M82 changed so that it reports steps/mm when given no arguments.

GCodes.cpp

@@ -1130,6 +1130,7 @@ bool GCodes::ActOnGcode(GCodeBuffer *gb)
   bool result = true;
   bool error = false;
   bool resend = false;
+  bool seen;
   char reply[STRING_LENGTH];
 
   reply[0] = 0;
@@ -1292,10 +1293,18 @@ bool GCodes::ActOnGcode(GCodeBuffer *gb)
     case 85: // Set inactive time
     	break;
 
-    case 92: // Set steps/mm for some axes
+    case 92: // Set/report steps/mm for some axes
+    	seen = false;
     	for(int8_t drive = 0; drive < DRIVES; drive++)
     		if(gb->Seen(gCodeLetters[drive]))
+    		{
     			platform->SetDriveStepsPerUnit(drive, gb->GetFValue());
+    			seen = true;
+    		}
+    	if(!seen)
+    		snprintf(reply, STRING_LENGTH, "Steps/mm: X: %d, Y: %d, Z: %d, E: %d",
+    				(int)platform->DriveStepsPerUnit(X_AXIS), (int)platform->DriveStepsPerUnit(Y_AXIS),
+    				(int)platform->DriveStepsPerUnit(Z_AXIS), (int)platform->DriveStepsPerUnit(AXES)); // FIXME - needs to do multiple extruders
         break;
 
     case 104: // Depricated
@@ -1550,6 +1559,17 @@ bool GCodes::ActOnGcode(GCodeBuffer *gb)
     	reprap.GetMove()->SetIdentityTransform();
     	break;
 
+    case 876: // TEMPORARY - this will go away...
+    	if(gb->Seen('P'))
+    	{
+    		iValue = gb->GetIValue();
+    		if(iValue != 1)
+    			platform->SetHeatOn(0);
+    		else
+    			platform->SetHeatOn(1);
+    	}
+    	break;
+
     case 906: // Set Motor currents
     	for(uint8_t i = 0; i < DRIVES; i++)
     	{

Platform.cpp

@@ -131,6 +131,7 @@ void Platform::Init()
   standbyTemperatures = STANDBY_TEMPERATURES;
   activeTemperatures = ACTIVE_TEMPERATURES;
   coolingFanPin = COOLING_FAN_PIN;
+  turnHeatOn = HEAT_ON;
 
   webDir = WEB_DIR;
   gcodeDir = GCODE_DIR;
@@ -333,7 +334,7 @@ void Platform::SetHeater(int8_t heater, const float& power)
     return;
   
   byte p = (byte)(255.0*fmin(1.0, fmax(0.0, power)));
-  if(HEAT_ON == 0)
+  if(turnHeatOn == 0)
 	  p = 255 - p;
   if(heater == 0)
 	  analogWrite(heatOnPins[heater], p);

Platform.h

@@ -491,6 +491,7 @@ class Platform
   bool UsePID(int8_t heater);
   float HeatSampleTime();
   void CoolingFan(float speed);
+  void SetHeatOn(int8_t ho); //TEMPORARY - this will go away...
 
 //-------------------------------------------------------------------------------------------------------
   protected:
@@ -569,6 +570,7 @@ class Platform
   float standbyTemperatures[HEATERS];
   float activeTemperatures[HEATERS];
   int8_t coolingFanPin;
+  int8_t turnHeatOn;
 
 // Serial/USB
 
@@ -892,6 +894,11 @@ inline void Platform::CoolingFan(float speed)
 	analogWrite(coolingFanPin, (uint8_t)(speed*255.0));
 }
 
+inline void Platform::SetHeatOn(int8_t ho)
+{
+	turnHeatOn = ho;
+}
+
 
 //*********************************************************************************************************