Diff: main.cpp

Revision:

0:1e8a4f2f850b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Jan 25 00:47:17 2016 +0000
@@ -0,0 +1,141 @@
+#include "mbed.h"
+#include "C12832.h"                     /* for the LCD */
+#include "LM75B.h"                      /* for the temperature sensor */
+#include "MMA7660.h"
+#include "stdio.h"   
+
+
+
+DigitalOut xr_led (LED1); /* red LED */
+DigitalOut xg_led (LED2); /* green LED */
+DigitalOut xb_led (LED3); /* blue LED  */
+
+
+PwmOut intr_alarm(D6) ;
+
+InterruptIn sw2_int (PTC6);             /* interrupt for sw2 button on mbed */
+InterruptIn sw3_int (PTA4);              /* interrupt for sw3 button on mbed */
+
+Serial host (USBTX, USBRX);             /* to-host UART via OpenSDAv2 *///
+
+MMA7660 MMA(D14, D15); /* accelerometer */
+
+C12832 shld_lcd (D11, D13, D12, D7, D10);   /* LCD on the shield (128x32) */
+
+static volatile int triggered = 0;      /* variable to decide whether alarm has been triggred */
+
+
+float x,y,z;          /* float variables for acceleromter */
+
+
+
+void sw3_interrupt (void)   /* this method disarms the motion detector alarm  */
+{
+    triggered = 0;
+    xr_led = 1;
+ xg_led  =1;
+ xb_led  =1;
+ 
+ shld_lcd.cls();
+ shld_lcd.locate(0,0);
+ shld_lcd.printf ("Disarmed");
+ 
+}
+
+
+void sw2_interrupt (void)           /* this method checks if the sw2 buttin has been pressed.If so It arsm the motion sendsor  */
+{
+   if (triggered == 0) { x=MMA.x();
+    y=MMA.y();
+    z=MMA.z();
+    
+    triggered = 1;
+    
+    shld_lcd.cls();
+    shld_lcd.locate(0,0);
+    shld_lcd.printf ("Armed");
+    
+
+    } 
+    }
+
+/* Main code stars here  */
+
+
+
+int main (void ) 
+{
+
+shld_lcd.printf ("Disarmed");     /* LCD Shows that alarm is initially disarmed  */
+
+
+ xr_led = 1;                       /* LED lights are off to begin with   */
+ xg_led  =1;
+ xb_led  =1;
+ 
+
+    
+    sw2_int.mode (PullUp);              /*   */
+    sw2_int.fall (&sw2_interrupt);
+    
+    sw3_int.mode (PullUp);
+    sw3_int.fall (&sw3_interrupt);
+    
+    
+  while (true) {     /*  check if there is a difference in acclorometer position */
+    
+    if (triggered ==1) {     /* when armed   */
+      float px = MMA.x(); float py = MMA.y(); float pz = MMA.z();         
+       float diff = abs(x-px) + abs(y-py) + abs(z-pz);
+        if (diff>0.3f) { /* difference check occurs here  */
+        
+        shld_lcd.locate(0,0);
+        shld_lcd.printf ("Intruder Detected");   /* intruduer detected LCD code   */
+        
+        
+        /* Alarm triggered here once intruder has been detected  */
+          
+          while (triggered ==1){          
+        for (float i=2000.0; i<10000.0; i+=100) {
+                        float f = i;
+                        intr_alarm.period(1.0/f);
+                        intr_alarm=0.7;
+                        wait(0.005);
+                }
+                
+   /* Different colours for LED when Intruder detected   */             
+            intr_alarm=0.0;
+            xr_led = 0;
+           
+            
+            wait(0.5);          
+            
+            xr_led = 1;
+           
+            
+            
+            
+            xg_led  =0;
+           
+            
+            wait(0.5);               /* led particular light colour displays for 0.5 secs  */
+            
+            xg_led  =1;
+            
+            
+            
+            xb_led  =0;
+             
+             
+             wait(0.5);
+             
+             xb_led  =1;
+           
+             }
+            }                
+                
+  
+     }
+     
+     }
+}
\ No newline at end of file