Farrukh Hussain
ESP8266 webserver using AT commands, can work with any mbed platform, tested on STM32F407 and LPC1768. Only need to update pin configuration to make it work for respective board.
Objective was to write ESP8266 interfacing code that should be able to work with any microcontroller and any C/C++ compiler. Speed was of prime importance, I've tested several mbed examples for ESP8266, all work too slow, is hard to run real server with available libraries, so I've written my own interrupt based functions. ESP8266 webserver using AT commands, can work with any mbed platform, tested on STM32F407 and LPC1768. Only need to update pin configuration to make it work for respective board. Also tested on PIC18 using mikroC PRO for PIC. Here are some videos that show how this project works
Interfacing esp8266 with stm32f407 https://youtu.be/nabJv9hEc64
Interfacing esp8266 with stm32f407 and using Android app for voice commands https://youtu.be/svKGvChiNWk
Interfacing ESP8266 with LPC1768 https://youtu.be/FOXCza6HQII
Interfacing ESP8266 with PIC18 https://youtu.be/F53VvpxJuWk
Complete course in progress, few tutorials uploaded already, https://www.youtube.com/watch?v=QVhWVu8NnZc&list=PLl7pvqnJQnZCON2TmYFSuAKT38ztHoK86
For Suggestion, Discussion, questions, join my microcontroller projects group https://web.facebook.com/groups/picMicrocontrollers/
Diff: main.cpp
- Revision:
- 0:89cb04c5c613
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sun Jun 18 09:57:20 2017 +0000
@@ -0,0 +1,641 @@
+#include "mbed.h"
+
+#define BUFFER_SIZE 3000
+#define REQ_LINE_BUFF_SIZE 100
+#define UNKNOWN 0
+#define OK 1
+#define ERROR 2
+#define FAIL 3
+#define READY 4
+#define READY_TO_WRITE_TCP 5
+
+
+const char get_analog_outputs_status[]="/analog_outputs";
+const char get_Toggle_Output[]="/digital_outputs/toggle";
+const char get_analog_inputs_status[]="/analog_inputs";
+const char get_analog_output_update[]="/analog_outputs/update";
+const char get_digital_output_status[]="/digital_outputs";
+const char get_digital_inputs_html[]="/dinputs.html";
+const char get_digital_input_status[]="/digital_inputs";
+const char get_index_html[]="/index.html";
+const char get_analog_outputs[]="/anoutputs.html";
+const char get_analog_inputs_html[]="/aninputs.html";
+
+
+const char jsonHeader[]="HTTP/1.1 200 OK\n"
+ "Content-type: application/json\r\n\r\n";
+
+const char textPlainHeader[]="HTTP/1.1 200 OK\n"
+ "Content-type: text/plain\r\n\r\n";
+
+const char index_html[]="HTTP/1.1 200 OK\n"
+ "Content-type: text/html\r\n\r\n"
+ "<!DOCTYPE html>\n<html>\n<head>\n<title>esp</title>\n<link rel=stylesheet type=text/css href=css/style.css>\n<script src=https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js></script>\n<script>$(document).ready(function(){setInterval(\"get_digital_output_status()\",2000)});function get_digital_output_status(){var a=\"/digital_outputs\";$.ajax({url:a,dataType:\"json\",success:function(b){if(b.digital_outputs.dout1==1){$(\"#dout1\").html(\"HIGH\")}else{$(\"#dout1\").html(\"LOW\")}if(b.digital_outputs.dout2==1){$(\"#dout2\").html(\"HIGH\")}else{$(\"#dout2\").html(\"LOW\")}if(b.digital_outputs.dout3==1){$(\"#dout3\").html(\"HIGH\")}else{$(\"#dout3\").html(\"LOW\")}if(b.digital_outputs.dout4==1){$(\"#dout4\").html(\"HIGH\")}else{$(\"#dout4\").html(\"LOW\")}},timeout:2000})}function digital_output_toggle(a){var b=\"/digital_outputs/toggle?pin=\"+a;$.ajax({url:b,dataType:\"text\",success:function(c){if(c==\"1\"){$(\"#\"+a).html(\"HIGH\")}else{if(c==\"0\"){$(\"#\"+a).html(\"LOW\")}else{alert(\"failed to toggle digital output\")}}},timeout:2000})};</script>\n</head>\n<body>\n<header>\n<img src=images/logo.jpg>\n<h1>ESP8266 BASED WEBSERVER</h1>\n</header>\n<nav>\n<ul>\n<li><a class=active href=index.html>Digital Outputs</a></li>\n<li><a href=dinputs.html>Digital inputs</a></li>\n<li><a href=anoutputs.html>Analog Outputs</a></li>\n<li><a href=aninputs.html>Analog Inputs</a></li>\n</ul>\n</nav>\n<section>\n<table>\n<tr>\n<th>Digital Ouput</th>\n<th>Status</th>\n<th>Option</th>\n</tr>\n<tr>\n<td>DOut1</td>\n<td id=dout1>waiting..