Jack Hansdampf / Mbed OS WebSwitch_ENC28J60_GSOE

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Dependencies:   UIPEthernet_GSOE

main.cpp@11:6c0b20227ca2, 2019-08-27 (annotated)

Committer:
hudakz
Date:
Tue Aug 27 22:10:13 2019 +0000
Revision:
11:6c0b20227ca2
Parent:
10:b47c7921346f
Child:
12:7c46dcf6f7e2
Updated to use the latest UIPEthernet library.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hudakz 10:b47c7921346f 1 #include "mbed.h"
hudakz 0:68a0003c4cb8 2 #include <string>
hudakz 10:b47c7921346f 3 #include "UipEthernet.h"
hudakz 10:b47c7921346f 4 #include "TcpServer.h"
hudakz 10:b47c7921346f 5 #include "TcpClient.h"
hudakz 0:68a0003c4cb8 6
hudakz 10:b47c7921346f 7 using namespace std;
hudakz 4:d34811deedab 8
hudakz 11:6c0b20227ca2 9 //#define DEBUG
hudakz 11:6c0b20227ca2 10
hudakz 11:6c0b20227ca2 11 // To be used when a static IP is needed
hudakz 10:b47c7921346f 12 #define IP "192.168.1.35"
hudakz 10:b47c7921346f 13 #define GATEWAY "192.168.1.1"
hudakz 10:b47c7921346f 14 #define NETMASK "255.255.255.0"
hudakz 10:b47c7921346f 15 #define PORT 80
hudakz 0:68a0003c4cb8 16
hudakz 10:b47c7921346f 17 // The ENC28J60 chip doesn't have a built-in MAC address.
hudakz 10:b47c7921346f 18 // It's up to us to provide one which is unique within the connected network.
hudakz 10:b47c7921346f 19 // So modify the one below accordingly.
hudakz 11:6c0b20227ca2 20 const uint8_t MAC[6] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x06 };
hudakz 11:6c0b20227ca2 21 UipEthernet net(MAC, D11, D12, D13, D10); // mosi, miso, sck, cs
hudakz 11:6c0b20227ca2 22 TcpServer server;
hudakz 11:6c0b20227ca2 23 TcpClient* client;
hudakz 11:6c0b20227ca2 24 char receiveBuf[1024];
hudakz 10:b47c7921346f 25 const int OFF = 0;
hudakz 10:b47c7921346f 26 const int ON = 1;
hudakz 11:6c0b20227ca2 27 DigitalOut output(D3); // A digital output to be switched on/off
hudakz 11:6c0b20227ca2 28 float roomTemp = 21.8; // A temperature sensor output
hudakz 11:6c0b20227ca2 29 const string PASSWORD = "secret"; // Change as you like
hudakz 11:6c0b20227ca2 30 string httpHeader; // HTTP header
hudakz 11:6c0b20227ca2 31 string httpContent; // HTTP content
hudakz 0:68a0003c4cb8 32
hudakz 10:b47c7921346f 33 /**
hudakz 10:b47c7921346f 34 * @brief Analyses the received URL
hudakz 10:b47c7921346f 35 * @note The string passed to this function will look like this:
hudakz 10:b47c7921346f 36 * GET /HTTP/1.....
hudakz 10:b47c7921346f 37 * GET /password HTTP/1.....
hudakz 10:b47c7921346f 38 * GET /password/ HTTP/1.....
hudakz 10:b47c7921346f 39 * GET /password/?sw=1 HTTP/1.....
hudakz 10:b47c7921346f 40 * GET /password/?sw=0 HTTP/1.....
