Jack Hansdampf / Mbed OS WebSwitch_ENC28J60_GSOE

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Dependencies:   UIPEthernet_GSOE

main.cpp@9:6f63abd61de8, 2019-02-05 (annotated)

Committer:
hudakz
Date:
Tue Feb 05 14:15:05 2019 +0000
Revision:
9:6f63abd61de8
Parent:
8:3bd85b731cca 
Updated.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hudakz 7:f5e11393836d 1 /*
hudakz 5:0ab8292e37da 2 * In this project LED1 on the mbed board is switched on/off using a web browser.
hudakz 5:0ab8292e37da 3 * However, you can easily modify the project to remotely switch on/off any external device.
hudakz 5:0ab8292e37da 4 * The HTTP server is built from an mbed board and an ENC28J60 board.
hudakz 5:0ab8292e37da 5 * ENC28J60 is driven by the UIPEthernet library <https://github.com/ntruchsess/arduino_uip>.
hudakz 4:d34811deedab 6 * The example is based on the Tuxgraphics Web Switch <http://www.tuxgraphics.org/>.
hudakz 0:68a0003c4cb8 7 */
hudakz 7:f5e11393836d 8
hudakz 7:f5e11393836d 9 //#define TARGET_STM32F103C8T6 1 // uncomment this line when using STM32F103C8T6 boards!
hudakz 6:b38a3b476a45 10
hudakz 6:b38a3b476a45 11 #if defined(TARGET_STM32F103C8T6)
hudakz 7:f5e11393836d 12 #define LED_PIN PC_13
hudakz 7:f5e11393836d 13 const int OFF = 1;
hudakz 7:f5e11393836d 14 const int ON = 0;
hudakz 6:b38a3b476a45 15 #else
hudakz 7:f5e11393836d 16 #define LED_PIN LED1
hudakz 7:f5e11393836d 17 const int OFF = 0;
hudakz 7:f5e11393836d 18 const int ON = 1;
hudakz 6:b38a3b476a45 19 #endif
hudakz 6:b38a3b476a45 20
hudakz 6:b38a3b476a45 21 #include "mbed.h"
hudakz 6:b38a3b476a45 22 #include "UIPEthernet.h"
hudakz 6:b38a3b476a45 23 #include "UIPServer.h"
hudakz 6:b38a3b476a45 24 #include "UIPClient.h"
hudakz 6:b38a3b476a45 25 #include "string"
hudakz 0:68a0003c4cb8 26
hudakz 5:0ab8292e37da 27 using namespace std;
hudakz 0:68a0003c4cb8 28
hudakz 9:6f63abd61de8 29 Serial pc(PA_2, PA_3);
hudakz 6:b38a3b476a45 30
hudakz 9:6f63abd61de8 31 //#define DHCP 1 // if you'd like to use static IP address comment out this line
hudakz 6:b38a3b476a45 32
hudakz 8:3bd85b731cca 33 // uIPEthernet is the name of a global instance of UIPEthernet.
hudakz 0:68a0003c4cb8 34 // Do not change the name! It is used within the UIPEthernet library.
hudakz 9:6f63abd61de8 35 UIPEthernet uIPEthernet(PB_5, PB_4, PB_3, PA_10); // mosi, miso, sck, cs
hudakz 0:68a0003c4cb8 36
hudakz 4:d34811deedab 37 // Note:
hudakz 4:d34811deedab 38 // If it happends that any of the SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS pins collide with LED1 pin
hudakz 5:0ab8292e37da 39 // then either use different SPI port (if available on the board) and change the pin names
hudakz 8:3bd85b731cca 40 // in the constructor uIPEthernet(...) accordingly or instead of using LED1 pin, select
hudakz 5:0ab8292e37da 41 // a free pin (not used by SPI port) and connect to it an external LED which is connected
hudakz 5:0ab8292e37da 42 // to a 220 Ohm resitor that is connected to the groud.
