include: drivers: sensor: enhance Doxygen documentation for FDC2X1X

Complete the Doxygen documentation for this sensor driver,
put in sensor_interface_ext group.

Signed-off-by: Benjamin Cabé <[email protected]>

Author: kartben

include/zephyr/drivers/sensor/fdc2x1x.h

@@ -6,26 +6,37 @@
 
 /**
  * @file
- * @brief Extended public API for the Texas Instruments FDC2X1X
+ * @brief Header file for extended sensor API of FDC2X1X sensor
+ * @ingroup fdc2x1x_interface
  */
 
 #ifndef ZEPHYR_INCLUDE_DRIVERS_SENSOR_FDC2X1X_H_
 #define ZEPHYR_INCLUDE_DRIVERS_SENSOR_FDC2X1X_H_
 
+/**
+ * @brief Texas Instruments FDC2X1X capacitive sensor
+ * @defgroup fdc2x1x_interface FDC2X1X
+ * @ingroup sensor_interface_ext
+ * @{
+ */
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #include <zephyr/drivers/sensor.h>
 
+/**
+ * Custom sensor channels for FDC2X1X
+ */
 enum sensor_channel_fdc2x1x {
-	/** CH0 Capacitance, in Picofarad **/
+	/** CH0 Capacitance, in picofarad **/
 	SENSOR_CHAN_FDC2X1X_CAPACITANCE_CH0 = SENSOR_CHAN_PRIV_START,
-	/** CH1 Capacitance, in Picofarad **/
+	/** CH1 Capacitance, in picofarad **/
 	SENSOR_CHAN_FDC2X1X_CAPACITANCE_CH1,
-	/** CH2 Capacitance, in Picofarad **/
+	/** CH2 Capacitance, in picofarad **/
 	SENSOR_CHAN_FDC2X1X_CAPACITANCE_CH2,
-	/** CH3 Capacitance, in Picofarad **/
+	/** CH3 Capacitance, in picofarad **/
 	SENSOR_CHAN_FDC2X1X_CAPACITANCE_CH3,
 
 	/** CH0 Frequency, in MHz **/
@@ -42,4 +53,8 @@ enum sensor_channel_fdc2x1x {
 }
 #endif
 
+/**
+ * @}
+ */
+
 #endif /* ZEPHYR_INCLUDE_DRIVERS_SENSOR_FDC2X1X_ */