Srinivas Nistala / Mbed 2 deprecated TELNET_TEST

TELNET TO UART using STM32F103C8 generic board and ENC28J60. It is a very initial version with just for test program. Uses UIPEthernet Library courtesy of Zoltan hudak and Norbert Truchsess. Thanks

Dependencies:   UIPEthernet mbed-STM32F103C8T6 mbed Adafruit_GFX

Fork of WebSwitch_ENC28J60 by Zoltan Hudak

main.cpp@5:0ab8292e37da, 2015-03-16 (annotated)

Committer:
hudakz
Date:
Mon Mar 16 09:43:13 2015 +0000
Revision:
5:0ab8292e37da
Parent:
4:d34811deedab
Child:
6:b38a3b476a45
Updated

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hudakz 5:0ab8292e37da 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 0:68a0003c4cb8 8 #include <mbed.h>
hudakz 0:68a0003c4cb8 9 #include <UIPEthernet.h>
hudakz 0:68a0003c4cb8 10 #include <UIPServer.h>
hudakz 0:68a0003c4cb8 11 #include <UIPClient.h>
hudakz 0:68a0003c4cb8 12 #include <string>
hudakz 0:68a0003c4cb8 13
hudakz 5:0ab8292e37da 14 using namespace std;
hudakz 0:68a0003c4cb8 15
hudakz 0:68a0003c4cb8 16 // UIPEthernet is the name of a global instance of UIPEthernetClass.
hudakz 0:68a0003c4cb8 17 // Do not change the name! It is used within the UIPEthernet library.
hudakz 0:68a0003c4cb8 18 #if defined(TARGET_LPC1768)
hudakz 5:0ab8292e37da 19 UIPEthernetClass UIPEthernet(p11, p12, p13, p8); // mosi, miso, sck, cs
hudakz 0:68a0003c4cb8 20 #elif defined(TARGET_LPC1114)
hudakz 5:0ab8292e37da 21 UIPEthernetClass UIPEthernet(dp2, dp1, dp6, dp25); // mosi, miso, sck, cs
hudakz 0:68a0003c4cb8 22 #elif defined(TARGET_LPC11U68)
hudakz 5:0ab8292e37da 23 UIPEthernetClass UIPEthernet(P0_9, P0_8, P1_29, P0_2); // mosi, miso, sck, cs
hudakz 5:0ab8292e37da 24 #elif defined(TARGET_NUCLEO_F103RB)
hudakz 5:0ab8292e37da 25 UIPEthernetClass UIPEthernet(PB_5, PB_4, PB_3, PB_6); // mosi, miso, sck, cs
hudakz 5:0ab8292e37da 26 #elif defined(TARGET_NUCLEO_F401RE)
hudakz 5:0ab8292e37da 27 UIPEthernetClass UIPEthernet(PB_5, PB_4, PB_3, PB_6); // mosi, miso, sck, cs
hudakz 5:0ab8292e37da 28 #elif defined(TARGET_NUCLEO_F411RE)
hudakz 5:0ab8292e37da 29 UIPEthernetClass UIPEthernet(PB_5, PB_4, PB_3, PB_6); // mosi, miso, sck, cs
hudakz 4:d34811deedab 30
hudakz 5:0ab8292e37da 31 // If your board/plaform is not present yet then uncomment
hudakz 5:0ab8292e37da 32 // the following two lines and replace TARGET_YOUR_BOARD as appropriate.
hudakz 4:d34811deedab 33
hudakz 5:0ab8292e37da 34 //#elif defined(TARGET_YOUR_BOARD)
hudakz 5:0ab8292e37da 35 //UIPEthernetClass UIPEthernet(SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS); // mosi, miso, sck, cs
hudakz 4:d34811deedab 36
hudakz 0:68a0003c4cb8 37 #endif
hudakz 0:68a0003c4cb8 38
hudakz 4:d34811deedab 39 // Note:
hudakz 4:d34811deedab 40 // If it happends that any of the SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS pins collide with LED1 pin
hudakz 5:0ab8292e37da 41 // then either use different SPI port (if available on the board) and change the pin names
hudakz 5:0ab8292e37da 42 // in the constructor UIPEthernet(...) accordingly or instead of using LED1 pin, select
hudakz 5:0ab8292e37da 43 // a free pin (not used by SPI port) and connect to it an external LED which is connected
hudakz 5:0ab8292e37da 44 // to a 220 Ohm resitor that is connected to the groud.
