Diff: main.h

Revision:

4:463abe5f5135

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.h	Thu May 05 09:18:01 2016 +0000
@@ -0,0 +1,186 @@
+/**
+@file main.h
+@brief Header file containing functions prototypes, defines and global variables for menu and pointer
+@brief Menu is construct using finit state mechine. 
+@brief The input for finit state mechine is the positer position. 
+@brief Revision 1.0. 
+@author JIANWEI CHEN
+@date   May 2016
+*/
+#ifndef MAIN_H
+#define MAIN_H
+
+#include "mbed.h"
+//        VCC, SCE, RST, D/C, MOSI,SCLK, LED
+N5110 lcd(PTE26,PTA0,PTC4,PTD0,PTD2,PTD1,PTC3);
+//                MOSI, MISO, SCK, CS
+SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd");
+
+FILE *fp; /*!< File pointer */
+
+DigitalOut red_led(PTA1);
+DigitalOut green_led(PTC2);
+InterruptIn button(PTB18);
+PwmOut buzzer (PTA2);
+
+////////////////////////////////////////////////////////
+// Variables
+////////////////////////////////////////////////////////
+/**
+Create ticker object for menu
+@brief ticker to control the speed of updating the menu
+*/
+Ticker menuTimer;
+
+volatile int g_menuTimer_flag = 0; /*!< Flag for menu ticker */
+volatile int g_button_flag = 0; /*!< Flag for button interrupt */
+
+/**State of menu
+@brief Variable control the state of menu
+@note state 0 - main menu
+@note state 1 - game level choosing menu
+@note state 2 - show highest score menu
+@note state 3 - game with easy level
+@note state 4 - game with hard level
+*/
+int state=0;
+
+int pointer_position=0;/*!< Variable control the position of pointer */
+
+/**struct for state
+*/
+struct State {
+    int nextState[3];  // array of next states
+};
+typedef const struct State STyp;
+
+STyp fsm[5] = {
+    {1,2,0}, // states chosen according to inputs(pointer position)
+    {3,4,0},
+    {0,0,0},
+    {0,0,0},
+    {0,0,0}
+};
+
+//////////////////////////////////////////////////////////////////
+// Functions
+//////////////////////////////////////////////////////////////////
+
+/**
+Menu isr function
+*/
+void menuTimer_isr();
+
+/**
+Initialise the program and lcd, mbed initial settings
+*/
+void init();
+
+/**
+Button interrupt isr function
+*/
+void button_isr();
+
+/**Drawing the pointer at (x,y)
+@brief Drawing the pointer image at (x,y) according to inputs
+@param x - x co-ordinate of lcd
+@param y - y co-ordinate of lcd
+@param fill - fill = 0 white, fill = 1 black
+*/
+void pointer_image(int x,int y,int fill);//0-white 1-black
+
+/** Move the pointer
+@brief Function to control the pointer according to joystick
+*/
+void pointer();
+
+
+/////////////////////////////////////////////////
+/// Function Definitions
+/////////////////////////////////////////////////
+void menuTimer_isr()
+{
+    g_menuTimer_flag = 1;
+}
+
+
+void button_isr()
+{
+    g_button_flag=1;
+}
+
+
+void pointer()
+{
+    updateJoystick(); // get joystick direction
+    if (joystick.direction==UP) {
+        if(pointer_position==0) { // pointer at the top
+            pointer_position=0;
+        } else {
+            pointer_position--;
+        }
+    } else if(joystick.direction==DOWN) {
+        if(pointer_position==1&&(state!=1)) { //only game level choosing menu have 3 pointer positions
+            pointer_position=1;
+        } else if (pointer_position==2&&(state==1)) {
+            pointer_position=2;
+        } else {
+            pointer_position++;
+        }
+    }
+
+    if(pointer_position==0) {
+        pointer_image(10,27,1); // draw pointer
+        pointer_image(10,35,0); // clear pointer at other positions
+        pointer_image(10,43,0);
+    } else if(pointer_position==1) {
+        pointer_image(10,27,0);
+        pointer_image(10,35,1);
+        pointer_image(10,43,0);
+    } else if(pointer_position==2) {
+        pointer_image(10,35,0);
+        pointer_image(10,43,1);
+    }
+
+}
+
+
+void pointer_image(int x,int y,int fill)
+{
+    if(fill==0) {// draw white pointer
+        lcd.drawLine(x,y,x-4,y+2,0);
+        lcd.drawLine(x,y,x-4,y-2,0);
+    } else { // draw black pointer
+        lcd.drawLine(x,y,x-4,y-2,1);
+        lcd.drawLine(x,y,x-4,y+2,1);
+    }
+}
+
+
+void init(){
+    wait(2.0);  // short delay for power to settle
+    // initialise sd card
+    fp = fopen("/sd/topscore.txt", "r");
+    fclose(fp);  // ensure you close the file after reading
+    lcd.init(); // initialise lcd
+    lcd.normalMode();      // normal colour mode
+    lcd.setBrightness(1.0); // put LED backlight on 100%
+    
+    lcd.printString("Calibrating",0,0);
+    lcd.printString("Joystick........",0,1);
+    lcd.printString("PLEASE DO NOT",0,3);
+    lcd.printString("MOVE JOYSTICK.....",0,4);
+    lcd.refresh();
+    calibrateJoystick();
+    wait(4.0);
+    
+    lcd.clear();
+    lcd.refresh();
+    button.mode(PullDown);
+    red_led=0;
+    green_led=0;
+    button.fall(&button_isr);
+    menuTimer.attach(&menuTimer_isr,0.1); // attach menu ticker
+    buzzer.period(1.0/4000.0);  // set buzzer period to 4 kKz
+}
+#endif
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