ajfisher · January 3, 2017 23:51 · Mar 18, 2015 · Mar 18, 2015 · Mar 18, 2015 · Mar 18, 2015
diff --git a/_Pebble controlled NeoPixels using ESP8266.md b/_Pebble controlled NeoPixels using ESP8266.md
@@ -18,7 +18,7 @@ Video: https://www.youtube.com/watch?v=BeIQ47WBVXs
 
 ## Acknowledgements
 
-Thanks to [Andy Gelme](http://github.com/geekscape) for his excellent workshop on the ESP8266 and getting me up to speed on the Lua side.
+Thanks to [Andy Gelme](http://github.com/geekscape) for his [excellent workshop on the ESP8266](https://github.com/geekscape/nodemcu_esp8266) and getting me up to speed on the Lua side.
 
 ## Directions
 

diff --git a/_Pebble controlled NeoPixels using ESP8266.md b/_Pebble controlled NeoPixels using ESP8266.md
@@ -16,6 +16,10 @@ Video: https://www.youtube.com/watch?v=BeIQ47WBVXs
 * ESPlora
 * Pebble SDK and command line tools
 
+## Acknowledgements
+
+Thanks to [Andy Gelme](http://github.com/geekscape) for his excellent workshop on the ESP8266 and getting me up to speed on the Lua side.
+
 ## Directions
 
 * Using ESPTool, flash the ESP8266 with NodeMCU development branch (bins are in this gist) so it has WS8212 support.

diff --git a/_Pebble controlled NeoPixels using ESP8266.md b/_Pebble controlled NeoPixels using ESP8266.md
@@ -1,6 +1,6 @@
 This is the general instructions for how to get a pebble watch to talk to an ESP8266 and turn NeoPixels different colours.
 
-![Pebble Controlled NeoPixels](https://gist.github.com/ajfisher/ee6fadcd837a0f46be8d/raw/3e3f2dc8b7681b06322cfc411d08825d4d06e522/neopixel_pebblewatch.gif)
+![Pebble Controlled NeoPixels](https://igcdn-photos-g-a.akamaihd.net/hphotos-ak-xfa1/t51.2885-15/11023004_626914707452886_2000560514_n.jpg)
 
 Video: https://www.youtube.com/watch?v=BeIQ47WBVXs
 

diff --git a/neopixel_pebblewatch.gif b/neopixel_pebblewatch.gif
diff --git a/_Pebble controlled NeoPixels using ESP8266.md b/_Pebble controlled NeoPixels using ESP8266.md
@@ -1,6 +1,6 @@
 This is the general instructions for how to get a pebble watch to talk to an ESP8266 and turn NeoPixels different colours.
 
-![Pebble Controlled NeoPixels](neopixel_pebblewatch.gif)
+![Pebble Controlled NeoPixels](https://gist.github.com/ajfisher/ee6fadcd837a0f46be8d/raw/3e3f2dc8b7681b06322cfc411d08825d4d06e522/neopixel_pebblewatch.gif)
 
 Video: https://www.youtube.com/watch?v=BeIQ47WBVXs
 

diff --git a/_Pebble controlled NeoPixels using ESP8266.md b/_Pebble controlled NeoPixels using ESP8266.md
@@ -1,10 +1,8 @@
 This is the general instructions for how to get a pebble watch to talk to an ESP8266 and turn NeoPixels different colours.
 
-![Pebble Controlled NeoPixels](https://igcdn-photos-g-a.akamaihd.net/hphotos-ak-xfa1/t51.2885-15/11023004_626914707452886_2000560514_n.jpg)
+![Pebble Controlled NeoPixels](neopixel_pebblewatch.gif)
 
-Video:
-
-<iframe width="560" height="315" src="https://www.youtube.com/embed/BeIQ47WBVXs" frameborder="0" allowfullscreen></iframe>
+Video: https://www.youtube.com/watch?v=BeIQ47WBVXs
 
