Jack Hansdampf / Mbed OS WebSwitch_ENC28J60_GSOE

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Dependencies:   UIPEthernet_GSOE

main.cpp@12:7c46dcf6f7e2, 2019-08-30 (annotated)

Committer:
hudakz
Date:
Fri Aug 30 08:23:46 2019 +0000
Revision:
12:7c46dcf6f7e2
Parent:
11:6c0b20227ca2
Child:
14:810ac368dd6e
Updated.

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 10:b47c7921346f 11 #define IP "192.168.1.35"
hudakz 10:b47c7921346f 12 #define GATEWAY "192.168.1.1"
hudakz 10:b47c7921346f 13 #define NETMASK "255.255.255.0"
hudakz 10:b47c7921346f 14 #define PORT 80
hudakz 0:68a0003c4cb8 15
hudakz 11:6c0b20227ca2 16 const uint8_t MAC[6] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x06 };
hudakz 11:6c0b20227ca2 17 UipEthernet net(MAC, D11, D12, D13, D10); // mosi, miso, sck, cs
hudakz 12:7c46dcf6f7e2 18 TcpServer server; // Ethernet server
hudakz 11:6c0b20227ca2 19 TcpClient* client;
hudakz 11:6c0b20227ca2 20 char receiveBuf[1024];
hudakz 10:b47c7921346f 21 const int OFF = 0;
hudakz 10:b47c7921346f 22 const int ON = 1;
hudakz 11:6c0b20227ca2 23 DigitalOut output(D3); // A digital output to be switched on/off
hudakz 11:6c0b20227ca2 24 float roomTemp = 21.8; // A temperature sensor output
hudakz 11:6c0b20227ca2 25 const string PASSWORD = "secret"; // Change as you like
hudakz 11:6c0b20227ca2 26 string httpHeader; // HTTP header
hudakz 11:6c0b20227ca2 27 string httpContent; // HTTP content
hudakz 0:68a0003c4cb8 28
hudakz 10:b47c7921346f 29 /**
hudakz 10:b47c7921346f 30 * @brief Analyses the received URL
hudakz 10:b47c7921346f 31 * @note The string passed to this function will look like this:
hudakz 10:b47c7921346f 32 * GET /HTTP/1.....
hudakz 10:b47c7921346f 33 * GET /password HTTP/1.....
hudakz 10:b47c7921346f 34 * GET /password/ HTTP/1.....
hudakz 10:b47c7921346f 35 * GET /password/?sw=1 HTTP/1.....
hudakz 10:b47c7921346f 36 * GET /password/?sw=0 HTTP/1.....
hudakz 10:b47c7921346f 37 * @param url URL string
hudakz 10:b47c7921346f 38 * @retval -3 just refresh page
hudakz 10:b47c7921346f 39 * -2 no command given but password valid
hudakz 10:b47c7921346f 40 * -1 invalid password
hudakz 10:b47c7921346f 41 * 0 switch off
hudakz 10:b47c7921346f 42 * 1 switch on
hudakz 10:b47c7921346f 43 */
hudakz 10:b47c7921346f 44 int8_t analyseURL(string& url)
hudakz 10:b47c7921346f 45 {
hudakz 10:b47c7921346f 46 if (url.length() < 5 + PASSWORD.size() + 1)
hudakz 10:b47c7921346f 47 return(-1);
hudakz 0:68a0003c4cb8 48
hudakz 10:b47c7921346f 49 if (url.substr(5, PASSWORD.size()) != PASSWORD)
hudakz 0:68a0003c4cb8 50 return(-1);
hudakz 0:68a0003c4cb8 51
hudakz 0:68a0003c4cb8 52 uint8_t pos = 5 + PASSWORD.size();
hudakz 0:68a0003c4cb8 53
hudakz 10:b47c7921346f 54 if (url.substr(pos, 1) != "/")
hudakz 0:68a0003c4cb8 55 return(-1);
hudakz 0:68a0003c4cb8 56
hudakz 10:b47c7921346f 57 if (url.substr(pos++, 1) == " ")
hudakz 10:b47c7921346f 58 return(-2);
hudakz 0:68a0003c4cb8 59
