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/UDPSocket.cpp

Revision:
12:c5f0eac67a8a
Parent:
4:0bcec6272784
Child:
13:41098c907200
--- a/Socket/UDPSocket.cpp	Tue Jun 03 18:43:14 2014 +0000
+++ b/Socket/UDPSocket.cpp	Wed Oct 08 19:57:58 2014 +0000
@@ -21,6 +21,8 @@
 #include <string>
 #include <algorithm>
 
+extern Serial pc;
+
 UDPSocket::UDPSocket()
 {
     endpoint_configured = false;
@@ -40,29 +42,30 @@
     char cmd[17];
     
     // set local port
-    sprintf(cmd, "set i l %d\r", port);
-    if (!wifi->sendCommand(cmd, "AOK"))
-        return -1;
+    sprintf(cmd, "set i l %d\n\r", port);
+    if (!wifi->sendCommand(cmd, "AOK")){
+        pc.printf("bind to port failed\r\n");
+        return -1;}
         
     // save
-    if (!wifi->sendCommand("save\r", "Stor"))
-        return -1;
+    //if (!wifi->sendCommand("save\n\r", "Stor"))
+        //return -1;
     
     // reboot
-    wifi->reboot();
+    //wifi->reboot();
     
     // set udp protocol
-    wifi->setProtocol(UDP);
-    
+    //wifi->setProtocol(UDP);
+    /*
     // connect the network
     if (wifi->isDHCP()) {
-        if (!wifi->sendCommand("join\r", "DHCP=ON", NULL, 10000))
+        if (!wifi->sendCommand("join\n\r", "DHCP=ON", NULL, 10000))
             return -1;
     } else {
-        if (!wifi->sendCommand("join\r", "Associated", NULL, 10000))
+        if (!wifi->sendCommand("join\n\r", "Associated", NULL, 10000))
             return -1;
     }
-        
+    */    
     // exit
     wifi->exit();
     wifi->flush();
@@ -104,7 +107,8 @@
                 break;
             }
         }
-    }
+        pc.printf("UDPsocket::receiveFrom: %d bytes\r\n", nb_available);
+   }
 
     tmr.start();
 
@@ -135,12 +139,12 @@
         host = ep.get_address();
         if (host[0] != '\0') {
             // set host
-            sprintf(cmd, "set i h %s\r", host);
+            sprintf(cmd, "set i h %s\r\n", host);
             if (!wifi->sendCommand(cmd, "AOK"))
                 return false;
                 
             // set remote port
-            sprintf(cmd, "set i r %d\r", ep.get_port());
+            sprintf(cmd, "set i r %d\r\n", ep.get_port());
             if (!wifi->sendCommand(cmd, "AOK"))
                 return false;
                 
@@ -161,7 +165,7 @@
     string addr;
     int port;
     if (!endpoint_read) {
-        if (!wifi->sendCommand("get ip\r", NULL, recv))
+        if (!wifi->sendCommand("get ip\r\n", NULL, recv))
             return false;
         wifi->exit();
         str = recv;