KIM YOUNG SEONG / Mbed OS 429_adc_network_adc_16_channel

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Dependencies:   MQTT

main.cpp@12:138b2b3d041a, 2020-10-27 (annotated)

Committer:
hudakz
Date:
Tue Oct 27 16:43:25 2020 +0000
Revision:
12:138b2b3d041a
Parent:
11:101be77aa5db
Child:
13:f56c6e844cc3
Tiny HTTP server switching LED1 (or other DigitalOut) on/off.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hudakz 0:e455fdb56bc8 1 #include "mbed.h"
hudakz 0:e455fdb56bc8 2 #include "EthernetInterface.h"
hudakz 0:e455fdb56bc8 3 #include "TCPSocket.h"
hudakz 0:e455fdb56bc8 4 #include <stdio.h>
hudakz 0:e455fdb56bc8 5 #include <string>
hudakz 9:161bed13b17e 6 using namespace std;
hudakz 9:161bed13b17e 7
hudakz 9:161bed13b17e 8 #define IP "192.168.1.181"
hudakz 9:161bed13b17e 9 #define GATEWAY "192.168.1.1"
hudakz 9:161bed13b17e 10 #define NETMASK "255.255.255.0"
hudakz 11:101be77aa5db 11
hudakz 9:161bed13b17e 12 #define PORT 80
hudakz 11:101be77aa5db 13 /* */
hudakz 8:47b0cb4b5b7d 14 EthernetInterface* net;
hudakz 9:161bed13b17e 15 TCPSocket server;
hudakz 11:101be77aa5db 16 TCPSocket* client;
hudakz 11:101be77aa5db 17 char httpBuf[1500];
hudakz 11:101be77aa5db 18 char httpHeader[256];
hudakz 0:e455fdb56bc8 19 const int OFF = 0;
hudakz 0:e455fdb56bc8 20 const int ON = 1;
hudakz 11:101be77aa5db 21 const char PASSWORD[] = "secret"; // Change as you like
hudakz 11:101be77aa5db 22 DigitalOut output(LED1);
hudakz 9:161bed13b17e 23 float roomTemp = 21.8; // A temperature sensor output
hudakz 9:161bed13b17e 24
hudakz 2:33e8bb5615a6 25 /**
hudakz 2:33e8bb5615a6 26 * @brief Analyses the received URL
hudakz 2:33e8bb5615a6 27 * @note The string passed to this function will look like this:
hudakz 2:33e8bb5615a6 28 * GET /password HTTP/1.....
hudakz 2:33e8bb5615a6 29 * GET /password/ HTTP/1.....
hudakz 2:33e8bb5615a6 30 * GET /password/?sw=1 HTTP/1.....
hudakz 2:33e8bb5615a6 31 * GET /password/?sw=0 HTTP/1.....
hudakz 2:33e8bb5615a6 32 * @param url URL string
hudakz 11:101be77aa5db 33 * @retval -1 invalid password
hudakz 2:33e8bb5615a6 34 * -2 no command given but password valid
hudakz 11:101be77aa5db 35 * -3 just refresh page
hudakz 2:33e8bb5615a6 36 * 0 switch off
hudakz 2:33e8bb5615a6 37 * 1 switch on
hudakz 2:33e8bb5615a6 38 */
hudakz 11:101be77aa5db 39 int8_t analyseURL(char* url)
hudakz 9:161bed13b17e 40 {
hudakz 11:101be77aa5db 41 if (strlen(url) < (5 + strlen(PASSWORD) + 1))
hudakz 9:161bed13b17e 42 return(-1);
hudakz 9:161bed13b17e 43
hudakz 11:101be77aa5db 44 //if (url.substr(5, PASSWORD.size()) != PASSWORD)
hudakz 11:101be77aa5db 45 if (strncmp(url + 5, PASSWORD, strlen(PASSWORD)) != 0)
hudakz 0:e455fdb56bc8 46 return(-1);
