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@6:b38a3b476a45, 2016-08-28 (annotated)

Committer:
hudakz
Date:
Sun Aug 28 11:47:29 2016 +0000
Revision:
6:b38a3b476a45
Parent:
5:0ab8292e37da
Child:
7:df33cd7ec9de
Wrong SPI pin assignment fixed. Added support for STM32F103C8T6 boards.

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 6:b38a3b476a45 8
hudakz 6:b38a3b476a45 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 6:b38a3b476a45 12 #define LED_PIN PC_13
hudakz 6:b38a3b476a45 13 const int OFF = 1;
hudakz 6:b38a3b476a45 14 const int ON = 0;
hudakz 6:b38a3b476a45 15 #else
hudakz 6:b38a3b476a45 16 #define LED_PIN LED1
hudakz 6:b38a3b476a45 17 const int OFF = 0;
hudakz 6:b38a3b476a45 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 6:b38a3b476a45 29 Serial pc(USBTX, USBRX);
hudakz 6:b38a3b476a45 30
hudakz 6:b38a3b476a45 31 #define DHCP 1 // if you'd like to use static IP address comment out this line
hudakz 6:b38a3b476a45 32
hudakz 0:68a0003c4cb8 33 // UIPEthernet is the name of a global instance of UIPEthernetClass.
hudakz 0:68a0003c4cb8 34 // Do not change the name! It is used within the UIPEthernet library.
hudakz 0:68a0003c4cb8 35 #if defined(TARGET_LPC1768)
hudakz 5:0ab8292e37da 36 UIPEthernetClass UIPEthernet(p11, p12, p13, p8); // mosi, miso, sck, cs
hudakz 0:68a0003c4cb8 37 #elif defined(TARGET_LPC1114)
hudakz 5:0ab8292e37da 38 UIPEthernetClass UIPEthernet(dp2, dp1, dp6, dp25); // mosi, miso, sck, cs
hudakz 0:68a0003c4cb8 39 #elif defined(TARGET_LPC11U68)
hudakz 5:0ab8292e37da 40 UIPEthernetClass UIPEthernet(P0_9, P0_8, P1_29, P0_2); // mosi, miso, sck, cs
hudakz 6:b38a3b476a45 41 #elif defined(TARGET_NUCLEO_F103RB) || defined(TARGET_NUCLEO_L152RE) || defined(TARGET_NUCLEO_F030R8) \
hudakz 6:b38a3b476a45 42 || defined(TARGET_NUCLEO_F401RE) || defined(TARGET_NUCLEO_F302R8) || defined(TARGET_NUCLEO_L053R8) \
hudakz 6:b38a3b476a45 43 || defined(TARGET_NUCLEO_F411RE) || defined(TARGET_NUCLEO_F334R8) || defined(TARGET_NUCLEO_F072RB) \
hudakz 6:b38a3b476a45 44 || defined(TARGET_NUCLEO_F091RC) || defined(TARGET_NUCLEO_F303RE) || defined(TARGET_NUCLEO_F070RB)
hudakz 6:b38a3b476a45 45 UIPEthernetClass UIPEthernet(D4, D5, D3, D2); // mosi, miso, sck, cs
hudakz 4:d34811deedab 46
hudakz 5:0ab8292e37da 47 // If your board/plaform is not present yet then uncomment
hudakz 5:0ab8292e37da 48 // the following two lines and replace TARGET_YOUR_BOARD as appropriate.
hudakz 4:d34811deedab 49
hudakz 5:0ab8292e37da 50 //#elif defined(TARGET_YOUR_BOARD)
hudakz 5:0ab8292e37da 51 //UIPEthernetClass UIPEthernet(SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS); // mosi, miso, sck, cs
hudakz 4:d34811deedab 52
hudakz 0:68a0003c4cb8 53 #endif
hudakz 0:68a0003c4cb8 54
hudakz 4:d34811deedab 55 // Note:
hudakz 4:d34811deedab 56 // If it happends that any of the SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS pins collide with LED1 pin
hudakz 5:0ab8292e37da 57 // then either use different SPI port (if available on the board) and change the pin names
hudakz 5:0ab8292e37da 58 // in the constructor UIPEthernet(...) accordingly or instead of using LED1 pin, select
hudakz 5:0ab8292e37da 59 // a free pin (not used by SPI port) and connect to it an external LED which is connected
hudakz 5:0ab8292e37da 60 // to a 220 Ohm resitor that is connected to the groud.
hudakz 4:d34811deedab 61 // In the second case remember to replace LED1 in sw(LED1) constructor (see below).
hudakz 5:0ab8292e37da 62 // MAC number must be unique within the connected network. Modify as appropriate.