hudakz 10:b47c7921346f 41 * @param url URL string
hudakz 10:b47c7921346f 42 * @retval -3 just refresh page
hudakz 10:b47c7921346f 43 * -2 no command given but password valid
hudakz 10:b47c7921346f 44 * -1 invalid password
hudakz 10:b47c7921346f 45 * 0 switch off
hudakz 10:b47c7921346f 46 * 1 switch on
hudakz 10:b47c7921346f 47 */
hudakz 10:b47c7921346f 48 int8_t analyseURL(string& url)
hudakz 10:b47c7921346f 49 {
hudakz 10:b47c7921346f 50 if (url.length() < 5 + PASSWORD.size() + 1)
hudakz 10:b47c7921346f 51 return(-1);
hudakz 0:68a0003c4cb8 52
hudakz 10:b47c7921346f 53 if (url.substr(5, PASSWORD.size()) != PASSWORD)
hudakz 0:68a0003c4cb8 54 return(-1);
hudakz 0:68a0003c4cb8 55
hudakz 0:68a0003c4cb8 56 uint8_t pos = 5 + PASSWORD.size();
hudakz 0:68a0003c4cb8 57
hudakz 10:b47c7921346f 58 if (url.substr(pos, 1) != "/")
hudakz 0:68a0003c4cb8 59 return(-1);
hudakz 0:68a0003c4cb8 60
hudakz 10:b47c7921346f 61 if (url.substr(pos++, 1) == " ")
hudakz 10:b47c7921346f 62 return(-2);
hudakz 0:68a0003c4cb8 63
hudakz 10:b47c7921346f 64 string cmd(url.substr(pos, 5));
hudakz 0:68a0003c4cb8 65
hudakz 10:b47c7921346f 66 if (cmd == "?sw=0")
hudakz 0:68a0003c4cb8 67 return(0);
hudakz 0:68a0003c4cb8 68
hudakz 10:b47c7921346f 69 if (cmd == "?sw=1")
hudakz 0:68a0003c4cb8 70 return(1);
hudakz 0:68a0003c4cb8 71
hudakz 0:68a0003c4cb8 72 return(-3);
hudakz 0:68a0003c4cb8 73 }
hudakz 0:68a0003c4cb8 74
hudakz 5:0ab8292e37da 75 /**
hudakz 5:0ab8292e37da 76 * @brief
hudakz 5:0ab8292e37da 77 * @note
hudakz 5:0ab8292e37da 78 * @param
hudakz 5:0ab8292e37da 79 * @retval
hudakz 5:0ab8292e37da 80 */
hudakz 10:b47c7921346f 81 string& movedPermanently(uint8_t flag)
hudakz 10:b47c7921346f 82 {
hudakz 10:b47c7921346f 83 if (flag == 1)
hudakz 5:0ab8292e37da 84 httpContent = "/" + PASSWORD + "/";
hudakz 0:68a0003c4cb8 85 else
hudakz 0:68a0003c4cb8 86 httpContent = "";
hudakz 0:68a0003c4cb8 87
hudakz 0:68a0003c4cb8 88 httpContent += "<h1>301 Moved Permanently</h1>\r\n";
hudakz 0:68a0003c4cb8 89
hudakz 5:0ab8292e37da 90 return(httpContent);
hudakz 0:68a0003c4cb8 91 }
hudakz 0:68a0003c4cb8 92
hudakz 5:0ab8292e37da 93 /**
hudakz 5:0ab8292e37da 94 * @brief
hudakz 5:0ab8292e37da 95 * @note
hudakz 5:0ab8292e37da 96 * @param
hudakz 5:0ab8292e37da 97 * @retval
hudakz 5:0ab8292e37da 98 */
hudakz 10:b47c7921346f 99 string& showWebPage(int status)
hudakz 10:b47c7921346f 100 {
hudakz 10:b47c7921346f 101 char roomTempStr[5];
hudakz 10:b47c7921346f 102
hudakz 10:b47c7921346f 103 //roomTemp = ds1820.read();
hudakz 10:b47c7921346f 104 sprintf(roomTempStr, "%3.1f", roomTemp);
hudakz 0:68a0003c4cb8 105
hudakz 10:b47c7921346f 106 /*$off*/
hudakz 10:b47c7921346f 107 httpContent =
hudakz 10:b47c7921346f 108 "<head>"
hudakz 10:b47c7921346f 109 "<meta charset=\"utf-8\">"
hudakz 10:b47c7921346f 110 "<meta name=\"viewport\" content=\" initial-scale=1.0; maximum-scale=1.0; minimum-scale=1.0; user-scalable=0;\"/>"
hudakz 10:b47c7921346f 111 "<title>Smart Home</title>"
hudakz 10:b47c7921346f 112 "<link href='http://fonts.googleapis.com/css?family=Droid+Sans&v1' rel='stylesheet' type='text/css'>"
hudakz 10:b47c7921346f 113 "<style>"
hudakz 10:b47c7921346f 114 ".switch {"
