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sessionm21 2020-05-13 03:23:32 +01:00
parent 9571d988fb
commit 683ce890fb
1 changed files with 74 additions and 22 deletions

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@ -48,13 +48,19 @@ TinyLoRa lora = TinyLoRa(2, 10, 9);
TinyGPSPlus gps;
SoftwareSerial ss(6, 7);
// Pinout for Adafruit Feather M0 LoRa
//TinyLoRa lora = TinyLoRa(3, 8, 4);
/****************************************************
* Track each pair of X and Y coordinates
* - arrays are used by the pnpoly function
***************************************************/
const uint8_t N_POLY_MAX=100;
float polyx[N_POLY_MAX];
float polyy[N_POLY_MAX];
int n_poly=0;
/****************************************************
* Add a coordinate to the arrays
* - stores a total of N_POLY_MAX pairs
***************************************************/
int push_vert(float x, float y) {
if(n_poly>N_POLY_MAX)
return 0;
@ -63,9 +69,17 @@ int push_vert(float x, float y) {
n_poly++;
return 1;
}
/****************************************************
* 'Clear' pairs of coordinates
***************************************************/
void clear_verts() {
n_poly=0;
}
/****************************************************
* Check a pair of coordinates against two lists
* of vertices
* - 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;
@ -76,9 +90,15 @@ int pnpoly(int nvert, float *vertx, float *verty, float testx, float testy)
}
return c;
}
/****************************************************
* Test a coordinate against all vertices
***************************************************/
int check_bounds(float x, float y) {
return pnpoly(n_poly, polyx, polyy, x, y);
}
/****************************************************
* nanopb callback
***************************************************/
bool Fenceless_Coordinates_callback(pb_istream_t *stream, const pb_field_iter_t *field, void **arg) {
Serial.println("Called");
while(stream->bytes_left) {
@ -90,6 +110,12 @@ bool Fenceless_Coordinates_callback(pb_istream_t *stream, const pb_field_iter_t
return true;
}
}
/****************************************************
* Load coordinates from protobuff stream
* - currently a maximum of 10 coordinates
* - loading arrays in nanopb does not appear
* to work.
***************************************************/
void import_protobuf(uint8_t *protobuffer, uint32_t size) {
Fenceless_Coordinates m;
pb_istream_t stream = pb_istream_from_buffer(protobuffer, size);
@ -119,6 +145,9 @@ void import_protobuf(uint8_t *protobuffer, uint32_t size) {
push_vert(m.coord0.x, m.coord0.y);
}
}
/****************************************************
* nanopb callback
***************************************************/
bool Fenceless_Coordinates_encode(pb_ostream_t *stream, const pb_field_iter_t *field, void * const * arg) {
Serial.println("Encode called");
return false;
@ -128,6 +157,9 @@ bool Fenceless_Coordinates_encode(pb_ostream_t *stream, const pb_field_iter_t *f
}
return pb_encode(stream, Fenceless_Coordinate_fields, field);
}
/****************************************************
* live test of protobuf
***************************************************/
void test() {
Serial.println("Testing protobuf");
uint8_t buffer[100] = {0};
@ -139,21 +171,27 @@ void test() {
}
import_protobuf(buffer, sizeof(buffer));
}
int recieved = 0;
void on_recieve(int n) {
recieved = 1;
}
/****************************************************
* Initialize values
***************************************************/
void setup()
{
// give GPS time to start up
delay(1000);
// start uart
/****************************************************
* Configure USART
* - onboard serial to usb
* - software serial connected to GPS module
***************************************************/
Serial.begin(9600);
// start software uart for GPS
ss.begin(4800);
while (! Serial);
delay(1000);
// Initialize pin LED_BUILTIN as an output
/****************************************************
* Configure USART
* - onboard serial to usb
* - software serial connected to GPS module
***************************************************/
pinMode(LED_BUILTIN, OUTPUT);
// Initialize GPS - GPS does not work indoors - This will block until GPS available
@ -169,11 +207,15 @@ void setup()
// }
// }
// Initialize LoRa
/****************************************************
* Configure LoRa
* - set to multi-channel
* - set datarate
* - start communication
* - set transmission power
***************************************************/
Serial.print("Starting LoRa...");
// define multi-channel sending
lora.setChannel(MULTI);
// set datarate
lora.setDatarate(SF12BW125); // SF7BW125
if(!lora.begin())
{
@ -181,15 +223,12 @@ void setup()
Serial.println("Check your radio");
while(true);
}
// Optional set transmit power. If not set default is +17 dBm.
// Valid options are: -80, 1 to 17, 20 (dBm).
// For safe operation in 20dBm: your antenna must be 3:1 VWSR or better
// and respect the 1% duty cycle.
lora.setPower(15); // 1
// start 1 second timer
/****************************************************
* Configure Timer Interrupt
* - set for one second intervals
***************************************************/
TCCR1A = 0;
TCCR1B = 0;
@ -200,7 +239,15 @@ void setup()
Serial.println("OK");
}
// TIMER1_OVF_vect is called once per second
/****************************************************
* Timer interrupt service routine
* - this logic could be moved to loop()
* and be controlled by a state variable
* - generates a protobuf stream with current
* GPS coordinate values
* - sends buffer over LoRaWAN on a given
* send interval
***************************************************/
int sendCounter = 0;
ISR(TIMER1_OVF_vect) {
digitalWrite(LED_BUILTIN, sendCounter%2);
@ -240,6 +287,11 @@ ISR(TIMER1_OVF_vect) {
}
sendCounter--;
}
/****************************************************
* Main loop
* - feeds data to GPS module as it is made
* available
***************************************************/
void loop()
{
// For later when recieving from gateway is implemented