Main Site Documentation

WiFi and the weather


#1

Testing WiFi using api.openweathermap.org

Works a treat ::slight_smile:

using System;
using System.Collections;
using System.Threading;
using IotLabs.Hardware.Bluegiga;
using IotLabs.Net;
using IoT_Base;
using Microsoft.SPOT;
using STM32;

namespace IoT_Base_Test
{
    public class Program
    {
        private static SSD1306 _display;
        private static SerialWifi _wifi;
        private static int _count;
        private static readonly ArrayList CityList = new ArrayList();
        
        public static void Main()
        {
            _display = new SSD1306(0x3C, 400, Pin.PB1);
            _display.Initialize();
            DisplayData("Weather.Net", 3);
            Thread.Sleep(3000);

            CityList.Add(new WeatherData { City = "Auckland", Country = "NZ" });
            CityList.Add(new WeatherData { City = "Wellington", Country = "NZ" });
            CityList.Add(new WeatherData { City = "London", Country = "UK" });
            CityList.Add(new WeatherData { City = "Paris", Country = "FR" });
            CityList.Add(new WeatherData { City = "Berlin", Country = "DE" });
            CityList.Add(new WeatherData { City = "New York", Country = "US" });
            CityList.Add(new WeatherData { City = "Calgary", Country = "CA" });
            CityList.Add(new WeatherData { City = "Tokyo", Country = "JP" });
            CityList.Add(new WeatherData { City = "Timbuktu", Country = "ML" });

            DisplayData("Power on WiFi", 3,true);
            Hardware.WiFi.EnableWiFi();
            _wifi = new SerialWifi("COM2", Hardware.WiFi.WifiResetPin);
            _wifi.Connected += new EventHandler(OnConnected);
            _wifi.CommandFailed += new WifiBase.CommandFailedDelegate(OnCommandFailed);
            DisplayData("Connecting...", 3, true);
            _wifi.Connect("xxxxxx", "xxxxxx");
            Thread.Sleep(Timeout.Infinite);
        }
        static void OnConnected(object sender, EventArgs e)
        {
            DisplayData("Connected...", 3, true);
            GetWeatherForCity((WeatherData)CityList[0]);
        }
      
        static void GetWeatherForCity(WeatherData data)
        {
            var httpClient = new HttpClient(_wifi, "api.openweathermap.org");
            httpClient.HttpResponseReady += OnHttpResponseReady;
            httpClient.Get("/data/2.5/weather?q=" + data.City + "," + data.Country + "&units=metric&APPID=c47c7f28f4d8004b3f2fe258f269fd11");
        }

        static void OnHttpResponseReady(object sender, HttpResponseReadyEventArgs e)
        {
            if (e.Response.ResponseCode == 200 || e.Response.ResponseCode == 204)
            {
                try
                {
                    string data = e.Response.ResponseBody;
                    int start = data.IndexOf("{\"temp") + 1;
                    int end = data.IndexOf("}", start);
                    string temp = data.Substring(start, end - start);
                    string[] vals = temp.Split(',');
                    string[] tempData = vals[0].Split(':');
                    WeatherData cityData = (WeatherData) CityList[_count];
                    DisplayData(cityData.City + " " + cityData.Country,2,true,false);
                    DisplayData("Temp: " + tempData[1] + " deg C", 4);
                    _count++;
                    if (_count > CityList.Count - 1) _count = 0;
                    Thread.Sleep(2000);
                }
                catch (Exception)
                {
                    _count = 0;
                }
                GetWeatherForCity((WeatherData)CityList[_count]);
            }
            else
            {
                Debug.Print("HTTP Request failed (" + e.Response.ResponseCode + ")");
            }
        }

        static void OnCommandFailed(object sender, CommandFailedEventArgs e)
        {
            Debug.Print("ERROR = " + e.ErrorDescription);
        }

        static void DisplayData(string data, int line, bool clearScreen = false, bool refresh = true)
        {
            if(clearScreen)_display.ClearScreen();
            _display.DrawString(SSD1306.Align.Center, line,data);
            if(refresh) _display.Refresh();
        }
    }
    public class WeatherData
    {
        public string City;
        public string Country;
    }
}

#2

Your are an amazing worker Justin. I don’t know where you get the time. I have so many project ideas but so little time. I wish I knew your secret. :slight_smile:


#3

What no music with the vid?


#4

@ Dave McLaughlin - the life of a bachelor…once i am reunited with the family the play projects will drop exponentially ::slight_smile:

@ Duke Nukem was a rush job…was going to add DD Smash but ran out of time…