hudakz 9:161bed13b17e 47
hudakz 11:101be77aa5db 48 uint8_t pos = 5 + strlen(PASSWORD);
hudakz 9:161bed13b17e 49
hudakz 11:101be77aa5db 50 //if (url.substr(pos, 1) != "/")
hudakz 11:101be77aa5db 51
hudakz 11:101be77aa5db 52 if (*(url + pos) != '/')
hudakz 9:161bed13b17e 53 return(-1);
hudakz 9:161bed13b17e 54
hudakz 11:101be77aa5db 55 //if (url.substr(pos++, 1) == " ")
hudakz 11:101be77aa5db 56 if (*(url + pos++) == ' ')
hudakz 0:e455fdb56bc8 57 return(-2);
hudakz 9:161bed13b17e 58
hudakz 11:101be77aa5db 59 //string cmd(url.substr(pos, 5));
hudakz 11:101be77aa5db 60 *(url + pos + 5) = '\0'; // terminate the cmd string
hudakz 11:101be77aa5db 61 char* cmd = ((url + pos));
hudakz 11:101be77aa5db 62 if (strcmp(cmd, "?sw=0") == 0)
hudakz 2:33e8bb5615a6 63 return(0);
hudakz 11:101be77aa5db 64 if (strcmp(cmd, "?sw=1") == 0)
hudakz 2:33e8bb5615a6 65 return(1);
hudakz 0:e455fdb56bc8 66 return(-3);
hudakz 0:e455fdb56bc8 67 }
hudakz 9:161bed13b17e 68
hudakz 0:e455fdb56bc8 69 /**
hudakz 0:e455fdb56bc8 70 * @brief
hudakz 0:e455fdb56bc8 71 * @note
hudakz 0:e455fdb56bc8 72 * @param
hudakz 0:e455fdb56bc8 73 * @retval
hudakz 0:e455fdb56bc8 74 */
hudakz 11:101be77aa5db 75 char* movedPermanently(uint8_t flag)
hudakz 9:161bed13b17e 76 {
hudakz 11:101be77aa5db 77 memset(httpBuf, 0, sizeof(httpBuf));
hudakz 11:101be77aa5db 78 if (flag == 1) {
hudakz 11:101be77aa5db 79 strcpy(httpBuf, "/");
hudakz 11:101be77aa5db 80 strcat(httpBuf, PASSWORD);
hudakz 11:101be77aa5db 81 strcat(httpBuf, "/");
hudakz 11:101be77aa5db 82 }
hudakz 9:161bed13b17e 83
hudakz 11:101be77aa5db 84 strcat(httpBuf, "<h1>301 Moved Permanently</h1>\r\n");
hudakz 11:101be77aa5db 85 return(httpBuf);
hudakz 0:e455fdb56bc8 86 }
hudakz 9:161bed13b17e 87
hudakz 0:e455fdb56bc8 88 /**
hudakz 0:e455fdb56bc8 89 * @brief
hudakz 0:e455fdb56bc8 90 * @note
hudakz 0:e455fdb56bc8 91 * @param
hudakz 0:e455fdb56bc8 92 * @retval
hudakz 0:e455fdb56bc8 93 */
hudakz 11:101be77aa5db 94 char* showWebPage(int status)
hudakz 9:161bed13b17e 95 {
hudakz 11:101be77aa5db 96 char roomTempStr[10] = { };
hudakz 9:161bed13b17e 97
hudakz 2:33e8bb5615a6 98 //roomTemp = ds1820.read();
hudakz 11:101be77aa5db 99
hudakz 2:33e8bb5615a6 100 sprintf(roomTempStr, "%3.1f", roomTemp);
hudakz 11:101be77aa5db 101 memset(httpBuf, 0, sizeof(httpBuf));
hudakz 9:161bed13b17e 102
hudakz 9:161bed13b17e 103 /*$off*/
hudakz 11:101be77aa5db 104 strcat
hudakz 11:101be77aa5db 105 (
hudakz 11:101be77aa5db 106 httpBuf,
hudakz 9:161bed13b17e 107 "<head>"
hudakz 11:101be77aa5db 108 "<meta charset=\"utf-8\">"
hudakz 11:101be77aa5db 109 "<meta name=\"viewport\" content=\" initial-scale=1.0; maximum-scale=1.0; minimum-scale=1.0; user-scalable=0;\"/>"
