embedded-hal = { version = "1.0.0" } 
embedded-graphics = "0.8.1"
dht-sensor = "0.2.1"
ssd1306 = "0.8.1"
u8g2-fonts = { version = "0.4.0", features = ["embedded_graphics_textstyle"] }

use embedded_graphics::{
    pixelcolor::BinaryColor,
    prelude::*,
    primitives::{Line, PrimitiveStyle},
    text::{Baseline, Text},
};
use u8g2_fonts::U8g2TextStyle;

  ...此處省略了很多代碼
  // Create a text style for drawing the font:
此處的u8g2_font_wqy12_t_gb2312是輸出中文的重點
    let character_style =
        U8g2TextStyle::new(u8g2_fonts::fonts::u8g2_font_wqy12_t_gb2312, BinaryColor::On);

fn main()  -> {
 .... 此處省略了很多代碼
loop {
             // Empty the display:
        // Draw 3 lines of text:
        //reset before loop
        let _ = display.clear(BinaryColor::Off);

        write!(&mut line2, "濕度： {}%", humi).unwrap();
        Text::with_baseline(
            line2.as_str(),
            Point::new(32, 38),
            character_style.clone(),
            Baseline::Top,
        )
        .draw(&mut display)
        .unwrap();

    ... 此處省略了很多代碼
        display.flush().unwrap();
        // delay for 1 sec
        //per loop is 1 sec
        timer.delay_ms(1000);
 }
}