// lightsys.h - TRAFFIC LIGHT SYSTEM DECLARATIONS

// MAINTENANCE HISTORY
// DATE            PROGRAMMER AND DETAILS
// 09-11-02        JS      Original

//-----------------------------------------------------------------------------

#ifdef __cplusplus
        extern "C" {
#endif

//-----------------------------------------------------------------------------

// TRAFFIC LIGHT COLOURS

typedef enum {
        RED,
        AMBER,
        GREEN
} Colour;

//-----------------------------------------------------------------------------

// FUNCTION DECLARATIONS

void Display (Colour northColour, Colour eastColour,
        Colour southColour, Colour westColour);
                                // Display traffic light colour
void InitApp ();
                                // Initiate application
void Tick ();
                                // Process clock tick
void VehicleWaiting (int northWait, int eastWait,
        int southWait, int westWait);
                                // Change in vehicle waiting status

//-----------------------------------------------------------------------------

#ifdef __cplusplus
        }
#endif