Ilya I
Example of HTTPServer with additional features: * SNTPClient, DST rules * Link status indication * Local or SDCard-based WebServer * RPC-able class * Static and Dynamic HTML page
Diff: main.cpp
- Revision:
- 0:886e4b3119ad
- Child:
- 1:ec4170739967
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+++ b/main.cpp Sun Jan 03 07:00:43 2010 +0000
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+// Written by IVA2K
+//
+// Example of HTTPServer with additional features:
+// * SNTP Client (Simple NTP)
+// * Link status indication (LED4 or RJ45 socket LED on MBED-BoB2-mod)
+// * Local file system (create index.htm page on MBED!)
+// * SD-based WebServer
+// * RPC-able class (myrpc, allows remote function call that blinks LED1 N times)
+// * Static HTML page
+// * Dynamic HTML page
+//
+// Instructions:
+// 1 Plug MBED into MBED-BoB2 (or other ETH connector breakout)
+// 2 Plug ETH connector into your network (needs DHCP to get IP address and Internet connection)
+// 3 Power up MBED using USB cable
+// 4 Install MBED serial driver (http://mbed.org/handbook/SerialPC)
+// 5 Copy compiled .bin to your MBED (make sure target device selected in the compiler is correct)
+// 6 Open terminal on the mbed serial port
+// 7 Push MBED reset button
+// 8 Terminal will display info message with mac address, followed by IP address (if connection succeeds)
+// in the following items, replace 10.0.0.321 with actual MBED IP address from the terminal
+// 9 Open browser and enter the following URL:
+// http://10.0.0.321/rpc/myrpc1/blink,10
+// 10 MBED will blink the LED 10 times
+// 11 Open browser and enter the following URL:
+// http://10.0.0.321/rpc/myrpc1/gettime
+// 12 The browser will show date and time from the MBED synchronized to NTP server
+// 13 Open browser and enter the following URL:
+// http://10.0.0.321/static.htm
+// 14 The browser will show static HTML page
+// 15 Open browser and enter the following URL:
+// http://10.0.0.321/dynamic.htm
+// 16 The browser will show dynamic HTML page
+// 17 Create a simple index.htm page on the MBED
+// 18 Open browser and enter the following URL:
+// http://10.0.0.321
+// 19 The browser will show index HTML page
+// 20 Create a simple index.htm page on a micro SD card, plug the card into MBED-BoB2
+// 21 Open browser and enter the following URL:
+// http://10.0.0.321
+// 22 The browser will show index HTML page from SD card
+// 23 Optionally, create file "sntp.ini" on MBED or SD card. Copy-paste SNTP configuration from the terminal into this file and modify to your needs.
+//
+// Notes: there are still some bugs in HTTPServer code.
+// To help fight some of them, copy a valid favicon.ico (a 16x16 icon) file to MBED.
+//
+
+#include "mbed.h"
+#include "SDFileSystem.h"
+#include "HTTPServer.h"
+#include "HTTPRPC.h"
+#include "HTTPFS.h"
+#include "HTTPStaticPage.h"
+#include "HTTPDynamicPage.h"
+#include "HTTPLinkStatus.h"
+#include "SNTPClient.h"
+
+#define CLS "\033[2J"
+
+const char content[] =
+"<HTML>"
+"<HEAD>"
+"<title>Static Page</title>"
+"</HEAD>"
+"<BODY>"
+"<H1>Hello World</H1>"
+"<p>Page generated statically from code.</p>"
+"</BODY></HTML>"
+;
+
+#define MAX_DYNAMIC_CONTENT_LEN 2048
+char dynamic_content[MAX_DYNAMIC_CONTENT_LEN];
+
+const char content_fmt[] =
+"<HTML>"
+"<HEAD>"
+"<title>Dynamic Page</title>"
+"</HEAD>"
+"<BODY>"
+"<H1>Hello World</H1>"
+"<p>Page generated dynamically from code.</p>"
+"<p>URL=%s</p>"
+"<p>Header Fields=%s</p>"
+"</BODY></HTML>"
+;
+
+DigitalOut led1(LED1, "led1");
+DigitalOut led2(LED2, "led2");
+DigitalOut led3(LED3, "led3");
+DigitalOut led4(LED4, "led4");
+DigitalIn sw1(p9, "sw1");
+DigitalIn sw2(p10, "sw2");
+LocalFileSystem local("local");
+SDFileSystem sd(p5, p6, p7, p8, "sd"); // MBED-BoB2
+
+#include "myrpc.h"
+myrpc myrpc1(LED1, "myrpc1");
+
+extern Ethernet eth; // eth is defined elsewhere, avoid compiler error.
+Serial pc(USBTX, USBRX);
+int gDebug=1;
+float gWait = 0.005; // Main loop wait timeout
+
+HTTPStatus myDynamicPage(HTTPConnection *con, HTTPDynamicPageData *pd) {
+#if 0
+ // Static example. With this, we don't really need HTTPStaticPage
+ pd->size = 0; // let it measure our page
+ pd->page = (char*)content; // Nothing dynamic about that yet, but we can now get loose here.
