add out of bounds and comments

collar.cpp

@@ -37,13 +37,17 @@ uint8_t DevAddr[4] = {0x26, 0x02, 0x12, 0xB6};
 
 /************************** Example Begins Here ***********************************/
 // Data Packet to Send to TTN
-unsigned char loraData[50] = {"hello LoRa"};
+unsigned char loraData[Fenceless_CollarResponse_size+1] = {0};
 
 // How many times data transfer should occur, in seconds
-// const unsigned int sendInterval = 30;
 const unsigned int sendInterval = 3000;
 
-// Pinout for Adafruit Feather 32u4 LoRa
+/****************************************************
+ * Arduino drivers
+ * - LoRaWAN
+ * - GPS
+ * - Software Serial
+ ***************************************************/
 TinyLoRa lora = TinyLoRa(2, 10, 9);
 TinyGPSPlus gps;
 SoftwareSerial ss(6, 7);
@@ -81,7 +85,7 @@ void clear_verts() {
  * - https://wrf.ecse.rpi.edu//Research/Short_Notes/pnpoly.html
  ***************************************************/
 int pnpoly(int nvert, float *vertx, float *verty, float testx, float testy)
-{ //from stack overflow, check that coordinate is within polygon boundary
+{ 
   int i, j, c = 0;
   for (i = 0, j = nvert-1; i < nvert; j = i++) {
     if ( ((verty[i]>testy) != (verty[j]>testy)) &&
@@ -146,20 +150,6 @@ void import_protobuf(uint8_t *protobuffer, uint32_t size) {
       push_vert(m.coord0.x, m.coord0.y);
   }
 }
-/****************************************************
- * live test of protobuf
- ***************************************************/
-void test() {
-  Serial.println("Testing protobuf");
-  uint8_t buffer[100] = {0};
-  Fenceless_Coordinates m = Fenceless_Coordinates_init_zero;
-  pb_ostream_t stream = pb_ostream_from_buffer(buffer, sizeof(buffer));
-  int status = pb_encode(&stream, Fenceless_Coordinates_fields, &m);
-  if(!status){
-    Serial.println("Failed to encode");
-  }
-  import_protobuf(buffer, sizeof(buffer));
-}
 /****************************************************
  * Initialize values
  ***************************************************/
@@ -184,19 +174,6 @@ void setup()
   ***************************************************/
   pinMode(LED_BUILTIN, OUTPUT);
 
-  // Initialize GPS - GPS does not work indoors - This will block until GPS available 
-  // Serial.println("Starting GPS");
-  // while(!gps.location.isValid()) {
-  //   while(ss.available()>0) {
-  //     gps.encode(ss.read());
-  //   }
-  //   if (millis() > 5000 && gps.charsProcessed() < 10)
-  //   {
-  //     Serial.println(F("No GPS detected: check wiring."));
-  //     while(true);
-  //   }
-  // }
-
   push_vert(44.55818, -123.28341);
   push_vert(44.55818, -123.28332);
   push_vert(44.558308, -123.28332);
@@ -222,8 +199,6 @@ void setup()
   Serial.println("OK");
 }
 
-const int16_t PROGRESS_BAR_COUNT = 50;
-const int16_t START_OF_LINE = 13;
 /****************************************************
  * Read a byte from GPS over software serial
  ***************************************************/
@@ -238,6 +213,9 @@ int read_gps() {
 /****************************************************
  * Set cursor to beginning of line and clear it
  ***************************************************/
+const int16_t PROGRESS_BAR_COUNT = 50;
+const int16_t START_OF_LINE = 13;
+
 void clear_line() {
   Serial.write(START_OF_LINE);
   for(int i=0;i<PROGRESS_BAR_COUNT;i++)
@@ -272,7 +250,9 @@ void loop()
   }
   else if(state == WAITING_GPS) {
     int got_data = read_gps();
-
+    /****************************************************
+     * loading bar animation
+     ***************************************************/
     if(got_data) {
       if(loopCounter%100==0)
         Serial.write('.');
@@ -286,12 +266,29 @@ void loop()
     }
   }
   else if(state == VERIFYING_GPS) {
+    /****************************************************
+     * if no data has been received from the gps in 5 seconds
+     * then the GPS is probably not connected properly
+     ***************************************************/
+    if (millis() > 5000 && gps.charsProcessed() < 10)
+    {
+      Serial.println(F("No GPS detected: check wiring."));
+      while(true);
+    }
+    /****************************************************
+     * only send to LoRaWAN if valid GPS coordinates are
+     * available
+     ***************************************************/
     if(gps.location.isValid())
       state = SENDING_LORA;
     else
       state = WAITING_GPS;
   }
   else if(state == SENDING_LORA) {
+    /****************************************************
+     * encode device information into a buffer using
+     * protobuf
+     ***************************************************/
     Fenceless_CollarResponse coord;
     coord.loc.x = gps.location.lat();
     coord.loc.y = gps.location.lng();
@@ -301,18 +298,32 @@ void loop()
     stream  = pb_ostream_from_buffer(loraData, sizeof(loraData));
     pb_encode(&stream, Fenceless_CollarResponse_fields, &coord);
 
+    /****************************************************
+     * send encoded buffer over LoRaWAN
+     ***************************************************/
     Serial.println("Sending LoRa Data...");
     lora.sendData(loraData, stream.bytes_written, lora.frameCounter);
 
     Serial.print("Frame Counter: ");
     Serial.println(lora.frameCounter);
+
+    /****************************************************
+     * set reference time for LoRaWAN transmission delay
+     ***************************************************/
     startTime = millis();
 
     state = WAITING_LORA;
   }
   else if(state == WAITING_LORA) {
+    /****************************************************
+     * don't block the GPS from reading here
+     ***************************************************/
     read_gps();
-    
+
+    /****************************************************
+     * if enough seconds have been delayed then move to
+     * next state
+     ***************************************************/
     if(millis()/1000 - startTime >= sendInterval) {
       state = LORA_DONE;
     }

gateway

@@ -1 +1 @@
-Subproject commit d39b4e8494780050fe9875ee2f97a40122e6e9ac
+Subproject commit cf51b0da696ff3c838a504a547dc9a287a54afb4

prototest.cpp

@@ -49,6 +49,7 @@ int main() {
   Fenceless_CollarResponse collar = Fenceless_CollarResponse_init_zero;
   collar.loc.x = 200;
   collar.loc.y = 100;
+  collar.oob = 1;
   stream = pb_ostream_from_buffer(buffer, sizeof(buffer));
 
   err = pb_encode(&stream, Fenceless_CollarResponse_fields, &collar);
@@ -63,6 +64,7 @@ int main() {
   // check result 
   assert(collar0.loc.x == collar.loc.x);
   assert(collar0.loc.y == collar.loc.y);
+  assert(collar0.oob == collar.oob);
 
   // encode 10 coordinates
   Fenceless_Coordinates coords;