hudakz 10:b47c7921346f 60 string cmd(url.substr(pos, 5));
hudakz 0:68a0003c4cb8 61
hudakz 10:b47c7921346f 62 if (cmd == "?sw=0")
hudakz 0:68a0003c4cb8 63 return(0);
hudakz 0:68a0003c4cb8 64
hudakz 10:b47c7921346f 65 if (cmd == "?sw=1")
hudakz 0:68a0003c4cb8 66 return(1);
hudakz 0:68a0003c4cb8 67
hudakz 0:68a0003c4cb8 68 return(-3);
hudakz 0:68a0003c4cb8 69 }
hudakz 0:68a0003c4cb8 70
hudakz 5:0ab8292e37da 71 /**
hudakz 5:0ab8292e37da 72 * @brief
hudakz 5:0ab8292e37da 73 * @note
hudakz 5:0ab8292e37da 74 * @param
hudakz 5:0ab8292e37da 75 * @retval
hudakz 5:0ab8292e37da 76 */
hudakz 10:b47c7921346f 77 string& movedPermanently(uint8_t flag)
hudakz 10:b47c7921346f 78 {
hudakz 10:b47c7921346f 79 if (flag == 1)
hudakz 5:0ab8292e37da 80 httpContent = "/" + PASSWORD + "/";
hudakz 0:68a0003c4cb8 81 else
hudakz 0:68a0003c4cb8 82 httpContent = "";
hudakz 0:68a0003c4cb8 83
hudakz 0:68a0003c4cb8 84 httpContent += "<h1>301 Moved Permanently</h1>\r\n";
hudakz 0:68a0003c4cb8 85
hudakz 5:0ab8292e37da 86 return(httpContent);
hudakz 0:68a0003c4cb8 87 }
hudakz 0:68a0003c4cb8 88
hudakz 5:0ab8292e37da 89 /**
hudakz 5:0ab8292e37da 90 * @brief
hudakz 5:0ab8292e37da 91 * @note
hudakz 5:0ab8292e37da 92 * @param
hudakz 5:0ab8292e37da 93 * @retval
hudakz 5:0ab8292e37da 94 */
hudakz 10:b47c7921346f 95 string& showWebPage(int status)
hudakz 10:b47c7921346f 96 {
hudakz 10:b47c7921346f 97 char roomTempStr[5];
hudakz 10:b47c7921346f 98
hudakz 10:b47c7921346f 99 //roomTemp = ds1820.read();
hudakz 10:b47c7921346f 100 sprintf(roomTempStr, "%3.1f", roomTemp);
hudakz 0:68a0003c4cb8 101
hudakz 10:b47c7921346f 102 /*$off*/
hudakz 10:b47c7921346f 103 httpContent =
hudakz 10:b47c7921346f 104 "<head>"
hudakz 10:b47c7921346f 105 "<meta charset=\"utf-8\">"
hudakz 10:b47c7921346f 106 "<meta name=\"viewport\" content=\" initial-scale=1.0; maximum-scale=1.0; minimum-scale=1.0; user-scalable=0;\"/>"
hudakz 10:b47c7921346f 107 "<title>Smart Home</title>"
hudakz 10:b47c7921346f 108 "<link href='http://fonts.googleapis.com/css?family=Droid+Sans&v1' rel='stylesheet' type='text/css'>"
hudakz 10:b47c7921346f 109 "<style>"
hudakz 10:b47c7921346f 110 ".switch {"
hudakz 10:b47c7921346f 111 "position: relative;"
hudakz 10:b47c7921346f 112 "display: inline-block;"
hudakz 10:b47c7921346f 113 "width: 60px;"
hudakz 10:b47c7921346f 114 "height: 34px;"
hudakz 10:b47c7921346f 115 "}"
hudakz 10:b47c7921346f 116 ".switch input {display:none;}"
hudakz 10:b47c7921346f 117 ".slider {"
hudakz 10:b47c7921346f 118 "position: absolute;"
hudakz 10:b47c7921346f 119 "cursor: pointer;"
hudakz 10:b47c7921346f 120 "top: 0;"
hudakz 10:b47c7921346f 121 "left: 0;"
hudakz 10:b47c7921346f 122 "right: 0;"
hudakz 10:b47c7921346f 123 "bottom: 0;"
hudakz 10:b47c7921346f 124 "border-radius: 34px;"
hudakz 10:b47c7921346f 125 "background-color: #ccc;"
hudakz 10:b47c7921346f 126 "-webkit-transition: .4s;"
hudakz 10:b47c7921346f 127 "transition: .4s;"
