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: Wifly/Wifly.cpp

Revision:
7:3152fcc74390
Parent:
1:fb4494783863
Child:
8:04afe20d7927
Child:
10:131675c17372
--- a/Wifly/Wifly.cpp	Fri Aug 24 13:48:36 2012 +0000
+++ b/Wifly/Wifly.cpp	Fri Nov 08 21:27:08 2013 +0000
@@ -22,7 +22,7 @@
 #include <algorithm>
 
 //Debug is disabled by default
-#if (0 && defined(TARGET_LPC1768))
+#if (1 && defined(TARGET_LPC1768))
 #define DBG(x, ...) std::printf("[Wifly : DBG]"x"\r\n", ##__VA_ARGS__);
 #define WARN(x, ...) std::printf("[Wifly : WARN]"x"\r\n", ##__VA_ARGS__);
 #define ERR(x, ...) std::printf("[Wifly : ERR]"x"\r\n", ##__VA_ARGS__);
@@ -109,7 +109,7 @@
 
         // ssid
         sprintf(cmd, "set w s %s\r", ssid);
-        if (!sendCommand(cmd, "AOK"))
+        if (!sendCommand(cmd, "AOK", NULL, 1000))
             continue;
 
         //auth
@@ -141,7 +141,7 @@
             else if (state.sec == WEP_128)
                 sprintf(cmd, "set w k %s\r", phrase);
 
-            if (!sendCommand(cmd, "AOK"))
+            if (!sendCommand(cmd, "AOK", NULL, 1000))
                 continue;
         }
 
@@ -149,9 +149,12 @@
         sprintf(cmd, "join\r");
         if (!sendCommand(cmd, "Associated", NULL, 3000))
             continue;
+        
+        if (!sendCommand("", "IP=", NULL, 10000))
+            continue;
 
         if (state.dhcp) {
-            if (!sendCommand("", "DHCP=ON", NULL, 3000))
+            if (!sendCommand("get i\r", "DHCP=ON", NULL, 3000))
                 continue;
         }
 
@@ -317,7 +320,7 @@
     if (state.cmd_mode)
         return true;
         
-    if (send("$$$", 3, "CMD") == -1) {
+    if (send("$$$", 3, "CMD") == -1 && send("\r",1,">") != true) {
         ERR("cannot enter in cmd mode\r\n");
         return false;
     }