Working GPS implementation

prototype/esp32/esp32.ino

@@ -1,58 +1,49 @@
-#include <Arduino.h>
-#include <types.h>
-#include <TinyGPS++.h> // the TinyGPS++ librarie
-//#include <HardwareSerial.h> // to convert serial from the GPS into something TinyGPS can understand
-#include <WiFi.h> // from the ESP32 plugin
-#include <AsyncTCP.h> // for basic TCP t/rx
-#include <ESPAsyncWebServer.h> // for web server impl.
-//#include <SoftwareSerial.h> // to send data back over USB
+#include "TinyGPS++.h";
 
-#define GPS_TX_PIN 1
-#define GPS_RX_PIN 3
+#define GPS_RX_PIN 16
+#define GPS_TX_PIN 17
 
-const char* SSID = "Bytetools Technologies Inc.";
-const char* PASS = "Fuck commies #69420!";
-
-AsyncWebServer server(80);
 TinyGPSPlus gps;
-//HardwareSerial SerialGPS(1);
 
-// Load variables into globals
+/* LAT = latitude
+LON = longitude
+ALT = altitude
+Note: all 32-bit flaoting point decimal operations ARE atomic for the ESP32.
+This means that sharing data across threads and cores IS SAFE!
+So launching the web server on a separate thread will ot cause a data race */ 
+float LAT, LON, ALT;
+
 void setup() {
-  Serial.begin(9600);
-  //SerialGPS.begin(9600, SERIAL_8N1, GPS_RX_PIN, GPS_TX_PIN);
-  WiFi.begin(SSID, PASS);
-  Serial.print("Connecting to wifi");
-  Serial.print(".");
-  while (WiFi.status() != WL_CONNECTED) {
-    delay(1000);
-    Serial.print(".");
-  }
-  Serial.println(WiFi.localIP());
-  server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
-    request->send(200, "text/plain", "HELO");
-  });
-  server.begin();
+  /*
+  Serial speed of USB.
+  NOTE:  this model of ESP has a native baud rate of 115200, meaning that boot message will display properly along with all other serial output
+  */
+  Serial.begin(115200); 
+  // Serial speed of GPS module
+  Serial2.begin(9600, SERIAL_8N1, GPS_RX_PIN, GPS_TX_PIN);
+  Serial.println("Setup complete!");
 }
 
-// loop forever
 void loop() {
-  /*
-  //while (SerialGPS.available() > 0) {
-    //gps.encode(SerialGPS.read());
+  // if there is anything to read from serial port 2
+  while (Serial2.available()) {
+    // read one character into the char "in"
+    char in = Serial2.read();
+    //Serial.print(in);
+    // send to GPS encoder to create new data
+    gps.encode(in);
+    // if a new location is given
     if (gps.location.isUpdated()) {
-      Serial.println("HELLO");
+      // set all location attributes we desire
+      LAT = gps.location.lat();
+      LON = gps.location.lng();
+      ALT = gps.altitude.meters();
       Serial.print("LAT=");
-      Serial.println(gps.location.lat());
-      Serial.print("LON=");
-      Serial.println(gps.location.lng());
-      Serial.print("ALT=");
-      Serial.println(gps.altitude.meters());
-    } else {
-      Serial.println("INVALID LOCATION");
-    }
-  //}
-  */
-  //Serial.println("Nothing in buffer.");
-  //delay(1000);
-}
+      Serial.print(LAT, 6);
+      Serial.print(" LON=");
+      Serial.print(LON, 6);
+      Serial.print(" ALT=");
+      Serial.println(ALT, 6);
+    } // close if
+  } // close while
+} // close loop