Diff: main.cpp

Revision:

0:038ed656f129

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Mar 13 03:49:26 2015 +0000
@@ -0,0 +1,215 @@
+#include "mbed.h"
+#include "rtos.h"
+
+#include "uLCD_4DGL.h" // uLCD
+#include "wave_player.h" // Speaker
+#include "SDFileSystem.h" // SD card
+#include <mpr121.h> // Touchpad
+
+
+bool ArmedOnOff; // Global variable to Arm the alarm;
+int CurrentKey; // Global variable to display the current key value to the LCD
+int OldCurrentKey;
+int KeyCount = 0; //Keeps track of how many times in a row the key has been pressed
+int Trigger = 1; //Determining if the alarm has been triggered
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
+int num1; //The four digits of the passcode
+int num2;
+int num3;
+int num4;
+
+int Safety = 0; //Counter to check if correct passcode is entered
+
+
+SDFileSystem sd(p5, p6, p7, p8, "sd"); // MicroSD card
+
+AnalogIn IRout(p20); // IR Module
+
+AnalogOut DACout(p18); // Speaker / Wave Player
+wave_player waver(&DACout); // Speaker / Wave player
+
+uLCD_4DGL uLCD(p28, p27, p29); // used to create LCD object
+
+Mutex stdio_mutex; // Mutex for LCD thread
+ 
+InterruptIn interrupt(p26); // Create interrupt receiver object on pin 26
+ 
+I2C i2c(p9, p10); // Setup i2c bus on pins 9 and 10
+ 
+// constructor(i2c object, i2c address of the mpr121)
+Mpr121 mpr121(&i2c, Mpr121::ADD_VSS); // Mpr121 constructor
+
+// mpr121 keypad interrupt
+void fallInterrupt(){
+    OldCurrentKey = CurrentKey;
+    int key_code=0;
+    int i=0;
+    int value=mpr121.read(0x00);
+    value +=mpr121.read(0x01)<<8;
+    i=0;
+    for (i=0; i<12; i++) {
+        if (((value>>i)&0x01)==1) key_code=i+1;
+        }
+    led4=key_code & 0x01;
+    led3=(key_code>>1) & 0x01;
+    led2=(key_code>>2) & 0x01;
+    led1=(key_code>>3) & 0x01;
+    if(led1==0 & led2==0 & led3==0 & led4==1) //Convert recieved value from keypad
+        CurrentKey = 0;
+    if(led1==0 & led2==0 & led3==1 & led4==0)
+        CurrentKey = 1;
+    if(led1==0 & led2==0 & led3==1 & led4==1)
+        CurrentKey = 2;
+    if(led1==0 & led2==1 & led3==0 & led4==0)
+        CurrentKey = 3;
+    if(led1==0 & led2==1 & led3==0 & led4==1)
+        CurrentKey = 4;
+    if(led1==0 & led2==1 & led3==1 & led4==0)
+        CurrentKey = 5;
+    if(led1==0 & led2==1 & led3==1 & led4==1)
+        CurrentKey = 6;
+    if(led1==1 & led2==0 & led3==0 & led4==0)
+        CurrentKey = 7;
+    if(led1==1 & led2==0 & led3==0 & led4==1)
+        CurrentKey = 8;
+    if(led1==1 & led2==0 & led3==1 & led4==0)
+        CurrentKey = 9;
+    if(led1==1 & led2==0 & led3==1 & led4==1)
+        CurrentKey = 10;
+    if(led1==1 & led2==1 & led3==0 & led4==0)
+        CurrentKey = 11;
+    if(CurrentKey != OldCurrentKey & Trigger  == 1){ //Ensures that only four numbers are used at a time
+        KeyCount = KeyCount + 1;
+        if(KeyCount == 1)
+            num1 = CurrentKey;
+        if(KeyCount == 2)
+            num2 = CurrentKey;
+        if(KeyCount == 3)
+            num3 = CurrentKey;
+        if(KeyCount == 4){
+            num4 = CurrentKey;
+            Trigger = 0;
+            KeyCount = 0;
+        }
+    }
+}
+
+
+// uLCD thread
+void Armed(void const *args){ //Thread for initial state of the alarm
+    interrupt.fall(&fallInterrupt);
+    interrupt.mode(PullUp);
+    while(1){
+        if(Safety == 0){
+            stdio_mutex.lock();  // Mutex lock for LCD screen
+            if(!ArmedOnOff){
+                uLCD.locate(1,1); //The default state for the alarm
+                uLCD.printf("ALARM: ARMED   ");
