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| − | __TOC__
| + | #REDIRECT [[Mobile_Spacestate_Indicator]] |
| − | {{Project
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| − | |State=Completed
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| − | |Members=xopr
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| − | |Description=Creating a wireless SpaceState switch
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| − | }}
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| − | | |
| − | == synopsis ==
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| − | This sketch is a web client and will update the SpaceState
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| − | | |
| − | It reads the GPIO2 (pulled up) pin where the space state switch is connected to via ground.
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| − | GPIO0 is reserved for onewire devices.
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| − | | |
| − | == hardware ==
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| − | [[Image:SpaceState.png|thumb|right|350px|the new Raspberry PI replacement: fast boot times and no SD card corruption anymore]]
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| − | Thanks to the [[ESP8266]], the hardware is simple enough to put on a small prototyping board.
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| − | It has a 3v3 regulator and the 4k7 and 10k pull-ups for onewire and the spacestate switch respectively.
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| − | | |
| − | == code ==
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| − | <pre>
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| − | /*
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| − | 2015-07-05: Created by xopr
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| − |
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| − | Code based on http://iot-playground.com/2-uncategorised/41-esp8266-ds18b20-temperature-sensor-arduino-ide by Igor Jarc
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| − |
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| − | External libraries:
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| − | - https://github.com/milesburton/Arduino-Temperature-Control-Library
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| − |
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| − | This program is free software; you can redistribute it and/or
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| − | modify it under the terms of the GNU General Public License
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| − | version 2 as published by the Free Software Foundation.
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| − | */
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| − | | |
| − | #include <ESP8266WiFi.h>
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| − | #include <OneWire.h>
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| − | #include <DallasTemperature.h>
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| − | | |
| − | //AP definitions
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| − | #define AP_SSID "ACKspaceWifi"
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| − | #define AP_PASSWORD "nospacenet"
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| − | | |
| − | #define API_SERVER "ackspace.nl"
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| − | #define API_KEY "<YOUR_KEY>"
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| − | | |
| − | #define PIN_SWITCH 2 | |
| − | | |
| − | void updateSpaceState( bool _bState );
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| − | | |
| − | void setup()
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| − | {
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| − | Serial.begin(115200);
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| − | | |
| − | pinMode( PIN_SWITCH, INPUT_PULLUP );
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| − |
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| − | wifiConnect( );
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| − | | |
| − | }
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| − | | |
| − | | |
| − | bool bState = false;
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| − | unsigned long time = 0;
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| − | | |
| − | void loop()
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| − | {
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| − | if ( ( millis() - time > 19900 ) || bState != digitalRead( PIN_SWITCH ) )
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| − | {
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| − | delay( 100 );
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| − |
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| − | bState = digitalRead( PIN_SWITCH );
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| − | | |
| − | updateSpaceState( bState );
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| − | updateOldSpaceState( bState );
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| − | time = millis();
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| − | }
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| − | | |
| − | delay( 1 );
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| − | }
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| − | | |
| − | void updateSpaceState( bool _bState )
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| − | {
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| − | // Use WiFiClient class to create TCP connections
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| − | WiFiClient client;
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| − | if (!client.connect( API_SERVER, 80 ) )
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| − | {
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| − | Serial.println( "connection failed" );
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| − | return;
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| − | }
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| − | | |
| − | // We now create a URI for the request
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| − | String url = "/spaceAPI/?update&state=";
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| − | | |
| − | if ( _bState )
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| − | url += 0;
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| − | else
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| − | url += 1;
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| − | | |
| − | url += "&key=";
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| − | url += API_KEY;
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| − | | |
| − | Serial.print( "Requesting URL: " );
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| − | Serial.println( url );
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| − | | |
| − | // This will send the request to the server
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| − | client.print( String("GET " ) + url + " HTTP/1.1\r\n" +
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| − | "Host: " + API_SERVER + "\r\n" +
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| − | "Connection: close\r\n\r\n");
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| − | delay( 10 );
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| − | | |
| − | // Read all the lines of the reply from server and print them to Serial
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| − | while( client.available( ) )
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| − | {
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| − | String line = client.readStringUntil( '\r' );
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| − | Serial.print( line );
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| − | }
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| − | | |
| − | Serial.println( );
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| − | Serial.println( "closing connection" );
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| − | }
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| − | | |
| − | void updateOldSpaceState( bool _bState )
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| − | {
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| − | // Use WiFiClient class to create TCP connections
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| − | WiFiClient client;
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| − | if (!client.connect( API_SERVER, 80 ) )
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| − | {
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| − | Serial.println( "connection failed" );
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| − | return;
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| − | }
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| − | | |
| − | // We now create a URI for the request
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| − | String url = "/FORGOT_THE_URI";
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| − | | |
| − | if ( _bState )
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| − | url += "KEY_TO_SET_THE_SPACE_CLOSED";
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| − | else
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| − | url += "KEY_TO_SET_THE_SPACE_OPEN";
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| − | | |
| − | Serial.print( "Requesting URL: " );
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| − | Serial.println( url );
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| − | | |
| − | // This will send the request to the server
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| − | client.print( String("GET " ) + url + " HTTP/1.1\r\n" +
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| − | "Host: " + API_SERVER + "\r\n" +
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| − | "Connection: close\r\n\r\n");
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| − | delay( 10 );
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| − | | |
| − | // Read all the lines of the reply from server and print them to Serial
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| − | while( client.available( ) )
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| − | {
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| − | String line = client.readStringUntil( '\r' );
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| − | Serial.print( line );
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| − | }
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| − | | |
| − | Serial.println( );
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| − | Serial.println( "closing connection" );
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| − | }
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| − | | |
| − | void wifiConnect()
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| − | {
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| − | Serial.print( "Connecting to " );
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| − | Serial.print( AP_SSID );
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| − | WiFi.begin( AP_SSID, AP_PASSWORD );
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| − | while ( WiFi.status() != WL_CONNECTED )
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| − | {
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| − | delay( 1000 );
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| − | Serial.print( "." );
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| − | }
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| − |
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| − | Serial.println( "" );
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| − | Serial.println( "WiFi connected" );
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| − | | |
| − | // Print the IP address
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| − | Serial.println( WiFi.localIP( ) );
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| − | }
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| − | </pre>
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| − | | |
| − | == todo ==
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| − | * upload the php and database backend
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| − | * switch over to the new API
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| − | * remove the old SpaceAPI implementation
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| − | | |
| − | Note: this will be done in the new [[SpaceAPI]]
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