diff -r 70c99c2084dc -r e52d11b8f252 main/task_adc.c
--- a/main/task_adc.c	Tue Nov 26 11:55:46 2019 +0100
+++ b/main/task_adc.c	Fri Nov 29 14:26:37 2019 +0100
@@ -12,10 +12,10 @@
 #define NO_OF_SAMPLES   	128          			///< Multisampling
 
 
-#define PRESSURE_1		(CONFIG_PRESSURE_1)
-#define PRESSURE_2      	(CONFIG_PRESSURE_2)
-#define PRESSURE_3      	(CONFIG_PRESSURE_3)
-#define BATT_CHANNEL		(CONFIG_BATT_CHANNEL)
+#define PRESSURE_1		(CONFIG_PRESSURE_1)		///< ADC channel pressure sensor 1
+#define PRESSURE_2      	(CONFIG_PRESSURE_2)		///< ADC channel pressure sensor 2
+#define PRESSURE_3      	(CONFIG_PRESSURE_3)		///< ADC channel pressure sensor 3
+#define BATT_CHANNEL		(CONFIG_BATT_CHANNEL)		///< ADC channel half battery voltage
 
 
 static const char		*TAG = "task_adc";