Jonas Nimb
Webserver controller with url trimming for value controls
Dependencies: LCD_DISCO_F746NG BSP_DISCO_F746NG
Diff: main.cpp
- Revision:
- 10:f941e0750773
- Parent:
- 9:161bed13b17e
--- a/main.cpp Mon Jul 01 17:23:49 2019 +0000
+++ b/main.cpp Mon Aug 26 10:15:34 2019 +0000
@@ -1,13 +1,17 @@
#include "mbed.h"
#include "EthernetInterface.h"
#include "TCPSocket.h"
+#include "LCD_DISCO_F746NG.h"
#include <stdio.h>
-#include <string>
+#include <vector>
+#include <sstream>
+#include <iostream> // std::cout
+#include <string> // std::string
using namespace std;
-#define IP "192.168.1.181"
-#define GATEWAY "192.168.1.1"
+#define IP "192.168.137.200"
+#define GATEWAY "192.168.137.1"
#define NETMASK "255.255.255.0"
#define PORT 80
@@ -16,12 +20,24 @@
TCPSocket server;
TCPSocket* clientSocket;
SocketAddress clientAddress;
+LCD_DISCO_F746NG displayLCD;
+
+Thread tempUpdater; // Multithreaded temp updater
+Thread urlManager; // Thread for url management
+
char receiveBuf[1024];
-const int OFF = 0;
-const int ON = 1;
+const int OFF = 0; // Switch off
+const int ON = 1; // Switch on
DigitalOut sw(LED1); // A digital output to be switched on/off
-float roomTemp = 21.8; // A temperature sensor output
-const string PASSWORD = "secret"; // Change as you like
+PwmOut PwrLED(D3); // Simulation of motor control
+AnalogIn tempSensor(A0); // Temperature sensor
+float roomTemp = 0.0; // A temperature sensor output
+float units; // Final variable to contain temp value
+unsigned int a, beta = 3975; // Unsigned int's to use for temperature calculations
+float resistance; // LE PIECE OF RESISTAAAANCE
+float temperature; // Temperature variable to use for calculations
+int sliderVal // Value of the slider
+const string PASSWORD = "daddyshark"; // Change as you like
const string HTTP_OK = "HTTP/1.0 200 OK";
const string MOVED_PERM = "HTTP/1.0 301 Moved Permanently\r\nLocation: ";
const string UNAUTHORIZED = "HTTP/1.0 401 Unauthorized";
@@ -66,10 +82,8 @@
if (cmd == "?sw=1")
return(1);
-
return(-3);
}
-
/**
* @brief
* @note
@@ -108,6 +122,7 @@
"<meta name=\"viewport\" content=\" initial-scale=1.0; maximum-scale=1.0; minimum-scale=1.0; user-scalable=0;\"/>"
"<title>Smart Home</title>"
"<link href='http://fonts.googleapis.com/css?family=Droid+Sans&v1' rel='stylesheet' type='text/css'>"
+ "<script src=\"https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js\"></script>"
"<style>"
".switch {"
"position: relative;"
@@ -152,11 +167,24 @@
"transform: translateX(26px);"
"}"
"</style>"
+ "<script>"
+ "$(document).ready(function(){"
+ "setInterval(function() {"
+ "$(\"#readTemp\").load(\" #readTemp\");"
+ "}, 10000);"
+ "$(\"#click\").click(function(){"
+ "$(\"#readTemp\").load(\" #readTemp\");"
+ "});"
+ "});"
+ "</script>"
"</head>"
-
"<body>"
"<h2><a href=\".\" title=\"Click to refresh the page\">Smart Home</a></h2>"
+ "<button id=\"click\">Click on this.</button>"
+ "<div id=\"readTemp\">"
"<pre>Temperature:\t" + string(roomTempStr) + "°C</pre>"
+ "<pre>Temperature:\t" + string(roomTempStr) + "°C</pre>"
+ "</div>"
"<pre>Heating:\t";
if(status == ON) {
@@ -172,10 +200,6 @@
httpContent +=
"<div class=\"slider\"></div>"
- "</a>"
- "</pre>"
- "<hr>"
- "<pre>2017 ARMmbed</pre>"
"</body>";
return httpContent;
@@ -208,6 +232,71 @@
/*$on*/
}
+void clearLineLCD(int line) {
+ displayLCD.DisplayStringAt(0, LINE(line),(uint8_t *)(" "), CENTER_MODE);
+}
+
+int findURL(string mainString,string stringToFind) {
+ int foundAt;
+ int number;
+
+ //printf("String to search in: %s\r\n", mainString);
+ //printf("String to search for: %s\r\n", stringToFind);
+
+ std::size_t found = mainString.find(stringToFind);
+ if (found != string::npos) {
+ foundAt = found;
+ //printf("Found at %i\r\n", foundAt);
+ string getString = mainString.substr(foundAt, 7);
+ string trimString = getString.substr(stringToFind.length(), 3);
+ std::istringstream iss (trimString);
+ iss >> number;
+
+ //printf("%s found: %s\r\n", stringToFind, getString);
+
+ //printf("Converting: %s\r\n", trimString);
+
+ //printf("Final Number = %i\r\n", number);
+ }
+ else {
+ number = -1;
+ }
+ return number;
+}
+
+void tempReader() {
+ while (true) {
+ a = tempSensor.read_u16(); /* Read analog value */
+
+ // Calculate the resistance of the thermistor from analog voltage read.
