Rewrite whole project as a Arduino IDE project

The lua flashing never really worked and I had so many problems
flashing the hardware. The Arduino IDE does it much better so this
is now written in thes Arduino language which looks like C++.

Still need to explain the hardware setup.

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "luatool"]
-	path = luatool
-	url = https://github.com/4refr0nt/luatool.git

README.md

@@ -5,26 +5,28 @@ This is my first stab at a wireless termometer.
 ## Getting the code
 
     git clone https://github.com/jeena/esp8266-temperature.git
-    cd esp8266-temperature
-    git submodule init
-    git submodule update
 
 ## Setup
 
-It expects a credentials.lua file with content like this:
+Open the esptmp.ino file in the Arduino IDE.
 
-    SSID = "myssid"
+It expects the credentials for your WiFi in the file like this:
-    PASSWORD = "mypasswd"
 
-Copy the credentials.lua.example file into credentials.lua and change
+    const char* ssid = "myssid";
-it so et matches your wifi credentials.
+    const char* password = "mypass";
+
+Change the credentials in esptmp.ino so it matches your wifi credentials.
 
 ## Flashing
 
-To put the code onto the ESP8266 you need the luatool which is
+1. Under File -> Preferences set as Additional Boards Manager URLs:
-included as a git submodule.
+   http://arduino.esp8266.com/versions/2.3.0/package_esp8266com_index.json
+2. Chose under Tools -> Board the "Node MCU 1.0 (ESP12-E Module)"
+3. Press the Upload button
 
-Use flash.sh to flash it via /dev/ttyUSB0
+## Hardware Setup
+
+t.b.d.
 
 ## License
 
@@ -36,4 +38,4 @@ esp8266-temperature is free software: you can redistribute it and/or modify it u
 
 esp8266-temperature is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License along with esp8266-temperature. If not, see http://www.gnu.org/licenses/.
+You should have received a copy of the GNU General Public License along with esp8266-temperature. If not, see http://www.gnu.org/licenses/.

application.lua

@@ -1,8 +0,0 @@
-pin = 4
-ow.setup(pin)
-
-counter=0
-lasttemp=-999
-
-dofile("dallas.lua")
-dofile("server.lua")

credentials.lua.example

@@ -1,2 +0,0 @@
-SSID = "MyWifi"
-PASSWORD = "mypasswd"

dallas.lua

@@ -1,6 +0,0 @@
-function getTemp()
-    t = require("ds18b20")
-    t.setup(9)
-    addrs = t.addrs()
-    lasttemp = t.read(nil,t.C)
-end

ds18b20.lua

@@ -1,143 +0,0 @@
---------------------------------------------------------------------------------
--- DS18B20 one wire module for NODEMCU
--- NODEMCU TEAM
--- LICENCE: http://opensource.org/licenses/MIT
--- Vowstar <vowstar@nodemcu.com>
--- 2015/02/14 sza2 <sza2trash@gmail.com> Fix for negative values
---------------------------------------------------------------------------------
-
--- Set module name as parameter of require
-local modname = ...
-local M = {}
-_G[modname] = M
-
--- Local used variables
-
--- DS18B20 dq pin
-local pin = nil
--- DS18B20 default pin
-local defaultPin = 9
-
--- Local used modules
-
--- Table module
-local table = table
--- String module
-local string = string
--- One wire module
-local ow = ow
--- Timer module
-local tmr = tmr
--- Limited to local environment
-setfenv(1,M)
-
--- Implementation
-
-C = 'C'
-F = 'F'
-K = 'K'
-function setup(dq)
-  pin = dq
-  if(pin == nil) then
-    pin = defaultPin
-  end
-  ow.setup(pin)
-end
-
-function addrs()
-  setup(pin)
-  tbl = {}
-  ow.reset_search(pin)
-  repeat
-    addr = ow.search(pin)
-    if(addr ~= nil) then
-      table.insert(tbl, addr)
-    end
-    tmr.wdclr()
-  until (addr == nil)
-  ow.reset_search(pin)
-  return tbl
-end
-
-function readNumber(addr, unit)
-  result = nil
-  setup(pin)
-  flag = false
-  if(addr == nil) then
-    ow.reset_search(pin)
-    count = 0
-    repeat
-      count = count + 1
-      addr = ow.search(pin)
-      tmr.wdclr()
-    until((addr ~= nil) or (count > 100))
-    ow.reset_search(pin)
-  end
-  if(addr == nil) then
-    return result
-  end
-  crc = ow.crc8(string.sub(addr,1,7))
-  if (crc == addr:byte(8)) then
-    if ((addr:byte(1) == 0x10) or (addr:byte(1) == 0x28)) then
-      -- print("Device is a DS18S20 family device.")
-      ow.reset(pin)
-      ow.select(pin, addr)
-      ow.write(pin, 0x44, 1)
-      -- tmr.delay(1000000)
-      present = ow.reset(pin)
-      ow.select(pin, addr)
-      ow.write(pin,0xBE,1)
-      -- print("P="..present)
-      data = nil
-      data = string.char(ow.read(pin))
-      for i = 1, 8 do
-        data = data .. string.char(ow.read(pin))
-      end
-      -- print(data:byte(1,9))
-      crc = ow.crc8(string.sub(data,1,8))
-      -- print("CRC="..crc)
-      if (crc == data:byte(9)) then
-        t = (data:byte(1) + data:byte(2) * 256)
-        if (t > 32767) then
-          t = t - 65536
-        end
-
-		if (addr:byte(1) == 0x28) then
-		  t = t * 625  -- DS18B20, 4 fractional bits
-		else
-		  t = t * 5000 -- DS18S20, 1 fractional bit
-		end
-
-        if(unit == nil or unit == 'C') then
-          -- do nothing
-        elseif(unit == 'F') then
-          t = t * 1.8 + 320000
-        elseif(unit == 'K') then
-          t = t + 2731500
-        else
-          return nil
-        end
-        t = t / 10000
-        return t
-      end
-      tmr.wdclr()
-    else
-    -- print("Device family is not recognized.")
-    end
-  else
-  -- print("CRC is not valid!")
-  end
-  return result
-end
-
-function read(addr, unit)
-  t = readNumber(addr, unit)
-  if (t == nil) then
-    return nil
-  else
-    return t
-  end
-end
-
--- Return module table
-return M

