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
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/TCPSocketConnection.cpp
- Revision:
- 13:41098c907200
- Parent:
- 12:c5f0eac67a8a
- Child:
- 14:4d1128f72e00
--- a/Socket/TCPSocketConnection.cpp Wed Oct 08 19:57:58 2014 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,125 +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 "TCPSocketConnection.h"
-#include <algorithm>
-
-TCPSocketConnection::TCPSocketConnection() {}
-
-int TCPSocketConnection::connect(const char* host, const int port)
-{
- if (!wifi->connect(host, port))
- return -1;
- wifi->flush();
- return 0;
-}
-
-bool TCPSocketConnection::is_connected(void)
-{
- return wifi->is_connected();
-}
-
-int TCPSocketConnection::send(char* data, int length)
-{
- Timer tmr;
-
- if (!_blocking) {
- tmr.start();
- while (tmr.read_ms() < _timeout) {
- if (wifi->writeable())
- break;
- }
- if (tmr.read_ms() >= _timeout) {
- return -1;
- }
- }
- return wifi->send(data, length);
-}
-
-// -1 if unsuccessful, else number of bytes written
-int TCPSocketConnection::send_all(char* data, int length)
-{
- Timer tmr;
- int idx = 0;
- tmr.start();
-
- while ((tmr.read_ms() < _timeout) || _blocking) {
-
- idx += wifi->send(data, length);
-
- if (idx == length)
- return idx;
- }
- return (idx == 0) ? -1 : idx;
-}
-
-// -1 if unsuccessful, else number of bytes received
-int TCPSocketConnection::receive(char* data, int length)
-{
- Timer tmr;
- int time = -1;
-
-
- if (!_blocking) {
- tmr.start();
- while (time < _timeout + 20) {
- if (wifi->readable()) {
- break;
- }
- time = tmr.read_ms();
- }
- if (time >= _timeout + 20) {
- return -1;
- }
- }
-
-
- while(!wifi->readable());
- int nb_available = wifi->readable();
- for (int i = 0; i < min(nb_available, length); i++) {
- data[i] = wifi->getc();
- }
-
- return min(nb_available, length);
-}
-
-
-// -1 if unsuccessful, else number of bytes received
-int TCPSocketConnection::receive_all(char* data, int length)
-{
- Timer tmr;
- int idx = 0;
- int time = -1;
-
- tmr.start();
-
- while (time < _timeout || _blocking) {
-
- int nb_available = wifi->readable();
- for (int i = 0; i < min(nb_available, length); i++) {
- data[idx++] = wifi->getc();
- }
-
- if (idx == length)
- break;
-
- time = tmr.read_ms();
- }
-
- return (idx == 0) ? -1 : idx;
-}
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