diff --git a/firmware/config/stm32f4ems/efifeatures.h b/firmware/config/stm32f4ems/efifeatures.h
index e0a94daf6d..77c56dda37 100644
--- a/firmware/config/stm32f4ems/efifeatures.h
+++ b/firmware/config/stm32f4ems/efifeatures.h
@@ -77,6 +77,8 @@
 //#define EFI_POTENTIOMETER FALSE
 #define EFI_POTENTIOMETER TRUE
 
+#define EFI_ANALOG_SENSORS TRUE
+
 #define EFI_MAX_31855 TRUE
 
 #define EFI_MCP_3208 FALSE
diff --git a/firmware/console/eficonsole.c b/firmware/console/eficonsole.c
index f6bf2eef94..4e083d381c 100644
--- a/firmware/console/eficonsole.c
+++ b/firmware/console/eficonsole.c
@@ -108,7 +108,7 @@ static void sayHello(void) {
 	printMsg(&logger, "EFI_SIGNAL_EXECUTOR_HW_TIMER=%d", EFI_SIGNAL_EXECUTOR_HW_TIMER);
 #endif
 
-#ifdef EFI_SHAFT_POSITION_INPUT
+#if defined(EFI_SHAFT_POSITION_INPUT) || defined(__DOXYGEN__)
 	printMsg(&logger, "EFI_SHAFT_POSITION_INPUT=%d", EFI_SHAFT_POSITION_INPUT);
 #endif
 #ifdef EFI_INTERNAL_ADC
diff --git a/firmware/console/status_loop.cpp b/firmware/console/status_loop.cpp
index 560b9bc608..218a413116 100644
--- a/firmware/console/status_loop.cpp
+++ b/firmware/console/status_loop.cpp
@@ -43,10 +43,7 @@
 #include "speed_density.h"
 
 #include "advance_map.h"
-#if EFI_TUNER_STUDIO
 #include "tunerstudio.h"
-#endif /* EFI_TUNER_STUDIO */
-
 #include "fuel_math.h"
 #include "main_trigger_callback.h"
 #include "engine_math.h"
@@ -161,7 +158,7 @@ void printSensors(Engine *engine) {
 }
 
 void printState(Engine *engine, int currentCkpEventCounter) {
-#if EFI_SHAFT_POSITION_INPUT
+#if EFI_SHAFT_POSITION_INPUT || defined(__DOXYGEN__)
 	printSensors(engine);
 
 	engine_configuration_s *engineConfiguration = engine->engineConfiguration;
@@ -434,7 +431,7 @@ static THD_WORKING_AREA(tsThreadStack, UTILITY_THREAD_STACK_SIZE);
 #if EFI_TUNER_STUDIO
 
 void updateTunerStudioState(Engine *engine, TunerStudioOutputChannels *tsOutputChannels) {
-#if EFI_SHAFT_POSITION_INPUT
+#if EFI_SHAFT_POSITION_INPUT || defined(__DOXYGEN__)
 	int rpm = getRpmE(engine);
 #else
 	int rpm = 0;
diff --git a/firmware/console/tunerstudio/tunerstudio.h b/firmware/console/tunerstudio/tunerstudio.h
index ddf8e00f96..89f2fe7f28 100644
--- a/firmware/console/tunerstudio/tunerstudio.h
+++ b/firmware/console/tunerstudio/tunerstudio.h
@@ -8,6 +8,9 @@
 #ifndef TUNERSTUDIO_H_
 #define TUNERSTUDIO_H_
 
+#include "main.h"
+
+#if EFI_TUNER_STUDIO
 #include "tunerstudio_configuration.h"
 #include "engine.h"
 
@@ -55,4 +58,6 @@ typedef pre_packed struct
 				unsigned char value;
 			} TunerStudioWriteValueRequest;
 
+#endif /* EFI_TUNER_STUDIO */
+
 #endif /* TUNERSTUDIO_H_ */
diff --git a/firmware/console/tunerstudio/tunerstudio_algo.cpp b/firmware/console/tunerstudio/tunerstudio_algo.cpp
index a9769b84d4..9b55a743dd 100644
--- a/firmware/console/tunerstudio/tunerstudio_algo.cpp
+++ b/firmware/console/tunerstudio/tunerstudio_algo.cpp
@@ -58,6 +58,8 @@
 #define TRUE (!FALSE)
 #endif
 
