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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,4 @@ | ||
| /* | ||
| * Implementation is in WiFiStream.h to avoid linker issues. Legacy WiFi and modern WiFi101 both define WiFiClass which | ||
| * will cause linker errors whenever Firmata.h is included. | ||
| */ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,263 @@ | ||
| /* | ||
| WiFiStream.h | ||
| An Arduino Stream that wraps an instance of a WiFi server. For use | ||
| with legacy Arduino WiFi shield and other boards and sheilds that | ||
| are compatible with the Arduino WiFi library. | ||
| Copyright (C) 2015-2016 Jesse Frush. All rights reserved. | ||
| This library is free software; you can redistribute it and/or | ||
| modify it under the terms of the GNU Lesser General Public | ||
| License as published by the Free Software Foundation; either | ||
| version 2.1 of the License, or (at your option) any later version. | ||
| See file LICENSE.txt for further informations on licensing terms. | ||
| */ | ||
|
|
||
| #ifndef ESPWIFI_STREAM_H | ||
| #define ESPWIFI_STREAM_H | ||
|
|
||
| #include <inttypes.h> | ||
| #include <Stream.h> | ||
| #include <ESP8266WiFi.h> | ||
|
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| class WiFiStream : public Stream | ||
| { | ||
| private: | ||
| WiFiServer _server = WiFiServer(23); | ||
| WiFiClient _client; | ||
|
|
||
| //configuration members | ||
| IPAddress _local_ip; | ||
| uint16_t _port = 0; | ||
| uint8_t _key_idx = 0; //WEP | ||
| const char *_key = nullptr; //WEP | ||
| const char *_passphrase = nullptr; //WPA | ||
| char *_ssid = nullptr; | ||
|
|
||
| inline int connect_client() | ||
| { | ||
| if( !( _client && _client.connected() ) ) | ||
| { | ||
| WiFiClient newClient = _server.available(); | ||
| if( !newClient ) | ||
| { | ||
| return 0; | ||
| } | ||
|
|
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| _client = newClient; | ||
| } | ||
| return 1; | ||
| } | ||
|
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| inline bool is_ready() | ||
| { | ||
| uint8_t status = WiFi.status(); | ||
| return !( status == WL_NO_SHIELD || status == WL_CONNECTED ); | ||
| } | ||
|
|
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| public: | ||
| WiFiStream() {}; | ||
|
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| // allows another way to configure a static IP before begin is called | ||
| inline void config(IPAddress local_ip) | ||
| { | ||
| // _local_ip = local_ip; | ||
| // WiFi.config( local_ip ); | ||
| } | ||
|
|
||
| // get DCHP IP | ||
| inline IPAddress localIP() | ||
| { | ||
| return WiFi.localIP(); | ||
| } | ||
|
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| inline bool maintain() | ||
| { | ||
| if( connect_client() ) return true; | ||
|
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| stop(); | ||
| int result = 0; | ||
| if( WiFi.status() != WL_CONNECTED ) | ||
| { | ||
| // if( _local_ip ) | ||
| // { | ||
| // WiFi.config( _local_ip ); | ||
| // } | ||
|
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| if( _passphrase ) | ||
| { | ||
| result = WiFi.begin( _ssid, _passphrase); | ||
| } | ||
| // else if( _key_idx && _key ) | ||
| // { | ||
| // result = WiFi.begin( _ssid, _key_idx, _key ); | ||
| // } | ||
| // else | ||
| // { | ||
| // result = WiFi.begin( _ssid ); | ||
| // } | ||
| } | ||
| if( result == 0 ) return false; | ||
|
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| _server = WiFiServer( _port ); | ||
| _server.begin(); | ||
| return result; | ||
| } | ||
|
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| /****************************************************************************** | ||
| * Connection functions with DHCP | ||
| ******************************************************************************/ | ||
|
|
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| //OPEN networks | ||
| inline int begin(char *ssid, uint16_t port) | ||
| { | ||
| // if( !is_ready() ) return 0; | ||
|
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| // _ssid = ssid; | ||
| // _port = port; | ||
| // int result = WiFi.begin( ssid ); | ||
| // if( result == 0 ) return 0; | ||
|
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| // _server = WiFiServer( port ); | ||
| // _server.begin(); | ||
| // return result; | ||
| return 0; | ||
| } | ||
|
|
||
| //WEP-encrypted networks | ||
| inline int begin(char *ssid, uint8_t key_idx, const char *key, uint16_t port) | ||
| { | ||
| // if( !is_ready() ) return 0; | ||
|
|