</td>\n<td><button class=button onclick=\"digital_output_toggle('dout1')\">Toggle</button>\n</td>\n</tr>\n<tr>\n<td>DOut2</td>\n<td id=dout2>waiting..</td>\n<td><button class=button onclick=\"digital_output_toggle('dout2')\">Toggle</button>\n</tr>\n<tr>\n<td>DOut3</td>\n<td id=dout3>waiting..</td>\n<td><button class=button onclick=\"digital_output_toggle('dout3')\">Toggle</button>\n</tr>\n<tr>\n<td>DOut4</td>\n<td id=dout4>waiting..</td>\n<td><button class=button onclick=\"digital_output_toggle('dout4')\">Toggle</button>\n</tr>\n</table>\n</section>\n</body>\n</html>";
+
+const char digitalInputs_html[]="HTTP/1.1 200 OK\n"
+ "Content-type: text/html\r\n\r\n"
+ "<!DOCTYPE html>\n<html>\n<head>\n<title>esp</title>\n<link rel=stylesheet type=text/css href=css/style.css>\n<script src=https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js></script>\n<script>$(document).ready(function(){setInterval(\"get_digital_input_status()\",2000)});function get_digital_input_status(){var a=\"/digital_inputs\";$.ajax({url:a,dataType:\"json\",success:function(b){if(b.digital_inputs.din1==1){$(\"#din1\").html(\"HIGH\")}else{$(\"#din1\").html(\"LOW\")}if(b.digital_inputs.din2==1){$(\"#din2\").html(\"HIGH\")}else{$(\"#din2\").html(\"LOW\")}if(b.digital_inputs.din3==1){$(\"#din3\").html(\"HIGH\")}else{$(\"#din3\").html(\"LOW\")}if(b.digital_inputs.din4==1){$(\"#din4\").html(\"HIGH\")}else{$(\"#din4\").html(\"LOW\")}},timeout:2000})};</script>\n</head>\n<body>\n<header>\n<img src=images/logo.jpg>\n<h1>ESP8266 BASED WEBSERVER</h1>\n</header>\n<nav>\n<ul>\n<li><a href=index.html>Digital Outputs</a></li>\n<li><a class=active href=dinputs.html>Digital inputs</a></li>\n<li><a href=anoutputs.html>Analog Outputs</a></li>\n<li><a href=aninputs.html>Analog Inputs</a></li>\n</ul>\n</nav>\n<section>\n<table id=inputsTable>\n<tr>\n<th>Digital Input</th>\n<th>Status</th>\n</tr>\n<tr>\n<td>DIn1</td>\n<td id=din1>waiting..</td>\n</td>\n</tr>\n<tr>\n<td>DIn2</td>\n<td id=din2>waiting..</td>\n</tr>\n<tr>\n<td>DIn3</td>\n<td id=din3>waiting..</td>\n</tr>\n<tr>\n<td>DIn4</td>\n<td id=din4>waiting..</td>\n</tr>\n</table>\n</section>\n</body>\n</html>";
+
+const char analog_outputs_html[]="HTTP/1.1 200 OK\n"
+ "Content-type: text/html\r\n\r\n"
+ "<!DOCTYPE html>\n<html>\n<head>\n<title>esp</title>\n<link rel=stylesheet type=text/css href=css/style.css>\n<script src=https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js></script>\n<script type=text/javascript src=https://www.gstatic.com/charts/loader.js></script>\n<script>$(document).ready(function(){setInterval(\"getAnalogOutputStatus()\",2000);displayVoltageLevel()});var voltage_level=0;function getAnalogOutputStatus(){var a=\"/analog_outputs\";$.ajax({url:a,dataType:\"text\",success:function(b){voltage_level=parseFloat(b)},timeout:2000})}function setNewVoltageLevel(a){var b=\"/analog_outputs/update?value=\"+a;$.ajax({url:b,dataType:\"text\",success:function(c){voltage_level=parseFloat(c)},timeout:2000})}function displayVoltageLevel(){google.charts.load(\"current\",{packages:[\"gauge\"]});google.charts.setOnLoadCallback(a);function a(){var d=google.visualization.arrayToDataTable([[\"Label\",\"Value\"],[\"Volts\",0],]);var b={width:300,height:250,redFrom:8,redTo:12,yellowFrom:4,yellowTo:8,greenFrom:0,greenTo:4,min:0,max:12,minorTicks:5};var c=new google.visualization.Gauge(document.getElementById(\"chart_div\"));c.draw(d,b);setInterval(function(){d.setValue(0,1,voltage_level);c.draw(d,b)},500)}};</script>\n</head>\n<body>\n<header>\n<img src=images/logo.jpg>\n<h1>ESP8266 BASED WEBSERVER</h1>\n</header>\n<nav>\n<ul>\n<li><a href=index.html>Digital Outputs</a>\n</li>\n<li><a href=dinputs.html>Digital inputs</a>\n</li>\n<li><a class=active href=anoutputs.html>Analog Outputs</a>\n</li>\n<li><a href=aninputs.html>Analog Inputs</a>\n</li>\n</ul>\n</nav>\n<section>\n<h3>Enter new voltage value and press Update btton</h3>\n<input type=text id=volts maxlength=5 placeholder=Voltage..