ESP8266 / ESP8266NodeMCUInterface

ESP8266 driver using the NodeMCU interface

Dependencies:   BufferedSerial

Dependents:   esp8266_nodeMCU1 esp8266_2_thingspeak1 Solarator_0-0-2 IoTBurglar_and_Fire_AlarmSystem ... more

Fork of ESP8266Interface by ESP8266

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)

Socket/TCPSocketServer.cpp@3:9aa05e19c62e, 2012-12-20 (annotated)

Committer:
samux
Date:
Thu Dec 20 10:37:52 2012 +0000
Revision:
3:9aa05e19c62e
Parent:
1:fb4494783863
Child:
4:0bcec6272784
add reboot method - reboot module for accept (tcp server)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 1:fb4494783863 1 /* Copyright (C) 2012 mbed.org, MIT License
samux 1:fb4494783863 2 *
samux 1:fb4494783863 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 1:fb4494783863 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
samux 1:fb4494783863 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
samux 1:fb4494783863 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
samux 1:fb4494783863 7 * furnished to do so, subject to the following conditions:
samux 1:fb4494783863 8 *
samux 1:fb4494783863 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 1:fb4494783863 10 * substantial portions of the Software.
samux 1:fb4494783863 11 *
samux 1:fb4494783863 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 1:fb4494783863 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 1:fb4494783863 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 1:fb4494783863 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 1:fb4494783863 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 1:fb4494783863 17 */
samux 1:fb4494783863 18
samux 1:fb4494783863 19 #include "TCPSocketServer.h"
samux 1:fb4494783863 20 #include <string>
samux 1:fb4494783863 21
samux 1:fb4494783863 22 TCPSocketServer::TCPSocketServer() {}
samux 1:fb4494783863 23
samux 1:fb4494783863 24 // Server initialization
samux 1:fb4494783863 25 int TCPSocketServer::bind(int port) {
samux 1:fb4494783863 26 char cmd[20];
samux 1:fb4494783863 27
samux 1:fb4494783863 28 // set TCP protocol
samux 1:fb4494783863 29 wifi->setProtocol(TCP);
samux 1:fb4494783863 30
samux 1:fb4494783863 31 // set local port
samux 1:fb4494783863 32 sprintf(cmd, "set i l %d\r", port);
samux 1:fb4494783863 33 if (!wifi->sendCommand(cmd, "AOK"))
samux 1:fb4494783863 34 return -1;
samux 3:9aa05e19c62e 35
samux 3:9aa05e19c62e 36 // save
samux 3:9aa05e19c62e 37 if (!wifi->sendCommand("save\r", "Stor"))
samux 3:9aa05e19c62e 38 return -1;
samux 3:9aa05e19c62e 39
samux 3:9aa05e19c62e 40 // reboot
samux 3:9aa05e19c62e 41 wifi->reboot();
samux 3:9aa05e19c62e 42
samux 3:9aa05e19c62e 43 // connect the network
samux 3:9aa05e19c62e 44 if (!wifi->sendCommand("join\r", "Associated", NULL, 5000))
samux 3:9aa05e19c62e 45 return -1;
samux 1:fb4494783863 46
samux 3:9aa05e19c62e 47 // exit
samux 1:fb4494783863 48 wifi->exit();
samux 3:9aa05e19c62e 49
samux 3:9aa05e19c62e 50 wait(0.2);
samux 3:9aa05e19c62e 51 wifi->flush();
samux 1:fb4494783863 52 return 0;
samux 1:fb4494783863 53 }
samux 1:fb4494783863 54
samux 1:fb4494783863 55 int TCPSocketServer::listen(int backlog) {
samux 1:fb4494783863 56 if (backlog != 1)
samux 1:fb4494783863 57 return -1;
samux 1:fb4494783863 58 return 0;
samux 1:fb4494783863 59 }
samux 1:fb4494783863 60
samux 1:fb4494783863 61
samux 1:fb4494783863 62 int TCPSocketServer::accept(TCPSocketConnection& connection) {
samux 1:fb4494783863 63 int nb_available = 0, pos = 0;
samux 1:fb4494783863 64 char c;
samux 1:fb4494783863 65 string str;
samux 1:fb4494783863 66 bool o_find = false;
samux 1:fb4494783863 67 while (1) {
samux 1:fb4494783863 68 while(!wifi->readable());
samux 1:fb4494783863 69 nb_available = wifi->readable();
samux 1:fb4494783863 70 for (int i = 0; i < nb_available; i++) {
samux 1:fb4494783863 71 c = wifi->getc();
samux 1:fb4494783863 72 if (c == '*') {
samux 1:fb4494783863 73 o_find = true;
samux 1:fb4494783863 74 }
samux 1:fb4494783863 75 if (o_find && c != '\r' && c != '\n') {
samux 1:fb4494783863 76 str += c;
samux 1:fb4494783863 77 pos = str.find("*OPEN*");
samux 1:fb4494783863 78 if (pos != string::npos) {
samux 1:fb4494783863 79 wifi->flush();
samux 1:fb4494783863 80 return 0;
samux 1:fb4494783863 81 }
samux 1:fb4494783863 82 }
samux 1:fb4494783863 83 }
samux 1:fb4494783863 84 }
samux 1:fb4494783863 85 }