+#if EFI_TUNER_STUDIO
+
 TunerStudioState tsState;
 TunerStudioOutputChannels tsOutputChannels;
 /**
@@ -158,3 +160,5 @@ void handleTestCommand(void) {
 	 */
 	tunerStudioWriteData((const uint8_t *) " ts_p_alive\r\n", 8);
 }
+
+#endif
diff --git a/firmware/controllers/PwmTester.cpp b/firmware/controllers/PwmTester.cpp
index 75383f4a0d..53bdb2dfbe 100644
--- a/firmware/controllers/PwmTester.cpp
+++ b/firmware/controllers/PwmTester.cpp
@@ -7,6 +7,9 @@
  */
 
 #include "main.h"
+
+#if EFI_PWM_TESTER
+
 #include "PwmTester.h"
 #include "EfiWave.h"
 #include "pwm_generator_logic.h"
@@ -39,3 +42,5 @@ void initPwmTester(void) {
 	addConsoleActionI("pwmtest", startPwmTest);
 // un-comment this to start pwm test on start up 	startPwmTest(1000);
 }
+
+#endif
diff --git a/firmware/controllers/core/le_functions.cpp b/firmware/controllers/core/le_functions.cpp
index f75ca0f93c..e28cfba976 100644
--- a/firmware/controllers/core/le_functions.cpp
+++ b/firmware/controllers/core/le_functions.cpp
@@ -6,6 +6,9 @@
  */
 
 #include "main.h"
+
+#if EFI_FSIO
+
 #include "le_functions.h"
 #include "allsensors.h"
 #include "rpm_calculator.h"
@@ -68,3 +71,5 @@ void setFsioExt(engine_configuration_s *engineConfiguration, int index, brain_pi
 void setFsio(engine_configuration_s *engineConfiguration, int index, brain_pin_e pin, const char * exp) {
 	setFsioExt(engineConfiguration, index, pin, exp, 0);
 }
+
+#endif /* EFI_FSIO */
diff --git a/firmware/controllers/core/logic_expression.cpp b/firmware/controllers/core/logic_expression.cpp
index ad0baecab8..e04dcd07fd 100644
--- a/firmware/controllers/core/logic_expression.cpp
+++ b/firmware/controllers/core/logic_expression.cpp
@@ -14,6 +14,9 @@
  */
 
 #include "main.h"
+
+#if EFI_FSIO
+
 #include "logic_expression.h"
 #include "le_functions.h"
 
@@ -422,3 +425,5 @@ void parseUserFsio(DECLARE_ENGINE_PARAMETER_F) {
 		}
 	}
 }
+
+#endif /* EFI_FSIO */
diff --git a/firmware/controllers/engine_controller.cpp b/firmware/controllers/engine_controller.cpp
index fc3a364666..8dadf04be2 100644
--- a/firmware/controllers/engine_controller.cpp
+++ b/firmware/controllers/engine_controller.cpp
@@ -110,7 +110,7 @@ Engine * engine = &_engine;
 
 static msg_t csThread(void) {
 	chRegSetThreadName("status");
-#if EFI_SHAFT_POSITION_INPUT
+#if EFI_SHAFT_POSITION_INPUT || defined(__DOXYGEN__)
 	while (true) {
 		int rpm = getRpm();
 		int is_cranking = isCrankingR(rpm);
@@ -194,6 +194,7 @@ static void cylinderCleanupControl(Engine *engine) {
 	}
 }
 
+#if EFI_FSIO
 static LECalculator calc;
 extern LEElement * fsioLogics[LE_COMMAND_COUNT];
 
@@ -233,6 +234,102 @@ static void setPinState(io_pin_e ioPin, LEElement *element, Engine *engine) {
 	}
 }
 
