ESP8266 driver using the NodeMCU interface
Dependencies: BufferedSerial
Dependents: esp8266_nodeMCU1 esp8266_2_thingspeak1 Solarator_0-0-2 IoTBurglar_and_Fire_AlarmSystem ... more
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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)
Revision 22:c4360e61486a, committed 2014-12-02
- Comitter:
- michaeljkoster
- Date:
- Tue Dec 02 16:02:21 2014 +0000
- Parent:
- 21:690526f05fe6
- Child:
- 23:de9221771e96
- Commit message:
- Add state.cmdMode and some cleanup
Changed in this revision
--- a/ESP8266/ESP8266.cpp Tue Dec 02 04:16:26 2014 +0000 +++ b/ESP8266/ESP8266.cpp Tue Dec 02 16:02:21 2014 +0000 @@ -66,6 +66,9 @@ attach_rx(false); wifi.baud(9600); // initial baud rate of the ESP8266 + + state.associated = false; + state.cmdMode = false; } bool ESP8266::join() @@ -97,7 +100,9 @@ sendCommand("AT+CIPMODE=1", "OK", NULL, 1000);// go into transparent mode sendCommand("AT+CIPSEND", ">", NULL, 1000);// go into transparent mode - + pc.printf("Data Mode\r\n"); + state.cmdMode = false; + return true; } @@ -105,6 +110,7 @@ { send("+++",3); wait(1); + state.cmdMode = true; sendCommand("AT+CIPCLOSE","OK", NULL, 10000); return true; } @@ -150,7 +156,12 @@ void ESP8266::reset() { + send("+++",3); + wait(1); + state.cmdMode = true; + sendCommand("AT", "OK", NULL, 1000); sendCommand("AT+RST", "ready", NULL, 10000); + state.associated = false; /* reset_pin = 0; wait(0.2); @@ -172,7 +183,7 @@ while (wifi.readable()){ c=wifi.getc(); buf_ESP8266.queue(c); - pc.printf("%c",c); //debug echo + if (state.cmdMode) pc.printf("%c",c); //debug echo } }
--- a/ESP8266/ESP8266.h Tue Dec 02 04:16:26 2014 +0000 +++ b/ESP8266/ESP8266.h Tue Dec 02 16:02:21 2014 +0000 @@ -187,6 +187,7 @@ typedef struct STATE { bool associated; + bool cmdMode; } State; State state;
--- a/Socket/UDPSocket.cpp Tue Dec 02 04:16:26 2014 +0000 +++ b/Socket/UDPSocket.cpp Tue Dec 02 16:02:21 2014 +0000 @@ -68,7 +68,8 @@ int idx = 0; int nb_available = 0; int time = -1; - + tmr.start(); + if (_blocking) { while (1) { nb_available = wifi->readable(); @@ -78,7 +79,7 @@ } } else { - tmr.start(); + tmr.reset(); while (time < _timeout){ nb_available = wifi->readable(); @@ -90,8 +91,7 @@ if (nb_available == 0) return nb_available; } - tmr.start(); - + tmr.reset(); while (time < _timeout) { nb_available = wifi->readable(); @@ -106,7 +106,6 @@ time = tmr.read_ms(); } - readEndpoint(remote); return (idx == 0) ? -1 : idx; }