hudakz 10:b47c7921346f 115 "position: relative;"
hudakz 10:b47c7921346f 116 "display: inline-block;"
hudakz 10:b47c7921346f 117 "width: 60px;"
hudakz 10:b47c7921346f 118 "height: 34px;"
hudakz 10:b47c7921346f 119 "}"
hudakz 10:b47c7921346f 120 ".switch input {display:none;}"
hudakz 10:b47c7921346f 121 ".slider {"
hudakz 10:b47c7921346f 122 "position: absolute;"
hudakz 10:b47c7921346f 123 "cursor: pointer;"
hudakz 10:b47c7921346f 124 "top: 0;"
hudakz 10:b47c7921346f 125 "left: 0;"
hudakz 10:b47c7921346f 126 "right: 0;"
hudakz 10:b47c7921346f 127 "bottom: 0;"
hudakz 10:b47c7921346f 128 "border-radius: 34px;"
hudakz 10:b47c7921346f 129 "background-color: #ccc;"
hudakz 10:b47c7921346f 130 "-webkit-transition: .4s;"
hudakz 10:b47c7921346f 131 "transition: .4s;"
hudakz 10:b47c7921346f 132 "}"
hudakz 10:b47c7921346f 133 ".slider:before {"
hudakz 10:b47c7921346f 134 "position: absolute;"
hudakz 10:b47c7921346f 135 "content: \"\";"
hudakz 10:b47c7921346f 136 "height: 26px;"
hudakz 10:b47c7921346f 137 "width: 26px;"
hudakz 10:b47c7921346f 138 "left: 4px;"
hudakz 10:b47c7921346f 139 "bottom: 4px;"
hudakz 10:b47c7921346f 140 "border-radius: 50%;"
hudakz 10:b47c7921346f 141 "background-color: white;"
hudakz 10:b47c7921346f 142 "-webkit-transition: .4s;"
hudakz 10:b47c7921346f 143 "transition: .4s;"
hudakz 10:b47c7921346f 144 "}"
hudakz 10:b47c7921346f 145 "input:checked + .slider {"
hudakz 10:b47c7921346f 146 "background-color: #8ce196;"
hudakz 10:b47c7921346f 147 "}"
hudakz 10:b47c7921346f 148 "input:focus + .slider {"
hudakz 10:b47c7921346f 149 "box-shadow: 0 0 1px #8ce196;"
hudakz 10:b47c7921346f 150 "}"
hudakz 10:b47c7921346f 151 "input:checked + .slider:before {"
hudakz 10:b47c7921346f 152 "-webkit-transform: translateX(26px);"
hudakz 10:b47c7921346f 153 "-ms-transform: translateX(26px);"
hudakz 10:b47c7921346f 154 "transform: translateX(26px);"
hudakz 10:b47c7921346f 155 "}"
hudakz 10:b47c7921346f 156 "</style>"
hudakz 10:b47c7921346f 157 "</head>"
hudakz 10:b47c7921346f 158
hudakz 10:b47c7921346f 159 "<body>"
hudakz 10:b47c7921346f 160 "<h2><a href=\".\" title=\"Click to refresh the page\">Smart Home</a></h2>"
hudakz 10:b47c7921346f 161 "<pre>Temperature:\t" + string(roomTempStr) + "&deg;C</pre>"
hudakz 10:b47c7921346f 162 "<pre>Heating:\t";
hudakz 10:b47c7921346f 163
hudakz 10:b47c7921346f 164 if(status == ON) {
hudakz 10:b47c7921346f 165 httpContent +=
hudakz 10:b47c7921346f 166 "<a href=\"./?sw=0\" class=\"switch\"> "
hudakz 10:b47c7921346f 167 "<input type=\"checkbox\" checked>";
hudakz 5:0ab8292e37da 168 }
hudakz 5:0ab8292e37da 169 else {
hudakz 10:b47c7921346f 170 httpContent +=
hudakz 10:b47c7921346f 171 "<a href=\"./?sw=1\" class=\"switch\"> "
hudakz 10:b47c7921346f 172 "<input type=\"checkbox\">";
hudakz 0:68a0003c4cb8 173 }
hudakz 0:68a0003c4cb8 174
hudakz 10:b47c7921346f 175 httpContent +=
hudakz 10:b47c7921346f 176 "<div class=\"slider\"></div>"
hudakz 10:b47c7921346f 177 "</a>"
hudakz 10:b47c7921346f 178 "</pre>"
hudakz 10:b47c7921346f 179 "<hr>"
hudakz 10:b47c7921346f 180 "<pre>2017 ARMmbed</pre>"
hudakz 10:b47c7921346f 181 "</body>";
hudakz 0:68a0003c4cb8 182
hudakz 10:b47c7921346f 183 return httpContent;