+                uLCD.locate(1,5);
+                uLCD.printf("Enter Passcode: ");
+            }
+            stdio_mutex.unlock(); // Unlock mutex
+        }
+    }
+}
+
+void PassCode(void const *args){ //Thread to check passcode
+    interrupt.fall(&fallInterrupt);
+    interrupt.mode(PullUp);
+    while(1){
+        if(Trigger == 0){
+            stdio_mutex.lock();  // Mutex lock for LCD screen
+            uLCD.locate(1,7);
+            uLCD.printf("                     ");
+            uLCD.locate(1,8);
+            uLCD.printf("                     ");
+            if(num1 == 1 & num2 == 9 & num3 == 4 & num4 == 2){ //Checks to see if the correct key is entered, 1942
+                uLCD.locate(1,1);
+                uLCD.printf("ALARM: DISARMED"); //The disarmed state for the alarm upon entering the correct code
+                uLCD.locate(1,7);
+                uLCD.printf("%d %d %d %d",num1,num2,num3,num4);
+                uLCD.locate(1,8);
+                uLCD.printf("Take your item");
+                Safety = 1;
+                int countDown = 20;
+                while(countDown >=0){ // Countdown to when the alarm will re-arm
+                    uLCD.locate(1,9);
+                    uLCD.printf("ARMING IN %d     ", countDown);
+                    countDown--;
+                    Thread::wait(1000.0); // Wait 1 second
+                }
+                countDown = 20;
+                uLCD.locate(1,9);
+                uLCD.printf("                 "); //clears the lower screen
+                uLCD.locate(1,7);
+                uLCD.printf("           ");
+                uLCD.locate(1,8);
+                uLCD.printf("              ");
+                Safety = 0;
+            }
+            else {
+                uLCD.locate(1,7);
+                uLCD.printf("%d %d %d %d",num1,num2,num3,num4); //Displays the incorrect passcode waits 5 seconds for further entries
+                uLCD.locate(1,8);
+                uLCD.printf("INCORRECT");
+                Thread::wait(5000.0);
+                uLCD.locate(1,7);
+                uLCD.printf("           "); //clears the lower screen
+                uLCD.locate(1,8);
+                uLCD.printf("          ");
+            }
+            stdio_mutex.unlock(); // Unlock mutex
+            Trigger = 1;
+            Thread::wait(1000.0); // 10 second wait
+        }
+    }
+}
+
+
+void Alarm(void const *args) //Thread to sound alarm
+{
+    interrupt.fall(&fallInterrupt);
+    interrupt.mode(PullUp);
+    while(1){
+        if(ArmedOnOff==true & Safety == 0){
+            stdio_mutex.lock();  // Mutex lock for LCD screen
+            uLCD.locate(1,1);
+            uLCD.printf("ALARM: MISSING!"); //Sounds alarm if the correct code isn't entered and the object is missing
+            uLCD.locate(1,5);
+            uLCD.printf("Enter Passcode: ");
+            stdio_mutex.unlock(); // Unlock mutex
+            FILE *wave_file;
+            wave_file=fopen("/sd/myMusic/Alarm.wav","r");
+            waver.play(wave_file);
+            fclose(wave_file);
+
+            //Thread::wait(1000.0); // Wait 1 second
+        }
+    }
+}
+
+
+int main(){
+    Thread thread1(Alarm);
+    Thread thread3(Armed);
+    Thread thread4(PassCode);
+    interrupt.mode(PullUp);
+    interrupt.fall(&fallInterrupt);
+    
+    while(1){
+            
+
+        if (IRout < 0.5f){
+            //led1 = 1;
+            ArmedOnOff = true;
+        }
+        else {
+            ArmedOnOff = false;
+        }
+
+    }
+}
\ No newline at end of file