Diff: main.cpp

Revision:

0:2e7cf203f9a5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Jan 25 22:07:49 2016 +0000
@@ -0,0 +1,85 @@
+#include "mbed.h"
+#include "C12832.h"  /* for the LCD */
+#include <string>
+
+/* 
+This program allows the device to receive notifications from the MQTT server
+*/
+
+/* Global Variables */
+DigitalOut myled(LED_GREEN);
+Serial pc(USBTX, USBRX); /* serial port to PC */
+C12832 shld_lcd (D11, D13, D12, D7, D10);   /* LCD */
+
+
+PwmOut spk (D6);
+
+//connections for RGB LED
+DigitalOut r_led (LED1);    //Red indicates temp read off
+DigitalOut g_led (LED2);    //green indicates temp read on and printing
+DigitalOut b_led (LED3);    //Blue should only be on when first turned on before any human interaction  
+
+
+    InterruptIn sw2_int (PTC6); //Button interrupts to be used to stop/resume temperature print out          
+    InterruptIn sw3_int (PTA4); 
+    
+    static volatile int sw2_trig;   //allows for randon access, changing value
+    static volatile int sw3_trig;
+
+ 
+int main() {
+    
+    pc.baud (38400); 
+    
+    shld_lcd.printf("Device ready \r\n");
+    wait(2);
+    shld_lcd.cls(); // clear the display
+    
+    while(1) {
+
+        if(pc.readable()) 
+        {
+            char c;
+            char buffer[128];
+
+            
+            int bufSize = sizeof(buffer);
+            
+            pc.gets(buffer, 30);
+            
+
+            shld_lcd.printf("'%s'\n", buffer); //Prints when data is received i.e. notification  
+
+            if (bufSize > 2)
+            {
+                /* speaker code taken from https://developer.mbed.org/users/4180_1/notebook/using-a-speaker-for-audio-output/ */
+                // two tone police siren effect -  two periods or two frequencies
+                // increase volume - by changing the PWM duty cycle
+                int i = 0;
+                for (i=0; i<26;) 
+                {
+                    spk.period(1.0/969.0);
+                    spk = float(i)/50.0;
+                    wait(.5);
+                    spk.period(1.0/800.0);
+                    wait(.5); 
+                    i+=2;
+                }
+                
+                spk = 0; //stops speaker
+                wait(2);
+                shld_lcd.cls(); // clear the display
+                
+                /* green */
+                r_led = 2; 
+                b_led = 2;
+                g_led = 0;
+                //wait(2.5);
+            }
+                /* green */
+                r_led = 2; 
+                b_led = 0;
+                g_led = 2;
+        }
+    }
+}