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/TCPSocketServer.cpp
- Revision:
- 1:fb4494783863
- Child:
- 3:9aa05e19c62e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Socket/TCPSocketServer.cpp Fri Aug 24 13:48:36 2012 +0000
@@ -0,0 +1,70 @@
+/* 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;
+
+ wifi->exit();
+ 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;
+ }
+ }
+ }
+ }
+}
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ESP8266

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