hudakz 10:b47c7921346f 128 "}"
hudakz 10:b47c7921346f 129 ".slider:before {"
hudakz 10:b47c7921346f 130 "position: absolute;"
hudakz 10:b47c7921346f 131 "content: \"\";"
hudakz 10:b47c7921346f 132 "height: 26px;"
hudakz 10:b47c7921346f 133 "width: 26px;"
hudakz 10:b47c7921346f 134 "left: 4px;"
hudakz 10:b47c7921346f 135 "bottom: 4px;"
hudakz 10:b47c7921346f 136 "border-radius: 50%;"
hudakz 10:b47c7921346f 137 "background-color: white;"
hudakz 10:b47c7921346f 138 "-webkit-transition: .4s;"
hudakz 10:b47c7921346f 139 "transition: .4s;"
hudakz 10:b47c7921346f 140 "}"
hudakz 10:b47c7921346f 141 "input:checked + .slider {"
hudakz 10:b47c7921346f 142 "background-color: #8ce196;"
hudakz 10:b47c7921346f 143 "}"
hudakz 10:b47c7921346f 144 "input:focus + .slider {"
hudakz 10:b47c7921346f 145 "box-shadow: 0 0 1px #8ce196;"
hudakz 10:b47c7921346f 146 "}"
hudakz 10:b47c7921346f 147 "input:checked + .slider:before {"
hudakz 10:b47c7921346f 148 "-webkit-transform: translateX(26px);"
hudakz 10:b47c7921346f 149 "-ms-transform: translateX(26px);"
hudakz 10:b47c7921346f 150 "transform: translateX(26px);"
hudakz 10:b47c7921346f 151 "}"
hudakz 10:b47c7921346f 152 "</style>"
hudakz 10:b47c7921346f 153 "</head>"
hudakz 10:b47c7921346f 154
hudakz 10:b47c7921346f 155 "<body>"
hudakz 10:b47c7921346f 156 "<h2><a href=\".\" title=\"Click to refresh the page\">Smart Home</a></h2>"
hudakz 10:b47c7921346f 157 "<pre>Temperature:\t" + string(roomTempStr) + "&deg;C</pre>"
hudakz 10:b47c7921346f 158 "<pre>Heating:\t";
hudakz 10:b47c7921346f 159
hudakz 10:b47c7921346f 160 if(status == ON) {
hudakz 10:b47c7921346f 161 httpContent +=
hudakz 10:b47c7921346f 162 "<a href=\"./?sw=0\" class=\"switch\"> "
hudakz 10:b47c7921346f 163 "<input type=\"checkbox\" checked>";
hudakz 5:0ab8292e37da 164 }
hudakz 5:0ab8292e37da 165 else {
hudakz 10:b47c7921346f 166 httpContent +=
hudakz 10:b47c7921346f 167 "<a href=\"./?sw=1\" class=\"switch\"> "
hudakz 10:b47c7921346f 168 "<input type=\"checkbox\">";
hudakz 0:68a0003c4cb8 169 }
hudakz 0:68a0003c4cb8 170
hudakz 10:b47c7921346f 171 httpContent +=
hudakz 10:b47c7921346f 172 "<div class=\"slider\"></div>"
hudakz 10:b47c7921346f 173 "</a>"
hudakz 10:b47c7921346f 174 "</pre>"
hudakz 10:b47c7921346f 175 "<hr>"
hudakz 10:b47c7921346f 176 "<pre>2017 ARMmbed</pre>"
hudakz 10:b47c7921346f 177 "</body>";
hudakz 0:68a0003c4cb8 178
hudakz 10:b47c7921346f 179 return httpContent;
hudakz 10:b47c7921346f 180 /*$on*/
hudakz 0:68a0003c4cb8 181 }
hudakz 0:68a0003c4cb8 182
hudakz 5:0ab8292e37da 183 /**
hudakz 5:0ab8292e37da 184 * @brief
hudakz 5:0ab8292e37da 185 * @note
hudakz 5:0ab8292e37da 186 * @param
hudakz 5:0ab8292e37da 187 * @retval
hudakz 5:0ab8292e37da 188 */
hudakz 10:b47c7921346f 189 void sendHTTP(TcpClient& client, string& header, string& content)
hudakz 10:b47c7921346f 190 {
hudakz 10:b47c7921346f 191 /*$off*/
hudakz 10:b47c7921346f 192 char content_length[5] = { };
