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 29:939372104145, committed 2015-04-28

Comitter:
mbedAustin
Date:
Tue Apr 28 20:17:51 2015 +0000
Parent:
28:91e65e22e63a
Child:
30:c035696b9397
Commit message:
Added IP Function, made all Serials RAWSerials;

Changed in this revision

ESP8266/ESP8266.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/ESP8266/ESP8266.cpp	Tue Apr 28 18:52:20 2015 +0000
+++ b/ESP8266/ESP8266.cpp	Tue Apr 28 20:17:51 2015 +0000
@@ -44,6 +44,7 @@
 extern Serial pc;
 
 ESP8266 * ESP8266::inst;
+char* ip = NULL;
 
 ESP8266::ESP8266(   PinName tx, PinName rx, PinName _reset, const char * ssid, const char * phrase, uint32_t baud):
     wifi(tx, rx), reset_pin(_reset), buf_ESP8266(256)
@@ -141,8 +142,9 @@
     char result[30] = {0};
     int check = 0;
     check = sendCommand("AT+CIFSR", NULL, result, 1000);
-    DBG("\r\nReceivedInfo for IP Command is: %s\r\n",result);
-    if(check){
+    //pc.printf("\r\nReceivedInfo for IP Command is: %s\r\n",result);
+    ip = ipString;
+    if(check) {
         // Success
         string resultString(result);
         uint8_t pos1 = 0, pos2 = 0;
@@ -155,13 +157,14 @@
         strncpy(ipString,resultString.substr(pos1,pos2).c_str(),sizeof(ipString));
         ipString[pos2 - pos1 +1] = 0; // null terminate string correctly.
         DBG("IP: %s\r\n",ipString);
-        
-    }else{
+        ip = ipString;
+
+    } else {
         // Failure
         DBG("getIPAddress() failed\r\n");
+        ip = NULL;
     }
-    
-    return ipString;
+    return ip;
 }
 
 bool ESP8266::gethostbyname(const char * host, char * ip)