+static void showFsio(const char *msg, LEElement *element) {
+	if (msg != NULL)
+		scheduleMsg(&logger, "%s:", msg);
+	while (element != NULL) {
+		scheduleMsg(&logger, "action %d: fValue=%f iValue=%d", element->action, element->fValue, element->iValue);
+		element = element->next;
+	}
+	scheduleMsg(&logger, "<end>");
+}
+
+static void showFsioInfo(void) {
+	scheduleMsg(&logger, "sys used %d/user used %d", sysPool.getSize(), userPool.getSize());
+	showFsio("a/c", acRelayLogic);
+	showFsio("fuel", fuelPumpLogic);
+	showFsio("fan", radiatorFanLogic);
+	showFsio("alt", alternatorLogic);
+
+	for (int i = 0; i < LE_COMMAND_COUNT; i++) {
+		char * exp = boardConfiguration->le_formulas[i];
+		if (exp[0] != 0) {
+			/**
+			 * in case of FSIO user interface indexes are starting with 0, the argument for that
+			 * is the fact that the target audience is more software developers
+			 */
+			scheduleMsg(&logger, "FSIO #%d [%s] at %s@%dHz value=%f", i, exp,
+					hwPortname(boardConfiguration->fsioPins[i]), boardConfiguration->fsioFrequency[i],
+					engineConfiguration2->fsioLastValue[i]);
+//			scheduleMsg(&logger, "user-defined #%d value=%f", i, engine->engineConfiguration2->fsioLastValue[i]);
+			showFsio(NULL, fsioLogics[i]);
+		}
+	}
+	for (int i = 0; i < LE_COMMAND_COUNT; i++) {
+		float v = boardConfiguration->fsio_setting[i];
+		if (!cisnan(v)) {
+			scheduleMsg(&logger, "user property #%d: %f", i + 1, v);
+		}
+	}
+}
+
+static void setFsioSetting(float indexF, float value) {
+	int index = indexF;
+	if (index < 0 || index >= LE_COMMAND_COUNT) {
+		scheduleMsg(&logger, "invalid index %d", index);
+		return;
+	}
+	engineConfiguration->bc.fsio_setting[index] = value;
+	showFsioInfo();
+}
+
+static void setFsioFrequency(int index, int frequency) {
+	index--;
+	if (index < 0 || index >= LE_COMMAND_COUNT) {
+		scheduleMsg(&logger, "invalid index %d", index);
+		return;
+	}
+	boardConfiguration->fsioFrequency[index] = frequency;
+	scheduleMsg(&logger, "Setting FSIO frequency %d on #%d", frequency, index + 1);
+}
+
+static void setFsioPin(const char *indexStr, const char *pinName) {
+	int index = atoi(indexStr) - 1;
+	if (index < 0 || index >= LE_COMMAND_COUNT) {
+		scheduleMsg(&logger, "invalid index %d", index);
+		return;
+	}
+	brain_pin_e pin = parseBrainPin(pinName);
+	// todo: extract method - code duplication with other 'set_xxx_pin' methods?
+	if (pin == GPIO_INVALID) {
+		scheduleMsg(&logger, "invalid pin name [%s]", pinName);
+		return;
+	}
+	boardConfiguration->fsioPins[index] = pin;
+	scheduleMsg(&logger, "FSIO pin #%d [%s]", (index + 1), hwPortname(pin));
+}
+
+static void setUserOutput(const char *indexStr, const char *quotedLine, Engine *engine) {
+	int index = atoi(indexStr) - 1;
+	if (index < 0 || index >= LE_COMMAND_COUNT) {
+		scheduleMsg(&logger, "invalid index %d", index);
+		return;
+	}
+	char * l = unquote((char*) quotedLine);
+	if (strlen(l) > LE_COMMAND_LENGTH - 1) {
+		scheduleMsg(&logger, "Too long %d", strlen(l));
+		return;
+	}
+
+	scheduleMsg(&logger, "setting user out #%d to [%s]", index + 1, l);
+	strcpy(engine->engineConfiguration->bc.le_formulas[index], l);
+	// this would apply the changes
+	parseUserFsio(PASS_ENGINE_PARAMETER_F);
+	showFsioInfo();
+}
+
+#endif /* EFI_FSIO */
+
 static void onEvenyGeneralMilliseconds(Engine *engine) {
 	/**
 	 * We need to push current value into the 64 bit counter often enough so that we do not miss an overflow
@@ -249,6 +346,8 @@ static void onEvenyGeneralMilliseconds(Engine *engine) {
 	engine->watchdog();
 	engine->updateSlowSensors();
 
