4643c5d02d
Now there is a generic resource that can generate and parse application/json as well as text/plain. It can be re-used, only the from_string and to_string routines have to be written and the resource properly set up. A new resource format is specified, see GENERIC_RESOURCE in, e.g., examples/osd/pwm-example. This is now used in all my examples, namely pwm-example, arduino-sketch, wallclock-time. There was an off by one error for the month in time formatting (in gmtime and localtime). And the leap-year computation was broken. Both fixed now, so we get a correct date. For localtime we are still 2 hours off because daylight saving isn't implemented yet. Also renamed gmtime to utc.
298 lines
10 KiB
C
298 lines
10 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 "time.h"
|
|
#include "time_resource.h"
|
|
#include "jsonparse.h"
|
|
|
|
/* Define which resources to include to meet memory constraints. */
|
|
#define REST_RES_INFO 1
|
|
#define REST_RES_LEDS 1
|
|
#define REST_RES_TOGGLE 0
|
|
#define REST_RES_BATTERY 1
|
|
|
|
#include "erbium.h"
|
|
|
|
#if defined (PLATFORM_HAS_BUTTON)
|
|
#include "dev/button-sensor.h"
|
|
#endif
|
|
#if defined (PLATFORM_HAS_LEDS)
|
|
#include "dev/leds.h"
|
|
#endif
|
|
#if defined (PLATFORM_HAS_BATTERY)
|
|
#include "dev/battery-sensor.h"
|
|
#endif
|
|
|
|
|
|
/* For CoAP-specific example: not required for normal RESTful Web service. */
|
|
#if WITH_COAP == 3
|
|
#include "er-coap-03.h"
|
|
#elif WITH_COAP == 7
|
|
#include "er-coap-07.h"
|
|
#elif WITH_COAP == 12
|
|
#include "er-coap-12.h"
|
|
#elif WITH_COAP == 13
|
|
#include "er-coap-13.h"
|
|
#else
|
|
#warning "Erbium example without CoAP-specifc functionality"
|
|
#endif /* CoAP-specific example */
|
|
|
|
#define DEBUG 1
|
|
#if DEBUG
|
|
#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 REST_RES_INFO
|
|
/*
|
|
* Resources are defined by the RESOURCE macro.
|
|
* Signature: resource name, the RESTful methods it handles, and its URI path (omitting the leading slash).
|
|
*/
|
|
RESOURCE(info, METHOD_GET, "info", "title=\"Info\";rt=\"text\"");
|
|
|
|
/*
|
|
* A handler function named [resource name]_handler must be implemented for each RESOURCE.
|
|
* A buffer for the response payload is provided through the buffer pointer. Simple resources can ignore
|
|
* preferred_size and offset, but must respect the REST_MAX_CHUNK_SIZE limit for the buffer.
|
|
* If a smaller block size is requested for CoAP, the REST framework automatically splits the data.
|
|
*/
|
|
void
|
|
info_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
char message[100];
|
|
int index = 0;
|
|
int length = 0; /* |<-------->| */
|
|
|
|
/* Some data that has the length up to REST_MAX_CHUNK_SIZE. For more, see the chunk resource. */
|
|
// jSON Format
|
|
index += sprintf(message + index,"{\n \"Version\" : \"V1.0pre1\",\n");
|
|
index += sprintf(message + index," \"name\" : \"Wallclock-time\"\n");
|
|
index += sprintf(message + index,"}\n");
|
|
|
|
length = strlen(message);
|
|
memcpy(buffer, message,length );
|
|
|
|
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
|
|
REST.set_response_payload(response, buffer, length);
|
|
}
|
|
#endif
|
|
|
|
/******************************************************************************/
|
|
#if defined (PLATFORM_HAS_LEDS)
|
|
/******************************************************************************/
|
|
#if REST_RES_LEDS
|
|
/*A simple actuator example, depending on the color query parameter and post variable mode, corresponding led is activated or deactivated*/
|
|
RESOURCE(leds, METHOD_POST | METHOD_PUT , "actuators/leds", "title=\"LEDs: ?color=r|g|b, POST/PUT mode=on|off\";rt=\"Control\"");
|
|
|
|
void
|
|
leds_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
