Diff: main.h

Revision:

0:075d80c9688d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.h	Thu May 05 09:35:12 2016 +0000
@@ -0,0 +1,164 @@
+/**
+@file main.h
+@brief University of Leeds
+@brief ELEC 2645 Embedded System Project
+@brief Header file containing functions prototypes, defines and global variables.
+@brief The initial documentation was given by Dr.Craig Evans
+@author Wang Luyu
+@date   May 2016
+*/
+
+#include "mbed.h"
+#include "N5110.h"
+
+// change this to alter tolerance of joystick direction
+#define DIRECTION_TOLERANCE 0.05
+
+/**  
+@namespace N5110 lcd
+@brief lcd connection
+@brief VCC - PTE26
+@brief SCE - PTA0
+@brief RST - PTC4
+@brief D/C - PTD0
+@brief MOSI - PTD2
+@brief SCLK - PTD1
+@brief LED - PTC3 
+*/
+//    VCC,SCE,RST,D/C,MOSI,SCLK,LED
+N5110 lcd (PTE26 , PTA0 , PTC4 , PTD0 , PTD2 , PTD1 , PTC3);
+
+
+/**  
+@namespace Yellow LED
+@brief LED shows the situation of the game
+@brief When the pacman 'eat' the 'food', the yellow LED would lit up
+*/
+// on-board LEDs
+Ticker ticker;
+DigitalOut yellow_led(PTC2);
+// Can also power (VCC) directly from VOUT (3.3 V) -
+// Can give better performance due to current limitation from GPIO pin
+
+
+/**  
+@namespace button
+@brief lcd pin connection
+*/
+// connections for joystick
+InterruptIn button(PTB11);
+/**
+@namespace ypot
+@brief The y axis potentiometer of joystick
+*/
+AnalogIn yPot(PTB2);
+/**
+@namespace xpot
+@brief The x axis potentiometer of joystick
+*/
+AnalogIn xPot(PTB3);
+
+int gameover_flag = 0;  /*!< set gameover flag */
+
+int x_square = rand()%(82-2)+2;  /*!< set the x axis of the point */
+
+int y_square = rand()%(46-2)+2;  /*!< set the y axis of the point */
+
+//0-up 1-down 2-left 3-right
+int direction = 0;  /*!< set joystick direction */
+
+// define pacman-x
+int Pacman_X = 8;        /*!< set the x axis initial value centre pixel of the pacman */
+// define pacman-y
+int Pacman_Y = 22;       /*!< set the y axis initial value centre pixel of the pacman */
+
+// define wall-x
+int Wall_X = 0;        /*!< set the x axis initial value of the wall */
+// define wall-y
+int Wall_Y = 0;        /*!< set the y axis initial value of the wall */
+
+// timer to regularly read the joystick
+Ticker pollJoystick;
+// Serial for debug
+
+int score = 0; /*!< set the initial score value */
+
+volatile int printFlag = 0; /*!< set flag of printing */
+
+/**  
+@namespace Joystickbutton
+@brief Define the joysitck button 
+@brief When joystick button = true, you press the button
+@brief Your score would show on the screen
+*/
+volatile int joystickbutton = false;
+
+/**  
+@namespace Joystickbutton
+@brief Use the joystick button to see the currently score
+*/
+void joystickbutton_isr();
+
+/**  
+@namespace Eat
+@brief Define the pixel that touch the point to 'eat'
+@brief All around of the pacman can 'eat' the 'food'
+*/
+void eat();
+
+/**  
+@namespace Food
+@brief Define the point
+@brief When the point is eaten, it would appear another one
+@brief The eaten food would disappeared
+*/
+void food();
+
+// create enumerated type (0,1,2,3 etc. for direction)
+// could be extended for diagonals etc.
+enum DirectionName {
+    UP,
+    DOWN,
+    LEFT,
+    RIGHT,
+    CENTRE,
+    UNKNOWN
+};
+
+// struct for Joystick
+typedef struct JoyStick Joystick;
+struct JoyStick {
+    float x;    // current x value
+    float x0;   // 'centred' x value
+    float y;    // current y value
+    float y0;   // 'centred' y value
+    int button; // button state (assume pull-down used, so 1 = pressed, 0 = unpressed)
+    DirectionName direction;  // current direction
+};
+
+/**  
+@namespace Joystick
+@brief Create struct variable
+*/
+// create struct variable
+Joystick joystick;
+
+/**  
+@namespace CalibrateJoystick
+@brief Set calibrateJoystick 
+*/
+// function prototypes
+void calibrateJoystick();
+
+/**  
+@namespace UpdateJoystick
+@brief Set the speed of updateJoystick
+*/
+void updateJoystick();
+
+/**  
+@namespace YellowLED
+@brief Set-up the on-board LEDs
+*/
+// set-up the on-board LEDs
+void yellow();