feat: start preparing dht20

Author: zeldan

README.md

@@ -12,7 +12,7 @@ We’ve tested it with the ESP32-WROOM, and you can find a detailed example belo
 
 ## Getting Started
 
-### Example 
+### Example - ESP32
 
 ```rust
 #![no_std]

src/dht.rs

@@ -5,7 +5,7 @@ use embedded_hal::{
 
 use crate::SensorError;
 
-/// Common base struct for DHT sensors.
+/// Common base struct for DHT11, DHT22 sensors.
 pub struct Dht<P: InputPin + OutputPin, D: DelayNs> {
     pub pin: P,
     pub delay: D,

src/dht20.rs

@@ -0,0 +1,30 @@
+use embedded_hal::{delay::DelayNs, i2c::I2c};
+
+use crate::{SensorError, SensorReading};
+
+pub struct Dht20<P: I2c, D: DelayNs> {
+    pub pin: P,
+    pub delay: D,
+}
+
+impl<P: I2c, D: DelayNs> Dht20<P, D> {
+    pub fn new(pin: P, delay: D) -> Self {
+        Self {
+            pin: pin,
+            delay: delay,
+        }
+    }
+
+    pub fn read(&mut self) -> Result<SensorReading, SensorError> {
+       
+        // TODO
+        let humidity_percentage = 10.0;
+        // TODO
+        let temperatue_percentage = 10.0;
+
+        Ok(SensorReading {
+            humidity: humidity_percentage as f32,
+            temperature: temperatue_percentage as f32,
+        })
+    }
+}

src/lib.rs

@@ -2,6 +2,7 @@
 
 mod dht;
 pub mod dht11;
+pub mod dht20;
 pub mod dht22;
 
 /// Represents a reading from the sensor.