Update 'Seeed Wio Terminal/projects/m5-gps.ino'

Seeed Wio Terminal/projects/m5-gps.ino

@@ -1,6 +1,12 @@
+#include <ArduinoJson.h>
+
 #include <TinyGPS++.h>
 #include <wiring_private.h>
 #include "TFT_eSPI.h"
+#include <Arduino.h>
+#include <rpcWiFi.h>
+#include <HTTPClient.h>
+
 
 TFT_eSPI tft;
 
@@ -13,6 +19,14 @@ TinyGPSPlus gps;
 // Left side Grove connector shares pins with I2C1 of 40 pin connector.
 static Uart Serial3(&sercom3, PIN_WIRE_SCL, PIN_WIRE_SDA, SERCOM_RX_PAD_1, UART_TX_PAD_0);
 
+String last_date = "";
+String last_time = "";
+String last_lat = "";
+String last_lon = "";
+
+char* ssid = "SSID";
+char* pw = "PASSWORD";
+
 void setup()
 {
   Serial.begin(115200);
@@ -25,77 +39,104 @@ void setup()
   Serial3.begin(GPSBaud);
   pinPeripheral(PIN_WIRE_SCL, PIO_SERCOM_ALT);
   pinPeripheral(PIN_WIRE_SCL, PIO_SERCOM_ALT);
+
+  WiFi.begin(ssid, pw);
 }
  
 void loop()
 {
-  // This sketch displays information every time a new sentence is correctly encoded.
   while (Serial3.available() > 0)
-    if (gps.encode(Serial3.read()))
-      displayInfo();
-      delay(3000);
- 
-  if (millis() > 5000 && gps.charsProcessed() < 10)
   {
-    Serial.println(F("No GPS detected: check wiring."));
-    tft.drawString("No GPS detected: check wiring.", 10, 10);
-    while(true);
+    if (gps.encode(Serial3.read()))
+    {
+      displayInfo();
+    }
   }
+
+  delay(1000);
 }
 
 void displayInfo()
 {
-  Serial.print(F("Location: ")); 
-  if (gps.location.isValid())
-  {
-    Serial.print(gps.location.lat(), 6);
-    Serial.print(F(","));
-    Serial.print(gps.location.lng(), 6);
-
-    String text = String(gps.location.lat(), 6) + ", " + String(gps.location.lng(), 6);
-    tft.fillRect(10, 30, 190, 30, TFT_BLACK);
-    tft.drawString(text, 10, 30);
-  }
-  else
-  {
-    Serial.print(F("INVALID"));
-  }
-
-  Serial.print(F("  Date/Time: "));
   if (gps.date.isValid())
   {
-    Serial.print(gps.date.month());
-    Serial.print(F("/"));
-    Serial.print(gps.date.day());
-    Serial.print(F("/"));
-    Serial.print(gps.date.year());
-  }
-  else
-  {
-    Serial.print(F("INVALID"));
+    String text = String(gps.date.day()) + "/" + String(gps.date.month()) + "/" + String(gps.date.year());
+    if(text != last_date)
+    {
+      tft.fillRect(10, 210, 80, 15, TFT_BLACK);
+      tft.drawString(text, 10, 210);
+      last_date = text;
+    }
   }
 
-  Serial.print(F(" "));
   if (gps.time.isValid())
   {
-    if (gps.time.hour() < 10) Serial.print(F("0"));
-    Serial.print(gps.time.hour());
-    Serial.print(F(":"));
-    if (gps.time.minute() < 10) Serial.print(F("0"));
-    Serial.print(gps.time.minute());
-    Serial.print(F(":"));
-    if (gps.time.second() < 10) Serial.print(F("0"));
-    Serial.print(gps.time.second());
-    Serial.print(F("."));
-    if (gps.time.centisecond() < 10) Serial.print(F("0"));
-    Serial.print(gps.time.centisecond());
+    String h = "";
+    String m = "";
+    if(gps.time.hour() < 10) h = "0";
+    h = h + String(gps.time.hour());
+    if(gps.time.minute() < 10) m = "0";
+    m = m + String(gps.time.minute());
+
+    String text = h + ":" + m;
+    if(text != last_time)
+    {
+      tft.fillRect(250, 210, 50, 15, TFT_BLACK);
+      tft.drawString(text, 250, 210);
+      last_time = text;
+    }
   }
-  else
+  
+  if (gps.location.isValid())
   {
-    Serial.print(F("INVALID"));
+    String lt = String(gps.location.lat(), 3);
+    String ln = String(gps.location.lng(), 3);
+    if(lt != last_lat || ln != last_lon)
+    {
+      String text = lt + ", " + ln;
+      tft.fillRect(10, 60, 190, 15, TFT_BLACK);
+      tft.drawString(text, 10, 60);
+
+      last_lat = lt;
+      last_lon = ln;
+
+      if((WiFi.status() == WL_CONNECTED))
+      {
+        String wifi_text = "Connected to WiFi: " + String(ssid);
+        tft.drawString(wifi_text, 10, 10);
+        api_lookup();
+      }
+    }
+  }
+}
+
+void api_lookup()
+{
+  HTTPClient http;
+  String api_key = "e86b43a62693d9c23eb781f3a06ff13c";
+  String url = "http://api.openweathermap.org/geo/1.0/reverse?lat=" + last_lat + "&lon=" + last_lon + "&limit=1&appid=" + api_key;
+  http.begin(url);
+  
+  int http_code = http.GET();
+  if(http_code > 0)
+  {
+    if(http_code == HTTP_CODE_OK)
+    {
+      String payload = http.getString();
+      payload.remove(0, 1);
+      payload.remove(payload.length(), 1);
+      Serial.println(payload);
+
+      JsonDocument doc;
+      deserializeJson(doc, payload);
+      String name = doc["name"];
+      String state = doc["state"];
+      String loc_text = name + ", " + state;
+      tft.drawString(loc_text, 10, 80);
+    }
   }
 
-  Serial.println();
+  http.end();
 }
 
 void SERCOM3_0_Handler()