ESP8266 driver using the NodeMCU interface
Dependencies: BufferedSerial
Dependents: esp8266_nodeMCU1 esp8266_2_thingspeak1 Solarator_0-0-2 IoTBurglar_and_Fire_AlarmSystem ... more
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This is an alternative implementation of the ESP8266 driver that uses the NodeMCU firmware. The NodeMCU firmware provides a slightly larger feature set than the default firmware through a Lua interpreter.
Note
This library is currently in Alpha. It is not feature complete and has some bugs, proceed with caution. Fixes and patches are welcome!
Interface changes
- SSID and passphrase moved out of ESP8266Interface constructor and to ESP8266Interface::connect
- ESP8266Interface constructor provides optional timeout parameter to specify how long to wait for network operations
Note
NodeMCU defaults to a baud rate of 9600 instead of 115200 used by the default firmware.
Firmware
To install the NodeMCU firmware, follow the instructions on the Firmware Update wiki page using the nodemcu_integer_0.9.6-dev_20150406.bin binary at address 0x00000 instead of boot_v1.1.bin and user1.bin.
Since the NodeMCU firmware defaults to a baud rate of 9600, the Serial Passthrough program can be used to get direct access to the Lua interpreter running on the ESP8266.
Status
Working features:
- TCP Client
- UDP Client Transmit (Currently only UDP Server can recieve messages)
- Single Connection at a time
- Station Mode (Connects to AP)
- DNS Lookups
To be implemented:
- TCP Server
- UDP Server
- UDP Client recieve
- Multiple Connections tracked through Lua variables
- AP Mode (Act as access point)
- IPV6 support (Existing issue with NodeMCU)
ESP8266Interface.h
- Committer:
- michaeljkoster
- Date:
- 2014-11-30
- Revision:
- 13:41098c907200
- Parent:
- WiflyInterface.h@ 6:5176e0864078
- Child:
- 14:4d1128f72e00
File content as of revision 13:41098c907200:
/* ESP8266Interface.h */ /* Copyright (C) 2012 mbed.org, MIT License * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software * and associated documentation files (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, publish, distribute, * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies or * substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #ifndef ESP8266INTERFACE_H_ #define ESP8266INTERFACE_H_ #include "ESP8266.h" /** * Interface using ESP8266 to connect to an IP-based network */ class ESP8266Interface: public ESP8266 { public: /** * Constructor * * \param tx mbed pin to use for tx line of Serial interface * \param rx mbed pin to use for rx line of Serial interface * \param reset reset pin of the wifi module () * \param ssid ssid of the network * \param phrase WEP or WPA key */ ESP8266Interface(PinName tx, PinName rx, PinName reset, const char * ssid, const char * phrase ); /** Initialize the interface with DHCP. * Initialize the interface and configure it to use DHCP (no connection at this point). * \return 0 on success, a negative number on failure */ int init(); //With DHCP /** Connect * Bring the interface up, start DHCP if needed. * \return 0 on success, a negative number on failure */ int connect(); /** Disconnect * Bring the interface down * \return 0 on success, a negative number on failure */ int disconnect(); /** Get IP address * * \return ip address */ char* getIPAddress(); private: char ip_string[20]; bool ip_set; }; #include "UDPSocket.h" #endif /* ESP8266INTERFACE_H_ */