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)
Socket/TCSocketConnection.cpp
- Committer:
- mbedAustin
- Date:
- 2015-04-30
- Revision:
- 31:fd0eaf273b11
- Parent:
- 30:c035696b9397
File content as of revision 31:fd0eaf273b11:
/* 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 <cstring>
using std::memset;
using std::memcpy;
TCPSocketConnection::TCPSocketConnection() :
_is_connected(false)
{
}
int TCPSocketConnection::connect(const char* host, const int port)
{
// if (init_socket(SOCK_STREAM) < 0)
// return -1;
//
if (set_address(host, port) != 0)
return -1;
//
// if (lwip_connect(_sock_fd, (const struct sockaddr *) &_remoteHost, sizeof(_remoteHost)) < 0) {
// close();
// return -1;
// }
// _is_connected = true;
_is_connected = ESP8266->start(ESP_TCP_TYPE,_ipAddress,_port);
return _is_connected;
}
bool TCPSocketConnection::is_connected(void)
{
return _is_connected;
}
int TCPSocketConnection::send(char* data, int length)
{
// if ((_sock_fd < 0) || !_is_connected)
// return -1;
//
// if (!_blocking) {
// TimeInterval timeout(_timeout);
// if (wait_writable(timeout) != 0)
// return -1;
// }
//
// int n = lwip_send(_sock_fd, data, length, 0);
// _is_connected = (n != 0);
//
// return n;
return 0;
}
// -1 if unsuccessful, else number of bytes written
int TCPSocketConnection::send_all(char* data, int length)
{
// if ((_sock_fd < 0) || !_is_connected)
// return -1;
//
// int writtenLen = 0;
// TimeInterval timeout(_timeout);
// while (writtenLen < length) {
// if (!_blocking) {
// // Wait for socket to be writeable
// if (wait_writable(timeout) != 0)
// return writtenLen;
// }
//
// int ret = lwip_send(_sock_fd, data + writtenLen, length - writtenLen, 0);
// if (ret > 0) {
// writtenLen += ret;
// continue;
// } else if (ret == 0) {
// _is_connected = false;
// return writtenLen;
// } else {
// return -1; //Connnection error
// }
// }
// return writtenLen;
return 0;
}
int TCPSocketConnection::receive(char* data, int length)
{
// if ((_sock_fd < 0) || !_is_connected)
// return -1;
//
// if (!_blocking) {
// TimeInterval timeout(_timeout);
// if (wait_readable(timeout) != 0)
// return -1;
// }
//
// int n = lwip_recv(_sock_fd, data, length, 0);
// _is_connected = (n != 0);
//
// return n;
return 0;
}
// -1 if unsuccessful, else number of bytes received
int TCPSocketConnection::receive_all(char* data, int length)
{
// if ((_sock_fd < 0) || !_is_connected)
// return -1;
//
// int readLen = 0;
// TimeInterval timeout(_timeout);
// while (readLen < length) {
// if (!_blocking) {
// //Wait for socket to be readable
// if (wait_readable(timeout) != 0)
// return readLen;
// }
//
// int ret = lwip_recv(_sock_fd, data + readLen, length - readLen, 0);
// if (ret > 0) {
// readLen += ret;
// } else if (ret == 0) {
// _is_connected = false;
// return readLen;
// } else {
// return -1; //Connnection error
// }
// }
// return readLen;
return 0;
}
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