(0.00-12.00)>\n<button class=button onclick=\"setNewVoltageLevel(document.getElementById('volts').value)\">Update</button>\n<div id=chart_div style=width:300px;height:250px></div>\n<h1 style=color:blue;margin-left:50px>Voltage Level</h1>\n</section>\n</body>\n</html>";
+
+const char analog_inputs_html[]="HTTP/1.1 200 OK\n"
+ "Content-type: text/html\r\n\r\n"
+ "<!DOCTYPE html>\n<html>\n<head>\n<title>esp</title>\n<link rel=stylesheet type=text/css href=css/style.css>\n<script src=https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js></script>\n<script>$(document).ready(function(){setInterval(\"getTemperature()\",2000)});function getTemperature(){var a=\"/analog_inputs\";$.ajax({url:a,dataType:\"text\",success:function(b){$(\"#temp\").html(b+\"℃\")},timeout:2000})};</script>\n</head>\n<body>\n<header>\n<img src=images/logo.jpg>\n<h1>ESP8266 BASED WEBSERVER</h1>\n</header>\n<nav>\n<ul>\n<li><a href=index.html>Digital Outputs</a>\n</li>\n<li><a href=dinputs.html>Digital inputs</a>\n</li>\n<li><a href=anoutputs.html>Analog Outputs</a>\n</li>\n<li><a class=active href=aninputs.html>Analog Inputs</a>\n</li>\n</ul>\n</nav>\n<section>\n<h1 id=temp style=border-style:solid;border-width:6px;border-color:red;border-radius:20px;background-color:#aeb5b7;width:100px;margin-top:20px;margin-left:40px;padding:20px>Waiting..</h1>\n<h2 style=margin-left:25px;color:blue>Temperature Value</h2>\n<br><br><h2>Temperature history</h2>\n<iframe width=450 height=260 style=\"border:1px solid #ccc\" src=\"https://thingspeak.com/channels/243141/charts/1?bgcolor=%23ffffff&color=%23d62020&dynamic=true&results=100&type=line\"></iframe>\n</section>\n</body>\n</html>";
+
+const char style_css[]="HTTP/1.1 200 OK\n"
+ "Content-type: text/css\r\n\r\n"
+ "*{padding:0;margin:0}header{background-color:#27ace5}body{font-family:calibri}header h1{text-align:center;font-size:4em;color:#fff;padding:10px}header img{width:110px;margin-top:10px;float:left}ul{list-style-type:none;margin:0;padding:0;overflow:hidden;background-color:#333}li{float:left}li a{display:block;color:#fff;text-align:center;padding:14px 16px;text-decoration:none}li a:hover:not(.active){background-color:#111}.active{background-color:#4CAF50}table{border-collapse:collapse;width:100%}table#inputsTable{border-collapse:collapse;width:70%}th,td{text-align:left;padding:8px}tr:nth-child(even){background-color:#f2f2f2}th{background-color:#4CAF50;color:#fff}section{width:60%;margin:10px}.button{display:inline-block;padding:10px 15px;font-size:15px;cursor:pointer;text-align:center;text-decoration:none;outline:none;color:#fff;background-color:#4CAF50;border:none;border-radius:15px;box-shadow:0 9px #999}.button:hover{background-color:#3e8e41}.button:active{background-color:#3e8e41;box-shadow:0 5px #666;transform:translateY(4px)}input[type=text],select{width:25%;padding:12px 20px;margin:8px 0;display:inline-block;border:1px solid #ccc;border-radius:4px;box-sizing:border-box}";
+
+const char not_found_text[]="HTTP/1.1 404 Not Found\n"
+ "Content-type: text/plain\r\n\r\n"
+ "page not found";
+
+//HTTP/1.1 200 OK
+//Content-type:image/jpeg
+const char logo_jpg[]={0x48, 0x54, 0x54, 0x50, 0x2F, 0x31, 0x2E, 0x31, 0x20, 0x32, 0x30, 0x30, 0x20, 0x4F, 0x4B, 0x0A, 0x43, 0x6F, 0x6E, 0x74, 0x65, 0x6E, 0x74, 0x2D, 0x74, 0x79, 0x70, 0x65, 0x3A, 0x69, 0x6D, 0x61, 0x67, 0x65, 0x2F, 0x6A, 0x70, 0x65, 0x67, 0x0D,0x0A,0x0D, 0x0A,
