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)

WiflyInterface.cpp@12:c5f0eac67a8a, 2014-10-08 (annotated)

Committer:
michaeljkoster
Date:
Wed Oct 08 19:57:58 2014 +0000
Revision:
12:c5f0eac67a8a
Parent:
1:fb4494783863 
Debug

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 1:fb4494783863 1 #include "WiflyInterface.h"
samux 1:fb4494783863 2
samux 1:fb4494783863 3 WiflyInterface::WiflyInterface( PinName tx, PinName rx, PinName reset, PinName tcp_status,
samux 1:fb4494783863 4 const char * ssid, const char * phrase, Security sec) :
samux 1:fb4494783863 5 Wifly(tx, rx, reset, tcp_status, ssid, phrase, sec)
samux 1:fb4494783863 6 {
samux 1:fb4494783863 7 ip_set = false;
samux 1:fb4494783863 8 }
samux 1:fb4494783863 9
samux 1:fb4494783863 10 int WiflyInterface::init()
samux 1:fb4494783863 11 {
samux 1:fb4494783863 12 state.dhcp = true;
samux 1:fb4494783863 13 reset();
samux 1:fb4494783863 14 return 0;
samux 1:fb4494783863 15 }
samux 1:fb4494783863 16
samux 1:fb4494783863 17 int WiflyInterface::init(const char* ip, const char* mask, const char* gateway)
samux 1:fb4494783863 18 {
samux 1:fb4494783863 19 state.dhcp = false;
samux 1:fb4494783863 20 this->ip = ip;
samux 1:fb4494783863 21 strcpy(ip_string, ip);
samux 1:fb4494783863 22 ip_set = true;
samux 1:fb4494783863 23 this->netmask = mask;
samux 1:fb4494783863 24 this->gateway = gateway;
samux 1:fb4494783863 25 reset();
samux 1:fb4494783863 26
samux 1:fb4494783863 27 return 0;
samux 1:fb4494783863 28 }
samux 1:fb4494783863 29
samux 1:fb4494783863 30 int WiflyInterface::connect()
samux 1:fb4494783863 31 {
samux 1:fb4494783863 32 return join();
samux 1:fb4494783863 33 }
samux 1:fb4494783863 34
samux 1:fb4494783863 35 int WiflyInterface::disconnect()
samux 1:fb4494783863 36 {
samux 1:fb4494783863 37 return Wifly::disconnect();
samux 1:fb4494783863 38 }
samux 1:fb4494783863 39
samux 1:fb4494783863 40 char * WiflyInterface::getIPAddress()
samux 1:fb4494783863 41 {
samux 1:fb4494783863 42 char * match = 0;
samux 1:fb4494783863 43 if (!ip_set) {
michaeljkoster 12:c5f0eac67a8a 44 if (!sendCommand("get ip a\r\n", NULL, ip_string))
samux 1:fb4494783863 45 return NULL;
samux 1:fb4494783863 46 exit();
samux 1:fb4494783863 47 flush();
samux 1:fb4494783863 48 match = strstr(ip_string, "<");
samux 1:fb4494783863 49 if (match != NULL) {
samux 1:fb4494783863 50 *match = '\0';
samux 1:fb4494783863 51 }
samux 1:fb4494783863 52 if (strlen(ip_string) < 6) {
samux 1:fb4494783863 53 match = strstr(ip_string, ">");
samux 1:fb4494783863 54 if (match != NULL) {
samux 1:fb4494783863 55 int len = strlen(match + 1);
samux 1:fb4494783863 56 memcpy(ip_string, match + 1, len);
samux 1:fb4494783863 57 }
samux 1:fb4494783863 58 }
samux 1:fb4494783863 59 ip_set = true;
samux 1:fb4494783863 60 }
samux 1:fb4494783863 61 return ip_string;
samux 1:fb4494783863 62 }