size_t len = 0;
|
|
const char *color = NULL;
|
|
const char *mode = NULL;
|
|
uint8_t led = 0;
|
|
int success = 1;
|
|
|
|
if ((len=REST.get_query_variable(request, "color", &color))) {
|
|
PRINTF("color %.*s\n", len, color);
|
|
|
|
if (strncmp(color, "r", len)==0) {
|
|
led = LEDS_RED;
|
|
} else if(strncmp(color,"g", len)==0) {
|
|
led = LEDS_GREEN;
|
|
} else if (strncmp(color,"b", len)==0) {
|
|
led = LEDS_BLUE;
|
|
} else {
|
|
success = 0;
|
|
}
|
|
} else {
|
|
success = 0;
|
|
}
|
|
|
|
if (success && (len=REST.get_post_variable(request, "mode", &mode))) {
|
|
PRINTF("mode %s\n", mode);
|
|
|
|
if (strncmp(mode, "on", len)==0) {
|
|
leds_on(led);
|
|
} else if (strncmp(mode, "off", len)==0) {
|
|
leds_off(led);
|
|
} else {
|
|
success = 0;
|
|
}
|
|
} else {
|
|
success = 0;
|
|
}
|
|
|
|
if (!success) {
|
|
REST.set_response_status(response, REST.status.BAD_REQUEST);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/******************************************************************************/
|
|
#if REST_RES_TOGGLE
|
|
/* A simple actuator example. Toggles the red led */
|
|
RESOURCE(toggle, METHOD_GET | METHOD_PUT | METHOD_POST, "actuators/toggle", "title=\"Red LED\";rt=\"Control\"");
|
|
void
|
|
toggle_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
leds_toggle(LEDS_RED);
|
|
}
|
|
#endif
|
|
#endif /* PLATFORM_HAS_LEDS */
|
|
|
|
/******************************************************************************/
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
#if REST_RES_BATTERY && defined (PLATFORM_HAS_BATTERY)
|
|
/* A simple getter example. Returns the reading from light sensor with a simple etag */
|
|
RESOURCE(battery, METHOD_GET, "sensors/battery", "title=\"Battery status\";rt=\"battery-mV\"");
|
|
void
|
|
battery_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
int battery = battery_sensor.value(0);
|
|
|
|
const uint16_t *accept = NULL;
|
|
int num = REST.get_header_accept(request, &accept);
|
|
|
|
if ((num==0) || (num && accept[0]==REST.type.TEXT_PLAIN))
|
|
{
|
|
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
|
|
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%d", battery);
|
|
|
|
REST.set_response_payload(response, (uint8_t *)buffer, strlen((char *)buffer));
|
|
}
|
|
else if (num && (accept[0]==REST.type.APPLICATION_JSON))
|
|
{
|
|
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
|
|
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'battery':%d}", battery);
|
|
|
|
REST.set_response_payload(response, buffer, strlen((char *)buffer));
|
|
}
|
|
else
|
|
{
|
|
REST.set_response_status(response, REST.status.NOT_ACCEPTABLE);
|
|
const char *msg = "Supporting content-types text/plain and application/json";
|
|
REST.set_response_payload(response, msg, strlen(msg));
|
|
}
|
|
}
|
|
#endif /* PLATFORM_HAS_BATTERY */
|
|
/******************************************************************************/
|
|
|
|
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. */
|
|
#if REST_RES_INFO
|
|
rest_activate_resource(&resource_info);
|
|
#endif
|
|
#if defined (PLATFORM_HAS_LEDS)
|
|
#if REST_RES_LEDS
|
|
rest_activate_resource(&resource_leds);
|
|
#endif
|
|
#if REST_RES_TOGGLE
|
|
rest_activate_resource(&resource_toggle);
|
|
#endif
|
|
#endif /* PLATFORM_HAS_LEDS */
|
|
#if defined (PLATFORM_HAS_BATTERY) && REST_RES_BATTERY
|
|
SENSORS_ACTIVATE(battery_sensor);
|
|
rest_activate_resource(&resource_battery);
|
|
#endif
|
|
rest_activate_resource(&resource_timestamp);
|
|
rest_activate_resource(&resource_localtime);
|
|
rest_activate_resource(&resource_utc);
|
|
|
|
/* Define application-specific events here. */
|
|
while(1) {
|
|
PROCESS_WAIT_EVENT();
|
|
} /* while (1) */
|
|
|
|
PROCESS_END();
|
|
}
|