Diff: main.cpp

Revision:

0:df7639368358

diff -r 000000000000 -r df7639368358 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Jan 25 18:15:39 2016 +0000
@@ -0,0 +1,125 @@
+/** 
+    CO657 Assessment 5 - Aggregation and Visualisation - SmartPlant
+    https://moodle.kent.ac.uk/2015/mod/resource/view.php?id=190889
+
+    Plant Code End point device.
+    Reads from LM75B temperature device and sends over Xbee to broker device.
+    Receives commands from broker and frontend. These commands effect the speaker and the RGB light.
+
+    Copyright (C) Frederick Harrington(fh98) and Harry Jones(hj80), University Of Kent
+    24/01/2016 **/
+
+/** Libraries used **/
+#include "mbed.h"
+#include "C12832.h"
+#include "LM75B.h"
+
+/** Hardware declarations used **/
+LM75B tempSen (D14, D15);
+PwmOut light (D9);
+C12832 lcd (D11, D13, D12, D7, D10);
+Serial xbee (D1, D0);
+PwmOut spkr(D6);
+InterruptIn sw2_int (PTC6);
+char* name = "Plant1";
+static volatile int sw2_trig;
+int spkr_Alrt;
+
+//Interrupt function
+void sw2_interrupt (void) {
+    sw2_trig = 1;
+}
+
+/** Main method **/
+int main() {
+    //Method declarations 
+    double temp = tempSen.read(); 
+    double average = 0.0;
+    int counter = 1.0;
+    double last = 0.0;
+    double change = 0.0;
+    double sum = 0.0;      
+    spkr.period(0.5);
+    sw2_int.mode (PullUp);
+    sw2_int.fall (&sw2_interrupt);
+    
+    //Main Infinate Loop
+    while(true) { 
+        wait(1.0);
+        //Read temp from sensor
+        temp = tempSen.read();
+        //Print temperature over Xbee
+        xbee.printf("%.2f\r\n", temp);
+        
+        //Calculations for average   
+        sum += temp;
+        average = sum / counter;
+        counter++;
+        
+        //Displaying to LCD
+        lcd.cls();
+        lcd.locate(1,1);
+        lcd.printf("P1");
+        lcd.locate(32,1);
+        lcd.printf("Temp: %.2fC\r\n", temp);
+        lcd.locate(26,11);
+        lcd.printf("Average: %.2fC\r\n", average);
+        lcd.locate(14,21);
+        //Displays either no change, increase or decrease.
+        if(last > temp) {
+            change = last - temp;
+            lcd.printf("Temp Increase By %.2f", change);
+        } else if(temp < last) {
+            change = temp - last;
+            lcd.printf("Temp Decreased By %.2f", change);
+        } else {
+            lcd.printf("No Temperature Change"); 
+        }
+        //Record the last sent temperature
+        last = temp;       
+        
+        //Checks for commands and sets either the speaker or RBG light.
+        if(xbee.readable()){
+            //Get the command from the broker.
+            char com = xbee.getc();
+            
+            switch(com){
+            case 'a': case 'A':
+                light = 1.0;
+                break;
+            case 'b': case 'B':
+                light = 0.0;
+                break;
+            case 'c':case 'C':
+                spkr = 1.0;
+                spkr_Alrt = 1;
+                break;
+            case 'd': case 'D':
+                spkr = 0.0;
+                spkr_Alrt = 0; 
+                break;
+            default :
+                break;
+            }
+        }
+        //Reseting triggers on the press of SW2
+        if (sw2_trig) {
+            spkr_Alrt = 0;
+            spkr = 0.0;
+            sw2_trig = 0;
+        }
+        //Speaker implementations         
+        if(spkr_Alrt == 1) {
+            for (float i=2000.0; i<10000.0; i+=100) {
+                spkr.period(1.0/i);
+                spkr=0.5;
+                wait(0.02); 
+            }
+        }
+        wait(5.0);
+    }       
+}       
+        
+        
+           
+    
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