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0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA6, 0x34, 0x98, 0xE1, 0x68, 0x01, 0xCC, 0xC1, 0x7A, 0xD4, 0x4E, 0xE4, 0x9C, 0x74, 0xF6, 0xA6, 0xEE, 0x39, 0xCE, 0x79, 0xA4, 0xCD, 0x30, 0x14, 0x1E, 0xC7, 0x9A, 0x56, 0xE7, 0xBE, 0x4F, 0xE9, 0x4D, 0xA5, 0x07, 0xB8, 0xE2, 0x80, 0x14, 0x1C, 0x0C, 0x1E, 0x56, 0x8E, 0x50, 0xE4, 0x72, 0x29, 0xD1, 0xE1, 0xB8, 0x27, 0xF0, 0xA5, 0x60, 0x17, 0xFD, 0xD3, 0xD4, 0x7F, 0x51, 0x48, 0x04, 0x1F, 0x32, 0xE7, 0x1C, 0x7A, 0x0F, 0xEB, 0x48, 0x48, 0x1F, 0x7B, 0xFE, 0xF9, 0x1F, 0xD6, 0x99, 0x9C, 0x1E, 0x0D, 0x25, 0x3B, 0x01, 0x22, 0xB6, 0x79, 0x1C, 0x37, 0xF3, 0xA9, 0x55, 0xB7, 0x7D, 0x7D, 0x2A, 0xBD, 0x3D, 0x4B, 0x31, 0x18, 0xEB, 0x45, 0x84, 0x4D, 0x45, 0x14, 0x52, 0x18, 0x51, 0x45, 0x14, 0x00, 0x51, 0x45, 0x14, 0x00, 0x52, 0x33, 0x05, 0x1C, 0xD2, 0xD4, 0x0E, 0x08, 0x6E, 0x68, 0x01, 0x59, 0xCB, 0x7B, 0x0A, 0x6E, 0x3A, 0x67, 0xBD, 0x07, 0x00, 0x0E, 0x0D, 0x04, 0x82, 0x29, 0x88, 0x52, 0xA0, 0x00, 0x73, 0xD7, 0xF4, 0xA6, 0xD3, 0xB2, 0x06, 0x7B, 0xFB, 0xD3, 0x4F, 0xB7, 0x4A, 0x06, 0x25, 0x2E, 0x38, 0xE7, 0x8A, 0x00, 0xFC, 0xFD, 0x69, 0x3A, 0xD2, 0x01, 0xCA, 0x07, 0x5C, 0xF4, 0xA5, 0x2D, 0xEA, 0x39, 0xF7, 0xA6, 0xD3, 0xBE, 0xF7, 0xD7, 0xDC, 0xD0, 0x03, 0x48, 0xA4, 0xA7, 0x63, 0x9C, 0x54, 0x89, 0x1E, 0x39, 0x34, 0xC4, 0x35, 0x10, 0xB7, 0xD2, 0xA5, 0x00, 0x01, 0xC5, 0x2D, 0x14, 0x86, 0x14, 0x51, 0x45, 0x00, 0x14, 0x51, 0x45, 0x00, 0x14, 0x51, 0x45, 0x00, 0x14, 0xD9, 0x00, 0x2A, 0x73, 0x4E, 0xA0, 0xF3, 0x40, 0x10, 0x12, 0x4E, 0x01, 0x3C, 0x1A, 0x1B, 0xEF, 0x64, 0x0F, 0xC2, 0x95, 0xD7, 0x61, 0xF5, 0x06, 0x9A, 0x38, 0x39, 0xCF, 0xD2, 0x80, 0x0C, 0xE4, 0xF2, 0x3A, 0x76, 0xA4, 0xEE, 0x45, 0x28, 0x04, 0xE4, 0x8E, 0xD4, 0x29, 0x18, 0x20, 0xF7, 0xA6, 0x21, 0x41, 0x04, 0x6D, 0x38, 0x03, 0xBF, 0xBD, 0x23, 0x03, 0xD7, 0x9C, 0x9E, 0x07, 0xD2, 0x92, 0x9E, 0x1B, 0x23, 0xA6, 0x5B, 0xDE, 0x80, 0x23, 0x3C, 0x53, 0x91, 0x0B, 0x1F, 0x6A, 0x91, 0x62, 0xEE, 0xD5, 0x27, 0x4A, 0x43, 0x11, 0x54, 0x2F, 0x4A, 0x5A, 0x28, 0xA0, 0x02, 0x8A, 0x28, 0xA0, 0x02, 0x8A, 0x28, 0xA0, 0x02, 0x8A, 0x28, 0xA0, 0x02, 0x8A, 0x28, 0xA0, 0x02, 0x8A, 0x28, 0xA0, 0x04, 0x23, 0x27, 0xDA, 0xA1, 0x61, 0xB7, 0x38, 0x1F, 0x2D, 0x4F, 0x48, 0x47, 0x06, 0x80, 0x21, 0x04, 0xA8, 0xE3, 0xA5, 0x36, 0x9E, 0x54, 0x83, 0xC0, 0xC8, 0x34, 0xA2, 0x3C, 0x1E, 0x69, 0xDC, 0x06, 0xAA, 0x16, 0xA9, 0x95, 0x42, 0xD2, 0x81, 0x8A, 0x29, 0x00, 0x51, 0x45, 0x14, 0x00, 0x51, 0x45, 0x14, 0x00, 0x51, 0x45, 0x14, 0x00, 0x51, 0x45, 0x14, 0x00, 0x51, 0x45, 0x14, 0x00, 0x51, 0x45, 0x14, 0x00, 0x51, 0x45, 0x14, 0x00, 0x51, 0x45, 0x14, 0x00, 0x84, 0x70, 0x29, 0x68, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x0A, 0x28, 0xA2, 0x80, 0x3F, 0xFF, 0xD9};
+
+// HTTP/1.1 200 OK
+//Content-type:image/x-icon
+const char favicon_ico[]={0x48, 0x54, 0x54, 0x50, 0x2F, 0x31, 0x2E, 0x31, 0x20, 0x32, 0x30, 0x30, 0x20, 0x4F, 0x4B, 0x0A, 0x43, 0x6F, 0x6E, 0x74, 0x65, 0x6E, 0x74, 0x2D, 0x74, 0x79, 0x70, 0x65, 0x3A, 0x20, 0x69, 0x6D, 0x61, 0x67, 0x65, 0x2F, 0x78, 0x2D, 0x69, 0x63, 0x6F, 0x6E,0x0D, 0x0A,0x0D, 0x0A,
+ 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x10, 0x10, 0x00, 0x00, 0x01, 0x00, 0x18, 0x00, 0x68, 0x03, 0x00, 0x00, 0x16, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x01, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xED, 0xED, 0xED, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF6, 0xF6, 0xF6, 0xAD, 0xB4, 0xB3, 0xD9, 0xE0, 0xDF, 0xFA, 0xFA, 0xFA, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF5, 0xF5, 0xF5, 0xC8, 0xC8, 0xC8, 0x82, 0x5E, 0x64, 0x79, 0x56, 0x5C, 0xDF, 0xDF, 0xDF, 0xF7, 0xF7, 0xF7, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF7, 0xF7, 0xF7, 0xE4, 0xE4, 0xE4, 0x6F, 0x6F, 0x6F, 