usability of 3 lobe vs 4 lobe profile curve fix #7583

only:uaefi

firmware/controllers/engine_controller.cpp

@@ -520,11 +520,29 @@ PUBLIC_API_WEAK bool validateBoardConfig() {
   return true;
 }
 
+static bool validateGdi() {
+	auto lobes = engineConfiguration->hpfpCamLobes;
+	if (!lobes) {
+		return true;
+	}
+	int expectedLastLobeProfileAngle = 360 / lobes;
+  float actualLastAngle = config->hpfpLobeProfileAngle[HpfpLobeProfile_SIZE - 1];
+	if (expectedLastLobeProfileAngle != actualLastAngle) {
+		criticalError("Last HPFP angle expected %d got %f", expectedLastLobeProfileAngle, actualLastAngle);
+		return false;
+	}
+
+	return true;
+}
+
 // Returns false if there's an obvious problem with the loaded configuration
 bool validateConfigOnStartUpOrBurn() {
   if (!validateBoardConfig()) {
     return false;
   }
+  if (!validateGdi()) {
+    return false;
+  }
   if (config->dynoCarCarMassKg == 0) {
     setDynoDefaults();
   }

unit_tests/tests/test_hpfp.cpp

@@ -13,6 +13,8 @@ TEST(HPFP, Lobe) {
 	engineConfiguration->hpfpPeakPos = 123;
 	engineConfiguration->hpfpCamLobes = 3;
 
+  validateConfigOnStartUpOrBurn();
+
 	engine->triggerCentral.vvtPosition[0][0] = 40; // Bank 0
 	engine->triggerCentral.vvtPosition[0][1] = 80;
 	engine->triggerCentral.vvtPosition[1][0] =120; // Bank 1