 ## Prereqs
 

diff --git a/neopixel_pebblewatch.gif b/neopixel_pebblewatch.gif
diff --git a/_Pebble controlled NeoPixels using ESP8266.md b/_Pebble controlled NeoPixels using ESP8266.md
@@ -1,8 +1,41 @@
-_This is a placeholder at the moment. Just watch this Gist for code etc coming over the next day or so_
+This is the general instructions for how to get a pebble watch to talk to an ESP8266 and turn NeoPixels different colours.
+
+![Pebble Controlled NeoPixels](https://igcdn-photos-g-a.akamaihd.net/hphotos-ak-xfa1/t51.2885-15/11023004_626914707452886_2000560514_n.jpg)
+
+Video:
+
+<iframe width="560" height="315" src="https://www.youtube.com/embed/BeIQ47WBVXs" frameborder="0" allowfullscreen></iframe>
 
 ## Prereqs
 
 * Pebble watch
 * ESP8266 ESP-01
 * NeoPixel strip (or ring or matrix or single pixel)
-* 
+
+## Software needed
+
+* ESPTool 
+* ESPlora
+* Pebble SDK and command line tools
+
+## Directions
+
+* Using ESPTool, flash the ESP8266 with NodeMCU development branch (bins are in this gist) so it has WS8212 support.
+* Using ESPlora, change config.lua to have SSID / PASSWORD of your network in them - upload all lua files to the ESP8266
+* Wire up the WS2812 strip so data line is connected to GPIO 2 (change this in server.lua if you use a different pin).
+* Reset the ESP8266 and note it's IP address in ESPlora when it comes up. You should now be able to hit the web server using
+
+```
+curl --data "red=255&green=0&blue=255" http://<IP address>
+```
+
+* Using CloudPebble, copy app.js contents into the app.js file (make a watch app project and use Pebble JS)
+* Change the HOST IP address to that of your ESP8266
+* Compile and then download the PBW file
+* Use the developer configuration (as documented by Pebble SDK setup) to run:
+
+```
+pebble install watch_led.pbw
+```
+
+That's it - you should be able to hit it as expected.
diff --git a/app.js b/app.js
@@ -0,0 +1,64 @@
+/**
+
+  Pebble - ESP8266 - NeoPixel controller
+  
+  Author: Andrew Fisher
+  Licence: MIT
+
+**/
+var UI = require('ui');
+var ajax = require('ajax');
+
+var HOST = '<<IP>>';
+
+
+// Connect to the ESP8266 and post the data
+function colour_request(r, g, b) {
+  //console.log("Making request");
+  //console.log("r:" + r + " g: " + g);
+
+  var req = {
+    url: HOST,
+    method: 'post',
+    data: {red:r, green:g, blue:b}
+  };
+
+  //console.log(JSON.stringify(req));
+
+  ajax(req,
+    function(data, status, request) {
+      console.log(data);
+    },
+    function(data, status, request) {
+      console.log('The ajax request failed: ' + data + status + JSON.stringify(request));
+    }
+  );
+
+}
+
+// Make a list of the colours to select
+var colours = [
+  { title: "OFF", r: 0, g: 0, b: 0, },
+  { title: "RED", r: 255, g: 0, b: 0, },
+  { title: "GREEN", r: 0, g: 255, b: 0, },
+  { title: "BLUE", r: 0, g: 0, b: 255, },
+  { title: "YELLOW", r: 255, g: 255, b: 0,  },
+  { title: "MAGENTA", r: 255, g: 0, b: 255, },
+  { title: "CYAN", r: 0, g: 255, b: 255, },
+  { title: "WHITE", r: 255, g: 255, b: 255, },
+];
+
+// Create the Menu
+var menu = new UI.Menu({
+  sections: [{
+    title: 'Choose LED colour',
+    items: colours
+  }]
+});
+
+// Send command when menu item is selected
+menu.on('select', function(e) {
+  colour_request(e.item.r, e.item.g, e.item.b);
+});
+
+menu.show();
diff --git a/application.lua b/application.lua
@@ -0,0 +1,11 @@
+local module = {}
+
+function module.start()
+  print("application start")
+  print("IP address: " .. wifi.sta.getip())
+
+  dofile("server.lua")
+
+end
+
+return module
diff --git a/config.lua b/config.lua
@@ -0,0 +1,8 @@
+local module = {}
+
+module.SSID = {}
+module.SSID["SSID"] = "PASSWORD"
+
+
+
+return module
diff --git a/init.lua b/init.lua
@@ -0,0 +1,4 @@