+ pd->page_free = NULL; // No mem free() needed
+#elif 0
+ // Dynamic example, static buffer
+ pd->size = sprintf(dynamic_content, content_fmt, con->getURL(), con->getHeaderFields());
+ pd->page = (char*)dynamic_content;
+ pd->page_free = NULL; // No mem free() needed
+if(pd->size > sizeof(dynamic_content)) printf("ASSERTION FAILED: %s:%d\r\n", __FILE__, __LINE__); // Buffer overrun
+#else
+ // Dynamic example, dynamic buffer
+ int size = sizeof(content_fmt) + 512; // Just guess how much the data will expand
+ char *buf = (char *)malloc(size);
+ if (buf) {
+ pd->size = sprintf(buf, content_fmt, con->getURL(), con->getHeaderFields());
+ pd->page = buf;
+ pd->page_free = &free; // Use free() when done
+if(pd->size > size) printf("ASSERTION FAILED: %s:%d\r\n", __FILE__, __LINE__); // Buffer overrun
+#endif
+ }
+ return HTTP_OK;
+}
+
+int main(void) {
+ char mac[6];
+ int sw1_old=0, sw2_old=0;
+ bool use_sd = false;
+
+ led1=1;
+ led2=1;
+ led3=1;
+ led4=1;
+
+ // Start RTC
+ time_t seconds = time(NULL);
+ if (seconds == (unsigned)-1 || seconds == 0) {
+ seconds = 1256729737; // Set RTC time to Wed, 28 Oct 2009 11:35:37
+ set_time(seconds);
+ printf("RTC initialized, start time %d seconds\r\n", seconds);
+ }
+
+ char *hostname = "mbed";
+ HTTPServer http(hostname); // Use DHCP
+ http.timeout(10000); // Sets the timout for a HTTP request. The timout is the time which is allowed to spent between two incomming TCP packets. If the time is passed the connection will be closed.
+
+ eth.address(mac);
+ pc.printf(CLS "\r\n\r\nHTTPServer \"%s\" started\r\nMAC %02X:%02X:%02X:%02X:%02X:%02X\r\n%s",
+ hostname, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
+ gDebug?"Debug is ON\r\n":""
+ );
+
+ Base::add_rpc_class<AnalogIn>();
+ Base::add_rpc_class<AnalogOut>();
+ Base::add_rpc_class<DigitalIn>();
+ Base::add_rpc_class<DigitalOut>();
+ Base::add_rpc_class<PwmOut>();
+ Base::add_rpc_class<Timer>();
+ Base::add_rpc_class<SPI>();
+ Base::add_rpc_class<BusOut>();
+ Base::add_rpc_class<BusIn>();
+ Base::add_rpc_class<myrpc>();
+ led1=0;
+
+ // Check if we can use SD card for the web server
+ FILE *fp = fopen("/sd/index.htm", "r");
+ if (fp == NULL) {
+ if (gDebug) printf("DEBUG: No SD card found or no index.htm file - using LocalFilesystem for WebServer.\r\n");
+ } else {
+ use_sd = true;
+ fclose(fp);
+ if (gDebug) printf("DEBUG: Found SD card with index.htm file - using SD for WebServer.\r\n");
+ }
+
+ if (0 != SNTPReadIniFile("/sd/sntp.ini") )
+ SNTPReadIniFile("/local/sntp.ini");
+ SNTPWriteIniFile(stdout);
+
+
+ http.addHandler(new HTTPLinkStatus("/",
+#if 0
+ p25, p26, // MBED-BoB2-mods
+#else
+ LED3, LED4,
+#endif
+ 0.1,
+ /*do_urlfile*/ true, /*do_link_printf*/ true, /*do_log_printf*/ false,
+ /*log_file*/ ( (gDebug>1) ? (use_sd ? "/sd/httpd.log" : "/local/httpd.log") : NULL)
+ )); // Should be the first handler to get a preview of all requests
+ http.addHandler(new HTTPRPC());
+ led2=0;
+
+ // Static/Dynamic pages must be installed before FileSystem on /
+ http.addHandler(new HTTPStaticPage("/static.htm", content, strlen(content)));
+ http.addHandler(new HTTPDynamicPage("/dynamic.htm", &myDynamicPage));
+ http.addHandler(new HTTPFileSystemHandler("/", use_sd ? "/sd/" : "/local/"));
+ led3=0;
+
+// FIXME: BUG If eth is not plugged, http.bind() hangs!
+ http.bind();
+
+ SNTPClientInit();
+ led4 = 0;
+
+ pc.printf("\r"); // Add linefeed for stupid Hyperterminal
+ while(1) {
+ http.poll(); // Have to call this method at least every 250ms to let the http server run.
+ if (sw1 & !sw1_old) {
+ printf("SW1\r\n");
+ }
+ if (sw2 && !sw2_old) {
+ printf(CLS "SW2\r\n");
+ }
+ sw1_old = sw1;
+ sw2_old = sw2;
+ wait(gWait);
+ }
+}
+
+//END
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