Diff: main.cpp

Revision:

24:e41b5098ed0a

Parent:

22:fea9289f31b3

Child:

25:2fff6d1b4eb6

--- a/main.cpp	Fri Sep 02 03:24:44 2016 +0000
+++ b/main.cpp	Fri Sep 02 04:20:47 2016 +0000
@@ -22,6 +22,7 @@
 // sensors
 #define SUPPLY_VOLTAGE 3.3f;
 AnalogIn TempSensor(PA_0);
+InterruptIn door(D15);
 
 // convert fp32 to 4 byte string
 typedef union
@@ -45,8 +46,46 @@
 
 bool getDoorState()
 {
-    // TODO: Jamie, you need to implement this!
-    return true;
+    return door.read();
+}
+
+void doorStateChangeHandler() 
+{
+    static uint8_t seqid = 0;
+    bool doorState = getDoorState();
+    
+    DataBlockPacket doorEvent;
+                            
+    // set sequence id (the sequence id is configured as incoming sequence id + 1)
+    doorEvent.setSequenceID(seqid++);
+    
+    // set source id (the source id is the current device ID)
+    doorEvent.setSourceID(aloha.getDeviceID());
+    
+    // set destination id (send to base station by default)
+    doorEvent.setDestinationID(0x0);
+    
+    // set source type (door state)
+    doorEvent.setSourceType(0x1);
+    
+    // set payload type (boolean)
+    doorEvent.setPayloadType(0x8);
+    
+    // copy door state (first byte)
+    doorEvent.setData(0, doorState);
+    
+    // calculate crc
+    doorEvent.generateCrc();
+    
+    // serialize and send it
+    uint8_t buffer[8];
+    memset(buffer, 0x0, sizeof(buffer));
+    
+    // copy bytes into buffer
+    doorEvent.serialize(buffer);
+    
+    // send to aloha transceiver
+    aloha.send(buffer, 8, 0x0);
 }
 
 void serialInterruptHandler() {
@@ -692,6 +731,10 @@
     // configure button interrupt
     button.fall(automaticPacketTransmit);
     
+    // configure door state
+    door.rise(doorStateChangeHandler); //Rising edge occurs when the "door opens"
+    door.fall(doorStateChangeHandler); //Falling edge occurs when the "door closes"
+    
     while(1) {
         SIP.poll();
         aloha.poll();