hudakz 5:0ab8292e37da 63 const uint8_t MY_MAC[6] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x06 };
hudakz 5:0ab8292e37da 64 const uint16_t MY_PORT = 80; // for HTTP connection
hudakz 5:0ab8292e37da 65 EthernetServer myServer = EthernetServer(MY_PORT);
hudakz 5:0ab8292e37da 66
hudakz 0:68a0003c4cb8 67 // In this example we are turning on/off LED1.
hudakz 6:b38a3b476a45 68 DigitalOut sw(LED_PIN); // Change LED_PIN to a pin of your choice.
hudakz 0:68a0003c4cb8 69
hudakz 5:0ab8292e37da 70 // However, make sure that it does not collide with any of the SPI pins
hudakz 5:0ab8292e37da 71 // already used in the UIPEthernet(...) constructor above!
hudakz 5:0ab8292e37da 72 const string PASSWORD = "secret"; // change as you like
hudakz 5:0ab8292e37da 73 const string HTTP_OK = "HTTP/1.0 200 OK";
hudakz 5:0ab8292e37da 74 const string MOVED_PERM = "HTTP/1.0 301 Moved Permanently\r\nLocation: ";
hudakz 5:0ab8292e37da 75 const string UNAUTHORIZED = "HTTP/1.0 401 Unauthorized";
hudakz 5:0ab8292e37da 76 string httpHeader; // HTTP header
hudakz 5:0ab8292e37da 77 string httpContent; // HTTP content
hudakz 0:68a0003c4cb8 78
hudakz 0:68a0003c4cb8 79 // analyse the url given
hudakz 0:68a0003c4cb8 80 // return values: -1 invalid password
hudakz 0:68a0003c4cb8 81 // -2 no command given but password valid
hudakz 0:68a0003c4cb8 82 // -3 just refresh page
hudakz 0:68a0003c4cb8 83 // 0 switch off
hudakz 0:68a0003c4cb8 84 // 1 switch on
hudakz 0:68a0003c4cb8 85 //
hudakz 0:68a0003c4cb8 86 // The string passed to this function will look like this:
hudakz 0:68a0003c4cb8 87 // GET /password HTTP/1.....
hudakz 0:68a0003c4cb8 88 // GET /password/ HTTP/1.....
hudakz 0:68a0003c4cb8 89 // GET /password/?sw=1 HTTP/1.....
hudakz 0:68a0003c4cb8 90 // GET /password/?sw=0 HTTP/1.....
hudakz 6:b38a3b476a45 91 int8_t analyseURL(string& str) {
hudakz 0:68a0003c4cb8 92 if(str.substr(5, PASSWORD.size()) != PASSWORD)
hudakz 0:68a0003c4cb8 93 return(-1);
hudakz 0:68a0003c4cb8 94
hudakz 0:68a0003c4cb8 95 uint8_t pos = 5 + PASSWORD.size();
hudakz 0:68a0003c4cb8 96
hudakz 0:68a0003c4cb8 97 if(str.substr(pos, 1) == " ")
hudakz 0:68a0003c4cb8 98 return(-2);
hudakz 0:68a0003c4cb8 99
hudakz 0:68a0003c4cb8 100 if(str.substr(pos, 1) != "/")
hudakz 0:68a0003c4cb8 101 return(-1);
hudakz 0:68a0003c4cb8 102
hudakz 0:68a0003c4cb8 103 pos++;
hudakz 0:68a0003c4cb8 104
hudakz 5:0ab8292e37da 105 string cmd(str.substr(pos, 5));
hudakz 0:68a0003c4cb8 106
hudakz 0:68a0003c4cb8 107 if(cmd == "?sw=0")
hudakz 6:b38a3b476a45 108 return(OFF);
hudakz 0:68a0003c4cb8 109
hudakz 0:68a0003c4cb8 110 if(cmd == "?sw=1")
hudakz 6:b38a3b476a45 111 return(ON);
hudakz 0:68a0003c4cb8 112
hudakz 0:68a0003c4cb8 113 return(-3);
hudakz 0:68a0003c4cb8 114 }
hudakz 0:68a0003c4cb8 115
hudakz 5:0ab8292e37da 116 /**
hudakz 5:0ab8292e37da 117 * @brief
hudakz 5:0ab8292e37da 118 * @note
hudakz 5:0ab8292e37da 119 * @param
hudakz 5:0ab8292e37da 120 * @retval
hudakz 5:0ab8292e37da 121 */
hudakz 6:b38a3b476a45 122 string& movedPermanently(uint8_t flag) {
hudakz 0:68a0003c4cb8 123 if(flag == 1)
hudakz 5:0ab8292e37da 124 httpContent = "/" + PASSWORD + "/";
hudakz 0:68a0003c4cb8 125 else
hudakz 0:68a0003c4cb8 126 httpContent = "";
hudakz 0:68a0003c4cb8 127