hudakz 10:b47c7921346f 193
hudakz 10:b47c7921346f 194 header +=
hudakz 10:b47c7921346f 195 "\r\nContent-Type: text/html\r\n"
hudakz 10:b47c7921346f 196 "Content-Length: ";
hudakz 10:b47c7921346f 197 sprintf(content_length, "%d", content.length());
hudakz 10:b47c7921346f 198 header +=
hudakz 10:b47c7921346f 199 string(content_length) + "\r\n"
hudakz 10:b47c7921346f 200 "Pragma: no-cache\r\n"
hudakz 10:b47c7921346f 201 "Connection: About to close\r\n\r\n";
hudakz 10:b47c7921346f 202
hudakz 10:b47c7921346f 203 string webpage = header + content;
hudakz 11:6c0b20227ca2 204 client.send((uint8_t*)webpage.c_str(), webpage.length());
hudakz 10:b47c7921346f 205 /*$on*/
hudakz 10:b47c7921346f 206 }
hudakz 10:b47c7921346f 207
hudakz 10:b47c7921346f 208 /**
hudakz 10:b47c7921346f 209 * @brief
hudakz 10:b47c7921346f 210 * @note
hudakz 10:b47c7921346f 211 * @param
hudakz 10:b47c7921346f 212 * @retval
hudakz 10:b47c7921346f 213 */
hudakz 10:b47c7921346f 214 int main(void)
hudakz 10:b47c7921346f 215 {
hudakz 10:b47c7921346f 216 printf("Starting ...\r\n");
hudakz 10:b47c7921346f 217
hudakz 10:b47c7921346f 218 // IP address must be unique and compatible with your network.
hudakz 12:7c46dcf6f7e2 219 //net.set_network(IP, NETMASK, GATEWAY); // include this for using static IP address
hudakz 10:b47c7921346f 220 net.connect();
hudakz 10:b47c7921346f 221
hudakz 10:b47c7921346f 222 // Show the network address
hudakz 10:b47c7921346f 223 const char* ip = net.get_ip_address();
hudakz 10:b47c7921346f 224 const char* netmask = net.get_netmask();
hudakz 10:b47c7921346f 225 const char* gateway = net.get_gateway();
hudakz 10:b47c7921346f 226
hudakz 10:b47c7921346f 227 printf("IP address: %s\r\n", ip ? ip : "None");
hudakz 10:b47c7921346f 228 printf("Netmask: %s\r\n", netmask ? netmask : "None");
hudakz 10:b47c7921346f 229 printf("Gateway: %s\r\n\r\n", gateway ? gateway : "None");
hudakz 10:b47c7921346f 230 printf("------------------------------------------------------\r\n");
hudakz 11:6c0b20227ca2 231 printf("Usage: Type %s/%s/ into your web browser and hit ENTER\r\n", net.get_ip_address(), PASSWORD.c_str());
hudakz 10:b47c7921346f 232 printf("------------------------------------------------------\r\n");
hudakz 10:b47c7921346f 233
hudakz 10:b47c7921346f 234 /* Open the server on ethernet stack */
hudakz 10:b47c7921346f 235 server.open(&net);
hudakz 10:b47c7921346f 236
hudakz 10:b47c7921346f 237 /* Bind the HTTP port (TCP 80) to the server */
hudakz 10:b47c7921346f 238 server.bind(PORT);
hudakz 10:b47c7921346f 239
hudakz 10:b47c7921346f 240 /* Can handle 5 simultaneous connections */
hudakz 10:b47c7921346f 241 server.listen(5);
hudakz 10:b47c7921346f 242
hudakz 11:6c0b20227ca2 243 while (true) {
hudakz 10:b47c7921346f 244 client = server.accept();
hudakz 10:b47c7921346f 245
hudakz 10:b47c7921346f 246 if (client) {
hudakz 11:6c0b20227ca2 247 client->recv((uint8_t*)receiveBuf, client->available());
