[APM32F4] APM32F411V Tiny Board测评】-5-iic代码测试和oled的驱动

I2C_HandleTypeDef  hi2c2;

void MX_I2C2_Init(void) {

    hi2c2.Instance = I2C2;

    hi2c2.Init.ClockSpeed = 100000;

    hi2c2.Init.DutyCycle = I2C_DUTYCYCLE_2;

    hi2c2.Init.OwnAddress1 = 0;

    hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;

    hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;

    hi2c2.Init.OwnAddress2 = 0;

    hi2c2.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;

    hi2c2.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;

    DAL_I2C_Init(&hi2c2);

}

#define OLED_ADDRESS 0x78



// 向 OLED 发送命令

void OLED_SendCommand(uint8_t command) {

    DAL_I2C_Master_Transmit(&hi2c2, OLED_ADDRESS, &command, 1, 100);

}



// 向 OLED 发送数据

void OLED_SendData(uint8_t data) {

    DAL_I2C_Master_Transmit(&hi2c2, OLED_ADDRESS, &data, 1, 100);

}



// OLED 初始化

void OLED_Init(void) {

    OLED_SendCommand(0xAE); // 关闭显示

    OLED_SendCommand(0x20); // 设置内存地址模式

    OLED_SendCommand(0x02); 

    OLED_SendCommand(0xB0); // 设置页地址

    OLED_SendCommand(0xC8); // 扫描方向反转

    OLED_SendCommand(0x00); // 低列起始地址

    OLED_SendCommand(0x10); // 高列起始地址

    OLED_SendCommand(0x40); // 设置显示起始行

    OLED_SendCommand(0x81); // 设置对比度

    OLED_SendCommand(0xFF); 

    OLED_SendCommand(0xA1); // 段重映射

    OLED_SendCommand(0xA6); // 正常显示（非反相）

    OLED_SendCommand(0xA8); // 设置多路复用比

    OLED_SendCommand(0x3F); 

    OLED_SendCommand(0xA4); // 全局显示开启

    OLED_SendCommand(0xD3); // 设置显示偏移

    OLED_SendCommand(0x00); 

    OLED_SendCommand(0xD5); // 设置时钟分频比

    OLED_SendCommand(0x80); 

    OLED_SendCommand(0xD9); // 预充电设置

    OLED_SendCommand(0xF1); 

    OLED_SendCommand(0xDA); // 引脚配置

    OLED_SendCommand(0x12); 

    OLED_SendCommand(0x8D); // 电荷泵设置

    OLED_SendCommand(0x14); 

    OLED_SendCommand(0xAF); // 开启显示

}



// 在指定位置显示一个像素

void OLED_SetPixel(uint8_t x, uint8_t y, uint8_t color) {

    uint8_t page = y / 8;

    uint8_t col = x;

    if (color) {

        OLED_SendData(0x01 << (y % 8));

    } else {

        OLED_SendData(0x00);

    }

    OLED_SendCommand(0xB0 + page);

    OLED_SendCommand((col & 0xF0) >> 4 | 0x10);

    OLED_SendCommand(col & 0x0F);

}



// 发送命令函数修改

void OLED_WriteCmd(uint8_t cmd) {

    DAL_I2C_Master_Transmit(&hi2c, OLED_ADDRESS, &cmd, 1, 1000);

}



// 发送数据函数修改

void OLED_WriteData(uint8_t data) {

    DAL_I2C_Master_Transmit(&hi2c, OLED_ADDRESS, &data, 1, 1000);

}



// 设置光标位置函数修改

void OLED_SetCursor(uint8_t x, uint8_t y) {

    OLED_WriteCmd(0xB0 + y);

    OLED_WriteCmd(((x & 0xF0) >> 4) | 0x10);

    OLED_WriteCmd((x & 0x0F) | 0x01);

}



void OLED_Clear()

{

    for (uint8_t i = 0; i < 8; i++)

    {

        OLED_SetCursor(0, i);

        for (uint8_t j = 0; j < 128; j++)

        {

            OLED_WriteData(0x00);

        }

    }

}



void OLED_ShowString(uint8_t x, uint8_t y, const char *str)

{

    OLED_SetCursor(x, y);

    while (*str)

    {

        OLED_WriteData(*str++);

    }

}



typedef enum {

    MENU_FUNCTION,

    MENU_TEST,

    MENU_FUNCTION_SOFT,

    MENU_FUNCTION_NORMAL,

    MENU_FUNCTION_STRONG,

    MENU_TEST_PROGRESSIVE,

    MENU_TEST_SENSOR_BASED

} Menu;



Menu current_menu = MENU_FUNCTION;

Menu previous_menu = MENU_FUNCTION_SOFT;



#define OLED_COLOR_BLACK 0x00



void OLED_Fill_Black(uint8_t data) {

    for (int page = 0; page < 8; page++) {

        // 设置页地址

        uint8_t cmd[2] = {0xB0 + page, 0x00}; 

        DAL_I2C_Master_Transmit(&hi2c, OLED_ADDRESS, cmd, 2, 100);



        // 逐列填充颜色数据

        for (int col = 0; col < 128; col++) {

            DAL_I2C_Master_Transmit(&hi2c, OLED_ADDRESS, &data, 1, 100);

        }

    }

}



void OLED_WriteString(const char *str, uint8_t font, uint8_t color) {

    while (*str) {

        uint8_t data[2] = {(uint8_t)*str, color};

        HAL_I2C_Master_Transmit(&hi2c, OLED_ADDRESS, data, 2, 100);

        str++;

    }

}

int main()

{

    DAL_Init();

    SystemClock_Config();



    MX_I2C2_Init();

    OLED_Init();



    OLED_Clear();

    OLED_ShowString(0, 0, "Hello, World!");