docs(aht20): improve documentation and update changelog

   - Expanded documentation with additional details
   - Fixed a typo in `main.c` of the associated example
   - Updated `CHANGELOG.md` to reflect recent updates

 On branch update_aht20
 Changes to be committed:
	modified:   components/sensors/humiture/aht20/CHANGELOG.md
	modified:   components/sensors/humiture/aht20/README.md
	deleted:    components/sensors/humiture/aht20/priv_include/aht20_reg.h
	modified:   examples/sensors/aht20_Sensor_Hub/README.md
	modified:   examples/sensors/aht20_Sensor_Hub/main/aht20_demo_sensor_hub.c

Author: jeetrohan

components/sensors/humiture/aht20/CHANGELOG.md

@@ -1,7 +1,8 @@
 # ChangeLog
 
-## v1.1.1 (2025-05-02)
-* Replace the i2c interface with i2c_bus
+## v1.1.1 (2025-05-28)
+* Replace the i2c interface with i2c_bus.
+* Added support for Sensor Hub.
 
 ## v1.0.0 (2024-08-09)
 

components/sensors/humiture/aht20/README.md

@@ -1,5 +1,5 @@
 # Component: AHT20
-I2C driver for Aosong AHT20 humidity and temperature sensor using esp-idf.
+I2C driver with Sensor Hub support for Aosong AHT20 humidity and temperature sensor using esp-idf.
 Tested with AHT20 using ESP32 and ESP32-S3 devkits.
 
 # Features
@@ -45,13 +45,13 @@ Tested with AHT20 using ESP32 and ESP32-S3 devkits.
 
 # How To Use
 
-This driver includes a demo example project.
+This driver includes demo examples.
 
-Follow the example to learn how to initialize the driver and read the sensor data.
+Follow the examples to learn how to initialize the driver or use Sensor Hub  and read the sensor data.
 
 All public APIs are documented in aht20.h.
 
-
+## Driver
 
 Following are the general guidelines.
 ```c
@@ -75,8 +75,23 @@ Following are the general guidelines.
     printf("tempertature = %uC  humidity = %u \n", raw_value.temperature, raw_value.humidity);
 ```
 
+## Senosr Hub
+
+Following are the general guidelines. The sensor config and event handler used are in example.
+``` 
+    
+    /*create a sensor with specific sensor_id and configurations*/
+    iot_sensor_create("aht20", &sensor_config, &sensor_handle); 
+   
+     /*register handler with sensor's handle*/
+    iot_sensor_handler_register(sensor_handle, sensor_event_handler, NULL);
+
+    /*start the sensor, data ready events will be posted once data is acquired successfully*/
+    iot_sensor_start(sensor_handle); 
+ 
+```
 
-# How to Configure CRC and I2C clock speed
+## How to Configure CRC and I2C clock speed
 Additionally, select in menuconfig under Component Config → AHT20; to use CRC(default is not used)
 or change the clock speed of device (default is 100KHz). 
 

components/sensors/humiture/aht20/priv_include/aht20_reg.h

@@ -1,3 +1,3 @@
-This is a demo which uses the aht20 driver.
+This is a demo which uses the Sensor Hub.
 
 It simply reads the humiture from aht20 sensor and prints the output continuously on terminal.

examples/sensors/aht20_Sensor_Hub/README.md

@@ -59,7 +59,7 @@ static void sensor_event_handler(void *handler_args, esp_event_base_t base, int3
                  sensor_data->temperature);
         break;
     case SENSOR_HUMI_DATA_READY:
-        ESP_LOGI(TAG, "Timestamp = %llu - %s_0x%x TEMP_DATA_READY - "
+        ESP_LOGI(TAG, "Timestamp = %llu - %s_0x%x HUMIDITY_DATA_READY - "
                  "humidity=%.2f\n",
                  sensor_data->timestamp,
                  sensor_data->sensor_name,
@@ -100,19 +100,24 @@ void init_aht20()
         .min_delay = SENSOR_PERIOD         /*data acquire period*/
     };
 
-    iot_sensor_create("aht20", &sensor_config, &sensor_handle); /*create a sensor with specific sensor_id and configurations*/
+    /*create a sensor with specific sensor_id and configurations*/
+    iot_sensor_create("aht20", &sensor_config, &sensor_handle);
 
     /*register handler with sensor's handle*/
     iot_sensor_handler_register(sensor_handle, sensor_event_handler, NULL);
 
-    iot_sensor_start(sensor_handle); /*start a sensor, data ready events will be posted once data acquired successfully*/
+    /*start a sensor, data ready events will be posted once data acquired successfully*/
+    iot_sensor_start(sensor_handle);
 
 }
 
 void app_main(void)
 {
-    i2c_master_init(); //initialize i2c master
-    init_aht20();    // user defined function for aht20 initialization
+    //initialize i2c master
+    i2c_master_init();
+
+    // user defined function for aht20 initialization
+    init_aht20();
 
     while (1) {
         vTaskDelay(1000);