hudakz 11:101be77aa5db 110 "<title>Smart Home</title>"
hudakz 11:101be77aa5db 111 "<link href='http://fonts.googleapis.com/css?family=Droid+Sans&v1' rel='stylesheet' type='text/css'>"
hudakz 11:101be77aa5db 112 "<style>"
hudakz 11:101be77aa5db 113 ".switch {"
hudakz 11:101be77aa5db 114 "position: relative;"
hudakz 11:101be77aa5db 115 "display: inline-block;"
hudakz 11:101be77aa5db 116 "width: 60px;"
hudakz 11:101be77aa5db 117 "height: 34px;"
hudakz 11:101be77aa5db 118 "}"
hudakz 11:101be77aa5db 119 ".switch input {display:none;}"
hudakz 11:101be77aa5db 120 ".slider {"
hudakz 11:101be77aa5db 121 "position: absolute;"
hudakz 11:101be77aa5db 122 "cursor: pointer;"
hudakz 11:101be77aa5db 123 "top: 0;"
hudakz 11:101be77aa5db 124 "left: 0;"
hudakz 11:101be77aa5db 125 "right: 0;"
hudakz 11:101be77aa5db 126 "bottom: 0;"
hudakz 11:101be77aa5db 127 "border-radius: 34px;"
hudakz 11:101be77aa5db 128 "background-color: #ccc;"
hudakz 11:101be77aa5db 129 "-webkit-transition: .4s;"
hudakz 11:101be77aa5db 130 "transition: .4s;"
hudakz 11:101be77aa5db 131 "}"
hudakz 11:101be77aa5db 132 ".slider:before {"
hudakz 11:101be77aa5db 133 "position: absolute;"
hudakz 11:101be77aa5db 134 "content: \"\";"
hudakz 11:101be77aa5db 135 "height: 26px;"
hudakz 11:101be77aa5db 136 "width: 26px;"
hudakz 11:101be77aa5db 137 "left: 4px;"
hudakz 11:101be77aa5db 138 "bottom: 4px;"
hudakz 11:101be77aa5db 139 "border-radius: 50%;"
hudakz 11:101be77aa5db 140 "background-color: white;"
hudakz 11:101be77aa5db 141 "-webkit-transition: .4s;"
hudakz 11:101be77aa5db 142 "transition: .4s;"
hudakz 11:101be77aa5db 143 "}"
hudakz 11:101be77aa5db 144 "input:checked + .slider {"
hudakz 11:101be77aa5db 145 "background-color: #8ce196;"
hudakz 11:101be77aa5db 146 "}"
hudakz 11:101be77aa5db 147 "input:focus + .slider {"
hudakz 11:101be77aa5db 148 "box-shadow: 0 0 1px #8ce196;"
hudakz 11:101be77aa5db 149 "}"
hudakz 11:101be77aa5db 150 "input:checked + .slider:before {"
hudakz 11:101be77aa5db 151 "-webkit-transform: translateX(26px);"
hudakz 11:101be77aa5db 152 "-ms-transform: translateX(26px);"
hudakz 11:101be77aa5db 153 "transform: translateX(26px);"
hudakz 11:101be77aa5db 154 "}"
hudakz 11:101be77aa5db 155 "</style>"
hudakz 9:161bed13b17e 156 "</head>"
hudakz 9:161bed13b17e 157
hudakz 9:161bed13b17e 158 "<body>"
hudakz 11:101be77aa5db 159 "<h2><a href=\".\" title=\"Click to refresh the page\">Smart Home</a></h2>"
hudakz 11:101be77aa5db 160 "<pre>Temperature:\t"
hudakz 11:101be77aa5db 161 );
hudakz 11:101be77aa5db 162 strcat(httpBuf, roomTempStr);
hudakz 11:101be77aa5db 163 strcat(httpBuf, "&deg;C</pre>");
hudakz 11:101be77aa5db 164 strcat
hudakz 11:101be77aa5db 165 (
hudakz 11:101be77aa5db 166 httpBuf,