hudakz 4:d34811deedab 43 // In the second case remember to replace LED1 in sw(LED1) constructor (see below).
hudakz 5:0ab8292e37da 44 // MAC number must be unique within the connected network. Modify as appropriate.
hudakz 5:0ab8292e37da 45 const uint8_t MY_MAC[6] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x06 };
hudakz 5:0ab8292e37da 46 const uint16_t MY_PORT = 80; // for HTTP connection
hudakz 5:0ab8292e37da 47 EthernetServer myServer = EthernetServer(MY_PORT);
hudakz 5:0ab8292e37da 48
hudakz 0:68a0003c4cb8 49 // In this example we are turning on/off LED1.
hudakz 7:f5e11393836d 50 DigitalOut sw(LED_PIN); // Change LED_PIN to a pin of your choice.
hudakz 7:f5e11393836d 51 //DigitalOut sw(D9); // Change LED_PIN to a pin of your choice.
hudakz 7:f5e11393836d 52 float roomTemp = 21.8; // A temperature sensor output
hudakz 0:68a0003c4cb8 53
hudakz 5:0ab8292e37da 54 // However, make sure that it does not collide with any of the SPI pins
hudakz 8:3bd85b731cca 55 // already used in the uIPEthernet(...) constructor above!
hudakz 5:0ab8292e37da 56 const string PASSWORD = "secret"; // change as you like
hudakz 5:0ab8292e37da 57 const string HTTP_OK = "HTTP/1.0 200 OK";
hudakz 5:0ab8292e37da 58 const string MOVED_PERM = "HTTP/1.0 301 Moved Permanently\r\nLocation: ";
hudakz 5:0ab8292e37da 59 const string UNAUTHORIZED = "HTTP/1.0 401 Unauthorized";
hudakz 5:0ab8292e37da 60 string httpHeader; // HTTP header
hudakz 5:0ab8292e37da 61 string httpContent; // HTTP content
hudakz 0:68a0003c4cb8 62
hudakz 7:f5e11393836d 63 /**
hudakz 7:f5e11393836d 64 * @brief Analyses the received URL
hudakz 7:f5e11393836d 65 * @note The string passed to this function will look like this:
hudakz 7:f5e11393836d 66 * GET /password HTTP/1.....
hudakz 7:f5e11393836d 67 * GET /password/ HTTP/1.....
hudakz 7:f5e11393836d 68 * GET /password/?sw=1 HTTP/1.....
hudakz 7:f5e11393836d 69 * GET /password/?sw=0 HTTP/1.....
hudakz 7:f5e11393836d 70 * @param url URL string
hudakz 7:f5e11393836d 71 * @retval -1 invalid password
hudakz 7:f5e11393836d 72 * -2 no command given but password valid
hudakz 7:f5e11393836d 73 * -3 just refresh page
hudakz 7:f5e11393836d 74 * 0 switch off
hudakz 7:f5e11393836d 75 * 1 switch on
hudakz 7:f5e11393836d 76 */
hudakz 7:f5e11393836d 77 int8_t analyseURL(string& url) {
hudakz 7:f5e11393836d 78 if(url.substr(5, PASSWORD.size()) != PASSWORD)
hudakz 0:68a0003c4cb8 79 return(-1);
hudakz 0:68a0003c4cb8 80
hudakz 0:68a0003c4cb8 81 uint8_t pos = 5 + PASSWORD.size();
hudakz 0:68a0003c4cb8 82
