Jack Hansdampf
/
WebSwitch_ENC28J60_GSOE
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Dependencies: UIPEthernet_GSOE
main.cpp
- Committer:
- hudakz
- Date:
- 2019-08-27
- Revision:
- 10:b47c7921346f
- Parent:
- 5:0ab8292e37da
- Child:
- 11:6c0b20227ca2
File content as of revision 10:b47c7921346f:
#include "mbed.h"
#include <string>
#include "UipEthernet.h"
#include "TcpServer.h"
#include "TcpClient.h"
using namespace std;
// To be used when static IP is needed
#define IP "192.168.1.35"
#define GATEWAY "192.168.1.1"
#define NETMASK "255.255.255.0"
#define PORT 80
// The ENC28J60 chip doesn't have a built-in MAC address.
// It's up to us to provide one which is unique within the connected network.
// So modify the one below accordingly.
const uint8_t MAC[6] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05 };
UipEthernet net(MAC, D11, D12, D13, D10); // mosi, miso, sck, cs
TcpServer server; // TCP server running on this mbed device
TcpClient* client; // TCP client communicating with a HTTP Browser running on a PC or Mobile device
const int OFF = 0;
const int ON = 1;
DigitalOut output(D3); // A digital output to be switched on/off
float roomTemp = 21.8; // A dummy temperature sensor output
const string PASSWORD = "secret"; // Change as you like
string httpHeader; // HTTP header
string httpContent; // HTTP content
/**
* @brief Analyses the received URL
* @note The string passed to this function will look like this:
* GET /HTTP/1.....
* GET /password HTTP/1.....
* GET /password/ HTTP/1.....
* GET /password/?sw=1 HTTP/1.....
* GET /password/?sw=0 HTTP/1.....
* @param url URL string
* @retval -3 just refresh page
* -2 no command given but password valid
* -1 invalid password
* 0 switch off
* 1 switch on
*/
int8_t analyseURL(string& url)
{
if (url.length() < 5 + PASSWORD.size() + 1)
return(-1);
if (url.substr(5, PASSWORD.size()) != PASSWORD)
return(-1);
uint8_t pos = 5 + PASSWORD.size();
if (url.substr(pos, 1) != "/")
return(-1);
if (url.substr(pos++, 1) == " ")
return(-2);
string cmd(url.substr(pos, 5));
if (cmd == "?sw=0")
return(0);
if (cmd == "?sw=1")
return(1);
return(-3);
}
/**
* @brief
* @note
* @param
* @retval
*/
string& movedPermanently(uint8_t flag)
{
if (flag == 1)
httpContent = "/" + PASSWORD + "/";
else
httpContent = "";
httpContent += "<h1>301 Moved Permanently</h1>\r\n";
return(httpContent);
}
/**
* @brief
* @note
* @param
* @retval
*/
string& showWebPage(int status)
{
char roomTempStr[5];
//roomTemp = ds1820.read();
sprintf(roomTempStr, "%3.1f", roomTemp);
/*$off*/
httpContent =
"<head>"
"<meta charset=\"utf-8\">"
"<meta name=\"viewport\" content=\" initial-scale=1.0; maximum-scale=1.0; minimum-scale=1.0; user-scalable=0;\"/>"
"<title>Smart Home</title>"
"<link href='http://fonts.googleapis.com/css?family=Droid+Sans&v1' rel='stylesheet' type='text/css'>"
"<style>"
".switch {"
"position: relative;"
"display: inline-block;"
"width: 60px;"
"height: 34px;"
"}"
".switch input {display:none;}"
".slider {"
"position: absolute;"
"cursor: pointer;"
"top: 0;"
"left: 0;"
"right: 0;"
"bottom: 0;"
"border-radius: 34px;"
"background-color: #ccc;"
"-webkit-transition: .4s;"
"transition: .4s;"
"}"
".slider:before {"
"position: absolute;"
"content: \"\";"
"height: 26px;"
"width: 26px;"
"left: 4px;"
"bottom: 4px;"
"border-radius: 50%;"
"background-color: white;"
"-webkit-transition: .4s;"
"transition: .4s;"
"}"
"input:checked + .slider {"
"background-color: #8ce196;"
"}"
"input:focus + .slider {"
"box-shadow: 0 0 1px #8ce196;"