hudakz 11:101be77aa5db 167 "<pre>Heating:\t"
hudakz 11:101be77aa5db 168 );
hudakz 0:e455fdb56bc8 169 if(status == ON) {
hudakz 11:101be77aa5db 170 strcat
hudakz 11:101be77aa5db 171 (
hudakz 11:101be77aa5db 172 httpBuf,
hudakz 11:101be77aa5db 173 "<a href=\"./?sw=0\" class=\"switch\"> "
hudakz 11:101be77aa5db 174 "<input type=\"checkbox\" checked>"
hudakz 11:101be77aa5db 175 );
hudakz 0:e455fdb56bc8 176 }
hudakz 0:e455fdb56bc8 177 else {
hudakz 11:101be77aa5db 178 strcat
hudakz 11:101be77aa5db 179 (
hudakz 11:101be77aa5db 180 httpBuf,
hudakz 11:101be77aa5db 181 "<a href=\"./?sw=1\" class=\"switch\"> "
hudakz 11:101be77aa5db 182 "<input type=\"checkbox\">"
hudakz 11:101be77aa5db 183 );
hudakz 9:161bed13b17e 184 }
hudakz 11:101be77aa5db 185 strcat
hudakz 11:101be77aa5db 186 (
hudakz 11:101be77aa5db 187 httpBuf,
hudakz 11:101be77aa5db 188 "<div class=\"slider\"></div>"
hudakz 11:101be77aa5db 189 "</a>"
hudakz 11:101be77aa5db 190 "</pre>"
hudakz 11:101be77aa5db 191 "<hr>"
hudakz 11:101be77aa5db 192 "<pre>2017 ARMmbed</pre>"
hudakz 11:101be77aa5db 193 "</body>"
hudakz 11:101be77aa5db 194 );
hudakz 9:161bed13b17e 195 /*$on*/
hudakz 11:101be77aa5db 196 return httpBuf;
hudakz 0:e455fdb56bc8 197 }
hudakz 9:161bed13b17e 198
hudakz 0:e455fdb56bc8 199 /**
hudakz 0:e455fdb56bc8 200 * @brief
hudakz 0:e455fdb56bc8 201 * @note
hudakz 0:e455fdb56bc8 202 * @param
hudakz 0:e455fdb56bc8 203 * @retval
hudakz 0:e455fdb56bc8 204 */
hudakz 11:101be77aa5db 205 void sendHTTP(TCPSocket* client, char* header, char* content)
hudakz 9:161bed13b17e 206 {
hudakz 11:101be77aa5db 207 char content_length[10] = { };
hudakz 11:101be77aa5db 208 sprintf(content_length, "%u\r\n", strlen(content));
hudakz 11:101be77aa5db 209 strcat(header, "\r\nContent-Type: text/html\r\n");
hudakz 11:101be77aa5db 210 strcat(header, "Content-Length: ");
hudakz 11:101be77aa5db 211 strcat(header, content_length);
hudakz 11:101be77aa5db 212 strcat(header, "Pragma: no-cache\r\n");
hudakz 11:101be77aa5db 213 strcat(header, "Connection: About to close\r\n\r\n");
hudakz 9:161bed13b17e 214
hudakz 11:101be77aa5db 215 char c = content[0];
hudakz 11:101be77aa5db 216 memmove(httpBuf + strlen(header), httpBuf, strlen(content)); // make room for the header
hudakz 11:101be77aa5db 217 strcpy(httpBuf, header); // copy the header on front of the content
hudakz 11:101be77aa5db 218 httpBuf[strlen(header)] = c;
hudakz 11:101be77aa5db 219 client->send((uint8_t*)httpBuf, strlen(httpBuf));
hudakz 0:e455fdb56bc8 220 }
hudakz 9:161bed13b17e 221
hudakz 0:e455fdb56bc8 222 /**
hudakz 0:e455fdb56bc8 223 * @brief
hudakz 0:e455fdb56bc8 224 * @note
hudakz 0:e455fdb56bc8 225 * @param
hudakz 0:e455fdb56bc8 226 * @retval
hudakz 0:e455fdb56bc8 227 */