+app    = require("application")
+config = require("config")
+
+require("setup").start()
diff --git a/nodemcu_dev_0x00000.bin b/nodemcu_dev_0x00000.bin
diff --git a/nodemcu_dev_0x10000.bin b/nodemcu_dev_0x10000.bin
diff --git a/server.lua b/server.lua
@@ -0,0 +1,73 @@
+local PORT = 80
+local LED_PIN = 4 -- GPIO 2
+local BRIGHTNESS = 0.2 -- NeoPixels are BRIGHT.
+local NO_PIXELS = 17
+
+if server then
+     print("Closing existing server")
+     server:close()
+end
+
+print("Starting server on: " .. wifi.sta.getip() .. ":" .. PORT)
+
+server = net.createServer(net.TCP)
+server:listen(PORT, function(conn)
+
+     conn:on("receive", function(client, payload)
+          -- print(payload)
+          local head = ""
+          local body = ""
+          local colours = {}
+          colours["red"] = 0
+          colours["green"] = 0
+          colours["blue"] = 0
+
+          if (string.sub(payload, 1, 4) == "POST") then
+               head = head .. "HTTP/1.1 200 OK\r\n"
+               head = head .. "Content-Type: application/json\r\n"
+
+               -- now we find the RGB components. Going to do this simply
+               -- by ripping them out with a find statement
+               for c, v in pairs(colours) do
+                    local match = c .. "=(%d*)"
+                    _, _, colours[c] = string.find(payload, match)
+                    -- put in a catch here incase it goes nil
+               end
+
+               set_led_colour(colours, NO_PIXELS)
+
+               -- send the JSON back to confirm
+               body = body .. "{\"r\":" .. colours["red"] .. ", "
+               body = body .. "\"g\":" .. colours["green"] .. ", "
+               body = body .. "\"b\":" .. colours["blue"] .. "}"
+          else
+               head = head .. "HTTP/1.1 500 Server Error\r\n"
+               body = body .. "Please ensure you use a POST method"
+          end
+
+          body = body .. "\r\n" -- just tidy up the end of the file
+          head = head .. "Content-Length: " .. string.len(body) .. "\r\n\r\n"
+
+          --print(head .. body)
+          client:send(head .. body)
+
+     end)
+
+     conn:on("sent", function(client) 
+          client:close() 
+     end)
+
+end)
+
+
+function create_colour(red, green, blue)
+     -- takes the colours and makes single value for writing to the LEDs
+     local colour = string.char(green * BRIGHTNESS, red * BRIGHTNESS, blue * BRIGHTNESS)
+     return colour
+end
+
+function set_led_colour(colours, pixels)
+     -- takes the colour values and writes that to the number of pixels
+     -- assmues a table colours{"red":val, "green":val, "blue":val}
+     ws2812.write(LED_PIN, create_colour(colours["red"], colours["green"], colours["blue"]):rep(pixels))
+end
diff --git a/setup.lua b/setup.lua
@@ -0,0 +1,28 @@
+local module = {}
+
+local function wifi_wait_ip()
+  if wifi.sta.getip() then 
+    tmr.stop(1)
+--  print("wifi ready: " .. wifi.sta.getip())
+    app.start()
+  end 
+end
+
+local function wifi_start(aps)
+  for key,value in pairs(aps) do
+--    print("wifi AP: " .. key .. ": " .. value)
+    if config.SSID and config.SSID[key] then
+      wifi.sta.config(key, config.SSID[key])
+      wifi.sta.connect()
+      config.SSID = nil  -- more secure and save memory
+      tmr.alarm(1, 2500, 1, wifi_wait_ip)
+    end
+  end
+end
+
+function module.start()
+  wifi.setmode(wifi.STATION);
+  wifi.sta.getap(wifi_start)
+end
+
+return module
diff --git a/_Pebble controlled NeoPixels using ESP8266.md b/_Pebble controlled NeoPixels using ESP8266.md
@@ -0,0 +1,8 @@
+_This is a placeholder at the moment. Just watch this Gist for code etc coming over the next day or so_
+
+## Prereqs
+
+* Pebble watch
+* ESP8266 ESP-01
+* NeoPixel strip (or ring or matrix or single pixel)
+*