0xA6, 0x66, 0x66, 0x7C, 0x3A, 0x37, 0x64, 0x5B, 0x4F, 0xE1, 0xDC, 0xD5, 0xF8, 0xF8, 0xF8, 0xF6, 0xF6, 0xF6, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF9, 0xF9, 0xF9, 0x9B, 0x9B, 0x9B, 0x5B, 0x5B, 0x5B, 0x74, 0x5A, 0x3A, 0x7F, 0x62, 0x3E, 0x7A, 0x5F, 0x3A, 0x8B, 0x7D, 0x6A, 0xBC, 0xBC, 0xBC, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF6, 0xF6, 0xF6, 0x87, 0x86, 0x84, 0x67, 0x64, 0x61, 0x79, 0x5E, 0x41, 0x69, 0x4B, 0x2A, 0x97, 0x7F, 0x5E, 0x50, 0x41, 0x34, 0x2F, 0x2F, 0x2F, 0xBE, 0xBC, 0xBA, 0xF9, 0xF8, 0xF5, 0xF8, 0xF8, 0xF7, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xC6, 0xC6, 0xC6, 0x6C, 0x5B, 0x46, 0x7C, 0x60, 0x3D, 0x8C, 0x62, 0x64, 0x5E, 0x3A, 0x3F, 0x42, 0x42, 0x41, 0x39, 0x39, 0x39, 0x5B, 0x5B, 0x5B, 0x77, 0x61, 0x46, 0xC0, 0xAC, 0x8B, 0xF8, 0xF8, 0xF7, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF4, 0xF4, 0xF4, 0xA3, 0x93, 0x7E, 0x7C, 0x5F, 0x3A, 0x95, 0x6D, 0x6F, 0x5F, 0x3B, 0x41, 0x35, 0x35, 0x35, 0x47, 0x47, 0x47, 0x71, 0x71, 0x71, 0x69, 0x53, 0x37, 0x57, 0x3C, 0x19, 0xA0, 0xA0, 0x9F, 0xF3, 0xF3, 0xF3, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF6, 0xF2, 0xAD, 0xA7, 0x9F, 0x66, 0x3E, 0x44, 0x61, 0x37, 0x3E, 0x5D, 0x3A, 0x3F, 0x60, 0x4D, 0x50, 0xB8, 0xB8, 0xB8, 0x81, 0x42, 0x46, 0x7A, 0x26, 0x2A, 0x89, 0x46, 0x31, 0xD7, 0xB1, 0xA2, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF6, 0xF6, 0xF6, 0xD2, 0xB6, 0xBD, 0x7A, 0x4E, 0x55, 0x7C, 0x50, 0x57, 0x7F, 0x67, 0x6B, 0x7B, 0x7B, 0x7B, 0x82, 0x6C, 0x6F, 0x7B, 0x5D, 0x5F, 0x85, 0x75, 0x4F, 0xE6, 0xDC, 0xC5, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xFC, 0xF6, 0xF9, 0xD2, 0xC1, 0xC4, 0x8C, 0x77, 0x7A, 0x83, 0x78, 0x7A, 0x68, 0x68, 0x68, 0x94, 0x9A, 0x99, 0x8A, 0x92, 0x90, 0xBB, 0xC8, 0xB4, 0xF2, 0xF9, 0xEE, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF7, 0xF7, 0xF7, 0xCC, 0xCC, 0xCC, 0x70, 0x70, 0x70, 0x9C, 0x9C, 0x9C, 0x9A, 0x9A, 0x9A, 0xAA, 0xAA, 0xAA, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xDC, 0xDC, 0xDC, 0x79, 0x79, 0x79, 0xA8, 0xA8, 0xA8, 0xEE, 0xEE, 0xEE, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xEA, 0xEA, 0xEA, 0xEB, 0xEB, 0xEB, 0xF7, 0xF7, 0xF7, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+
+char rxBuff[BUFFER_SIZE];//array to store data received from esp
+char reqLineBuff[REQ_LINE_BUFF_SIZE];
+unsigned char reqLinBuffIndex=0;
+unsigned int bufferWritingIndex=0;//write pointer
+unsigned int bufferReadingIndex_IpdSearch=0;//read pointer
+unsigned int bufferReadingIndex_espRespSearch=0;//read pointer
+char serverIp[16];
+
+/********Serial ports to be used**************/
+Serial debug(PB_6,PB_7);//TO BE used for debug info
+Serial esp(PC_6,PC_7);//TX,RX TO BE CONNECTED TO ESP
+Serial esp2(PC_6,PC_7);//TX,RX TO BE CONNECTED TO ESP
+
+/*******Connections to relay*******************/
+//relay works at logic LOW
+DigitalOut digital_out_1(PD_0,1);// High on initialization
+DigitalOut digital_out_2(PD_1,1);// High on initialization
+DigitalOut digital_out_3(PD_2,1);// High on initialization
+DigitalOut digital_out_4(PD_3,1);// High on initialization
+
+/********digital inputs, connected to push buttons***********/
+DigitalIn digital_in_1(PD_8);
+DigitalIn digital_in_2(PD_9);
+DigitalIn digital_in_3(PC_10);
+DigitalIn digital_in_4(PC_11);
+
+/**********Analog output*******************/
+PwmOut analog_out_1(PB_8);
+
+/**********Analog Input*************/
+AnalogIn tempSensor(PB_1);
+
+Timer t;
+
+void espRxInterrupt();
+char readEspResponse();
+void handleHttpRequests();
+void processReqLine(char *stringToProcess);
+void sendMemArrayToEsp(const char*str,unsigned int len);
+void sendRequestedPageToClient(char id, const char* page,unsigned int len);
+void extractQueryFieldValue(char* someUrl,char* field, char* value);
+char toggleOutput(char* pinName);