hudakz 11:6c0b20227ca2 248 #ifdef DEBUG
hudakz 11:6c0b20227ca2 249 printf("Client with IP address %s connected.\r\n\r\n", client->getpeername());
hudakz 11:6c0b20227ca2 250 printf("Data received:\r\n%s\n\r", receiveBuf);
hudakz 11:6c0b20227ca2 251 #endif
hudakz 11:6c0b20227ca2 252 string received(receiveBuf);
hudakz 10:b47c7921346f 253
hudakz 11:6c0b20227ca2 254 if (received.substr(0, 3) != "GET") {
hudakz 11:6c0b20227ca2 255 httpHeader = "HTTP/1.0 200 OK";
hudakz 11:6c0b20227ca2 256 httpContent = "<h1>200 OK</h1>";
hudakz 11:6c0b20227ca2 257 sendHTTP(*client, httpHeader, httpContent);
hudakz 11:6c0b20227ca2 258 client->close();
hudakz 11:6c0b20227ca2 259 continue;
hudakz 11:6c0b20227ca2 260 }
hudakz 0:68a0003c4cb8 261
hudakz 11:6c0b20227ca2 262 if (received.substr(0, 6) == "GET / ") {
hudakz 11:6c0b20227ca2 263 httpHeader = "HTTP/1.0 200 OK";
hudakz 11:6c0b20227ca2 264 httpContent = "<p>Usage: http://host_or_ip/password</p>\r\n";
hudakz 11:6c0b20227ca2 265 sendHTTP(*client, httpHeader, httpContent);
hudakz 11:6c0b20227ca2 266 client->close();
hudakz 11:6c0b20227ca2 267 continue;
hudakz 11:6c0b20227ca2 268 }
hudakz 0:68a0003c4cb8 269
hudakz 11:6c0b20227ca2 270 int cmd = analyseURL(received);
hudakz 10:b47c7921346f 271
hudakz 11:6c0b20227ca2 272 switch (cmd) {
hudakz 11:6c0b20227ca2 273 case -3:
hudakz 11:6c0b20227ca2 274 // update webpage
hudakz 11:6c0b20227ca2 275 httpHeader = "HTTP/1.0 200 OK";
hudakz 11:6c0b20227ca2 276 sendHTTP(*client, httpHeader, showWebPage(output));
hudakz 11:6c0b20227ca2 277 break;
hudakz 10:b47c7921346f 278
hudakz 11:6c0b20227ca2 279 case -2:
hudakz 11:6c0b20227ca2 280 // redirect to the right base url
hudakz 11:6c0b20227ca2 281 httpHeader = "HTTP/1.0 301 Moved Permanently\r\nLocation: ";
hudakz 11:6c0b20227ca2 282 sendHTTP(*client, httpHeader, movedPermanently(1));
hudakz 11:6c0b20227ca2 283 break;
hudakz 0:68a0003c4cb8 284
hudakz 11:6c0b20227ca2 285 case -1:
hudakz 11:6c0b20227ca2 286 httpHeader = "HTTP/1.0 401 Unauthorized";
hudakz 11:6c0b20227ca2 287 httpContent = "<h1>401 Unauthorized</h1>";
hudakz 11:6c0b20227ca2 288 sendHTTP(*client, httpHeader, httpContent);
hudakz 11:6c0b20227ca2 289 break;
hudakz 0:68a0003c4cb8 290
hudakz 11:6c0b20227ca2 291 case 0:
hudakz 11:6c0b20227ca2 292 output = OFF; // output off
hudakz 11:6c0b20227ca2 293 httpHeader = "HTTP/1.0 200 OK";
hudakz 11:6c0b20227ca2 294 sendHTTP(*client, httpHeader, showWebPage(output));
hudakz 11:6c0b20227ca2 295 break;
hudakz 0:68a0003c4cb8 296
hudakz 11:6c0b20227ca2 297 case 1:
hudakz 11:6c0b20227ca2 298 output = ON; // output on
hudakz 11:6c0b20227ca2 299 httpHeader = "HTTP/1.0 200 OK";
hudakz 11:6c0b20227ca2 300 sendHTTP(*client, httpHeader, showWebPage(output));
hudakz 11:6c0b20227ca2 301 break;
hudakz 0:68a0003c4cb8 302 }
hudakz 11:6c0b20227ca2 303
hudakz 10:b47c7921346f 304 client->close();
hudakz 0:68a0003c4cb8 305 }
hudakz 0:68a0003c4cb8 306 }
hudakz 0:68a0003c4cb8 307 }