hudakz 9:161bed13b17e 228 int main(void)
hudakz 9:161bed13b17e 229 {
hudakz 11:101be77aa5db 230 printf("\r\n Starting \r\n");
hudakz 9:161bed13b17e 231
hudakz 11:101be77aa5db 232 //ethLed.start(eth_led);
hudakz 11:101be77aa5db 233 //net = NetworkInterface::get_default_instance();
hudakz 8:47b0cb4b5b7d 234 net = new EthernetInterface();
hudakz 8:47b0cb4b5b7d 235
hudakz 11:101be77aa5db 236 //net->set_network("192.168.1.181","255.255.255.0","192.168.1.1"); // use static IP address, netmask, gateway
hudakz 8:47b0cb4b5b7d 237 if (!net) {
hudakz 11:101be77aa5db 238 printf("Error! No network inteface found.\n");
hudakz 8:47b0cb4b5b7d 239 return 0;
hudakz 8:47b0cb4b5b7d 240 }
hudakz 0:e455fdb56bc8 241
hudakz 8:47b0cb4b5b7d 242 //net->set_network (IP, NETMASK, GATEWAY); // include this for using static IP address
hudakz 9:161bed13b17e 243 nsapi_size_or_error_t r = net->connect();
hudakz 11:101be77aa5db 244 if (r != NSAPI_ERROR_OK) {
hudakz 11:101be77aa5db 245 printf("Error! net->connect() returned: %d\n", r);
hudakz 8:47b0cb4b5b7d 246 return r;
hudakz 8:47b0cb4b5b7d 247 }
hudakz 7:02a0635aeeac 248
hudakz 9:161bed13b17e 249 // Show the network address
hudakz 11:101be77aa5db 250 SocketAddress addr;
hudakz 11:101be77aa5db 251 net->get_ip_address(&addr);
hudakz 11:101be77aa5db 252 printf("IP address: %s\n", addr.get_ip_address() ? addr.get_ip_address() : "None");
hudakz 11:101be77aa5db 253 net->get_netmask(&addr);
hudakz 11:101be77aa5db 254 printf("Netmask: %s\n", addr.get_ip_address() ? addr.get_ip_address() : "None");
hudakz 11:101be77aa5db 255 net->get_gateway(&addr);
hudakz 11:101be77aa5db 256 printf("Gateway: %s\n", addr.get_ip_address() ? addr.get_ip_address() : "None");
hudakz 9:161bed13b17e 257
hudakz 8:47b0cb4b5b7d 258 /* Open the server on ethernet stack */
hudakz 8:47b0cb4b5b7d 259 server.open(net);
hudakz 9:161bed13b17e 260
hudakz 0:e455fdb56bc8 261 /* Bind the HTTP port (TCP 80) to the server */
hudakz 11:101be77aa5db 262 server.bind(PORT);
hudakz 9:161bed13b17e 263
hudakz 11:101be77aa5db 264 /* Listen for clients */
hudakz 11:101be77aa5db 265 server.listen();
hudakz 9:161bed13b17e 266
hudakz 12:138b2b3d041a 267 printf("=========================================\r\n");
hudakz 12:138b2b3d041a 268 printf("Ready to serve clients.\r\n");
hudakz 12:138b2b3d041a 269 net->get_ip_address(&addr);
hudakz 12:138b2b3d041a 270 printf("Usage: Type http:\/\/%s\/%s\/ into your web browser and hit ENTER\r\n", addr.get_ip_address(), PASSWORD);
hudakz 9:161bed13b17e 271 while (true) {
hudakz 12:138b2b3d041a 272 //listening for http GET request
hudakz 11:101be77aa5db 273 client = server.accept();
hudakz 11:101be77aa5db 274 if (client) {
hudakz 11:101be77aa5db 275 client->getpeername(&addr);