esptmp.ino

@@ -0,0 +1,148 @@
+  /*
+  ESP8266 mDNS responder sample
+
+  This is an example of an HTTP server that is accessible
+  via http://esp8266.local URL thanks to mDNS responder.
+
+  Instructions:
+  - Update WiFi SSID and password as necessary.
+  - Flash the sketch to the ESP8266 board
+  - Install host software:
+    - For Linux, install Avahi (http://avahi.org/).
+    - For Windows, install Bonjour (http://www.apple.com/support/bonjour/).
+    - For Mac OSX and iOS support is built in through Bonjour already.
+  - Point your browser to http://esp8266.local, you should see a response.
+
+*/
+
+
+#include <ESP8266WiFi.h>
+#include <ESP8266mDNS.h>
+#include <WiFiClient.h>
+#include <OneWire.h>
+#include <DallasTemperature.h>
+
+const char* ssid = "Jeenas";
+const char* password = "mypass";
+
+// Data wire is conntec to the Arduino digital pin 5
+#define ONE_WIRE_BUS 5
+// Setup a oneWire instance to communicate with any OneWire devices
+OneWire oneWire(ONE_WIRE_BUS);
+// Pass our oneWire reference to Dallas Temperature sensor
+DallasTemperature sensors(&oneWire);
+
+// TCP server at port 80 will respond to HTTP requests
+WiFiServer server(80);
+
+String getTemp()
+{
+  // Call sensors.requestTemperatures() to issue a global temperature and Requests to all devices on the bus
+  sensors.requestTemperatures();
+  // Why "byIndex"? You can have more than one IC on the same bus. 0 refers to the first IC on the wire
+  return String(sensors.getTempCByIndex(0));
+}
+
+void setup(void)
+{
+  Serial.begin(115200);
+
+  // Connect to WiFi network
+  WiFi.begin(ssid, password);
+  Serial.println("");
+
+  // Wait for connection
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.println("");
+  Serial.print("Connected to ");
+  Serial.println(ssid);
+  Serial.print("IP address: ");
+  Serial.println(WiFi.localIP());
+
+  // Set up mDNS responder:
+  // - first argument is the domain name, in this example
+  //   the fully-qualified domain name is "esp8266.local"
+  // - second argument is the IP address to advertise
+  //   we send our IP address on the WiFi network
+  if (!MDNS.begin("esp8266")) {
+    Serial.println("Error setting up MDNS responder!");
+    while (1) {
+      delay(1000);
+    }
+  }
+  Serial.println("mDNS responder started");
+
+  // Start TCP (HTTP) server
+  server.begin();
+  Serial.println("TCP server started");
+
+  // Add service to MDNS-SD
+  MDNS.addService("http", "tcp", 80);
+
+  // Start up the library
+  sensors.begin();
+}
+
+void loop(void)
+{
+  // Check if a client has connected
+  WiFiClient client = server.available();
+  if (!client) {
+    return;
+  }
+  
+  Serial.println("");
+  Serial.println("New client");
+
+  // Wait for data from client to become available
+  while (client.connected() && !client.available()) {
+    delay(1);
+  }
+
+  // Read the first line of HTTP request
+  String req = client.readStringUntil('\r');
+
+  // First line of HTTP request looks like "GET /path HTTP/1.1"
+  // Retrieve the "/path" part by finding the spaces
+  int addr_start = req.indexOf(' ');
+  int addr_end = req.indexOf(' ', addr_start + 1);
+  if (addr_start == -1 || addr_end == -1) {
+    Serial.print("Invalid request: ");
+    Serial.println(req);
+    return;
+  }
+  req = req.substring(addr_start + 1, addr_end);
+  Serial.print("Request: ");
+  Serial.println(req);
+  client.flush();
+
+  String s;
+  if (req == "/")
+  {
+    IPAddress ip = WiFi.localIP();
+    String ipStr = String(ip[0]) + '.' + String(ip[1]) + '.' + String(ip[2]) + '.' + String(ip[3]);
+    s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>Hello from ESP8266 at ";
+    s += ipStr;
+    s += "  </html>\r\n\r\n";
+    Serial.println("Sending 200");
+  }
+  else if (req == "/tmp")
+  {
+    s = getTemp();
+    s = "HTTP/1.1 200 OK\r\nContent-Type: text/plain\r\n\r\n";
+    s += getTemp();
+    Serial.println("Sending 200");
+  }
+  else
+  {
+    s = "HTTP/1.1 404 Not Found\r\n\r\n";
+    Serial.println("Sending 404");
+  }
+  client.print(s);
+
+  Serial.println("Done with client");
+}
+

