Project 2 - Implement the Code for controlling the retraction and extension of Airplane’s landing gear
/*
* project2.c
*
* C program that demonstrates the control of an airplane's landing gear using a Finite State Machine (FSM).
* Author: Nitish
*/
#include
// Enumeration to represent the states of the landing gear FSM
enum LandingGearState {
GEAR_UP,
GEAR_DOWN,
GEAR_TRANSITION,
GEAR_FAULT
};
// Function declarations
int getGearSwitchState();
void retractGear();
void extendGear();
int transitionComplete();
void handleGearFault();
int main() {
enum LandingGearState currentState = GEAR_UP;
int gearSwitchState = 0; // 0 for up, 1 for down
while (1) { // Infinite loop for FSM
// Check the state of the gear switch (0 for up, 1 for down)
gearSwitchState = getGearSwitchState();
// FSM logic
switch (currentState) {
case GEAR_UP:
if (gearSwitchState == 1) {
// Transition to the transition state
currentState = GEAR_TRANSITION;
retractGear();
}
break;
case GEAR_DOWN:
if (gearSwitchState == 0) {
// Transition to the transition state
currentState = GEAR_TRANSITION;
extendGear();
}
break;
case GEAR_TRANSITION:
// Wait for the transition to complete
if (transitionComplete()) {
// Determine the next state based on the gear switch
if (gearSwitchState == 0) {
currentState = GEAR_DOWN;
} else {
currentState = GEAR_UP;
}
}
break;
case GEAR_FAULT:
// Handle gear fault condition
handleGearFault();
break;
}
}
return 0;
}
// Simulated functions to interact with the landing gear
int getGearSwitchState() {
// Simulated function to read the position of the gear switch
// Returns 0 for up, 1 for down (for simplicity)
return 0; // Replace with actual sensor reading
}
void retractGear() {
// Simulated function to retract the landing gear
printf("Retracting landing gear...\n");
// Implement the actual control logic here
}
void extendGear() {
// Simulated function to extend the landing gear
printf("Extending landing gear...\n");
// Implement the actual control logic here
}
int transitionComplete() {
// Simulated function to check if the gear transition is complete
// Returns 1 when transition is complete, 0 otherwise
return 1; // Replace with actual sensor or timer logic
}
void handleGearFault() {
// Simulated function to handle gear fault condition
printf("Landing gear fault! Emergency procedures...\n");
// Implement emergency procedures here
}