hudakz 0:68a0003c4cb8 128 httpContent += "<h1>301 Moved Permanently</h1>\r\n";
hudakz 0:68a0003c4cb8 129
hudakz 5:0ab8292e37da 130 return(httpContent);
hudakz 0:68a0003c4cb8 131 }
hudakz 0:68a0003c4cb8 132
hudakz 5:0ab8292e37da 133 /**
hudakz 5:0ab8292e37da 134 * @brief
hudakz 5:0ab8292e37da 135 * @note
hudakz 5:0ab8292e37da 136 * @param
hudakz 5:0ab8292e37da 137 * @retval
hudakz 5:0ab8292e37da 138 */
hudakz 6:b38a3b476a45 139 string& showWebPage(uint8_t status) {
hudakz 0:68a0003c4cb8 140 httpContent = "<h2>Web Switch</h2>\r\n";
hudakz 0:68a0003c4cb8 141
hudakz 6:b38a3b476a45 142 if(status == ON) {
hudakz 6:b38a3b476a45 143 httpContent += "<pre>\r\n <font color=#FF0000>ON </font>";
hudakz 6:b38a3b476a45 144 httpContent += " <a href=\"./?sw=0\">[Turn off]</a>\r\n";
hudakz 5:0ab8292e37da 145 }
hudakz 5:0ab8292e37da 146 else {
hudakz 6:b38a3b476a45 147 httpContent += "<pre>\r\n <font color=#BBBBBB>OFF</font>";
hudakz 6:b38a3b476a45 148 httpContent += " <a href=\"./?sw=1\">[Turn on]</a>\r\n";
hudakz 0:68a0003c4cb8 149 }
hudakz 0:68a0003c4cb8 150
hudakz 6:b38a3b476a45 151 // httpContent += " <a href=\".\">[refresh status]</a>\r\n";
hudakz 0:68a0003c4cb8 152 httpContent += "</pre>\r\n";
hudakz 0:68a0003c4cb8 153 httpContent += "<hr>\r\n";
hudakz 0:68a0003c4cb8 154 return httpContent;
hudakz 0:68a0003c4cb8 155 }
hudakz 0:68a0003c4cb8 156
hudakz 5:0ab8292e37da 157 /**
hudakz 5:0ab8292e37da 158 * @brief
hudakz 5:0ab8292e37da 159 * @note
hudakz 5:0ab8292e37da 160 * @param
hudakz 5:0ab8292e37da 161 * @retval
hudakz 5:0ab8292e37da 162 */
hudakz 6:b38a3b476a45 163 void sendHTTP(EthernetClient& client, string& header, string& content) {
hudakz 5:0ab8292e37da 164 char content_length[5] = { };
hudakz 0:68a0003c4cb8 165
hudakz 2:76f339a1ba9b 166 header += "\r\nContent-Type: text/html\r\n";
hudakz 0:68a0003c4cb8 167 header += "Content-Length: ";
hudakz 0:68a0003c4cb8 168 sprintf(content_length, "%d", content.length());
hudakz 0:68a0003c4cb8 169 header += string(content_length) + "\r\n";
hudakz 0:68a0003c4cb8 170 header += "Pragma: no-cache\r\n";
hudakz 0:68a0003c4cb8 171 header += "Connection: About to close\r\n";
hudakz 0:68a0003c4cb8 172 header += "\r\n";
hudakz 5:0ab8292e37da 173
hudakz 5:0ab8292e37da 174 string webpage = header + content;
hudakz 5:0ab8292e37da 175 client.write((uint8_t*)webpage.c_str(), webpage.length());
hudakz 0:68a0003c4cb8 176 }
hudakz 0:68a0003c4cb8 177
hudakz 5:0ab8292e37da 178 /**
hudakz 5:0ab8292e37da 179 * @brief
hudakz 5:0ab8292e37da 180 * @note
hudakz 5:0ab8292e37da 181 * @param
hudakz 5:0ab8292e37da 182 * @retval
hudakz 5:0ab8292e37da 183 */
hudakz 5:0ab8292e37da 184 int main(void) {
hudakz 6:b38a3b476a45 185 #if defined(DHCP)
hudakz 6:b38a3b476a45 186 pc.printf("Searching for DHCP server..\r\n");
hudakz 6:b38a3b476a45 187 if(UIPEthernet.begin(MY_MAC) != 1) {
hudakz 6:b38a3b476a45 188 pc.printf("No DHCP server found.\r\n");
hudakz 6:b38a3b476a45 189 pc.printf("Exiting application.\r\n");
hudakz 6:b38a3b476a45 190 return 0;
hudakz 6:b38a3b476a45 191 }
hudakz 6:b38a3b476a45 192 pc.printf("DHCP server found.\r\n");
hudakz 6:b38a3b476a45 193 #else
hudakz 6:b38a3b476a45 194 // IP address must be unique and compatible with your network.