+void sendDataToThingSpeak(char* dataToSend);
+
+int main(){
+ //configure Pull down on all digital inputs
+ digital_in_1.mode(PullDown);
+ digital_in_2.mode(PullDown);
+ digital_in_3.mode(PullDown);
+ digital_in_4.mode(PullDown);
+
+ //configure baud rate for UART
+ esp.baud(230400);
+ debug.baud(460800);
+ esp2.attach(&espRxInterrupt,Serial::RxIrq);
+
+ debug.printf("Sysem powerd up!\n");
+
+ esp.printf("AT+RST\r\n");
+ while(readEspResponse()!=READY);
+ debug.printf("Reset success\n");
+
+ esp.printf("ATE0\r\n");//disable ECHO
+ while(readEspResponse()!=OK);
+
+ esp.printf("AT+CWMODE=1\r\n");//enable station mode
+ while(readEspResponse()!=OK);
+
+ esp.printf("AT+CIPMUX=1\r\n");// enable multiple connections
+ while(readEspResponse()!=OK);
+
+ esp.printf("AT+CIPSERVER=1,80\r\n");//start server at port 80
+ while(readEspResponse()!=OK);
+
+ esp.printf("AT+CIPSTO=5\r\n");//Server timeout=5 seconds
+ while(readEspResponse()!=OK);
+
+
+
+ debug.printf("Connecting to WiFi..");
+ esp.printf("AT+CWJAP_CUR=\"smart\",\"myPassword$$\"\r\n");
+ char responseFromEsp;
+ while(1)
+ {
+ responseFromEsp=readEspResponse();
+ wait_ms(100);
+ debug.putc('.');
+ if(responseFromEsp==OK || responseFromEsp==FAIL)
+ break;
+ }
+ debug.putc('\n');
+ if(responseFromEsp==OK)
+ {
+ debug.printf("Connected to Wifi\n");
+ __disable_irq();
+ esp.printf("AT+CIFSR\r\n");//check obtained IP
+ esp.scanf("+CIFSR:STAIP,\"%[^\"]",&serverIp);//+CIFSR:STAIP,"192.168.8.109"
+ __enable_irq();
+ while(readEspResponse()!=OK);
+ }
+
+
+
+ char someArray[150];
+ sprintf(someArray,"GET /update?api_key=ZAFRRYPMMEMXST4P&field2=%s\r\n\r\n",serverIp);
+ sendDataToThingSpeak(someArray);
+ debug.printf("Server IP is %s\n",serverIp);
+
+ t.start();//start timer
+ while(1){
+ handleHttpRequests();
+ if(t.read()>30)//if 30 seconds passed
+ {
+ t.reset();//reset timer
+ //now send temperature value to thingspeak
+ sprintf(someArray,"GET /update?api_key=ZAFRRYPMMEMXST4P&field1=%.2f\r\n\r\n",((tempSensor*3.3)-0.500)*100.0);
+ sendDataToThingSpeak(someArray);
+ debug.printf("temperature sent to thingspeak\n");
+ }
+
+ }
+}
+
+void espRxInterrupt(){
+ if(esp2.readable())
+ {
+ rxBuff[bufferWritingIndex++]=esp2.getc();
+ if(bufferWritingIndex>=BUFFER_SIZE)
+ bufferWritingIndex=0;
+ }
+
+}
+
+char readEspResponse(){
+ char rxByte;
+ char espResponse=UNKNOWN;
+ static char state=0;
+
+ while(bufferReadingIndex_espRespSearch!=bufferWritingIndex)
+ {
+ rxByte=rxBuff[bufferReadingIndex_espRespSearch++];
+ //debug.putc(rxByte);
+ if(bufferReadingIndex_espRespSearch>=BUFFER_SIZE)
+ bufferReadingIndex_espRespSearch=0;
+
+ switch(state)
+ {
+ case 0:
+ if(rxByte=='O')//it may be OK response
+ state=1;
+ else if(rxByte=='E')//it may be ERROR response
+ state=4;
+ else if(rxByte=='F')//it may be FAIL response
+ state=10;
+ else if(rxByte=='r')//it may be 'ready' response
+ state=15;
+ else if(rxByte=='>')//it may be Ready To Write TCP '>' response
+ state=21;
+ break;
+
+ case 1:
+ if(rxByte=='K')
+ state=2;
+ else state=0;
+ break;
+
+ case 2:
+ if(rxByte==0x0d)
+ state=3;
+ else state=0;
+ break;
+
+ case 3:
+ if(rxByte==0x0A)
+ espResponse=OK;
+ state=0;
+ break;
+
+ case 4://ERROR
+ if(rxByte=='R')
+ state=5;
+ else state=0;
+ break;
+
+ case 5:
+ if(rxByte=='R')
+ state=6;
+ else state=0;
+ break;
+
+ case 6:
+ if(rxByte=='O')
+ state=7;
+ else state=0;
+ break;
+
+
+ case 7:
+ if(rxByte=='R')
+ state=8;
+ else state=0;
+ break;
+
+ case 8:
+ if(rxByte==0x0d)
+ state=9;
+ else state=0;
+ break;
+
+ case 9:
+ if(rxByte==0x0A)
+ espResponse=ERROR;
+ state=0;
+ break;
+
+
+ case 10://fail
+ if(rxByte=='A')
+ state=11;
+ else state=0;
+ break;
+
+
+ case 11:
+ if(rxByte=='I')
+ state=12;
+ else state=0;
+ break;
+
+
+ case 12:
+ if(rxByte=='L')
+ state=13;
+ else state=0;
+
+ break;
+
+ case 13:
+ if(rxByte==0x0d)
+ state=14;
+ else state=0;
+ break;
+
+ case 14:
+ if(rxByte==0x0A)
+ espResponse=FAIL;
+ state=0;
+ break;
+
+
+ case 15://READY
+ if(rxByte=='e')
+ state=16;
+ else state=0;
+ break;
+
+
+ case 16:
+ if(rxByte=='a')
+ state=17;
+ else state=0;
+ break;
+
+ case 17:
+ if(rxByte=='d')
+ state=18;
+ else state=0;
+ break;
+
+ case 18:
+ if(rxByte=='y')
+ state=19;
+ else state=0;
+ break;
+
+ case 19:
+ if(rxByte==0x0d)
+ state=20;
+ else state=0;
+ break;
+
+ case 20:
+ if(rxByte==0x0A)
+ espResponse=READY;
+ state=0;
+ break;
+
+ case 21:
+ if(rxByte==0x20)
+ espResponse=READY_TO_WRITE_TCP;
+ state=0;
+
+ default:
+ state=0;
+ break;
+ }
+ }
+ return espResponse;
+}
+
+
+
+void handleHttpRequests(){
+ char rxByte;
+ static char state=0;
+
+ while(bufferReadingIndex_IpdSearch!=bufferWritingIndex)
+ {
+ rxByte=rxBuff[bufferReadingIndex_IpdSearch++];
+ //debug.putc(rxByte);
+ if(bufferReadingIndex_IpdSearch>=BUFFER_SIZE)
+ bufferReadingIndex_IpdSearch=0;
+ switch(state)
+ {
+ case 0:
+ if(rxByte=='+')
+ state=1;
+ break;
+
+ case 1:
+ if(rxByte=='I')
+ state=2;
+ else state=0;
+ break;
+
+ case 2:
+ if(rxByte=='P')
+ state=3;
+ else state=0;
+ break;
+
+ case 3:
+ if(rxByte=='D')
+ state=4;
+ else state=0;
+ break;
+
+ case 4:
+ if(rxByte==',')
+ state=5;
+ else state=0;
+ break;
+
+ case 5:
+ if(rxByte!=0x0d)
+ {
+ reqLineBuff[reqLinBuffIndex++]=rxByte;
+ }
+ else
+ {
+ reqLineBuff[reqLinBuffIndex]=0x00;
+ bufferReadingIndex_espRespSearch=bufferReadingIndex_IpdSearch;
+ processReqLine(reqLineBuff);
+ state=0;
+ reqLinBuffIndex=0;
+ }
+ }
+ }
+}
+
+void processReqLine(char *stringToProcess)
+{
+//0,416:GET /?led=ON HTTP/1.1
+ char requestType[6];
+ char request[50];
+ char linkId;
+ int ipdLen;
+ sscanf(stringToProcess,"%c,%d:%s %s",&linkId,&ipdLen,requestType,request);
+ debug.printf("%s\n",request);
+ if(request!=NULL)
+ {
+ if(strcmp(request,"/")==0 || strcmp(request,get_index_html)==0)
+ {
+ //send index.html
+ sendRequestedPageToClient(linkId,index_html,sizeof(index_html)-1);
+ }
+ else if(strcmp(request,get_digital_inputs_html)==0)
+ {
+ sendRequestedPageToClient(linkId,digitalInputs_html,sizeof(digitalInputs_html)-1);
+ }
+ else if(strcmp(request,get_analog_inputs_html)==0)
+ {
+ sendRequestedPageToClient(linkId,analog_inputs_html,sizeof(analog_inputs_html)-1);
+
+ }
+ else if(strcmp(request,get_analog_outputs)==0)
+ {
+ sendRequestedPageToClient(linkId,analog_outputs_html,sizeof(analog_outputs_html)-1);
+ }
+
+ else if(strcmp(request,"/images/logo.jpg")==0)
+ {
+ sendRequestedPageToClient(linkId,logo_jpg,sizeof(logo_jpg));
+ }
+ else if(strcmp(request,"/favicon.ico")==0)
+ {
+ sendRequestedPageToClient(linkId,favicon_ico,sizeof(favicon_ico));
+ }
+ else if(strcmp(request,"/css/style.css")==0)
+ {
+ sendRequestedPageToClient(linkId,style_css,sizeof(style_css)-1);
+ }
+ else if(strncmp(request,get_Toggle_Output,strlen(get_Toggle_Output))==0)
+ {
+ //check query field and value, and toggle appropriate Output
+ char field[10],value[10];
+ extractQueryFieldValue(request,field,value);
+ if(value!=NULL)
+ {
+ char newPinState=toggleOutput(value);
+ char responsePacket[100];
+ sprintf(responsePacket,"%s%c",textPlainHeader,newPinState+48);
+ sendRequestedPageToClient(linkId,responsePacket,strlen(responsePacket));
+ }
+ }
+ else if(strcmp(request,get_digital_output_status)==0)
+ {
+ //"{\"digital_outputs\":{\"dout1\":1,\"dout2\":0,\"dout3\":1,\"dout4\":1}}"
+ char responsePacket[200];
+ sprintf(responsePacket,"%s{\"digital_outputs\":{\"dout1\":%c,\
+ \"dout2\":%c,\"dout3\":%c,\"dout4\":%c}}",jsonHeader,(!digital_out_1)+48,
+ (!digital_out_2)+48,(!digital_out_3)+48,(!digital_out_4)+48);
+ sendRequestedPageToClient(linkId,responsePacket,strlen(responsePacket));
+ }
+ else if(strcmp(request,get_digital_input_status)==0)
