Diff: src/Gears.cpp

Revision:

2:825f572902c6

Parent:

1:b3907b8d9f65

--- a/src/Gears.cpp	Mon Jun 25 21:01:02 2012 +0000
+++ b/src/Gears.cpp	Mon Jun 25 21:20:22 2012 +0000
@@ -3,6 +3,9 @@
 #include "PinDetect.h"
 #include "Comms.h"
 
+//Detect and process presses of the Gear buttons
+
+//Initialise members and set up button handlers
 Gears::Gears(PinName up, PinName neutral, PinName down, unsigned char* _currentGear, Comms* _remote)
 {
     currentGear = _currentGear;
@@ -12,14 +15,17 @@
     btnNeutral = new PinDetect(neutral, PullUp);
     btnDown = new PinDetect(down, PullUp);
 
+    //Set buttons as pull down to assert
     btnUp->setAssertValue(0);
     btnDown->setAssertValue(0);
     btnNeutral->setAssertValue(0);
     
+    //Attach handlers
     btnUp->attach_asserted(this, &Gears::up);
     btnDown->attach_asserted(this, &Gears::down);
     btnNeutral->attach_asserted(this, &Gears::neutral);
     
+    //Start checking buttons
     btnUp->setSampleFrequency();
     btnDown->setSampleFrequency();
     btnNeutral->setSampleFrequency();
@@ -27,23 +33,29 @@
 
 void Gears::up()
 {
+    //Send change up command
     remote->send(2);
     
+    //Update state
     if(*currentGear < 6)
         (*currentGear)++;
 }
 
 void Gears::neutral()
 {
+    //Sent neutral command
     remote->send(0);
     
+    //Update state
     *currentGear = 0;
 }
 
 void Gears::down()
 {
+    //Send change down command
     remote->send(1);
     
+    //Update state
     if(*currentGear > 0)
     {
         (*currentGear)--;