hudakz 7:f5e11393836d 83 if(url.substr(pos, 1) == " ")
hudakz 0:68a0003c4cb8 84 return(-2);
hudakz 0:68a0003c4cb8 85
hudakz 7:f5e11393836d 86 if(url.substr(pos++, 1) != "/")
hudakz 0:68a0003c4cb8 87 return(-1);
hudakz 0:68a0003c4cb8 88
hudakz 7:f5e11393836d 89 string cmd(url.substr(pos, 5));
hudakz 0:68a0003c4cb8 90
hudakz 0:68a0003c4cb8 91 if(cmd == "?sw=0")
hudakz 6:b38a3b476a45 92 return(OFF);
hudakz 0:68a0003c4cb8 93
hudakz 0:68a0003c4cb8 94 if(cmd == "?sw=1")
hudakz 6:b38a3b476a45 95 return(ON);
hudakz 0:68a0003c4cb8 96
hudakz 0:68a0003c4cb8 97 return(-3);
hudakz 0:68a0003c4cb8 98 }
hudakz 0:68a0003c4cb8 99
hudakz 5:0ab8292e37da 100 /**
hudakz 5:0ab8292e37da 101 * @brief
hudakz 5:0ab8292e37da 102 * @note
hudakz 5:0ab8292e37da 103 * @param
hudakz 5:0ab8292e37da 104 * @retval
hudakz 5:0ab8292e37da 105 */
hudakz 7:f5e11393836d 106 string& movedPermanently(uint8_t flag)
hudakz 7:f5e11393836d 107 {
hudakz 0:68a0003c4cb8 108 if(flag == 1)
hudakz 5:0ab8292e37da 109 httpContent = "/" + PASSWORD + "/";
hudakz 0:68a0003c4cb8 110 else
hudakz 0:68a0003c4cb8 111 httpContent = "";
hudakz 0:68a0003c4cb8 112
hudakz 0:68a0003c4cb8 113 httpContent += "<h1>301 Moved Permanently</h1>\r\n";
hudakz 0:68a0003c4cb8 114
hudakz 5:0ab8292e37da 115 return(httpContent);
hudakz 0:68a0003c4cb8 116 }
hudakz 0:68a0003c4cb8 117
hudakz 5:0ab8292e37da 118 /**
hudakz 5:0ab8292e37da 119 * @brief
hudakz 5:0ab8292e37da 120 * @note
hudakz 5:0ab8292e37da 121 * @param
hudakz 5:0ab8292e37da 122 * @retval
hudakz 5:0ab8292e37da 123 */
hudakz 6:b38a3b476a45 124 string& showWebPage(uint8_t status) {
hudakz 7:f5e11393836d 125 char roomTempStr[5];
hudakz 7:f5e11393836d 126
hudakz 7:f5e11393836d 127 //roomTemp = ds1820.read();
hudakz 7:f5e11393836d 128 sprintf(roomTempStr, "%3.1f", roomTemp);
hudakz 7:f5e11393836d 129
hudakz 8:3bd85b731cca 130 httpContent = "<h2><a href=\".\" title=\"Click to refresh the page\">Smart Home</a></h2>";
hudakz 7:f5e11393836d 131 httpContent += "<pre>Temperature:\t" + string(roomTempStr) + "&deg;C\r\n</pre>";
hudakz 0:68a0003c4cb8 132
hudakz 6:b38a3b476a45 133 if(status == ON) {
hudakz 7:f5e11393836d 134 httpContent += "<pre>\r\nHeating:\t<font color=#FF0000>On </font>";
hudakz 7:f5e11393836d 135 httpContent += " <a href=\"./?sw=0\"><button>Turn off</button></a>\r\n";
hudakz 5:0ab8292e37da 136 }
hudakz 5:0ab8292e37da 137 else {
hudakz 7:f5e11393836d 138 httpContent += "<pre>\r\nHeating:\t<font color=#999999>Off</font>";
hudakz 7:f5e11393836d 139 httpContent += " <a href=\"./?sw=1\"><button>Turn on</button></a>\r\n";
