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)

Diff: Socket/TCPSocketServer.cpp

Revision:
13:41098c907200
Parent:
12:c5f0eac67a8a
Child:
14:4d1128f72e00
--- a/Socket/TCPSocketServer.cpp	Wed Oct 08 19:57:58 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,90 +0,0 @@
-/* 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.
- */
-
-#include "TCPSocketServer.h"
-#include <string>
-
-TCPSocketServer::TCPSocketServer() {}
-
-// Server initialization
-int TCPSocketServer::bind(int port) {
-    char cmd[20];
-    
-    // set TCP protocol
-    wifi->setProtocol(TCP);
-    
-    // set local port
-    sprintf(cmd, "set i l %d\r", port);
-    if (!wifi->sendCommand(cmd, "AOK"))
-        return -1;
-    
-    // save
-    if (!wifi->sendCommand("save\r", "Stor"))
-        return -1;
-    
-    // reboot
-    wifi->reboot();
-    
-    // connect the network
-    if (wifi->isDHCP()) {
-        if (!wifi->sendCommand("join\r", "DHCP=ON", NULL, 10000))
-            return -1;
-    } else {
-        if (!wifi->sendCommand("join\r", "Associated", NULL, 10000))
-            return -1;
-    }
-        
-    // exit
-    wifi->exit();
-    
-    wait(0.2);
-    wifi->flush();
-    return 0;
-}
-
-int TCPSocketServer::listen(int backlog) {
-    if (backlog != 1)
-        return -1;
-    return 0;
-}
-
-
-int TCPSocketServer::accept(TCPSocketConnection& connection) {
-    int nb_available = 0, pos = 0;
-    char c;
-    string str;
-    bool o_find = false;
-    while (1) {
-        while(!wifi->readable());
-        nb_available = wifi->readable();
-        for (int i = 0; i < nb_available; i++) {
-            c = wifi->getc();
-            if (c == '*') {
-                o_find = true;
-            }
-            if (o_find && c != '\r' && c != '\n') {
-                str += c;
-                pos = str.find("*OPEN*");
-                if (pos != string::npos) {
-                    wifi->flush();
-                    return 0;
-                }
-            }
-        }
-    }
-}
\ No newline at end of file