写一段stm32用oled显示屏显示温湿度和水位代码

好的，以下是一段 STM32F103 上使用 OLED 显示屏显示温湿度和水位的代码：

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

#define OLED_ADDRESS 0x78
#define I2C_CHANNEL I2C1

void oled_write_byte(uint8_t cmd, uint8_t dat);
void oled_clear();
void oled_show_string(uint8_t x, uint8_t y, char *str);

int main(void)
{
    // 初始化延时、I2C、OLED 屏幕
    delay_init();
    i2c_init(I2C_CHANNEL, GPIOB, GPIO_Pin_6, GPIO_Pin_7);
    oled_write_byte(0xAE, 0x00); // 关闭显示
    oled_write_byte(0x20, 0x00); // 设置内存地址模式
    oled_write_byte(0x10, 0x00); // 设置水平方向的寻址模式
    oled_write_byte(0xB0, 0x00); // 设置显示起始行
    oled_write_byte(0xC8, 0x00); // 设置COM输出扫描方向
    oled_write_byte(0x00, 0x10); // 设置低列地址
    oled_write_byte(0x40, 0x00); // 设置高列地址

    // 读取温度、湿度、水位等传感器数据
    float temperature = 25.0;
    float humidity = 35.0;
    float water_level = 50.0;

    // 在 OLED 显示屏幕上显示温湿度和水位
    oled_clear();
    char buf[16];
    sprintf(buf, "Temp: %.1f", temperature);
    oled_show_string(0, 0, buf);
    sprintf(buf, "Humidity: %.1f", humidity);
    oled_show_string(0, 1, buf);
    sprintf(buf, "Water Level: %.1f", water_level);
    oled_show_string(0, 2, buf);

    while(1);
}

void oled_write_byte(uint8_t cmd, uint8_t dat)
{
    uint8_t buf[2] = {cmd, dat};
    i2c_write(I2C_CHANNEL, OLED_ADDRESS, buf, 2);
}

void oled_clear()
{
    for(int page = 0; page < 8; page++)
    {
        oled_write_byte(0xB0 + page, 0x00);
        oled_write_byte(0x00, 0x10);
        oled_write_byte(0x00, 0x00);
        for(int col = 0; col < 128; col++)
        {
            oled_write_byte(0x40, 0x00);
        }
    }
}

void oled_show_string(uint8_t x, uint8_t y, char *str)
{
    uint8_t page = y;
    uint8_t col = x * 8;
    while(*str)
    {
        char chr = *str;
        oled_write_byte(0xB0 + page, col & 0x0F);
        oled_write_byte(((col & 0xF0) >> 4) | 0x10, 0x00);
        oled_write_byte(((chr - ' ') * 16) | 0x01, 0x00);
        for(int i = 0; i < 8; i++)
        {
            oled_write_byte(0x40, 0xFF);
        }
        col += 8;
        str++;
    }
}