WIP

README.md

@@ -1,4 +1,4 @@
-# ESP32 ESP-IDF and ESP8266 RTOS SDK component for DHT11/DHT22(AM2302) humidity & temperature sensor
+# ESP32 ESP-IDF and ESP8266 RTOS SDK component for DHT11/DHT22/AM2302/AM2320 humidity & temperature sensor
 
 ## Tested on
 
@@ -22,24 +22,76 @@ In the application, add the component:
 
 ## Example
 
-Reading the sensor:
+Reading the sensor with 1-wire connection (DHT11, DHT22, AM2302, AM2320):
 
 ```c
 #include "zh_dht.h"
 
 void app_main(void)
 {
-	esp_log_level_set("zh_dht", ESP_LOG_NONE);
-	zh_dht_handle_t dht_handle = zh_dht_init(ZH_DHT22, GPIO_NUM_5);
-	float humidity = 0.0;
-	float temperature = 0.0;
-	for (;;)
-	{
-		zh_dht_read(&dht_handle, &humidity, &temperature);
-		printf("Humidity %0.2f\n", humidity);
-		printf("Temperature %0.2f\n", temperature);
-		vTaskDelay(5000 / portTICK_PERIOD_MS);
-	}
+    esp_log_level_set("zh_dht", ESP_LOG_NONE);
+    zh_dht_init_config_t zh_dht_init_config = ZH_DHT_INIT_CONFIG_DEFAULT();
+    zh_dht_init_config.sensor_pin = GPIO_NUM_5;
+    zh_dht_init(&zh_dht_init_config);
+    float humidity = 0.0;
+    float temperature = 0.0;
+    for (;;)
+    {
+        zh_dht_read(&humidity, &temperature);
+        printf("Humidity %0.2f\n", humidity);
+        printf("Temperature %0.2f\n", temperature);
+        vTaskDelay(5000 / portTICK_PERIOD_MS);
+    }
+}
+```
+
+Reading the sensor with I2C connection (AM2320 only):
+
+```c
+#include "zh_dht.h"
+
+#define I2C_PORT (I2C_NUM_MAX - 1)
+
+void app_main(void)
+{
+    esp_log_level_set("zh_dht", ESP_LOG_NONE);
+ #ifdef CONFIG_IDF_TARGET_ESP8266
+    i2c_config_t i2c_config = {
+        .mode = I2C_MODE_MASTER,
+        .sda_io_num = GPIO_NUM_4, // In accordance with used chip.
+        .sda_pullup_en = GPIO_PULLUP_ENABLE,
+        .scl_io_num = GPIO_NUM_5, // In accordance with used chip.
+        .scl_pullup_en = GPIO_PULLUP_ENABLE,
+    };
+    i2c_driver_install(I2C_PORT, i2c_config.mode);
+    i2c_param_config(I2C_PORT, &i2c_config);
+#else
+    i2c_master_bus_config_t i2c_bus_config = {
+        .clk_source = I2C_CLK_SRC_DEFAULT,
+        .i2c_port = I2C_PORT,
+        .scl_io_num = GPIO_NUM_22, // In accordance with used chip.
+        .sda_io_num = GPIO_NUM_21, // In accordance with used chip.
+        .glitch_ignore_cnt = 7,
+        .flags.enable_internal_pullup = true,
+    };
+    i2c_master_bus_handle_t i2c_bus_handle;
+    i2c_new_master_bus(&i2c_bus_config, &i2c_bus_handle);
+    zh_dht_init_config_t zh_dht_init_config = ZH_DHT_INIT_CONFIG_DEFAULT();
+#ifdef CONFIG_IDF_TARGET_ESP8266
+    zh_bh1750_init_config.i2c_port = I2C_PORT;
+#else
+    zh_bh1750_init_config.i2c_handle = i2c_bus_handle;
+#endif
+    zh_dht_init(&zh_dht_init_config);
+    float humidity = 0.0;
+    float temperature = 0.0;
+    for (;;)
+    {
+        zh_dht_read(&humidity, &temperature);
+        printf("Humidity %0.2f\n", humidity);
+        printf("Temperature %0.2f\n", temperature);
+        vTaskDelay(5000 / portTICK_PERIOD_MS);
+    }
 }
 ```