feat: add humidity sensor support with temperature/humidity product

.gitignore

@@ -14,3 +14,4 @@ products/*/configuration/output/*
 .DS_Store
 .vscode/
 .environment/
+.idea/

components/low_code/low_code.h

@@ -62,6 +62,7 @@ typedef enum {
     LOW_CODE_FEATURE_ID_HEATING_SETPOINT = 4006, /*!< Heating setpoint control */
     LOW_CODE_FEATURE_ID_TEMPERATURE_SENSOR_VALUE = 5001,  /*!< Temperature sensor */
     LOW_CODE_FEATURE_ID_OCCUPANCY_SENSOR_VALUE = 6001,  /*!< Occupancy sensor */
+    LOW_CODE_FEATURE_ID_HUMIDITY_SENSOR_VALUE = 7001,  /*!< Humidity sensor */
     LOW_CODE_FEATURE_ID_MAX = UINT32_MAX    /*!< Maximum feature ID value */
 } low_code_feature_id_t;
 

components/temperature_sensor_sht30/temperature_sensor_sht30.c

@@ -172,3 +172,41 @@ int temperature_sensor_sht30_get_celsius(int i2c_port, float *temperature)
 
     return sht30_read_measurement(i2c_port, temperature, NULL);
 }
+
+int temperature_sensor_sht30_get_humidity(int i2c_port, float *humidity)
+{
+    if (!humidity) {
+        return ESP_ERR_INVALID_ARG;
+    }
+
+    esp_err_t err;
+
+    // Start a single shot measurement
+    err = sht30_send_command(i2c_port, MEASUREMENT_SINGLE_SHOT_L_CS_DIS_CMD);
+    if (err != ESP_OK) {
+        return err;
+    }
+
+    ulp_lp_core_delay_cycles(15);
+
+    return sht30_read_measurement(i2c_port, NULL, humidity);
+}
+
+int temperature_sensor_sht30_get_celsius_and_humidity(int i2c_port, float *temperature, float *humidity)
+{
+    if (!temperature && !humidity) {
+        return ESP_ERR_INVALID_ARG;
+    }
+
+    esp_err_t err;
+
+    // Start a single shot measurement
+    err = sht30_send_command(i2c_port, MEASUREMENT_SINGLE_SHOT_L_CS_DIS_CMD);
+    if (err != ESP_OK) {
+        return err;
+    }
+
+    ulp_lp_core_delay_cycles(15);
+
+    return sht30_read_measurement(i2c_port, temperature, humidity);
+}

components/temperature_sensor_sht30/temperature_sensor_sht30.h

@@ -34,6 +34,31 @@ int temperature_sensor_sht30_init(int i2c_port);
  */
 int temperature_sensor_sht30_get_celsius(int i2c_port, float *temperature);
 
+/**
+ * @brief Read relative humidity from the SHT30 sensor.
+ *
+ * This function reads the humidity data from the sensor and stores it in
+ * the provided pointer.
+ *
+ * @param[in] i2c_port I2C port number to which the sensor is connected.
+ * @param[out] humidity Pointer to a float where the relative humidity (0-100 %) will be stored.
+ * @return 0 on success, non-zero on failure.
+ */
+int temperature_sensor_sht30_get_humidity(int i2c_port, float *humidity);
+
+/**
+ * @brief Read temperature and relative humidity from the SHT30 sensor in a single measurement.
+ *
+ * This function reads both values in one I2C transaction, which is more efficient
+ * than calling the individual functions separately.
+ *
+ * @param[in]  i2c_port    I2C port number to which the sensor is connected.
+ * @param[out] temperature Pointer to a float for temperature in Celsius (may be NULL).
+ * @param[out] humidity    Pointer to a float for relative humidity in % (may be NULL).
+ * @return 0 on success, non-zero on failure.
+ */
+int temperature_sensor_sht30_get_celsius_and_humidity(int i2c_port, float *temperature, float *humidity);
+
 #ifdef __cplusplus
 }
 #endif

products/temperature_humidity_sensor/CMakeLists.txt

@@ -0,0 +1,14 @@
+# The following lines have to be present in your project's CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.16)
+
+include(../../tools/cmake/low_code.cmake)
+
+list(APPEND SDKCONFIG_DEFAULTS "sdkconfig.defaults")
+
+list(APPEND EXTRA_COMPONENT_DIRS
+    ../../components
+    ../../drivers
+)
+
+set(PROJECT_VER "1.0")
+project(temperature_humidity_sensor)