hudakz 4:d34811deedab 45 // In the second case remember to replace LED1 in sw(LED1) constructor (see below).
hudakz 5:0ab8292e37da 46 // MAC number must be unique within the connected network. Modify as appropriate.
hudakz 5:0ab8292e37da 47 const uint8_t MY_MAC[6] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x06 };
hudakz 4:d34811deedab 48
hudakz 0:68a0003c4cb8 49 // IP address must be also unique and compatible with your network. Change as appropriate.
hudakz 5:0ab8292e37da 50 const IPAddress MY_IP(192, 168, 1, 181);
hudakz 5:0ab8292e37da 51 const uint16_t MY_PORT = 80; // for HTTP connection
hudakz 5:0ab8292e37da 52 EthernetServer myServer = EthernetServer(MY_PORT);
hudakz 5:0ab8292e37da 53
hudakz 0:68a0003c4cb8 54 // In this example we are turning on/off LED1.
hudakz 5:0ab8292e37da 55 DigitalOut sw(LED1); // Change LED1 to a pin of your choice.
hudakz 0:68a0003c4cb8 56
hudakz 5:0ab8292e37da 57 // However, make sure that it does not collide with any of the SPI pins
hudakz 5:0ab8292e37da 58 // already used in the UIPEthernet(...) constructor above!
hudakz 5:0ab8292e37da 59 const string PASSWORD = "secret"; // change as you like
hudakz 5:0ab8292e37da 60 const string HTTP_OK = "HTTP/1.0 200 OK";
hudakz 5:0ab8292e37da 61 const string MOVED_PERM = "HTTP/1.0 301 Moved Permanently\r\nLocation: ";
hudakz 5:0ab8292e37da 62 const string UNAUTHORIZED = "HTTP/1.0 401 Unauthorized";
hudakz 5:0ab8292e37da 63 string httpHeader; // HTTP header
hudakz 5:0ab8292e37da 64 string httpContent; // HTTP content
hudakz 0:68a0003c4cb8 65
hudakz 0:68a0003c4cb8 66 // analyse the url given
hudakz 0:68a0003c4cb8 67 // return values: -1 invalid password
hudakz 0:68a0003c4cb8 68 // -2 no command given but password valid
hudakz 0:68a0003c4cb8 69 // -3 just refresh page
hudakz 0:68a0003c4cb8 70 // 0 switch off
hudakz 0:68a0003c4cb8 71 // 1 switch on
hudakz 0:68a0003c4cb8 72 //
hudakz 0:68a0003c4cb8 73 // The string passed to this function will look like this:
hudakz 0:68a0003c4cb8 74 // GET /password HTTP/1.....
hudakz 0:68a0003c4cb8 75 // GET /password/ HTTP/1.....
hudakz 0:68a0003c4cb8 76 // GET /password/?sw=1 HTTP/1.....
hudakz 0:68a0003c4cb8 77 // GET /password/?sw=0 HTTP/1.....
hudakz 5:0ab8292e37da 78 int8_t analyse_get_url(string& str) {
hudakz 0:68a0003c4cb8 79 if(str.substr(5, PASSWORD.size()) != PASSWORD)
hudakz 0:68a0003c4cb8 80 return(-1);
hudakz 0:68a0003c4cb8 81
hudakz 0:68a0003c4cb8 82 uint8_t pos = 5 + PASSWORD.size();
hudakz 0:68a0003c4cb8 83
hudakz 0:68a0003c4cb8 84 if(str.substr(pos, 1) == " ")
hudakz 0:68a0003c4cb8 85 return(-2);
hudakz 0:68a0003c4cb8 86
hudakz 0:68a0003c4cb8 87 if(str.substr(pos, 1) != "/")
hudakz 0:68a0003c4cb8 88 return(-1);
hudakz 0:68a0003c4cb8 89
hudakz 0:68a0003c4cb8 90 pos++;
hudakz 0:68a0003c4cb8 91
hudakz 5:0ab8292e37da 92 string cmd(str.substr(pos, 5));
hudakz 0:68a0003c4cb8 93
hudakz 0:68a0003c4cb8 94 if(cmd == "?sw=0")
hudakz 0:68a0003c4cb8 95 return(0);
