Add TI temp sensor HDC302x

Author: StijnCoussement

drivers/sensor/ti/ti_hdc302x/ti_hdc302x.c

@@ -29,6 +29,26 @@ static const uint8_t REG_HEATER_ON[] = {0x30, 0x6D};
 static const uint8_t REG_HEATER_OFF[] = {0x30, 0x66};
 static const uint8_t REG_HEATER_LEVEL[] = {0x30, 0x6E};
 
+struct ti_hdc302x_config {
+	struct i2c_dt_spec bus;
+	struct gpio_dt_spec gpio_int;
+};
+
+struct ti_hdc302x_data {
+	struct gpio_callback cb_int;
+	sensor_trigger_handler_t th_handler;
+	struct sensor_trigger th_trigger;
+	uint16_t t_sample;
+	uint16_t rh_sample;
+	uint16_t t_alert;
+	uint16_t rh_alert;
+	uint8_t t_offset;
+	uint8_t rh_offset;
+	enum sensor_power_mode_hdc302x power_mode;
+	enum sensor_measurement_interval_hdc302x interval;
+	uint8_t selected_mode[2];
+};
+
 /* Alert status registers */
 static const uint8_t alert_set_commands[][2] = {
 	{0x61, 0x00},
@@ -266,7 +286,10 @@ static void interrupt_callback(const struct device *dev, struct gpio_callback *c
 	struct ti_hdc302x_data *data = CONTAINER_OF(cb, struct ti_hdc302x_data, cb_int);
 	ARG_UNUSED(pins);
 	LOG_DBG("Interrupt received");
-	k_sem_give(&data->sem_int);
+
+	if (data->th_handler != NULL) {
+		data->th_handler(dev, &data->th_trigger);
+	}
 }
 
 /**
@@ -298,7 +321,8 @@ static int ti_hdc302x_sample_fetch(const struct device *dev, enum sensor_channel
 		}
 	}
 
-	/* Read temperature and humidity data (6 bytes: T_MSB, T_LSB, T_CRC, RH_MSB, RH_LSB, RH_CRC)
+	/* Read temperature and humidity data (6 bytes: T_MSB, T_LSB, T_CRC, RH_MSB, RH_LSB,
+	 * RH_CRC)
 	 */
 	rc = read_sensor_data(dev, buf, sizeof(buf));
 	if (rc < 0) {
@@ -862,11 +886,24 @@ static int ti_hdc302x_attr_set(const struct device *dev, enum sensor_channel cha
 	return 0;
 }
 
+static int ti_hdc302x_trigger_set(const struct device *dev, const struct sensor_trigger *trig,
+				  sensor_trigger_handler_t handler)
+{
+	struct ti_hdc302x_data *data = dev->data;
+
+	if (trig->type == SENSOR_TRIG_DELTA) {
+		data->th_handler = handler;
+		data->th_trigger = *trig;
+	}
+	return 0;
+}
+
 static DEVICE_API(sensor, ti_hdc302x_api_funcs) = {
 	.sample_fetch = ti_hdc302x_sample_fetch,
 	.channel_get = ti_hdc302x_channel_get,
 	.attr_set = ti_hdc302x_attr_set,
 	.attr_get = ti_hdc302x_attr_get,
+	.trigger_set = ti_hdc302x_trigger_set,
 };
 
 static int ti_hdc302x_reset(const struct device *dev)
@@ -947,8 +984,6 @@ static int ti_hdc302x_init(const struct device *dev)
 			LOG_ERR("Failed to add interrupt callback: %d", rc);
 			return rc;
 		}
-
-		k_sem_init(&data->sem_int, 0, K_SEM_MAX_LIMIT);
 	}
 
 	LOG_DBG("HDC302x sensor initialized successfully");

include/zephyr/drivers/sensor/ti_hdc302x.h

@@ -84,28 +84,6 @@ enum sensor_measurement_interval_hdc302x {
 	HDC302X_SENSOR_MEAS_INTERVAL_MAX
 };
 
-struct ti_hdc302x_config {
-	struct i2c_dt_spec bus;
-	struct gpio_dt_spec gpio_int;
-};
-
-struct ti_hdc302x_data {
-	struct gpio_callback cb_int;
-
-	/* Semaphore will be used to signal when an interrupt occurs */
-	struct k_sem sem_int;
-
-	uint16_t t_sample;
-	uint16_t rh_sample;
-	uint16_t t_alert;
-	uint16_t rh_alert;
-	uint8_t t_offset;
-	uint8_t rh_offset;
-	enum sensor_power_mode_hdc302x power_mode;
-	enum sensor_measurement_interval_hdc302x interval;
-	uint8_t selected_mode[2];
-};
-
 #ifdef __cplusplus
 }
 #endif