+ resistance= (float) 10000.0 * ((65536.0 / a) - 1.0);
+
+ // Convert the resistance to temperature using Steinhart's Hart equation
+ temperature=(1/((log(resistance/10000.0)/beta) + (1.0/298.15)))-273.15;
+
+ units = (float) temperature;
+
+ roomTemp = units;
+
+ if (sw == ON) {
+ if (roomTemp >= 30) {
+ PwrLED = 0.80;
+ }
+ else {
+ PwrLED = 0.20;
+ }
+ }
+ if (sw == OFF) {
+ PwrLED = 0;
+ }
+ char tempStr[20];
+ sprintf(tempStr, "Temperature is: %3.1f C", roomTemp);
+
+ displayLCD.DisplayStringAt(0, LINE(6),(uint8_t *)(tempStr), CENTER_MODE);
+ Thread::wait(1000);
+ }
+}
+
/**
* @brief
* @note
@@ -216,6 +305,10 @@
*/
int main(void)
{
+ displayLCD.Clear(LCD_COLOR_BLACK);
+ displayLCD.SetBackColor(LCD_COLOR_BLACK);
+ displayLCD.SetTextColor(LCD_COLOR_WHITE);
+
pc.printf("Starting.. \r\n\r\n");
net = new EthernetInterface();
@@ -225,7 +318,7 @@
return 0;
}
- //net->set_network (IP, NETMASK, GATEWAY); // include this for using static IP address
+ net->set_network (IP, NETMASK, GATEWAY); // include this for using static IP address
nsapi_size_or_error_t r = net->connect();
if (r != 0) {
@@ -238,10 +331,14 @@
const char* netmask = net->get_netmask();
const char* gateway = net->get_gateway();
+ displayLCD.DisplayStringAt(0, LINE(2),(uint8_t *)("IP Address"), CENTER_MODE);
+ displayLCD.DisplayStringAt(0, LINE(4),(uint8_t *)( ip ? ip : "None"), CENTER_MODE);
pc.printf("IP address: %s\r\n", ip ? ip : "None");
pc.printf("Netmask: %s\r\n", netmask ? netmask : "None");
pc.printf("Gateway: %s\r\n\r\n", gateway ? gateway : "None");
pc.printf("Usage: Type %s/%s/ into your web browser and hit ENTER\r\n\r\n", ip, PASSWORD.c_str());
+
+ tempUpdater.start(tempReader); // Starting the multithreaded workload so it won't affect main program
/* Open the server on ethernet stack */
server.open(net);
@@ -290,6 +387,15 @@
int cmd = analyseURL(received);
+ int testFind = findURL(received, "val=");
+
+ if (testFind == -1) {
+ printf("--------------Couldn't find 'val='\r\n");
+ }
+ if (testFind >= 0) {
+ printf("--------------Found 'val=': %i\r\n", testFind);
+ }
+
switch (cmd) {
case -3:
// update webpage
@@ -311,17 +417,21 @@
case 0:
sw = OFF; // turn the switch off
+ PwrLED = 0; // turn the "motor" led off
+ clearLineLCD(8);
+ displayLCD.DisplayStringAt(0, LINE(8),(uint8_t *)("Heating OFF"), CENTER_MODE);
httpHeader = HTTP_OK;
sendHTTP(*clientSocket, httpHeader, showWebPage(sw));
break;
case 1:
sw = ON; // turn the switch on
+ clearLineLCD(8);
+ displayLCD.DisplayStringAt(0, LINE(8),(uint8_t *)("Heating ON"), CENTER_MODE);
httpHeader = HTTP_OK;
sendHTTP(*clientSocket, httpHeader, showWebPage(sw));
break;
}
-
clientSocket->close();
}
}