Flex fuel boost adder

reference/speeduino.ini

@@ -153,8 +153,8 @@ page = 1
 ;Page 2 is all general settings (Previously part of page 1)
 ;--------------------------------------------------
 page = 2
-      unused2-1  = scalar, U08,       0,         "ms",       0.1,       0.0,   0.0,    25.5,      1
+      flexBoostLow  = scalar, S08,       0,         "kPa",      1.0,       0.0,   -127,    127,       0
-      unused2-2  = scalar, U08,       1,         "ms",       0.1,       0.0,   0.0,    25.5,      1
+      flexBoostHigh = scalar, U08,       0,         "kPa",      1.0,       0.0,   0.0,    255,       0
       asePct     = scalar, U08,       2,         "%",        1.0,       0.0,   0.0,    95.0,      0
       aseCount   = scalar, U08,       3,         "s",        1.0,       0.0,   0.0,    255,       0
       wueRates   = array,  U08,       4, [10],   "%",        1.0,       0.0,   0.0,    255,      0
@@ -715,6 +715,8 @@ page = 10
     defaultValue = flexFuelHigh,163
     defaultValue = flexAdvLow,  0
     defaultValue = flexAdvHigh, 13
+    defaultValue = flexBoostLow,0
+    defaultValue = flexBoostHigh,0
     defaultValue = fuelPumpPin, 0
     defaultValue = fanPin,      0
     defaultValue = iacCLminDuty,0
@@ -922,6 +924,8 @@ menuDialog = main
     flexFuelHigh = "Fuel % to be used for the highest ethanol reading (Typically 163% for 100% ethanol)"
     flexAdvLow = "Additional advance (in degrees) at lowest ethanol reading (Typically 0)"
     flexAdvHigh = "Additional advance (in degrees) at highest ethanol reading (Typically 10-20 degrees)"
+    flexBoostHigh = "This amount that will be added to the boost target at E100. Between E0 and E100, the amount added to the boost target will be scaled from 0 to this value"
+    flexBoostLow = "Typically should be set to 0, but can be used to lower boost at E0 if the bast tune is setup with some ethanol"
 
     flatSArm    = "The RPM switch point that determines whether an eganged clutch is for launch control or flat shift. Below this figure, an engaged clutch is considered to be for launch, above this figure an active clutch input will be considered a flat shift. This should be set at least several hundred RPM above idle"
     flatSSoftWin= "The number of RPM below the flat shift point where the softlimit will be applied (aka Soft limit window). Recommended values are 200-1000"
@@ -1032,24 +1036,27 @@ menuDialog = main
         field = "Sensor Frequency"
         field = "Fuel Multiplier%"
         field = "Additional advance"
+        field = "Additional boost", { boostEnabled }
         #field = "#Temp Sense"
         #field = "Sensor PW"
         #field = "Fuel Temp"
 
        dialog = flexl, ""
-        field = "Low"
+        field = "Low (E0)"
         field = "", flexFreqLow,   { flexEnabled }
         field = "", flexFuelLow,   { flexEnabled }
-        field = "", flexAdvLow, { flexEnabled }
+        field = "", flexAdvLow,    { flexEnabled }
+        field = "", flexBoostLow,  { boostEnabled }
         #field = "Low"
         #field = "", ff_tpw0, { flexEnabled && (fueltemp1 == 1)}
         #field = "", ff_temp0, { flexEnabled && (fueltemp1 == 1)}
 
        dialog = flexh, ""
-        field = "High"
+        field = "High (E100)"
         field = "", flexFreqHigh,   { flexEnabled }
         field = "", flexFuelHigh,   { flexEnabled }
-        field = "", flexAdvHigh, { flexEnabled }
+        field = "", flexAdvHigh,    { flexEnabled }
+        field = "", flexBoostHigh,  { boostEnabled }
         #field = "High"
         #field = "", ff_tpw1, { flexFuel && (fueltemp1 == 1)}
         #field = "", ff_temp1, { flexFuel && (fueltemp1 == 1)}

speeduino/auxiliaries.ino

@@ -64,6 +64,14 @@ void boostControl()
     MAPx100 = currentStatus.MAP * 100;
 
     boost_cl_target_boost = get3DTableValue(&boostTable, currentStatus.TPS, currentStatus.RPM) * 2; //Boost target table is in kpa and divided by 2
+    //If flex fuel is enabled, there can be an adder to the boost target based on ethanol content
+    if(configPage1.flexEnabled)
+    {
+      int16_t boostAdder = (((int16_t)configPage1.flexBoostHigh - (int16_t)configPage1.flexBoostLow) * currentStatus.ethanolPct) / 100;
+      boostAdder = boostAdder + configPage1.flexBoostLow; //Required in case flexBoostLow is less than 0
+      boost_cl_target_boost = boost_cl_target_boost + boostAdder;
+    }
+
     boostTargetx100 = boost_cl_target_boost  * 100;
     currentStatus.boostTarget = boost_cl_target_boost >> 1; //Boost target is sent as a byte value to TS and so is divided by 2
     if(currentStatus.boostTarget == 0) { TIMSK1 &= ~(1 << OCIE1A); digitalWrite(pinBoost, LOW); return; } //Set duty to 0 and turn off timer compare if the target is 0

speeduino/globals.h

@@ -240,8 +240,8 @@ struct statuses currentStatus; //The global status object
 //This mostly covers off variables that are required for fuel
 struct config1 {
 
-  byte unused1; //Cold cranking pulsewidth modifier. This is added to the fuel pulsewidth when cranking under a certain temp threshold (ms)
+  int8_t flexBoostLow;
-  byte unused2; //Warm cranking pulsewidth modifier. This is added to the fuel pulsewidth when cranking (ms)
+  byte flexBoostHigh;
   byte asePct;  //Afterstart enrichment (%)
   byte aseCount; //Afterstart enrichment cycles. This is the number of ignition cycles that the afterstart enrichment % lasts for
   byte wueValues[10]; //Warm up enrichment array (10 bytes)