Diff: main.cpp

Revision:

0:0fbe9794df10

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed May 04 13:06:09 2016 +0000
@@ -0,0 +1,235 @@
+//---------------------------- IHSIAN MULLA  -------------------------------------------//
+//---------------------------- PRESENTS..... ------------------------------------------//
+// ------------ THE ISHTENDO ORIGINAL GAMING SYSTEM ----------------------------------//
+
+
+//----------------LIBRARIES-----------//////
+#include "N5110.h"
+#include "joystick.h"
+#include "mbed.h"
+#include "TMP102.h"
+#include "beep.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+// Buzzer connceted to PWM pin
+Beep buzzer(PTC10);
+
+//On-board RGB led (only need one)
+DigitalOut r_led(LED_RED);
+
+// connections for joystick
+AnalogIn xPot(PTB3);
+AnalogIn yPot(PTB2);
+DigitalIn Jbutton(PTB11);
+InterruptIn button(PTB18);// Connection for external button
+
+//         VCC,    SCE,   RST,   D/C,   MOSI,  SCLK,   LED
+N5110 lcd (PTE26 , PTA0 , PTC4 , PTD0 , PTD2 , PTD1 , PTC3);
+
+// Ticker functions for joystick and menu
+Ticker MenuRefresh;
+Ticker pollJoystick;
+
+Joystick joystick;
+
+// ---- Global Variables---//
+int nextmenu=0; /*!< initialises chekc statement for single transition */
+int menu = 0; /*!< initialises menu switch statement */
+int pointer = 0; /*!< initialises pointer switch statement */
+
+volatile int g_button_flag = 0; // sets flag in the ISR
+volatile int g_MenuRefresh_flag=0; // sets the flag in the ISR
+
+//--Functions--//
+void error();
+void Snake();
+void Draw();
+void Temp();
+void Intro();
+void MenuOptions();
+void SwitchMenu();
+void MenuRefresh_isr();
+void button_isr();
+
+
+//--------------------  MAIN  ------------------------------------------//
+
+int main()
+{
+    lcd.init(); // intialise LCD
+    lcd.setBrightness(0.5);
+    lcd.normalMode();
+    Intro();
+    calibrateJoystick();  // get centred values of joystick
+    pollJoystick.attach(&updateJoystick,0.25);  // read joystick 10 times per second
+    SwitchMenu();
+}
+
+void Intro()
+{
+    lcd.printString("ishtendo",10,2);
+    lcd.printString("vI",70,5);
+    lcd.printString(".",45,3);
+    buzzer.beep(1000,0.5);
+    wait(1.0);
+    lcd.printString(".",55,3);
+    buzzer.beep(1000,0.5);
+    wait(1.0);
+    lcd.printString(".",65,3);
+    buzzer.beep(1000,0.5);
+    wait(1.0);
+    buzzer.beep(1500,0.5);
+    lcd.clear();
+    lcd.refresh();
+}
+
+void MenuOptions()
+{
+    lcd.printString("Snake",30,0.5);
+    lcd.printString("Draw",33,2.5);
+    lcd.printString("Temp Sensor",5,4.5);
+}
+
+//switch statement to allow for selection and option highlight user interface
+void SwitchMenu()
+{
+    button.fall(&button_isr);
+    button.mode(PullDown);
+    MenuRefresh.attach(&MenuRefresh_isr,0.5); //attach ticker to prevent the board sleeping and becoming unresponsive
+
+    while(1) {
+        switch (menu) {
+            case 0: // Snake Selection
+                lcd.clear();
+                MenuOptions();
+                lcd.printString("<",75,0.5);//
+                // check if flag i.e. interrupt has occured
+                if (g_button_flag) {
+                    g_button_flag = 0;  // if it has, clear the flag
+                    Snake();
+                }
+                if(joystick.direction==DOWN)
+                    pointer=1;
+                else if(joystick.direction==UP)
+                    pointer=2;
+                else
+                    pointer=0;
+                //implements a switch statement within a switch statement to allow user interface from a joystick
+                //to transition between the 3 states to highlight and select a game option
+                switch(pointer) {
+                    case 0:
+                        menu=3;
+                        nextmenu=0;
+                        break;
+                    case 1:
+                        menu=3;
+                        nextmenu=2;
+                        break;
+                    case 2:
+                        menu=3;
+                        nextmenu=1;
+                        break;
+                }
+                break;
+            case 1 : // Draw Selection
+                lcd.clear();
+                MenuOptions();
+                lcd.printString("<",75,2.5);
+                // check if flag i.e. interrupt has occured
+                if (g_button_flag) {
+                    g_button_flag = 0;  // if it has, clear the flag
+                    Draw();
+                }
+                if(joystick.direction==DOWN)
+                    pointer=1;
+                else if(joystick.direction==UP)
+                    pointer=2;
+                else
+                    pointer=0;
+                switch(pointer) {
+                    case 0:
+                        menu=3;
+                        nextmenu=1;
+                        break;
+                    case 1:
+                        menu=3;
+                        nextmenu=0;
+                        break;
+                    case 2:
+                        menu=3;
+                        nextmenu=2;
+                        break;
+                }
+                break;
+            case 2 : //Temperature Sensor Selection
+                lcd.clear();
+                MenuOptions();
+                lcd.printString("<",75,4.5);
+                // check if flag i.e. interrupt has occured
+                if (g_button_flag) {
+                    g_button_flag = 0;  // if it has, clear the flag
+                    Temp();
+                }
+                if(joystick.direction==DOWN) {
+                    pointer=1;
+
+                } else if (joystick.direction==UP) {
+                    pointer=2;
+
+                } else {
+                    pointer=0;
+                }
+                switch(pointer) {
+                    case 0:
+                        menu=3;
+                        nextmenu=2;
+                        break;
+                    case 1:
+                        menu=3;
+                        nextmenu=1;
+                        break;
+                    case 2:
+                        menu=3;
+                        nextmenu=0;
+                        break;
+                }
+                break;
+            case 3: //Checks to prevent multiple transitions of menu cursor (one transition per joystick movement)
+                if(joystick.direction==CENTRE) {
+                    menu=nextmenu;
+                } else {
+                    menu=3;
+                }
+                break;
+            default:
+                error();  //invalid state - call error routine
+                // or could jump to starting state i.e. state = 0
+                break;
+        }
+        sleep();
+    }
+}
+
+//  event-triggered interrupt
+void button_isr()
+{
+    g_button_flag = 1;   // set flag in ISR
+
+}
+//Timer isr
+void MenuRefresh_isr()
+{
+    g_MenuRefresh_flag =1;
+}
+
+//  error message -  flashing red led
+void error()
+{
+    while(1) {
+        r_led = 0;
+        wait(0.2);
+        r_led = 1;
+        wait(0.2);
+    }
+}