Basic networking done, GET requests to shuttle server working

.gitignore

@@ -3,3 +3,4 @@
 .vscode/c_cpp_properties.json
 .vscode/launch.json
 .vscode/ipch
+secrets.hpp

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "C_Cpp.errorSquiggles": "disabled"
+}

platformio.ini

@@ -15,3 +15,4 @@ framework = arduino
 lib_deps = 
 	adafruit/Adafruit SSD1306@^2.5.9
 	miguelbalboa/MFRC522@^1.4.11
+	arduino-libraries/Arduino_JSON@^0.2.0

src/TeaNetworking.cpp

@@ -0,0 +1,43 @@
+#include "TeaNetworking.hpp"
+
+String TeaNetworking::httpsGETRequest(const char *serverName)
+{
+  WiFiClientSecure client;
+  String payload = "{}";
+  // wait for WiFi connection
+  if ((WiFi.status() == WL_CONNECTED))
+  {
+    client.setTrustAnchors(&cert);
+    HTTPClient https;
+    Serial.print("[HTTPS] begin...\n");
+    if (https.begin(client, serverName))
+    { // HTTPS
+      Serial.print("[HTTPS] GET...\n");
+      // start connection and send HTTP header
+      int httpCode = https.GET();
+      // httpCode will be negative on error
+      if (httpCode > 0)
+      {
+        // HTTP header has been send and Server response header has been handled
+        Serial.printf("[HTTPS] GET... code: %d\n", httpCode);
+        // file found at server
+        if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY)
+        {
+          payload = https.getString();
+          Serial.println(payload);
+        }
+      }
+      else
+      {
+        Serial.printf("[HTTPS] GET... failed, error: %s\n", https.errorToString(httpCode).c_str());
+      }
+      https.end();
+    }
+    else
+    {
+      Serial.printf("[HTTPS] Unable to connect\n");
+    }
+  }
+  JSONVar jsonData = JSON.parse(data);
+  return jsonData;
+}

src/TeaNetworking.hpp

@@ -0,0 +1,15 @@
+#pragma once
+#include <ESP8266WiFi.h>
+#include <WiFiClientSecure.h>
+#include <ESP8266HTTPClient.h>
+#include <Arduino_JSON.h>
+#include "rootCertificate.hpp"
+
+class TeaNetworking
+{
+public:
+    String httpsGETRequest(const char *serverName);
+private:
+    // Create a list of certificates with the server certificate
+    X509List cert(IRG_Root_X1);
+};

src/main.cpp

@@ -1,4 +1,5 @@
 #include "main.hpp"
+#include "secrets.hpp"
 
 #define WIRE Wire
 
@@ -9,7 +10,6 @@
 
 // RFID
 #define RST_PIN 2                 // D4
-uint8_t scanDelay = 5;            // 5 second delay between reads
 #define SS_PIN 15                 // D8
 MFRC522 mfrc522(SS_PIN, RST_PIN); // create RFID instance
 MFRC522::MIFARE_Key key;
@@ -21,19 +21,53 @@ TeaTimer teaTimer(&contServo);
 SmartDial smartDial(POTENTIOMETER_PIN);
 SmartDisplay smartDisplay(&display);
 
+// networking
+const char *shuttleServer = "https://ias-tea-axum.shuttleapp.rs/alltea";
+
 enum State
 {
   WAIT_FOR_RFID_SCAN,
   DISPLAY_SCANNED_TEA_CONFIG,
   ADD_NEW_TEA_CONFIG,
   STEEPING_IN_PROGRESS,
+  NETWORKING_DEBUG,
 };
-State state = State::DISPLAY_SCANNED_TEA_CONFIG;
+State state = State::NETWORKING_DEBUG;
 
 void setup()
 {
   Serial.begin(9600);
 
+  // networking init-----------------------
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(ssid, password);
+  Serial.println("Connecting");
+  while (WiFi.status() != WL_CONNECTED)
+  {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.println("");
+  Serial.print("Connected to WiFi network with IP Address: ");
+  Serial.println(WiFi.localIP());
+
+  // Set time via NTP, as required for x.509 validation
+  configTime(3 * 3600, 0, "pool.ntp.org", "time.nist.gov");
+  Serial.print("Waiting for NTP time sync: ");
+  time_t now = time(nullptr);
+  while (now < 8 * 3600 * 2)
+  {
+    delay(500);
+    Serial.print(".");
+    now = time(nullptr);
+  }
+  Serial.println("");
+  struct tm timeinfo;
+  gmtime_r(&now, &timeinfo);
+  Serial.print("Current time: ");
+  Serial.print(asctime(&timeinfo));
+  //---------------------------------------
+
   Serial.println("Initializing SPI...");
   SPI.begin();
 
@@ -65,6 +99,14 @@ void loop()
 
   switch (state)
   {
+  case NETWORKING_DEBUG:
+  {
+    JSONVar myObject = httpsGETRequest(serverName);
+    Serial.println(myObject);
+    delay(2000);
+    state = DISPLAY_SCANNED_TEA_CONFIG;
+    break;
+  }
   case WAIT_FOR_RFID_SCAN:
   {
     smartDisplay.printWaitForRFIDScreen();

src/main.hpp

@@ -1,4 +1,5 @@
 #include <Arduino.h>
+#include <Arduino_JSON.h>
 #include <SPI.h>
 #include <Wire.h>
 #include <Adafruit_GFX.h>

src/rootCertificate.hpp

@@ -0,0 +1,33 @@
+const char IRG_Root_X1[] PROGMEM = R"CERT(
+-----BEGIN CERTIFICATE-----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=
+-----END CERTIFICATE-----
+)CERT";