"}"
"input:checked + .slider:before {"
"-webkit-transform: translateX(26px);"
"-ms-transform: translateX(26px);"
"transform: translateX(26px);"
"}"
"</style>"
"</head>"
"<body>"
"<h2><a href=\".\" title=\"Click to refresh the page\">Smart Home</a></h2>"
"<pre>Temperature:\t" + string(roomTempStr) + "°C</pre>"
"<pre>Heating:\t";
if(status == ON) {
httpContent +=
"<a href=\"./?sw=0\" class=\"switch\"> "
"<input type=\"checkbox\" checked>";
}
else {
httpContent +=
"<a href=\"./?sw=1\" class=\"switch\"> "
"<input type=\"checkbox\">";
}
httpContent +=
"<div class=\"slider\"></div>"
"</a>"
"</pre>"
"<hr>"
"<pre>2017 ARMmbed</pre>"
"</body>";
return httpContent;
/*$on*/
}
/**
* @brief
* @note
* @param
* @retval
*/
void sendHTTP(TcpClient& client, string& header, string& content)
{
/*$off*/
char content_length[5] = { };
header +=
"\r\nContent-Type: text/html\r\n"
"Content-Length: ";
sprintf(content_length, "%d", content.length());
header +=
string(content_length) + "\r\n"
"Pragma: no-cache\r\n"
"Connection: About to close\r\n\r\n";
string webpage = header + content;
client.write((uint8_t*)webpage.c_str(), webpage.length());
/*$on*/
}
/**
* @brief
* @note
* @param
* @retval
*/
int main(void)
{
printf("Starting ...\r\n");
// IP address must be unique and compatible with your network.
//net->set_network(IP, NETMASK, GATEWAY); // include this for using static IP address
net.connect();
// Show the network address
const char* ip = net.get_ip_address();
const char* netmask = net.get_netmask();
const char* gateway = net.get_gateway();
printf("IP address: %s\r\n", ip ? ip : "None");
printf("Netmask: %s\r\n", netmask ? netmask : "None");
printf("Gateway: %s\r\n\r\n", gateway ? gateway : "None");
printf("------------------------------------------------------\r\n");
printf("Usage: Type %s/%s/ into your web browser and hit ENTER\r\n\r\n", net.get_ip_address(), PASSWORD.c_str());
printf("------------------------------------------------------\r\n");
/* Open the server on ethernet stack */
server.open(&net);
/* Bind the HTTP port (TCP 80) to the server */
server.bind(PORT);
/* Can handle 5 simultaneous connections */
server.listen(5);
while (1) {
client = server.accept();
if (client) {
size_t size = client->available();
if (size > 0) {
uint8_t* buf = (uint8_t*)malloc(size);
size = client->read(buf, size);
string received((char*)buf);
free(buf);
if (received.substr(0, 3) != "GET") {
httpHeader = "HTTP/1.0 200 OK";
httpContent = "<h1>200 OK</h1>";
sendHTTP(*client, httpHeader, httpContent);
client->close();
continue;
}
if (received.substr(0, 6) == "GET / ") {
httpHeader = "HTTP/1.0 200 OK";
httpContent = "<p>Usage: http://host_or_ip/password</p>\r\n";
sendHTTP(*client, httpHeader, httpContent);
client->close();
continue;
}
int cmd = analyseURL(received);
switch (cmd) {
case -3:
// update webpage
httpHeader = "HTTP/1.0 200 OK";
sendHTTP(*client, httpHeader, showWebPage(output));
break;
case -2:
// redirect to the right base url
httpHeader = "HTTP/1.0 301 Moved Permanently\r\nLocation: ";
sendHTTP(*client, httpHeader, movedPermanently(1));
break;
case -1:
httpHeader = "HTTP/1.0 401 Unauthorized";
httpContent = "<h1>401 Unauthorized</h1>";
sendHTTP(*client, httpHeader, httpContent);
break;
case 0:
output = OFF; // output off
httpHeader = "HTTP/1.0 200 OK";
sendHTTP(*client, httpHeader, showWebPage(output));
break;
case 1:
output = ON; // output on
httpHeader = "HTTP/1.0 200 OK";
sendHTTP(*client, httpHeader, showWebPage(output));
break;
}
}
client->close();
}
}
}