+#if EFI_FSIO
+
 	for (int i = 0; i < LE_COMMAND_COUNT; i++) {
 		handleFsio(engine, i);
 	}
@@ -270,6 +369,7 @@ static void onEvenyGeneralMilliseconds(Engine *engine) {
 	if (boardConfiguration->fanPin != GPIO_UNASSIGNED) {
 //		setPinState(FAN_RELAY, radiatorFanLogic, engine);
 	}
+#endif
 
 	updateErrorCodes();
 
@@ -337,100 +437,6 @@ static void printAnalogInfo(void) {
 
 static THD_WORKING_AREA(csThreadStack, UTILITY_THREAD_STACK_SIZE);	// declare thread stack
 
-static void showFsio(const char *msg, LEElement *element) {
-	if (msg != NULL)
-		scheduleMsg(&logger, "%s:", msg);
-	while (element != NULL) {
-		scheduleMsg(&logger, "action %d: fValue=%f iValue=%d", element->action, element->fValue, element->iValue);
-		element = element->next;
-	}
-	scheduleMsg(&logger, "<end>");
-}
-
-static void showFsioInfo(void) {
-	scheduleMsg(&logger, "sys used %d/user used %d", sysPool.getSize(), userPool.getSize());
-	showFsio("a/c", acRelayLogic);
-	showFsio("fuel", fuelPumpLogic);
-	showFsio("fan", radiatorFanLogic);
-	showFsio("alt", alternatorLogic);
-
-	for (int i = 0; i < LE_COMMAND_COUNT; i++) {
-		char * exp = boardConfiguration->le_formulas[i];
-		if (exp[0] != 0) {
-			/**
-			 * in case of FSIO user interface indexes are starting with 0, the argument for that
-			 * is the fact that the target audience is more software developers
-			 */
-			scheduleMsg(&logger, "FSIO #%d [%s] at %s@%dHz value=%f", i, exp,
-					hwPortname(boardConfiguration->fsioPins[i]), boardConfiguration->fsioFrequency[i],
-					engineConfiguration2->fsioLastValue[i]);
-//			scheduleMsg(&logger, "user-defined #%d value=%f", i, engine->engineConfiguration2->fsioLastValue[i]);
-			showFsio(NULL, fsioLogics[i]);
-		}
-	}
-	for (int i = 0; i < LE_COMMAND_COUNT; i++) {
-		float v = boardConfiguration->fsio_setting[i];
-		if (!cisnan(v)) {
-			scheduleMsg(&logger, "user property #%d: %f", i + 1, v);
-		}
-	}
-
-}
-
-static void setFsioSetting(float indexF, float value) {
-	int index = indexF;
-	if (index < 0 || index >= LE_COMMAND_COUNT) {
-		scheduleMsg(&logger, "invalid index %d", index);
-		return;
-	}
-	engineConfiguration->bc.fsio_setting[index] = value;
-	showFsioInfo();
-}
-
-static void setFsioFrequency(int index, int frequency) {
-	index--;
-	if (index < 0 || index >= LE_COMMAND_COUNT) {
-		scheduleMsg(&logger, "invalid index %d", index);
-		return;
-	}
-	boardConfiguration->fsioFrequency[index] = frequency;
-	scheduleMsg(&logger, "Setting FSIO frequency %d on #%d", frequency, index + 1);
-}
-
-static void setFsioPin(const char *indexStr, const char *pinName) {
-	int index = atoi(indexStr) - 1;
-	if (index < 0 || index >= LE_COMMAND_COUNT) {
-		scheduleMsg(&logger, "invalid index %d", index);
-		return;
-	}
-	brain_pin_e pin = parseBrainPin(pinName);
-	// todo: extract method - code duplication with other 'set_xxx_pin' methods?
-	if (pin == GPIO_INVALID) {
-		scheduleMsg(&logger, "invalid pin name [%s]", pinName);
-		return;
-	}
-	boardConfiguration->fsioPins[index] = pin;
-	scheduleMsg(&logger, "FSIO pin #%d [%s]", (index + 1), hwPortname(pin));
-}
-
-static void setUserOutput(const char *indexStr, const char *quotedLine, Engine *engine) {
-	int index = atoi(indexStr) - 1;
-	if (index < 0 || index >= LE_COMMAND_COUNT) {
-		scheduleMsg(&logger, "invalid index %d", index);
-		return;
-	}
-	char * l = unquote((char*) quotedLine);
-	if (strlen(l) > LE_COMMAND_LENGTH - 1) {
-		scheduleMsg(&logger, "Too long %d", strlen(l));
-		return;
-	}
-
-	scheduleMsg(&logger, "setting user out #%d to [%s]", index + 1, l);
-	strcpy(engine->engineConfiguration->bc.le_formulas[index], l);
-	// this would apply the changes
-	parseUserFsio(PASS_ENGINE_PARAMETER_F);
-	showFsioInfo();
-}
 
