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Evrythng API Example for W5500 (WIZnet chip)
Dependencies: EvrythngApi mbed
Fork of EvrythngApiExample by
Evrythng Example for W5500.
main.cpp
- Committer:
- vladounet
- Date:
- 2012-08-30
- Revision:
- 0:85d6be554642
- Child:
- 1:5cdbdabe6577
File content as of revision 0:85d6be554642:
/* * (c) Copyright 2012 EVRYTHNG Ltd London / Zurich * www.evrythng.com * * --- DISCLAIMER --- * * EVRYTHNG provides this source code "as is" and without warranty of any kind, * and hereby disclaims all express or implied warranties, including without * limitation warranties of merchantability, fitness for a particular purpose, * performance, accuracy, reliability, and non-infringement. * * * --- READ ME --- * * This is a demo application that uses EVRYTHNG's mbed wrapper to read and * write value to EVRYTHNG's engine. Please refer to the online documentation * available at http://dev.evrythng.com/mbed. * * * Author: Michel Yerly * */ #include "mbed.h" #include "EthernetInterface.h" #include <time.h> #include "EvrythngApi.h" #include "util.h" #include "eventqueue.h" /* * Configuration */ // Your EVRYTHNG api key. const char* API_KEY = ""; // Your thng id, the one that represents your mbed device. const char* THNG_ID = ""; // The property you want values to be pushed to. const char* THNG_PROP_SET = "prop3"; // The property you want values to be read from. const char* THNG_PROP_GET = "prop3"; DigitalOut led1(LED1); DigitalOut led2(LED2); DigitalOut led3(LED3); DigitalOut led4(LED4); static char displayVal = 0; /* * Displays a value between 0 and 15 as binary on the 4 LEDs. */ void display(char x) { led1 = x & (char)8 ? 1 : 0; led2 = x & (char)4 ? 1 : 0; led3 = x & (char)2 ? 1 : 0; led4 = x & (char)1 ? 1 : 0; displayVal = x; } /* * Flashes the 4 LEDs, and restores the state of the last display(). */ void flash() { char s = displayVal; for (int i = 0; i < 2; ++i) { display(0x0F); wait(0.1); display(0x00); wait(0.1); } display(s); } /* * Function to get the number of milliseconds elapsed since the system startup. * It is imprecise and if called repetitively and quickly, it may always return * the same result. It MUST be called at least every 30 minutes. * NOTE: I'm not proud of it. */ int64_t getMillis() { static Timer tmr; static int64_t clk = 0; tmr.stop(); clk += tmr.read_ms(); tmr.reset(); tmr.start(); char str[21]; char* end; sprinti64(str, clk, &end); *end = '\0'; dbg.printf("%s ", str); return clk; } /* * Entry point. * * This demo application uses an event loop to set and get property values * on EVRYTHNG engine at given intervals. */ int main() { dbg.printf("Initializing ethernet interface\r\n"); EthernetInterface eth; eth.init(); //Use DHCP eth.connect(); dbg.printf("IP address: %s\r\n", eth.getIPAddress()); EvrythngApi api(API_KEY); // intervals in ms const int SET_INTERVAL = 5000; const int GET_INTERVAL = 2000; int curVal = 0; display(curVal); int putVal = 0; char strPutVal[3]; int64_t timestamp = 1345736694000LL; // 2012-08-23 10:44:54am EST EventQueue eventQueue; eventQueue.put(getMillis()+GET_INTERVAL, EVT_GET_PROP); eventQueue.put(getMillis()+SET_INTERVAL, EVT_SET_PROP); while (!eventQueue.empty()) { EventType event = eventQueue.waitNext(getMillis()); switch (event) { case EVT_SET_PROP: eventQueue.put(SET_INTERVAL + getMillis(), EVT_SET_PROP); putVal = (putVal + 1) & 0xF; sprintf(strPutVal, "%d", putVal); timestamp++; api.setThngPropertyValue(THNG_ID, THNG_PROP_SET, string(strPutVal), timestamp); break; case EVT_GET_PROP: eventQueue.put(GET_INTERVAL + getMillis(), EVT_GET_PROP); string v; int r = api.getThngPropertyValue(THNG_ID, THNG_PROP_GET, v); if (r == 0) { flash(); int newVal = atoi(v.c_str()); if (newVal != curVal) { curVal = newVal; display(curVal); } } break; } } dbg.printf("Disconnecting ethernet interface\r\n"); eth.disconnect(); dbg.printf("Done.\r\n"); while(1) {} }