hudakz 11:101be77aa5db 276 printf("Connection succeeded!\n\rIP: %s\n\r", addr.get_ip_address());
hudakz 11:101be77aa5db 277 client->recv(httpBuf, 1500);
hudakz 11:101be77aa5db 278 if (strncmp(httpBuf, "GET", 3) != 0) {
hudakz 11:101be77aa5db 279 strcpy(httpHeader, "HTTP/1.0 200 OK");
hudakz 11:101be77aa5db 280 strcpy(httpBuf, "<h1>200 OK</h1>");
hudakz 11:101be77aa5db 281 sendHTTP(client, httpHeader, httpBuf);
hudakz 11:101be77aa5db 282 }
hudakz 11:101be77aa5db 283 else
hudakz 11:101be77aa5db 284 if ((strncmp(httpBuf, "GET", 3) == 0) && (strncmp(httpBuf + 3, " / ", 3 == 0))) {
hudakz 11:101be77aa5db 285 strcpy(httpHeader, "HTTP/1.0 200 OK");
hudakz 11:101be77aa5db 286 strcpy(httpBuf, "<p>Usage: http://host_or_ip/password</p>\r\n");
hudakz 11:101be77aa5db 287 sendHTTP(client, httpHeader, httpBuf);
hudakz 11:101be77aa5db 288 }
hudakz 11:101be77aa5db 289 else {
hudakz 11:101be77aa5db 290 int cmd = analyseURL(httpBuf);
hudakz 11:101be77aa5db 291 switch (cmd) {
hudakz 11:101be77aa5db 292 case -3:
hudakz 11:101be77aa5db 293 // update webpage
hudakz 11:101be77aa5db 294 strcpy(httpHeader, "HTTP/1.0 200 OK");
hudakz 11:101be77aa5db 295 sendHTTP(client, httpHeader, showWebPage(output));
hudakz 11:101be77aa5db 296 break;
hudakz 9:161bed13b17e 297
hudakz 11:101be77aa5db 298 case -2:
hudakz 11:101be77aa5db 299 // redirect to the right base url
hudakz 11:101be77aa5db 300 strcpy(httpHeader, "HTTP/1.0 301 Moved Permanently\r\nLocation: ");
hudakz 11:101be77aa5db 301 sendHTTP(client, httpHeader, movedPermanently(1));
hudakz 11:101be77aa5db 302 break;
hudakz 9:161bed13b17e 303
hudakz 11:101be77aa5db 304 case -1:
hudakz 11:101be77aa5db 305 strcpy(httpHeader, "HTTP/1.0 401 Unauthorized");
hudakz 11:101be77aa5db 306 strcpy(httpBuf, "<h1>401 Unauthorized</h1>");
hudakz 11:101be77aa5db 307 sendHTTP(client, httpHeader, httpBuf);
hudakz 11:101be77aa5db 308 break;
hudakz 9:161bed13b17e 309
hudakz 11:101be77aa5db 310 case 0:
hudakz 11:101be77aa5db 311 output = OFF; // output off
hudakz 11:101be77aa5db 312 strcpy(httpHeader, "HTTP/1.0 200 OK");
hudakz 11:101be77aa5db 313 sendHTTP(client, httpHeader, showWebPage(output));
hudakz 11:101be77aa5db 314 break;
hudakz 9:161bed13b17e 315
hudakz 11:101be77aa5db 316 case 1:
hudakz 11:101be77aa5db 317 output = ON; // output on
hudakz 11:101be77aa5db 318 strcpy(httpHeader, "HTTP/1.0 200 OK");
hudakz 11:101be77aa5db 319 sendHTTP(client, httpHeader, showWebPage(output));
hudakz 11:101be77aa5db 320 break;
hudakz 11:101be77aa5db 321 }
hudakz 11:101be77aa5db 322 }
hudakz 9:161bed13b17e 323
hudakz 11:101be77aa5db 324 client->close();
hudakz 0:e455fdb56bc8 325 }
hudakz 0:e455fdb56bc8 326 }
hudakz 9:161bed13b17e 327 }