only: extracting isIgnVoltage() method

firmware/controllers/actuators/main_relay.cpp

@@ -1,12 +1,13 @@
 #include "pch.h"
 
 #include "main_relay.h"
+#include "ignition_controller.h"
 
 void MainRelayController::onSlowCallback() {
 #if EFI_MAIN_RELAY_CONTROL
 #if defined(IGN_KEY_DIVIDER)
     if (isAdcChannelValid(engineConfiguration->ignKeyAdcChannel)) {
-      hasIgnitionVoltage = Sensor::getOrZero(SensorType::IgnKeyVoltage) > 5;
+      hasIgnitionVoltage = isIgnVoltage();
     } else
 #endif // IGN_KEY_DIVIDER
     if (engineConfiguration->ignitionKeyDigitalPin != Gpio::Unassigned) {

firmware/controllers/ignition_controller.cpp

@@ -1,9 +1,13 @@
 #include "pch.h"
 
+bool isIgnVoltage() {
+  return Sensor::getOrZero(SensorType::BatteryVoltage) > 5;
+}
+
 void IgnitionController::onSlowCallback() {
 	// default to 0 if failed sensor to prevent accidental ign-on if battery
 	// input misconfigured (or the ADC hasn't started yet)
-	auto hasIgnVoltage = Sensor::getOrZero(SensorType::BatteryVoltage) > 5;
+	auto hasIgnVoltage = isIgnVoltage();
 
 	if (hasIgnVoltage) {
 		m_timeSinceIgnVoltage.reset();

firmware/controllers/ignition_controller.h

@@ -1,3 +1,5 @@
+// file ignition_controller.h
+
 #pragma once
 
 #include "engine_module.h"
@@ -12,3 +14,6 @@ private:
 	Timer m_timeSinceIgnVoltage;
 	bool m_lastState = false;
 };
+
+// USB power or vehicle power?
+bool isIgnVoltage();