hudakz 0:68a0003c4cb8 140 }
hudakz 0:68a0003c4cb8 141
hudakz 0:68a0003c4cb8 142 httpContent += "</pre>\r\n";
hudakz 0:68a0003c4cb8 143 httpContent += "<hr>\r\n";
hudakz 7:f5e11393836d 144 httpContent += "<pre>2017 ARMmbed</pre>";
hudakz 0:68a0003c4cb8 145 return httpContent;
hudakz 0:68a0003c4cb8 146 }
hudakz 0:68a0003c4cb8 147
hudakz 5:0ab8292e37da 148 /**
hudakz 5:0ab8292e37da 149 * @brief
hudakz 5:0ab8292e37da 150 * @note
hudakz 5:0ab8292e37da 151 * @param
hudakz 5:0ab8292e37da 152 * @retval
hudakz 5:0ab8292e37da 153 */
hudakz 7:f5e11393836d 154 void sendHTTP(EthernetClient& client, string& header, string& content)
hudakz 7:f5e11393836d 155 {
hudakz 5:0ab8292e37da 156 char content_length[5] = { };
hudakz 0:68a0003c4cb8 157
hudakz 2:76f339a1ba9b 158 header += "\r\nContent-Type: text/html\r\n";
hudakz 0:68a0003c4cb8 159 header += "Content-Length: ";
hudakz 0:68a0003c4cb8 160 sprintf(content_length, "%d", content.length());
hudakz 0:68a0003c4cb8 161 header += string(content_length) + "\r\n";
hudakz 0:68a0003c4cb8 162 header += "Pragma: no-cache\r\n";
hudakz 0:68a0003c4cb8 163 header += "Connection: About to close\r\n";
hudakz 0:68a0003c4cb8 164 header += "\r\n";
hudakz 5:0ab8292e37da 165
hudakz 5:0ab8292e37da 166 string webpage = header + content;
hudakz 5:0ab8292e37da 167 client.write((uint8_t*)webpage.c_str(), webpage.length());
hudakz 0:68a0003c4cb8 168 }
hudakz 0:68a0003c4cb8 169
hudakz 5:0ab8292e37da 170 /**
hudakz 5:0ab8292e37da 171 * @brief
hudakz 5:0ab8292e37da 172 * @note
hudakz 5:0ab8292e37da 173 * @param
hudakz 5:0ab8292e37da 174 * @retval
hudakz 5:0ab8292e37da 175 */
hudakz 7:f5e11393836d 176 int main(void)
hudakz 7:f5e11393836d 177 {
hudakz 7:f5e11393836d 178 #if defined(TARGET_STM32F103C8T6)
hudakz 7:f5e11393836d 179 confSysClock(); //Configure system clock (72MHz HSE clock, 48MHz USB clock)
hudakz 7:f5e11393836d 180 #endif
hudakz 6:b38a3b476a45 181 #if defined(DHCP)
hudakz 6:b38a3b476a45 182 pc.printf("Searching for DHCP server..\r\n");
hudakz 8:3bd85b731cca 183 if(uIPEthernet.begin(MY_MAC) != 1) {
hudakz 6:b38a3b476a45 184 pc.printf("No DHCP server found.\r\n");
hudakz 6:b38a3b476a45 185 pc.printf("Exiting application.\r\n");
hudakz 6:b38a3b476a45 186 return 0;
hudakz 6:b38a3b476a45 187 }
hudakz 6:b38a3b476a45 188 pc.printf("DHCP server found.\r\n");
hudakz 6:b38a3b476a45 189 #else
hudakz 6:b38a3b476a45 190 // IP address must be unique and compatible with your network.
hudakz 6:b38a3b476a45 191 const IPAddress MY_IP(192, 168, 1, 181); // Change as appropriate.
