lights.h

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#ifndef LIGHTS_H_
#define LIGHTS_H_
 
#include <stdint.h>
#include <stdbool.h>

#define PIN_LIGHT1_RED      10
#define PIN_LIGHT1_GREEN    4    
#define PIN_LIGHT2_RED      5
#define PIN_LIGHT2_GREEN    3
#define PIN_LIGHT3_RED      2
#define PIN_LIGHT3_GREEN    1
#define PIN_LIGHT4_RED      14
#define PIN_LIGHT4_GREEN    13

#define NUM_LIGHTS          4

typedef enum {
    RED,                 
    YELLOW,               
    GREEN,                 
    OFF                  
} LightState;

typedef struct {
    LightState state;        
    int carCount;           
    int redPin;           
    int greenPin;           
    uint32_t timerEnd;      
} TrafficLight;

extern TrafficLight Light[NUM_LIGHTS];
 
// Function Prototypes
void map_lights(void);
void lights_update(const TrafficLight *light);
void lights_set_green(int lightNum1, int lightNum2);
uint32_t lights_set_yellow(int lightNum1, int lightNum2);
uint32_t lights_set_red(int lightNum1, int lightNum2);
void lights_set_initial_state(void);
void lights_init(void);
 
#endif /* LIGHTS_H_ */