hudakz 10:b47c7921346f 184 /*$on*/
hudakz 0:68a0003c4cb8 185 }
hudakz 0:68a0003c4cb8 186
hudakz 5:0ab8292e37da 187 /**
hudakz 5:0ab8292e37da 188 * @brief
hudakz 5:0ab8292e37da 189 * @note
hudakz 5:0ab8292e37da 190 * @param
hudakz 5:0ab8292e37da 191 * @retval
hudakz 5:0ab8292e37da 192 */
hudakz 10:b47c7921346f 193 void sendHTTP(TcpClient& client, string& header, string& content)
hudakz 10:b47c7921346f 194 {
hudakz 10:b47c7921346f 195 /*$off*/
hudakz 10:b47c7921346f 196 char content_length[5] = { };
hudakz 10:b47c7921346f 197
hudakz 10:b47c7921346f 198 header +=
hudakz 10:b47c7921346f 199 "\r\nContent-Type: text/html\r\n"
hudakz 10:b47c7921346f 200 "Content-Length: ";
hudakz 10:b47c7921346f 201 sprintf(content_length, "%d", content.length());
hudakz 10:b47c7921346f 202 header +=
hudakz 10:b47c7921346f 203 string(content_length) + "\r\n"
hudakz 10:b47c7921346f 204 "Pragma: no-cache\r\n"
hudakz 10:b47c7921346f 205 "Connection: About to close\r\n\r\n";
hudakz 10:b47c7921346f 206
hudakz 10:b47c7921346f 207 string webpage = header + content;
hudakz 11:6c0b20227ca2 208 client.send((uint8_t*)webpage.c_str(), webpage.length());
hudakz 10:b47c7921346f 209 /*$on*/
hudakz 10:b47c7921346f 210 }
hudakz 10:b47c7921346f 211
hudakz 10:b47c7921346f 212 /**
hudakz 10:b47c7921346f 213 * @brief
hudakz 10:b47c7921346f 214 * @note
hudakz 10:b47c7921346f 215 * @param
hudakz 10:b47c7921346f 216 * @retval
hudakz 10:b47c7921346f 217 */
hudakz 10:b47c7921346f 218 int main(void)
hudakz 10:b47c7921346f 219 {
hudakz 10:b47c7921346f 220 printf("Starting ...\r\n");
hudakz 10:b47c7921346f 221
hudakz 10:b47c7921346f 222 // IP address must be unique and compatible with your network.
hudakz 10:b47c7921346f 223 //net->set_network(IP, NETMASK, GATEWAY); // include this for using static IP address
hudakz 10:b47c7921346f 224 net.connect();
hudakz 10:b47c7921346f 225
hudakz 10:b47c7921346f 226 // Show the network address
hudakz 10:b47c7921346f 227 const char* ip = net.get_ip_address();
hudakz 10:b47c7921346f 228 const char* netmask = net.get_netmask();
hudakz 10:b47c7921346f 229 const char* gateway = net.get_gateway();
hudakz 10:b47c7921346f 230
hudakz 10:b47c7921346f 231 printf("IP address: %s\r\n", ip ? ip : "None");
hudakz 10:b47c7921346f 232 printf("Netmask: %s\r\n", netmask ? netmask : "None");
hudakz 10:b47c7921346f 233 printf("Gateway: %s\r\n\r\n", gateway ? gateway : "None");
hudakz 10:b47c7921346f 234 printf("------------------------------------------------------\r\n");
hudakz 11:6c0b20227ca2 235 printf("Usage: Type %s/%s/ into your web browser and hit ENTER\r\n", net.get_ip_address(), PASSWORD.c_str());
hudakz 10:b47c7921346f 236 printf("------------------------------------------------------\r\n");
hudakz 10:b47c7921346f 237
hudakz 10:b47c7921346f 238 /* Open the server on ethernet stack */
hudakz 10:b47c7921346f 239 server.open(&net);
hudakz 10:b47c7921346f 240
hudakz 10:b47c7921346f 241 /* Bind the HTTP port (TCP 80) to the server */
hudakz 10:b47c7921346f 242 server.bind(PORT);
hudakz 10:b47c7921346f 243
hudakz 10:b47c7921346f 244 /* Can handle 5 simultaneous connections */
hudakz 10:b47c7921346f 245 server.listen(5);
hudakz 10:b47c7921346f 246
