diff --git a/io/io.c b/io/io.c
index 875548d..5e754dd 100755
--- a/io/io.c
+++ b/io/io.c
@@ -9,6 +9,8 @@ struct GPIO_KEY_DATA gpioKeyPwrDown;
 
 char nInitialized = 0;
 
+/// @brief Initialize the io pins
+/// @return 
 int IO_Init()
 {
     if (wiringPiSetupPinType(WPI_PIN_BCM))
@@ -193,13 +195,13 @@ void IO_DoCyclic()
             // plus key is pressed -> increase power
             if (motctrl[0].iMotorGear == MOTOR_GEAR_NEUTRAL)
             {
-                mylog(LOG_INFO, "KEY-Plus: Start motor.");
+                mylog(LOG_INFO, "IO: KEY-Plus: Start motor.");
                 Can_SetMotorGear(0, 1);
                 Can_SetMotorPower(0, MOTOR_PWR_MIN_PCT);
             }
             else
             {
-                mylog(LOG_INFO, "KEY-Plus: Increase power.");
+                mylog(LOG_INFO, "IO: KEY-Plus: Increase power.");
                 Can_SetMotorPower(0, motctrl[0].iMotorPowerPct + MOTOR_PWR_STEP);
             }
         }
@@ -209,12 +211,12 @@ void IO_DoCyclic()
             // minus key is pressed -> decrease power
             if (motctrl[0].iMotorPowerPct > MOTOR_PWR_MIN_PCT)
             {
-                mylog(LOG_INFO, "KEY-Minus: Decrease power.");
+                mylog(LOG_INFO, "IO: KEY-Minus: Decrease power.");
                 Can_SetMotorPower(0, motctrl[0].iMotorPowerPct - MOTOR_PWR_STEP);
             }
             else
             {
-                mylog(LOG_INFO, "KEY-Minus: Stop motor.");
+                mylog(LOG_INFO, "IO: KEY-Minus: Stop motor.");
                 Can_SetMotorGear(0, 0);
             }
         }