hudakz 8:3bd85b731cca 192 uIPEthernet.begin(MY_MAC, MY_IP);
hudakz 6:b38a3b476a45 193 #endif
hudakz 8:3bd85b731cca 194 IPAddress localIP = uIPEthernet.localIP();
hudakz 9:6f63abd61de8 195 pc.printf("Type %s/secret/ into your web browser and hit ENTER\r\n", localIP.toString());
hudakz 8:3bd85b731cca 196 myServer.begin();
hudakz 0:68a0003c4cb8 197 while(1) {
hudakz 5:0ab8292e37da 198 EthernetClient client = myServer.available();
hudakz 5:0ab8292e37da 199 if(client) {
hudakz 5:0ab8292e37da 200 size_t size = client.available();
hudakz 0:68a0003c4cb8 201 if(size > 0) {
hudakz 5:0ab8292e37da 202 uint8_t* buf = (uint8_t*)malloc(size);
hudakz 0:68a0003c4cb8 203 size = client.read(buf, size);
hudakz 5:0ab8292e37da 204 string received((char*)buf);
hudakz 0:68a0003c4cb8 205 free(buf);
hudakz 7:f5e11393836d 206
hudakz 0:68a0003c4cb8 207 if(received.substr(0, 3) != "GET") {
hudakz 0:68a0003c4cb8 208 httpHeader = HTTP_OK;
hudakz 0:68a0003c4cb8 209 httpContent = "<h1>200 OK</h1>";
hudakz 6:b38a3b476a45 210 sendHTTP(client, httpHeader, httpContent);
hudakz 0:68a0003c4cb8 211 continue;
hudakz 0:68a0003c4cb8 212 }
hudakz 0:68a0003c4cb8 213
hudakz 0:68a0003c4cb8 214 if(received.substr(0, 6) == "GET / ") {
hudakz 0:68a0003c4cb8 215 httpHeader = HTTP_OK;
hudakz 0:68a0003c4cb8 216 httpContent = "<p>Usage: http://host_or_ip/password</p>\r\n";
hudakz 6:b38a3b476a45 217 sendHTTP(client, httpHeader, httpContent);
hudakz 0:68a0003c4cb8 218 continue;
hudakz 0:68a0003c4cb8 219 }
hudakz 0:68a0003c4cb8 220
hudakz 6:b38a3b476a45 221 int cmd = analyseURL(received);
hudakz 0:68a0003c4cb8 222
hudakz 0:68a0003c4cb8 223 if(cmd == -2) {
hudakz 0:68a0003c4cb8 224 // redirect to the right base url
hudakz 0:68a0003c4cb8 225 httpHeader = MOVED_PERM;
hudakz 6:b38a3b476a45 226 sendHTTP(client, httpHeader, movedPermanently(1));
hudakz 0:68a0003c4cb8 227 continue;
hudakz 0:68a0003c4cb8 228 }
hudakz 0:68a0003c4cb8 229
hudakz 0:68a0003c4cb8 230 if(cmd == -1) {
hudakz 0:68a0003c4cb8 231 httpHeader = UNAUTHORIZED;
hudakz 0:68a0003c4cb8 232 httpContent = "<h1>401 Unauthorized</h1>";
hudakz 6:b38a3b476a45 233 sendHTTP(client, httpHeader, httpContent);
hudakz 0:68a0003c4cb8 234 continue;
hudakz 0:68a0003c4cb8 235 }
hudakz 0:68a0003c4cb8 236
hudakz 6:b38a3b476a45 237 if(cmd == ON) {
hudakz 6:b38a3b476a45 238 sw = ON; // turn the switch on
hudakz 0:68a0003c4cb8 239 }
hudakz 0:68a0003c4cb8 240
hudakz 6:b38a3b476a45 241 if(cmd == OFF) {
hudakz 6:b38a3b476a45 242 sw = OFF; // turn the switch off
hudakz 0:68a0003c4cb8 243 }
hudakz 0:68a0003c4cb8 244
hudakz 0:68a0003c4cb8 245 httpHeader = HTTP_OK;
hudakz 6:b38a3b476a45 246 sendHTTP(client, httpHeader, showWebPage(sw));
hudakz 0:68a0003c4cb8 247 }
hudakz 0:68a0003c4cb8 248 }
hudakz 0:68a0003c4cb8 249 }
hudakz 0:68a0003c4cb8 250 }