hudakz 0:68a0003c4cb8 96
hudakz 0:68a0003c4cb8 97 if(cmd == "?sw=1")
hudakz 0:68a0003c4cb8 98 return(1);
hudakz 0:68a0003c4cb8 99
hudakz 0:68a0003c4cb8 100 return(-3);
hudakz 0:68a0003c4cb8 101 }
hudakz 0:68a0003c4cb8 102
hudakz 5:0ab8292e37da 103 /**
hudakz 5:0ab8292e37da 104 * @brief
hudakz 5:0ab8292e37da 105 * @note
hudakz 5:0ab8292e37da 106 * @param
hudakz 5:0ab8292e37da 107 * @retval
hudakz 5:0ab8292e37da 108 */
hudakz 5:0ab8292e37da 109 string& moved_perm(uint8_t flag) {
hudakz 0:68a0003c4cb8 110 if(flag == 1)
hudakz 5:0ab8292e37da 111 httpContent = "/" + PASSWORD + "/";
hudakz 0:68a0003c4cb8 112 else
hudakz 0:68a0003c4cb8 113 httpContent = "";
hudakz 0:68a0003c4cb8 114
hudakz 0:68a0003c4cb8 115 httpContent += "<h1>301 Moved Permanently</h1>\r\n";
hudakz 0:68a0003c4cb8 116
hudakz 5:0ab8292e37da 117 return(httpContent);
hudakz 0:68a0003c4cb8 118 }
hudakz 0:68a0003c4cb8 119
hudakz 5:0ab8292e37da 120 /**
hudakz 5:0ab8292e37da 121 * @brief
hudakz 5:0ab8292e37da 122 * @note
hudakz 5:0ab8292e37da 123 * @param
hudakz 5:0ab8292e37da 124 * @retval
hudakz 5:0ab8292e37da 125 */
hudakz 5:0ab8292e37da 126 string& view(uint8_t status) {
hudakz 0:68a0003c4cb8 127 httpContent = "<h2>Web Switch</h2>\r\n";
hudakz 0:68a0003c4cb8 128
hudakz 0:68a0003c4cb8 129 if(status == 1) {
hudakz 0:68a0003c4cb8 130 httpContent += "<pre>\r\n <font color=#FF0000>ON</font>";
hudakz 0:68a0003c4cb8 131 httpContent += " <a href=\"./?sw=0\">[switch off]</a>\r\n";
hudakz 5:0ab8292e37da 132 }
hudakz 5:0ab8292e37da 133 else {
hudakz 0:68a0003c4cb8 134 httpContent += "<pre>\r\n <font color=#00FF00>OFF</font>";
hudakz 0:68a0003c4cb8 135 httpContent += " <a href=\"./?sw=1\">[switch on]</a>\r\n";
hudakz 0:68a0003c4cb8 136 }
hudakz 0:68a0003c4cb8 137
hudakz 0:68a0003c4cb8 138 httpContent += " <a href=\".\">[refresh status]</a>\r\n";
hudakz 0:68a0003c4cb8 139 httpContent += "</pre>\r\n";
hudakz 0:68a0003c4cb8 140 httpContent += "<hr>\r\n";
hudakz 0:68a0003c4cb8 141 return httpContent;
hudakz 0:68a0003c4cb8 142 }
hudakz 0:68a0003c4cb8 143
hudakz 5:0ab8292e37da 144 /**
hudakz 5:0ab8292e37da 145 * @brief
hudakz 5:0ab8292e37da 146 * @note
hudakz 5:0ab8292e37da 147 * @param
hudakz 5:0ab8292e37da 148 * @retval
hudakz 5:0ab8292e37da 149 */
hudakz 5:0ab8292e37da 150 void http_send(EthernetClient& client, string& header, string& content) {
hudakz 5:0ab8292e37da 151 char content_length[5] = { };
hudakz 0:68a0003c4cb8 152
hudakz 2:76f339a1ba9b 153 header += "\r\nContent-Type: text/html\r\n";
hudakz 0:68a0003c4cb8 154 header += "Content-Length: ";
hudakz 0:68a0003c4cb8 155 sprintf(content_length, "%d", content.length());
hudakz 0:68a0003c4cb8 156 header += string(content_length) + "\r\n";
hudakz 0:68a0003c4cb8 157 header += "Pragma: no-cache\r\n";
hudakz 0:68a0003c4cb8 158 header += "Connection: About to close\r\n";
hudakz 0:68a0003c4cb8 159 header += "\r\n";
hudakz 5:0ab8292e37da 160
hudakz 5:0ab8292e37da 161 string webpage = header + content;