+ {
+ char responsePacket[200];
+ sprintf(responsePacket,"%s{\"digital_inputs\":{\"din1\":%c,\
+ \"din2\":%c,\"din3\":%c,\"din4\":%c}}",jsonHeader,(digital_in_1)+48,
+ (digital_in_2)+48,(digital_in_3)+48,(digital_in_4)+48);
+ sendRequestedPageToClient(linkId,responsePacket,strlen(responsePacket));
+
+ }
+ else if(strncmp(request,get_analog_output_update,strlen(get_analog_output_update))==0)
+ {
+ char field[10],value[10];
+ extractQueryFieldValue(request,field,value);
+ if(value!=NULL)
+ {
+ analog_out_1=atof(value)/12.0;
+ char responsePacket[100];
+ sprintf(responsePacket,"%s%.2f",textPlainHeader,analog_out_1.read()*12.0);
+ sendRequestedPageToClient(linkId,responsePacket,strlen(responsePacket));
+ }
+ }
+ else if(strcmp(request,get_analog_outputs_status)==0)
+ {
+ char responsePacket[100];
+ sprintf(responsePacket,"%s%.2f",textPlainHeader,analog_out_1.read()*12.0);
+ sendRequestedPageToClient(linkId,responsePacket,strlen(responsePacket));
+ }
+ else if(strcmp(request,get_analog_inputs_status)==0)
+ {
+ char responsePacket[100];
+ sprintf(responsePacket,"%s%.2f",textPlainHeader,((tempSensor*3.3)-0.500)*100.0);
+ sendRequestedPageToClient(linkId,responsePacket,strlen(responsePacket));
+ }
+ else
+ {
+ sendRequestedPageToClient(linkId,not_found_text,sizeof(not_found_text)-1);
+ //send page not found message
+ }
+ }
+}
+
+
+void sendRequestedPageToClient(char id, const char* page,unsigned int len)
+{
+ char atCommandArray[50];
+ unsigned int lenOfPacketToTx;
+ unsigned int pageToSendAddress=0;
+ char tempEspStatus;
+ while(len>0)
+ {
+ if(len>2048){
+ len-=2048;
+ lenOfPacketToTx=2048;
+ }
+ else{
+ lenOfPacketToTx=len;
+ len=0;
+ }
+
+ sprintf(atCommandArray,"AT+CIPSEND=%c,%d\r\n",id,lenOfPacketToTx);
+ bufferReadingIndex_espRespSearch=bufferWritingIndex;
+ esp.printf(atCommandArray);
+
+ while(1)
+ {
+ tempEspStatus=readEspResponse();
+ if(tempEspStatus==READY_TO_WRITE_TCP||tempEspStatus==ERROR ||tempEspStatus==FAIL)
+ break;
+ }
+ //now send page
+ if(tempEspStatus==READY_TO_WRITE_TCP)
+ {
+ sendMemArrayToEsp(page+pageToSendAddress,lenOfPacketToTx);
+ do{
+ tempEspStatus=readEspResponse();
+ }
+ while(tempEspStatus==UNKNOWN);
+ if(tempEspStatus!=OK)//link broken, don't send more data to this link.
+ break;
+
+ pageToSendAddress+=lenOfPacketToTx;
+ }
+ else
+ break;
+ }
+ if(tempEspStatus==OK)
+ {
+ sprintf(atCommandArray,"AT+CIPCLOSE=%c\r\n",id);
+ esp.printf(atCommandArray);
+ while(readEspResponse()==UNKNOWN);
+ }
+}
+
+void sendMemArrayToEsp(const char*str,unsigned int len)
+{
+ while(len--)
+ esp.putc(*str++);
+}
+
+void extractQueryFieldValue(char* someUrl,char* field, char* value)
+{
+ sscanf(someUrl,"%*[^?]%*c%[^=]%*c%s",field,value);
+}
+
+char toggleOutput(char* pinName)
+{
+ if(strcmp(pinName,"dout1")==0)
+ {
+ digital_out_1=!digital_out_1;
+ return !digital_out_1;
+ }
+ else if(strcmp(pinName,"dout2")==0)
+ {
+ digital_out_2=!digital_out_2;
+ return !digital_out_2;
+ }
+ else if(strcmp(pinName,"dout3")==0)
+ {
+ digital_out_3=!digital_out_3;
+ return !digital_out_3;
+ }
+ else if(strcmp(pinName,"dout4")==0)
+ {
+ digital_out_4=!digital_out_4;
+ return !digital_out_4;
+ }
+ else return 2;//error
+
+}
+
+
+
+void sendDataToThingSpeak(char* dataToSend)
+{
+ //first stop server
+ char responseFromEsp;
+ esp.printf("AT+CIPSERVER=0\r\n");
+ while(readEspResponse()!=OK);
+
+ esp.printf("AT+CIPSTART=4,\"TCP\",\"api.thingspeak.com\",80\r\n\r\n");
+ do{
+ responseFromEsp=readEspResponse();
+ }while(responseFromEsp==UNKNOWN);
+
+ if(responseFromEsp==OK)//connect success to thingspeak
+ {
+ sendRequestedPageToClient('4',dataToSend,strlen(dataToSend));
+ }
+
+ //Restart server
+ esp.printf("AT+CIPSERVER=1,80\r\n");//start server at port 80
+ while(readEspResponse()!=OK);
+}
\ No newline at end of file