Initial fuel calcs

kartduino.ino

@@ -13,6 +13,8 @@ Need to calculate the req_fuel figure here, preferably in pre-processor macro
 #define engineStrokes 4 //Can be 2 stroke or 4 stroke, any other value will cause problems
 //**************************************************************************************************
 
+#include "utils.h"
+
 int req_fuel = ((engineCapacity / engineInjectorSize) / engineCylinders / engineStoich) * 100; // This doesn't seem quite correct, but I can't find why. It will be close enough to start an engine
 
 // Setup section
@@ -61,7 +63,7 @@ void loop()
   {
     //Always check for sync
     //Main loop runs within this clause
-    if hasSync
+    if (hasSync)
     {
     
     }

utils.h

@@ -0,0 +1,22 @@
+/*
+These are some utility functions and variables used through the main code
+*/
+
+//The following functions help determine the required fuel constant. For more information about these calculations, please refer to http://www.megamanual.com/v22manual/mfuel.htm
+int AIRDEN(int MAP, int temp)
+  {
+    
+  }
+  
+/*
+This functino retuns a pulsewidth time (in tenths of a ms) given the following:
+REQ_FUEL
+VE: Lookup from the main MAP vs RPM fuel table
+MAP: In KPa, read from the sensor
+GammaE: Sum of Enrichment factors (Cold start, acceleration). This is a multiplication factor (Eg to add 10%, this should be 110)
+injOpen: Injector open time. The time the injector take to open in tenths of a ms
+*/
+int PW(int REQ_FUEL, int VE, int MAP, int GammaE, int injOpen)
+  {
+    return REQ_FUEL * (VE/100) * (MAP/100) * (GammaE/100) + injOpen;
+  }