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)

Files at this revision

API Documentation at this revision

Revision 19:fb8d5bff2076, committed 2014-12-01

Comitter:
michaeljkoster
Date:
Mon Dec 01 08:56:54 2014 +0000
Parent:
18:60422852e99c
Child:
20:d764237405c2
Commit message:
sync

Changed in this revision

ESP8266/ESP8266.cpp Show annotated file Show diff for this revision Revisions of this file
ESP8266/ESP8266.h Show annotated file Show diff for this revision Revisions of this file
Socket/UDPSocket.cpp Show annotated file Show diff for this revision Revisions of this file
Socket/UDPSocket.h Show annotated file Show diff for this revision Revisions of this file 
--- a/ESP8266/ESP8266.cpp	Mon Dec 01 08:25:23 2014 +0000
+++ b/ESP8266/ESP8266.cpp	Mon Dec 01 08:56:54 2014 +0000
@@ -220,9 +220,8 @@
     const char* bufptr=buf;
     for(int i=0; i<len; i++){
         putc((int)*bufptr++);
-        wait(.005);
     }
-    return true;
+    return len;
 }
 
 bool ESP8266::sendCommand(const char * cmd, const char * ACK, char * res, int timeout)
@@ -342,16 +341,3 @@
     DBG("result: %d\r\n", result)
     return result;
 }
-
-void ESP8266::ATcommand(char* command){
-    char* cmd=command;
-    while(!wifi.writeable() || wifi.readable()){}
-    while(*cmd){
-        wifi.putc((int)*cmd++);
-        wait(.005); // wait for the echo
-        while(!wifi.writeable() || wifi.readable()){}
-    }
-    wifi.putc(13); //CR
-    while(!wifi.writeable() || wifi.readable()){}
-    wifi.putc(10); //LF
-}

--- a/ESP8266/ESP8266.h	Mon Dec 01 08:25:23 2014 +0000
+++ b/ESP8266/ESP8266.h	Mon Dec 01 08:56:54 2014 +0000
@@ -181,7 +181,6 @@
 
     static ESP8266 * inst;
 
-    void ATcommand(char* command);
     void attach_rx(bool null);
     void handler_rx(void);
 

--- a/Socket/UDPSocket.cpp	Mon Dec 01 08:25:23 2014 +0000
+++ b/Socket/UDPSocket.cpp	Mon Dec 01 08:56:54 2014 +0000
@@ -27,6 +27,7 @@
 {
     endpoint_configured = false;
     endpoint_read = false;
+    Endpoint currentEndpoint;
 }
 
 int UDPSocket::init(void)
@@ -101,10 +102,12 @@
 
 bool UDPSocket::confEndpoint(Endpoint & ep)
 {
+    currentEndpoint = ep;
     return true;
 }
 
 bool UDPSocket::readEndpoint(Endpoint & ep)
 {
+    ep = currentEndpoint;
     return true;
 }

--- a/Socket/UDPSocket.h	Mon Dec 01 08:25:23 2014 +0000
+++ b/Socket/UDPSocket.h	Mon Dec 01 08:56:54 2014 +0000
@@ -67,6 +67,7 @@
     bool readEndpoint(Endpoint & ep);
     bool endpoint_configured;
     bool endpoint_read;
+    Endpoint currentEndpoint;
     
 };