hudakz 5:0ab8292e37da 162 client.write((uint8_t*)webpage.c_str(), webpage.length());
hudakz 0:68a0003c4cb8 163 }
hudakz 0:68a0003c4cb8 164
hudakz 5:0ab8292e37da 165 /**
hudakz 5:0ab8292e37da 166 * @brief
hudakz 5:0ab8292e37da 167 * @note
hudakz 5:0ab8292e37da 168 * @param
hudakz 5:0ab8292e37da 169 * @retval
hudakz 5:0ab8292e37da 170 */
hudakz 5:0ab8292e37da 171 int main(void) {
hudakz 5:0ab8292e37da 172 UIPEthernet.begin(MY_MAC, MY_IP);
hudakz 0:68a0003c4cb8 173 myServer.begin();
hudakz 0:68a0003c4cb8 174 while(1) {
hudakz 5:0ab8292e37da 175 EthernetClient client = myServer.available();
hudakz 5:0ab8292e37da 176 if(client) {
hudakz 5:0ab8292e37da 177 size_t size = client.available();
hudakz 0:68a0003c4cb8 178 if(size > 0) {
hudakz 5:0ab8292e37da 179 uint8_t* buf = (uint8_t*)malloc(size);
hudakz 0:68a0003c4cb8 180 size = client.read(buf, size);
hudakz 5:0ab8292e37da 181 string received((char*)buf);
hudakz 0:68a0003c4cb8 182 free(buf);
hudakz 5:0ab8292e37da 183
hudakz 0:68a0003c4cb8 184 if(received.substr(0, 3) != "GET") {
hudakz 0:68a0003c4cb8 185 httpHeader = HTTP_OK;
hudakz 0:68a0003c4cb8 186 httpContent = "<h1>200 OK</h1>";
hudakz 0:68a0003c4cb8 187 http_send(client, httpHeader, httpContent);
hudakz 0:68a0003c4cb8 188 continue;
hudakz 0:68a0003c4cb8 189 }
hudakz 0:68a0003c4cb8 190
hudakz 0:68a0003c4cb8 191 if(received.substr(0, 6) == "GET / ") {
hudakz 0:68a0003c4cb8 192 httpHeader = HTTP_OK;
hudakz 0:68a0003c4cb8 193 httpContent = "<p>Usage: http://host_or_ip/password</p>\r\n";
hudakz 0:68a0003c4cb8 194 http_send(client, httpHeader, httpContent);
hudakz 0:68a0003c4cb8 195 continue;
hudakz 0:68a0003c4cb8 196 }
hudakz 0:68a0003c4cb8 197
hudakz 0:68a0003c4cb8 198 int cmd = analyse_get_url(received);
hudakz 0:68a0003c4cb8 199
hudakz 0:68a0003c4cb8 200 if(cmd == -2) {
hudakz 0:68a0003c4cb8 201 // redirect to the right base url
hudakz 0:68a0003c4cb8 202 httpHeader = MOVED_PERM;
hudakz 0:68a0003c4cb8 203 http_send(client, httpHeader, moved_perm(1));
hudakz 0:68a0003c4cb8 204 continue;
hudakz 0:68a0003c4cb8 205 }
hudakz 0:68a0003c4cb8 206
hudakz 0:68a0003c4cb8 207 if(cmd == -1) {
hudakz 0:68a0003c4cb8 208 httpHeader = UNAUTHORIZED;
hudakz 0:68a0003c4cb8 209 httpContent = "<h1>401 Unauthorized</h1>";
hudakz 0:68a0003c4cb8 210 http_send(client, httpHeader, httpContent);
hudakz 0:68a0003c4cb8 211 continue;
hudakz 0:68a0003c4cb8 212 }
hudakz 0:68a0003c4cb8 213
hudakz 0:68a0003c4cb8 214 if(cmd == 1) {
hudakz 5:0ab8292e37da 215 sw = 1; // switch on
hudakz 0:68a0003c4cb8 216 }
hudakz 0:68a0003c4cb8 217
hudakz 0:68a0003c4cb8 218 if(cmd == 0) {
hudakz 5:0ab8292e37da 219 sw = 0; // switch off
hudakz 0:68a0003c4cb8 220 }
hudakz 0:68a0003c4cb8 221
hudakz 0:68a0003c4cb8 222 httpHeader = HTTP_OK;
hudakz 5:0ab8292e37da 223 http_send(client, httpHeader, view(sw));
hudakz 0:68a0003c4cb8 224 }
hudakz 0:68a0003c4cb8 225 }
hudakz 0:68a0003c4cb8 226 }
hudakz 0:68a0003c4cb8 227 }