flash.sh

@@ -1,11 +0,0 @@
-#!/bin/sh
-
-luafiles=`find . -name "*.lua" -not -path "./luatool/*"  -exec basename \{} \;`
-
-
-
-for f in $luafiles
-do
-    sudo python2 ./luatool/luatool/luatool.py --port /dev/ttyUSB0 --src $f --dest $f -b 74880 --delay 0.05
-done
-

init.lua

@@ -1,29 +0,0 @@
--- load credentials, 'SSID' and 'PASSWORD' declared and initialize in there
-dofile("credentials.lua")
-
-function startup()
-    if file.open("init.lua") == nil then
-        print("init.lua deleted or renamed")
-    else
-        print("Running")
-        file.close("init.lua")
-        -- the actual application is stored in 'application.lua'
-        dofile("application.lua")
-    end
-end
-
-print("Connecting to WiFi access point...")
-wifi.setmode(wifi.STATION)
-wifi.sta.config(SSID, PASSWORD)
--- wifi.sta.connect() not necessary because config() uses auto-connect=true by default
-tmr.alarm(1, 1000, 1, function()
-    if wifi.sta.getip() == nil then
-        print("Waiting for IP address...")
-    else
-        tmr.stop(1)
-        print("WiFi connection established, IP address: " .. wifi.sta.getip())
-        print("You have 3 seconds to abort")
-        print("Waiting...")
-        tmr.alarm(0, 3000, 0, startup)
-    end
-end)

luatool

@@ -1 +0,0 @@
-Subproject commit 28ff7a18c802adf9beac211226e1673ec4b70a8d

server.lua

@@ -1,27 +0,0 @@
-temp = -999
-
-t = require("ds18b20")
-t.setup(4)
-addrs = t.addrs()
-
-mycounter=0
-srv=net.createServer(net.TCP) 
-srv:listen(80, function(conn) 
-    conn:on("receive", function(conn, payload) 
-        if string.find(payload,"?myarg=") then
-            mycounter=mycounter+1
-            m="<br>Value= " .. string.sub(payload, string.find(payload,"?myarg=")+7,string.find(payload,"HTTP")-2)
-        else 
-            m=""
-        end
-
-        _temp = t.read(nil,t.C)
-
-        if _temp ~= nil then
-           temp = _temp
-        end
-
-        conn:send("<h1> Hello, this is Jeenas ESP8266.</h1><p>How are you today.<br> Count=" .. mycounter .. m .. "<br>Heap=" .. node.heap() .. "<br>Temp=" .. temp)
-    end) 
-    conn:on("sent", function(conn) conn:close() end) 
-end)