David Smart / Mbed 2 deprecated SSDP_Server

An example demonstrating SSDP Discovery and a companion Web Server.

Dependencies:   mbed mbed-rtos Watchdog SW_HTTPServer SW_String EthernetInterface TimeInterface SSDP

This example program provides a framework -by- example.

It makes itself discoverable to the network using SSDP. From there, it is easy to access the embedded web server to interact with the embedded node.

The example, built on the LPC1768, provides interaction to turn the LEDs on and off via a web page that is discovered using the SSDP protocol.

It also picks up time via an NTP server.

main.cpp

Committer:
WiredHome
Date:
2018-09-01
Revision:
5:6244e237def1
Parent:
4:5da66fab599c
Child:
6:80a97f156128

File content as of revision 5:6244e237def1:

//
// A simple SSDP example
//
#include "mbed.h"               // ver 120; mbed-rtos ver 111
#include "EthernetInterface.h"  // ver 56
#include "SW_HTTPServer.h"      // ver 57
#include "TimeInterface.h"      // ver 24
#include "Watchdog.h"           // ver 6
#include "SW_String.h"          // ver 1
#include "SSDP.h"               // ver 4
#include "WebPages.h"           // Private handler for web queries

// Comment out the next line if you do not have an RA8875 Display
#include "RA8875.h"             // ver 154

RawSerial pc(USBTX, USBRX);
EthernetInterface eth;
TimeInterface ntp(&eth);
Watchdog wd;
time_t lastboottime;

#ifdef RA8875_H
#define LCD_W 480
#define LCD_H 272
#define LCD_C 16
RA8875 lcd(p5, p6, p7, p12, NC, p9,p10,p13, "tft"); // SPI:{MOSI,MISO,SCK,/ChipSelect,/reset}, I2C:{SDA,SCL,/IRQ}, name
#endif

LocalFileSystem local("local");             // some place to hold settings and maybe the static web pages
const char * Server_Root = "/local";

// public for the WebPages handler to see
//
const char * BUILD_DATE = __DATE__ " " __TIME__;
const char * PROG_NAME = "SSDP Server";
char * My_Name = "MBED SSDP Node";
const char * My_SerialNum = "0000001";
int Server_Port = 80;
// end public information

int main()
{
    pc.baud(460800);
    pc.printf("\r\n%s Build %s\r\n", PROG_NAME, BUILD_DATE);
    lastboottime = ntp.timelocal();
    if (wd.WatchdogCausedReset()) {
        pc.printf("**** Watchdog Event caused reset at %s ****\r\n", ntp.ctime(&lastboottime));
    }
    wd.Configure(45);       // very generous, but this is a network appliance, so a bit less deterministic.

#ifdef RA8875_H
    lcd.init(LCD_W,LCD_H,LCD_C, 60);
    lcd.Backlight_u8(30);
    lcd.foreground(Red);
    lcd.printf("Initializing network interface...\r\n");
#endif
    pc.printf("Initializing network interface...\r\n");
    if (0 == eth.init()) {
#ifdef RA8875_H
        lcd.printf("  Name: %s\r\n", My_Name);
#endif
        pc.printf("Name: %s\r\n", My_Name);
        eth.setName(My_Name);

        do {
#ifdef RA8875_H
            lcd.printf("  Connecting to network...\r\n");
#endif
            pc.printf("Connecting to network...\r\n");
            if (0 == eth.connect()) {
                int speed = eth.get_connection_speed();

                pc.printf("Connected at %d Mb/s\r\n", speed);
                pc.printf("IP: %15s\r\n", eth.getIPAddress());
#ifdef RA8875_H
                lcd.printf("  Connected at %d Mb/s\r\n", speed);
                lcd.printf("  IP: %15s\r\n", eth.getIPAddress());
#endif

                HTTPServer svr(Server_Port, Server_Root, 15, 30, 20, 50, &pc);
                svr.RegisterHandler("/", RootPage);
                svr.RegisterHandler("/setup.xml", Setup_xml);
                SSDP ssdp(My_Name, eth.getMACAddress(), eth.getIPAddress(), Server_Port);

                ntp.set_dst("3/11,2:00","11/4,2:00");   // mm/dd,hh:mm
                ntp.set_tzo_min(-360);
                int res = ntp.setTime("pool.ntp.org");

                while (eth.is_connected()) {
                    wd.Service();
                    static time_t tLast;
                    time_t tNow = ntp.timelocal();
                    if (tNow != tLast) {
#ifdef RA8875_H
                        lcd.SetTextFontSize(2);
                        lcd.SetTextCursor(20,120);
                        lcd.printf("%s", ntp.ctime(&tNow));
#endif
                        pc.printf("time is %s\r\n", ntp.ctime(&tNow));
                        tLast = tNow;
                    }
                    // Any other work can happen here
                    Thread::yield();
                }
#ifdef RA8875_H
                lcd.cls();
                lcd.printf("lost network.\r\n");
#endif
                pc.printf("lost connection.\r\n");
                eth.disconnect();
            } else {
#ifdef RA8875_H
                lcd.printf("  ... failed to connect\r\n");
#endif
                pc.printf("  ... failed to connect.\r\n");
            }
        } while (1);
    }
}