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| − | {{Project
| + | #REDIRECT [[ESP8266]] |
| − | |State=Active
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| − | |Members=Prodigity, Da Syntax
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| − | |Description=Playing around with cheap wifi modules
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| − | }}
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| − | | |
| − | == synopsis ==
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| − | To make the ESP8266 more accessible to everyone I have created a "programmer" which allows for easy firmware uploading and communication with the module.
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| − | <br>
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| − | | |
| − | Behold, the ESP^2 (esp egg salad programmer).
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| − | [[Image:Runprogrun.JPG]]
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| − | | |
| − | More info to follow soon..
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| − | | |
| − | === Revision 1.1 ===
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| − | [[User:Xopr|xopr]] Modified the ESP^2 a bit:
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| − | * Added three wires (VCC, GND and GPIO2) for Dallas temperature sensor debugging (wire ends are insulated)
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| − | * Added pullup resistor was added so GPIO0 can be used after the device has been booted
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| − | * Added resistor to the 5V ESP^2 TX signal (should be two diodes I guess, the resistor divider didn't work)
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| − | | |
| − | == Using Arduino 1.6.4 to program the ESP8266 ==
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| − | Taken from https://github.com/esp8266/arduino
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| − | * Install Arduino 1.6.4 from the [http://www.arduino.cc/en/main/software Arduino website].
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| − | * Start Arduino and open Perferences window.
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| − | * Enter ''http://arduino.esp8266.com/package_esp8266com_index.json'' into Additional Board Manager URLs field. You can add multiple URLs, separating them with commas.
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| − | * Open Boards Manager from Tools > Board menu and install ESP8266 platform (and don't forget to select your ESP8266 board from Tools > Board menu after installation).
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| − | * For the ESP^2, the device name (under Linux) is /dev/ttyACM3
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| − | * Change the programmer from ''AVRISP mkII'' to ''ArduinoISP''
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| − | * poweroff ESP (either unplug the USB or pull the device from the socket
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| − | * set the switch to ''prog''
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| − | * poweron the ESP
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| − | * You can now upload your sketch
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| − | | |
| − | === Webserver serving JSON ===
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| − | This sketch provides a webserver-like interface and provides a json file (somewhat compatible with [[SpaceAPI]])
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| − | There is a version running in the space in a 'hot' zone, and accessible on [http://192.168.1.132 http://192.168.1.132]
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| − | You can find the code [[ESP8166-DS18S20|here]]
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| − | | |
| − | === SpaceState ===
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| − | This sketch is a web client and will update the SpaceState
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| − | You can find the code [[ESP8166-SpaceState|here]]
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| − | | |
| − | == loading scripts from a webserver ==
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| − | I ([[User:Da Syntax|Da Syntax]]) got tired from typing the scripts line for line into the lua console of the nodeMCU firmware. I wrote a little function to load the scripts from a webserver running on my laptop. This way I can just save the script on my laptop and load it to my ESP8266 calling 2 functions ( netload() and dofile("netloaded.lua") )
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| − | <pre>function netload()
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| − | conn=net.createConnection(net.TCP, 0)
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| − | conn:on("receive", function(conn, payload)
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| − | print(payload)
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| − | file.open("netloaded.lua", "w")
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| − | file.write(payload)
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| − | file.close()
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| − | end)
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| − | conn:connect(8080,"192.168.1.193")
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| − | conn:send("GET /test.lua HTTP/1.1\r\nHost: www.example.com\r\n" .."Connection: keep-alive\r\nAccept: */*\r\n\r\n")
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| − | end
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| − | </pre>
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| − | === Future plans ===
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| − | | |
| − | *Send mac address of the wifi module in get so the web server can return device specific firmwares
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| − | *Put the script between specific tags so there won't be any problems with headers that are added by the web server + gives the possibility to add meta data (e.g. version of script or a signature)
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| − | *Create a nice php/mysql webapp to easily manage the scripts per module
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