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: WiflyInterface.cpp

Revision:
1:fb4494783863
Child:
12:c5f0eac67a8a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WiflyInterface.cpp	Fri Aug 24 13:48:36 2012 +0000
@@ -0,0 +1,62 @@
+#include "WiflyInterface.h"
+
+WiflyInterface::WiflyInterface( PinName tx, PinName rx, PinName reset, PinName tcp_status,
+                                const char * ssid, const char * phrase, Security sec) :
+    Wifly(tx, rx, reset, tcp_status, ssid, phrase, sec)
+{
+    ip_set = false;
+}
+
+int WiflyInterface::init()
+{
+    state.dhcp = true;
+    reset();
+    return 0;
+}
+
+int WiflyInterface::init(const char* ip, const char* mask, const char* gateway)
+{
+    state.dhcp = false;
+    this->ip = ip;
+    strcpy(ip_string, ip);
+    ip_set = true;
+    this->netmask = mask;
+    this->gateway = gateway;
+    reset();
+
+    return 0;
+}
+
+int WiflyInterface::connect()
+{
+    return join();
+}
+
+int WiflyInterface::disconnect()
+{
+    return Wifly::disconnect();
+}
+
+char * WiflyInterface::getIPAddress()
+{
+    char * match = 0;
+    if (!ip_set) {
+        if (!sendCommand("get ip a\r", NULL, ip_string))
+            return NULL;
+        exit();
+        flush();
+        match = strstr(ip_string, "<");
+        if (match != NULL) {
+            *match = '\0';
+        }
+        if (strlen(ip_string) < 6) {
+            match = strstr(ip_string, ">");
+            if (match != NULL) {
+                int len = strlen(match + 1);
+                memcpy(ip_string, match + 1, len);
+            }
+        }
+        ip_set = true;
+    }
+    return ip_string;
+}
\ No newline at end of file