main.h

00001 /**
00002 @file main.h
00003 @brief Header file containing functions prototypes, defines and global variables.
00004 @author John A. C. Richards
00005 @date   April 20156
00006 */
00007  
00008 #ifndef MAIN_H
00009 #define MAIN_H
00010 
00011 #include "mbed.h"
00012 #include "N5110.h" 
00013 #include "string" 
00014 #include "SDFileSystem.h"
00015 
00016 #define DIRECTION_TOLERANCE 0.05f 
00017 #define maxPlayerSize 1000 
00018 
00019 /**  
00020 @namespace red_led
00021 @brief GPIO output for game-over LED
00022 */
00023 DigitalOut red_led(LED_RED);
00024 
00025 /**  
00026 @namespace green_led
00027 @brief GPIO output for game-playing LED
00028 */
00029 DigitalOut green_led(LED_GREEN);
00030 
00031 /**  
00032 @namespace N5110_lcd 
00033 @brief GPIO output for Nokia screen
00034 */
00035 N5110 lcd (PTE26 , PTA0 , PTC4 , PTD0 , PTD2 , PTD1 , PTC3);
00036 
00037 /**  
00038 @namespace yellowLED
00039 @brief GPIO output for collision warning
00040 */
00041 DigitalOut yellowLED(PTA2);
00042 
00043 /**  
00044 @namespace greenLED
00045 @brief GPIO output for eating food
00046 */
00047 DigitalOut greenLED(PTC2);
00048 
00049 /**  
00050 @namespace xPot
00051 @brief GPIO output for joystick in x plane
00052 */
00053 AnalogIn xPot(PTB2);
00054 
00055 /**  
00056 @namespace yPot
00057 @brief GPIO output for joystick in y plane
00058 */
00059 AnalogIn yPot(PTB3);
00060 
00061 /**  
00062 @namespace buzzer
00063 @brief GPIO output for buzzer
00064 */
00065 PwmOut buzzer(PTA1);
00066 
00067 /**  
00068 @namespace volume
00069 @brief GPIO output for potentiometer
00070 */
00071 AnalogIn volume(PTB10);
00072 
00073 
00074 /**  
00075 @namespace sd
00076 @brief GPIO output for SDcard
00077 */
00078 SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd"); // MOSI, MISO, SCK, CS
00079 
00080 
00081 
00082 volatile int playerLength ; /*!<length of player*/
00083 
00084 volatile int playerPositionsX [maxPlayerSize]; /*!<max player size x*/
00085 volatile int playerPositionsY [maxPlayerSize]; /*!<max player size y*/
00086 
00087 volatile int areaWidth  = 41; /*!<width of game map*/
00088 volatile int areaHeight  = 19; /*!<height of game map*/
00089 
00090 /**
00091 @brief Sets flag for bringing the next frame
00092 */
00093 void nextFrame(); //go to next frame function
00094 
00095 /**
00096 @brief Sets the bool timerDone as true 
00097 */
00098 void timerTrigger(); //function to set bool as true to be used again
00099 
00100 
00101 /**
00102 @brief Timeout which keeps the program at one point for a while
00103 @param seconds Time delayed, in seconds
00104 */
00105 void screenDelay(float seconds); // timeout function
00106 
00107 /**
00108 @brief Turns off external green LED
00109 */
00110 void greenOff (); 
00111 
00112 
00113 /**
00114 @brief Checks is snake has hit wall or self
00115 @param x - set x plane
00116 @param y - set y plane
00117 @returns true or false
00118 */
00119 bool checkCollision(int x,int y); 
00120 
00121 /**
00122 @brief read default positions of the joystick to calibrate later readings
00123 */
00124 void calibrateJoystick();
00125 
00126 /**
00127 @brief read current joystick values relative to calibrated values and calculate direction depending on x,y values
00128 */
00129 void updateJoystick();
00130 
00131 /**
00132 @brief Contains all of the snake code 
00133 */
00134 void snake();
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00159 #endif