hudakz 11:6c0b20227ca2 247 while (true) {
hudakz 10:b47c7921346f 248 client = server.accept();
hudakz 10:b47c7921346f 249
hudakz 10:b47c7921346f 250 if (client) {
hudakz 11:6c0b20227ca2 251 client->recv((uint8_t*)receiveBuf, client->available());
hudakz 11:6c0b20227ca2 252 #ifdef DEBUG
hudakz 11:6c0b20227ca2 253 printf("Client with IP address %s connected.\r\n\r\n", client->getpeername());
hudakz 11:6c0b20227ca2 254 printf("Data received:\r\n%s\n\r", receiveBuf);
hudakz 11:6c0b20227ca2 255 #endif
hudakz 11:6c0b20227ca2 256 string received(receiveBuf);
hudakz 10:b47c7921346f 257
hudakz 11:6c0b20227ca2 258 if (received.substr(0, 3) != "GET") {
hudakz 11:6c0b20227ca2 259 httpHeader = "HTTP/1.0 200 OK";
hudakz 11:6c0b20227ca2 260 httpContent = "<h1>200 OK</h1>";
hudakz 11:6c0b20227ca2 261 sendHTTP(*client, httpHeader, httpContent);
hudakz 11:6c0b20227ca2 262 client->close();
hudakz 11:6c0b20227ca2 263 continue;
hudakz 11:6c0b20227ca2 264 }
hudakz 0:68a0003c4cb8 265
hudakz 11:6c0b20227ca2 266 if (received.substr(0, 6) == "GET / ") {
hudakz 11:6c0b20227ca2 267 httpHeader = "HTTP/1.0 200 OK";
hudakz 11:6c0b20227ca2 268 httpContent = "<p>Usage: http://host_or_ip/password</p>\r\n";
hudakz 11:6c0b20227ca2 269 sendHTTP(*client, httpHeader, httpContent);
hudakz 11:6c0b20227ca2 270 client->close();
hudakz 11:6c0b20227ca2 271 continue;
hudakz 11:6c0b20227ca2 272 }
hudakz 0:68a0003c4cb8 273
hudakz 11:6c0b20227ca2 274 int cmd = analyseURL(received);
hudakz 10:b47c7921346f 275
hudakz 11:6c0b20227ca2 276 switch (cmd) {
hudakz 11:6c0b20227ca2 277 case -3:
hudakz 11:6c0b20227ca2 278 // update webpage
hudakz 11:6c0b20227ca2 279 httpHeader = "HTTP/1.0 200 OK";
hudakz 11:6c0b20227ca2 280 sendHTTP(*client, httpHeader, showWebPage(output));
hudakz 11:6c0b20227ca2 281 break;
hudakz 10:b47c7921346f 282
hudakz 11:6c0b20227ca2 283 case -2:
hudakz 11:6c0b20227ca2 284 // redirect to the right base url
hudakz 11:6c0b20227ca2 285 httpHeader = "HTTP/1.0 301 Moved Permanently\r\nLocation: ";
hudakz 11:6c0b20227ca2 286 sendHTTP(*client, httpHeader, movedPermanently(1));
hudakz 11:6c0b20227ca2 287 break;
hudakz 0:68a0003c4cb8 288
hudakz 11:6c0b20227ca2 289 case -1:
hudakz 11:6c0b20227ca2 290 httpHeader = "HTTP/1.0 401 Unauthorized";
hudakz 11:6c0b20227ca2 291 httpContent = "<h1>401 Unauthorized</h1>";
hudakz 11:6c0b20227ca2 292 sendHTTP(*client, httpHeader, httpContent);
hudakz 11:6c0b20227ca2 293 break;
hudakz 0:68a0003c4cb8 294
hudakz 11:6c0b20227ca2 295 case 0:
hudakz 11:6c0b20227ca2 296 output = OFF; // output off
hudakz 11:6c0b20227ca2 297 httpHeader = "HTTP/1.0 200 OK";
hudakz 11:6c0b20227ca2 298 sendHTTP(*client, httpHeader, showWebPage(output));
hudakz 11:6c0b20227ca2 299 break;
hudakz 0:68a0003c4cb8 300
hudakz 11:6c0b20227ca2 301 case 1:
hudakz 11:6c0b20227ca2 302 output = ON; // output on
hudakz 11:6c0b20227ca2 303 httpHeader = "HTTP/1.0 200 OK";
hudakz 11:6c0b20227ca2 304 sendHTTP(*client, httpHeader, showWebPage(output));
hudakz 11:6c0b20227ca2 305 break;
hudakz 0:68a0003c4cb8 306 }
hudakz 11:6c0b20227ca2 307
hudakz 10:b47c7921346f 308 client->close();
hudakz 0:68a0003c4cb8 309 }
hudakz 0:68a0003c4cb8 310 }
hudakz 0:68a0003c4cb8 311 }