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| // _ssid = ssid; | ||
| // _port = port; | ||
| // _key_idx = key_idx; | ||
| // _key = key; | ||
|
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| // int result = WiFi.begin( ssid, key_idx, key ); | ||
| // if( result == 0 ) return 0; | ||
|
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| // _server = WiFiServer( port ); | ||
| // _server.begin(); | ||
| // return result; | ||
| return 0; | ||
| } | ||
|
|
||
| //WPA-encrypted networks | ||
| inline int begin(char *ssid, const char *passphrase, uint16_t port) | ||
| { | ||
| if( !is_ready() ) return 0; | ||
|
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| _ssid = ssid; | ||
| _port = port; | ||
| _passphrase = passphrase; | ||
|
|
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| int result = WiFi.begin( ssid, passphrase); | ||
| if( result == 0 ) return 0; | ||
|
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| _server = WiFiServer( port ); | ||
| _server.begin(); | ||
| return result; | ||
| } | ||
|
|
||
| /****************************************************************************** | ||
| * Connection functions without DHCP | ||
| ******************************************************************************/ | ||
|
|
||
| //OPEN networks with static IP | ||
| inline int begin(char *ssid, IPAddress local_ip, uint16_t port) | ||
| { | ||
| // if( !is_ready() ) return 0; | ||
|
|
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| // _ssid = ssid; | ||
| // _port = port; | ||
| // _local_ip = local_ip; | ||
|
|
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| // WiFi.config( local_ip ); | ||
| // int result = WiFi.begin( ssid ); | ||
| // if( result == 0 ) return 0; | ||
|
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| // _server = WiFiServer( port ); | ||
| // _server.begin(); | ||
| // return result; | ||
| return 0; | ||
| } | ||
|
|
||
| //WEP-encrypted networks with static IP | ||
| inline int begin(char *ssid, IPAddress local_ip, uint8_t key_idx, const char *key, uint16_t port) | ||
| { | ||
| // if( !is_ready() ) return 0; | ||
|
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| // _ssid = ssid; | ||
| // _port = port; | ||
| // _local_ip = local_ip; | ||
| // _key_idx = key_idx; | ||
| // _key = key; | ||
|
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| // WiFi.config( local_ip ); | ||
| // int result = WiFi.begin( ssid, key_idx, key ); | ||
| // if( result == 0 ) return 0; | ||
|
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| // _server = WiFiServer( port ); | ||
| // _server.begin(); | ||
| // return result; | ||
| return 0; | ||
| } | ||
|
|
||
| //WPA-encrypted networks with static IP | ||
| inline int begin(char *ssid, IPAddress local_ip, const char *passphrase, uint16_t port) | ||
| { | ||
| // if( !is_ready() ) return 0; | ||
|
|
||
| // _ssid = ssid; | ||
| // _port = port; | ||
| // _local_ip = local_ip; | ||
| // _passphrase = passphrase; | ||
|
|
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| // WiFi.config( local_ip ); | ||
| // int result = WiFi.begin( ssid, passphrase); | ||
| // if( result == 0 ) return 0; | ||
|
|
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| // _server = WiFiServer( port ); | ||
| // _server.begin(); | ||
| // return result; | ||
| return 0; | ||
| } | ||
|
|
||
| /****************************************************************************** | ||
| * Stream implementations | ||
| ******************************************************************************/ | ||
|
|
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| inline int available() | ||
| { | ||
| return connect_client() ? _client.available() : 0; | ||
| } | ||
|
|
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| inline void flush() | ||
| { | ||
| if( _client ) _client.flush(); | ||
| } | ||
|
|
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| inline int peek() | ||
| { | ||
| return connect_client() ? _client.peek(): 0; | ||
| } | ||
|
|
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| inline int read() | ||
| { | ||
| return connect_client() ? _client.read() : -1; | ||
| } | ||
|
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| inline void stop() | ||
| { | ||
| _client.stop(); | ||
| } | ||
|
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| inline size_t write(uint8_t byte) | ||
| { | ||
| if( connect_client() ) _client.write( byte ); | ||
| } | ||
| }; | ||
|
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| #endif //ESPWIFI_STREAM_H |