hudakz 6:b38a3b476a45 195 const IPAddress MY_IP(192, 168, 1, 181); // Change as appropriate.
hudakz 5:0ab8292e37da 196 UIPEthernet.begin(MY_MAC, MY_IP);
hudakz 6:b38a3b476a45 197 #endif
hudakz 6:b38a3b476a45 198 IPAddress localIP = UIPEthernet.localIP();
hudakz 6:b38a3b476a45 199 pc.printf("Type ");
hudakz 6:b38a3b476a45 200 for(uint8_t i = 0; i < 3; i++)
hudakz 6:b38a3b476a45 201 pc.printf("%d.", localIP[i]);
hudakz 6:b38a3b476a45 202 pc.printf("%d/secret/ into your web browser and hit ENTER\r\n", localIP[3]);
hudakz 0:68a0003c4cb8 203 myServer.begin();
hudakz 0:68a0003c4cb8 204 while(1) {
hudakz 5:0ab8292e37da 205 EthernetClient client = myServer.available();
hudakz 5:0ab8292e37da 206 if(client) {
hudakz 5:0ab8292e37da 207 size_t size = client.available();
hudakz 0:68a0003c4cb8 208 if(size > 0) {
hudakz 5:0ab8292e37da 209 uint8_t* buf = (uint8_t*)malloc(size);
hudakz 0:68a0003c4cb8 210 size = client.read(buf, size);
hudakz 5:0ab8292e37da 211 string received((char*)buf);
hudakz 0:68a0003c4cb8 212 free(buf);
hudakz 5:0ab8292e37da 213
hudakz 0:68a0003c4cb8 214 if(received.substr(0, 3) != "GET") {
hudakz 0:68a0003c4cb8 215 httpHeader = HTTP_OK;
hudakz 0:68a0003c4cb8 216 httpContent = "<h1>200 OK</h1>";
hudakz 6:b38a3b476a45 217 sendHTTP(client, httpHeader, httpContent);
hudakz 0:68a0003c4cb8 218 continue;
hudakz 0:68a0003c4cb8 219 }
hudakz 0:68a0003c4cb8 220
hudakz 0:68a0003c4cb8 221 if(received.substr(0, 6) == "GET / ") {
hudakz 0:68a0003c4cb8 222 httpHeader = HTTP_OK;
hudakz 0:68a0003c4cb8 223 httpContent = "<p>Usage: http://host_or_ip/password</p>\r\n";
hudakz 6:b38a3b476a45 224 sendHTTP(client, httpHeader, httpContent);
hudakz 0:68a0003c4cb8 225 continue;
hudakz 0:68a0003c4cb8 226 }
hudakz 0:68a0003c4cb8 227
hudakz 6:b38a3b476a45 228 int cmd = analyseURL(received);
hudakz 0:68a0003c4cb8 229
hudakz 0:68a0003c4cb8 230 if(cmd == -2) {
hudakz 0:68a0003c4cb8 231 // redirect to the right base url
hudakz 0:68a0003c4cb8 232 httpHeader = MOVED_PERM;
hudakz 6:b38a3b476a45 233 sendHTTP(client, httpHeader, movedPermanently(1));
hudakz 0:68a0003c4cb8 234 continue;
hudakz 0:68a0003c4cb8 235 }
hudakz 0:68a0003c4cb8 236
hudakz 0:68a0003c4cb8 237 if(cmd == -1) {
hudakz 0:68a0003c4cb8 238 httpHeader = UNAUTHORIZED;
hudakz 0:68a0003c4cb8 239 httpContent = "<h1>401 Unauthorized</h1>";
hudakz 6:b38a3b476a45 240 sendHTTP(client, httpHeader, httpContent);
hudakz 0:68a0003c4cb8 241 continue;
hudakz 0:68a0003c4cb8 242 }
hudakz 0:68a0003c4cb8 243
hudakz 6:b38a3b476a45 244 if(cmd == ON) {
hudakz 6:b38a3b476a45 245 sw = ON; // turn the switch on
hudakz 0:68a0003c4cb8 246 }
hudakz 0:68a0003c4cb8 247
hudakz 6:b38a3b476a45 248 if(cmd == OFF) {
hudakz 6:b38a3b476a45 249 sw = OFF; // turn the switch off
hudakz 0:68a0003c4cb8 250 }
hudakz 0:68a0003c4cb8 251
hudakz 0:68a0003c4cb8 252 httpHeader = HTTP_OK;
hudakz 6:b38a3b476a45 253 sendHTTP(client, httpHeader, showWebPage(sw));
hudakz 0:68a0003c4cb8 254 }
hudakz 0:68a0003c4cb8 255 }
hudakz 0:68a0003c4cb8 256 }
hudakz 0:68a0003c4cb8 257 }