0;
    I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
    I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
    I2C_InitStructure.I2C_ClockSpeed = 400000;
    I2C_Init(I2C1, &I2C_InitStructure);
    I2C_Cmd(I2C1, ENABLE);
}

//向OLED显示屏发送数据
void OLED_writeData(uint8_t data) {
    I2C_GenerateSTART(I2C1, ENABLE);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
    I2C_Send7bitAddress(I2C1, OLED_ADDRESS, I2C_Direction_Transmitter);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
    I2C_SendData(I2C1, OLED_DATA_MODE);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
    I2C_SendData(I2C1, data);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
    I2C_GenerateSTOP(I2C1, ENABLE);
}

//向OLED显示屏发送命令
void OLED_writeCmd(uint8_t cmd) {
    I2C_GenerateSTART(I2C1, ENABLE);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
    I2C_Send7bitAddress(I2C1, OLED_ADDRESS, I2C_Direction_Transmitter);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
    I2C_SendData(I2C1, OLED_CMD_MODE);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
    I2C_SendData(I2C1, cmd);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
    I2C_GenerateSTOP(I2C1, ENABLE);
}

//初始化OLED显示屏
void OLED_init(void) {
    OLED_writeCmd(0xAE); //关闭显示
    OLED_writeCmd(0x20); //设置内存地址模式
    OLED_writeCmd(0x10); //水平地址模式
    OLED_writeCmd(0xb0); //设置起始行
    OLED_writeCmd(0xc8); //设置COM扫描方向
    OLED_writeCmd(0x00); //设置低列地址
    OLED_writeCmd(0x10); //设置高列地址
    OLED_writeCmd(0x40); //设置显示起始线
    OLED_writeCmd(0x81); //设置对比度
    OLED_writeCmd(0xff); //设置对比度值
    OLED_writeCmd(0xa1); //设置段重定向
    OLED_writeCmd(0xa6); //设置正常显示
    OLED_writeCmd(0xa8); //设置多路复用比率
    OLED_writeCmd(0x3f); //设置多路复用比率值
    OLED_writeCmd(0xa4); //设置全局显示开启
    OLED_writeCmd(0xd3); //设置显示偏移
    OLED_writeCmd(0x00); //设置显示偏移值
    OLED_writeCmd(0xd5); //设置显示时钟分频
    OLED_writeCmd(0xf0); //设置显示时钟分频值
    OLED_writeCmd(0xd9); //设置预充电周期
    OLED_writeCmd(0x22); //设置预充电周期值
    OLED_writeCmd(0xda); //设置COM硬件设置
    OLED_writeCmd(0x12); //设置COM硬件设置值
    OLED_writeCmd(0xdb); //设置VCOMH
    OLED_writeCmd(0x20); //设置VCOMH值
    OLED_writeCmd(0x8d); //设置电荷泵
    OLED_writeCmd(0x14); //设置电荷泵开启
    OLED_writeCmd(0xaf); //开启显示
}

//在OLED显示屏上显示字符串
void OLED_showString(uint8_t x, uint8_t y, uint8_t *str) {
    uint8_t c = 0, i = 0, j = 0;
    while (str[j] != '\0') {
        c = str[j] - 32;
        if (x > 120) {
            x = 0;
            y++;
        }
        OLED_setPos(x, y);
        for (i = 0; i < 6; i++) {
            OLED_writeData(F6x8[c][i]);
        }
        x += 6;
        j++;
    }
}

//设置OLED显示屏的位置
void OLED_setPos(uint8_t x, uint8_t y) {
    OLED_writeCmd(0xb0 + y);
    OLED_writeCmd(((x & 0xf0) >> 4) | 0x10);
    OLED_writeCmd((x & 0x0f) | 0x01);
}