 static void setInt(const int offset, const int value) {
 	int *ptr = (int *) (&((char *) engine->engineConfiguration)[offset]);
@@ -490,7 +496,7 @@ void initEngineContoller(Engine *engine) {
 	}
 #endif /* EFI_WAVE_ANALYZER */
 
-#if EFI_SHAFT_POSITION_INPUT
+#if EFI_SHAFT_POSITION_INPUT || defined(__DOXYGEN__)
 	/**
 	 * there is an implicit dependency on the fact that 'tachometer' listener is the 1st listener - this case
 	 * other listeners can access current RPM value
@@ -585,16 +591,18 @@ void initEngineContoller(Engine *engine) {
 		}
 	}
 
+#if EFI_FSIO
 	addConsoleActionSSP("set_fsio", (VoidCharPtrCharPtrVoidPtr) setUserOutput, engine);
 	addConsoleActionSS("set_fsio_pin", (VoidCharPtrCharPtr) setFsioPin);
 	addConsoleActionII("set_fsio_frequency", (VoidIntInt) setFsioFrequency);
+	addConsoleActionFF("set_fsio_setting", setFsioSetting);
+	addConsoleAction("fsioinfo", showFsioInfo);
+#endif
 
 	addConsoleActionSS("set_float", (VoidCharPtrCharPtr) setFloat);
 	addConsoleActionII("set_int", (VoidIntInt) setInt);
 	addConsoleActionI("get_float", getFloat);
 	addConsoleActionI("get_int", getInt);
 
-	addConsoleActionFF("set_fsio_setting", setFsioSetting);
-	addConsoleAction("fsioinfo", showFsioInfo);
 	initEval(engine);
 }
diff --git a/firmware/controllers/idle_thread.cpp b/firmware/controllers/idle_thread.cpp
index c044611e84..aa31c56286 100644
--- a/firmware/controllers/idle_thread.cpp
+++ b/firmware/controllers/idle_thread.cpp
@@ -32,6 +32,8 @@
 #include "engine_configuration.h"
 #include "engine.h"
 
+#if EFI_IDLE_CONTROL || defined(__DOXYGEN__)
+
 static THD_WORKING_AREA(ivThreadStack, UTILITY_THREAD_STACK_SIZE);
 
 /**
@@ -152,3 +154,5 @@ void startIdleThread(Engine *engine) {
 	addConsoleActionI("set_idle_pwm", setIdleValvePwm);
 	addConsoleActionIP("set_idle_enabled", (VoidIntVoidPtr) setIdleControlEnabled, engine);
 }
+
+#endif
diff --git a/firmware/controllers/ignition_central.c b/firmware/controllers/ignition_central.c
index d6821569f1..717d85795a 100644
--- a/firmware/controllers/ignition_central.c
+++ b/firmware/controllers/ignition_central.c
@@ -20,6 +20,9 @@
  */
 
 #include "main.h"
+
+#if EFI_ENGINE_CONTROL || defined(__DOXYGEN__)
+
 #include "ignition_central.h"
 #include "io_pins.h"
 #include "signal_executor.h"
@@ -37,3 +40,5 @@ void initIgnitionCentral(void) {
 		outputPinRegisterExt2(getPinName(pin), pin, boardConfiguration->ignitionPins[i], &boardConfiguration->ignitionPinMode);
 	}
 }
+
+#endif
diff --git a/firmware/controllers/injector_central.cpp b/firmware/controllers/injector_central.cpp
index 27c6858377..6469e22826 100644
--- a/firmware/controllers/injector_central.cpp
+++ b/firmware/controllers/injector_central.cpp
@@ -20,6 +20,8 @@
  * If not, see <http://www.gnu.org/licenses/>.
  */
 
+// todo: merge with ignition_central and rename this file?
+
 #include "main.h"
 
