osd-contiki/examples/osd/wallclock-time/er-example-server.c
Ralf Schlatterbeck 0068611b4d Implement localtime
Now we manage a timezone and daylight-savings aware version of
localtime. We parse UNIX timezone strings. The default (active after the
first call to localtime or localtime_r) is CET/CEST, the timezone of
Europe/Vienna. The wallclock-time osd-example demonstrates how to set a
different timezone via the timezone resource.

Note: After startup no timezone is set. So in this state querying the
timezone resource will return an empty string. After first call to
localtime (if not timezone has been set via the timezone resource) a
query to timezone will return the default timezone string for CET/CEST.

The string returned by the localtime and utc timezones now also includes
the timezone name.

New fields tm_gmtoff and tm_zone were added to the tm structure. These
are available in BSD systems and when setting special compiler
definitions on Linux.

Note: the timezone offset information in the tm structure (tm_gmtoff)
as well as in the tz structure returned by gettimeofday (tz_minuteswest)
may be wrong sign, this code is largely untested.
2016-02-18 09:55:07 +01:00

144 lines
4.8 KiB
C

/*
* Copyright (C) 2011, Matthias Kovatsch and other contributors.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* Erbium (Er) Wallclock REST Engine example (with CoAP-specific code)
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
* Ralf Schlatterbeck <rsc@runtux.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "contiki.h"
#include "contiki-net.h"
#include "er-coap-engine.h"
#include "time.h"
#include "time_resource.h"
#include "jsonparse.h"
#if PLATFORM_HAS_BUTTON
#include "dev/button-sensor.h"
#endif
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]", (lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3], (lladdr)->addr[4], (lladdr)->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#define PRINTLLADDR(addr)
#endif
#if PLATFORM_HAS_LEDS
#include "dev/leds.h"
extern resource_t res_leds, res_toggle;
#endif
#if PLATFORM_HAS_BATTERY
#include "dev/battery-sensor.h"
extern resource_t res_battery;
#endif
/*
#if PLATFORM_HAS_RADIO
#include "dev/radio-sensor.h"
extern resource_t res_radio;
#endif
*/
//******************************************************************************/
void
hw_init()
{
#if defined (PLATFORM_HAS_LEDS)
leds_off(LEDS_RED);
#endif
}
PROCESS(rest_server_example, "Erbium Example Server");
AUTOSTART_PROCESSES(&rest_server_example, &sensors_process);
PROCESS_THREAD(rest_server_example, ev, data)
{
PROCESS_BEGIN();
PRINTF("Starting Erbium Example Server\n");
#ifdef RF_CHANNEL
PRINTF("RF channel: %u\n", RF_CHANNEL);
#endif
#ifdef IEEE802154_PANID
PRINTF("PAN ID: 0x%04X\n", IEEE802154_PANID);
#endif
PRINTF("uIP buffer: %u\n", UIP_BUFSIZE);
PRINTF("LL header: %u\n", UIP_LLH_LEN);
PRINTF("IP+UDP header: %u\n", UIP_IPUDPH_LEN);
PRINTF("REST max chunk: %u\n", REST_MAX_CHUNK_SIZE);
/* if static routes are used rather than RPL */
#if !UIP_CONF_IPV6_RPL && !defined (CONTIKI_TARGET_MINIMAL_NET) && !defined (CONTIKI_TARGET_NATIVE)
set_global_address();
configure_routing();
#endif
/* Initialize the OSD Hardware. */
hw_init();
/* Initialize the REST engine. */
rest_init_engine();
/* Activate the application-specific resources. */
rest_activate_resource(&res_leds, "s/leds");
#if defined (PLATFORM_HAS_BATTERY) && REST_RES_BATTERY
SENSORS_ACTIVATE(battery_sensor);
rest_activate_resource(&res_battery, "s/battery");
#endif
rest_activate_resource(&res_timestamp, "clock/timestamp");
rest_activate_resource(&res_timezone, "clock/timezone");
rest_activate_resource(&res_localtime, "clock/localtime");
rest_activate_resource(&res_utc, "clock/utc");
/* Define application-specific events here. */
while(1) {
PROCESS_WAIT_EVENT();
} /* while (1) */
PROCESS_END();
}