 #if EFI_ENGINE_CONTROL || defined(__DOXYGEN__)
diff --git a/firmware/controllers/sensors/map.cpp b/firmware/controllers/sensors/map.cpp
index d955b4fdb0..a5edc307c6 100644
--- a/firmware/controllers/sensors/map.cpp
+++ b/firmware/controllers/sensors/map.cpp
@@ -6,6 +6,8 @@
 #include "error_handling.h"
 #include "map.h"
 
+#if EFI_ANALOG_SENSORS || defined(__DOXYGEN__)
+
 extern engine_configuration_s * engineConfiguration;
 
 /**
@@ -67,3 +69,5 @@ float getBaroPressure(void) {
 	float voltage = getVoltageDivided(engineConfiguration->baroSensor.hwChannel);
 	return decodePressure(voltage, &engineConfiguration->baroSensor);
 }
+
+#endif
diff --git a/firmware/controllers/trigger/trigger_central.cpp b/firmware/controllers/trigger/trigger_central.cpp
index 32e32acf81..2dfb120d4d 100644
--- a/firmware/controllers/trigger/trigger_central.cpp
+++ b/firmware/controllers/trigger/trigger_central.cpp
@@ -6,6 +6,9 @@
  */
 
 #include "main.h"
+
+#if EFI_SHAFT_POSITION_INPUT || defined(__DOXYGEN__)
+
 #include "trigger_central.h"
 #include "trigger_decoder.h"
 #include "main_trigger_callback.h"
@@ -306,3 +309,5 @@ void initTriggerCentral(Engine *engine) {
 	initHistogram(&triggerCallback, "all callbacks");
 #endif /* EFI_HISTOGRAMS */
 }
+
+#endif
diff --git a/firmware/controllers/trigger/trigger_decoder.cpp b/firmware/controllers/trigger/trigger_decoder.cpp
index 63a30d6cdf..54df1d3f76 100644
--- a/firmware/controllers/trigger/trigger_decoder.cpp
+++ b/firmware/controllers/trigger/trigger_decoder.cpp
@@ -19,6 +19,9 @@
  */
 
 #include "main.h"
+
+#if EFI_SHAFT_POSITION_INPUT || defined(__DOXYGEN__)
+
 #include "obd_error_codes.h"
 #include "trigger_decoder.h"
 #include "cyclic_buffer.h"
@@ -445,3 +448,4 @@ void initTriggerDecoder(void) {
 #endif
 }
 
+#endif
diff --git a/firmware/hw_layer/hardware.cpp b/firmware/hw_layer/hardware.cpp
index bec6f5fe90..359991dd26 100644
--- a/firmware/hw_layer/hardware.cpp
+++ b/firmware/hw_layer/hardware.cpp
@@ -273,7 +273,7 @@ void initHardware(Logging *logger, Engine *engine) {
 	// todo: figure out better startup logic
 	initTriggerCentral(engine);
 
-#if EFI_SHAFT_POSITION_INPUT
+#if EFI_SHAFT_POSITION_INPUT || defined(__DOXYGEN__)
 	initShaftPositionInputCapture();
 #endif /* EFI_SHAFT_POSITION_INPUT */
 
diff --git a/firmware/hw_layer/trigger_input.cpp b/firmware/hw_layer/trigger_input.cpp
index 0a732fdce4..52ae2506fa 100644
--- a/firmware/hw_layer/trigger_input.cpp
+++ b/firmware/hw_layer/trigger_input.cpp
@@ -8,7 +8,7 @@
 
 #include "main.h"
 
-#if EFI_SHAFT_POSITION_INPUT
+#if EFI_SHAFT_POSITION_INPUT || defined(__DOXYGEN__)
 
 #include "trigger_input.h"
 #include "wave_analyzer_hw.h"
diff --git a/unit_tests/efifeatures.h b/unit_tests/efifeatures.h
index ee203869fe..41f47b244e 100644
--- a/unit_tests/efifeatures.h
+++ b/unit_tests/efifeatures.h
@@ -30,4 +30,6 @@
 #define EFI_SHAFT_POSITION_INPUT TRUE
 #define EFI_ENGINE_CONTROL TRUE
 
+#define EFI_ANALOG_SENSORS TRUE
+
 #endif /* EFIFEATURES_H_ */