osd-contiki/examples/osd/servo-sensor/er-example-server.c

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/*
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* Copyright (C) 2011, Matthias Kovatsch and other contributors.
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* 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) SERVO REST Engine example (with CoAP-specific code)
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
* Harald Pichler <harald@the-develop.net>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "contiki.h"
#include "contiki-net.h"
/* Define which resources to include to meet memory constraints. */
#define REST_RES_INFO 1
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#define REST_RES_T4_SERVO 1
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#define REST_RES_LEDS 0
#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_SERVO)
#include "dev/servo-sensor.h"
#endif
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#if defined (PLATFORM_HAS_T4_SERVO)
#include "dev/t4-servo-sensor.h"
#endif
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#if defined (PLATFORM_HAS_TEMPERATURE)
#include "dev/temperature-sensor.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"
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#elif WITH_COAP == 12
#include "er-coap-12.h"
#elif WITH_COAP == 13
#include "er-coap-13.h"
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#else
#warning "Erbium example without CoAP-specifc functionality"
#endif /* CoAP-specific example */
#define DEBUG 0
#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\" : \"6lowpan-SERVO\"\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
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#if defined (PLATFORM_HAS_SERVO)
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/*A simple actuator example. read the servo status*/
RESOURCE(servo, METHOD_GET | METHOD_PUT , "actuators/servo", "title=\"Servo\";rt=\"servo\"");
void
servo_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
int success = 1;
char temp[100];
int index = 0;
int length = 0; /* |<-------->| */
const char *value = NULL;
size_t len = 0;
int servo1 = servo_sensor.value(0);
int servo2 = servo_sensor.value(1);
switch(REST.get_method_type(request)){
case METHOD_GET:
// jSON Format
index += sprintf(temp + index,"{\n \"servo1\" : \"%d\",\n",servo1);
index += sprintf(temp + index,"\n \"servo2\" : \"%d\"\n",servo2);
index += sprintf(temp + index,"}\n");
length = strlen(temp);
memcpy(buffer, temp,length );
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
REST.set_response_payload(response, buffer, length);
break;
case METHOD_PUT:
if (success && (len=REST.get_post_variable(request, "servo1", &value))) {
PRINTF("servo1 %s\n", value);
servo_sensor.configure(0,atoi(value));
} else {
success = 0;
}
if (success && (len=REST.get_post_variable(request, "servo2", &value))) {
PRINTF("servo2 %s\n", value);
servo_sensor.configure(1,atoi(value));
} else {
success = 0;
}
break;
default:
success = 0;
}
if (!success) {
REST.set_response_status(response, REST.status.BAD_REQUEST);
}
}
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#endif
#if defined (PLATFORM_HAS_T4_SERVO)
RESOURCE(t4_servo, METHOD_GET | METHOD_PUT , "actuators/t4_servo", "title=\"Timer4Servo\";rt=\"t4_servo\"");
void
t4_servo_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
int success = 1;
char temp[100];
int index = 0;
int length = 0; /* |<-------->| */
const char *value = NULL;
size_t len = 0;
int red = t4_servo_sensor.value(0);
int green = t4_servo_sensor.value(1);
int blue = t4_servo_sensor.value(2);
int white = t4_servo_sensor.value(3);
switch(REST.get_method_type(request)){
case METHOD_GET:
// jSON Format
index += sprintf(temp + index,"{\n \"red\" : \"%d\",", red);
index += sprintf(temp + index, "\n \"green\" : \"%d\",", green);
index += sprintf(temp + index, "\n \"blue\" : \"%d\",", blue);
index += sprintf(temp + index, "\n \"white\" : \"%d\"", white);
index += sprintf(temp + index,"}\n");
length = strlen(temp);
memcpy(buffer, temp, length);
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
REST.set_response_payload(response, buffer, length);
break;
case METHOD_POST:
success = 0;
break;
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case METHOD_PUT:
// Note that we have to set all at once:
// red=255&green=255&blue=255&white=255
// otherwise we get "bad request"
if (success && (len=REST.get_post_variable(request, "red", &value)))
{
t4_servo_sensor.configure(0,atoi(value));
} else {
success = 0;
}
if (success && (len=REST.get_post_variable(request, "green", &value))) {
t4_servo_sensor.configure(1,atoi(value));
} else {
success = 0;
}
if (success && (len=REST.get_post_variable(request, "blue", &value))) {
t4_servo_sensor.configure(2,atoi(value));
} else {
success = 0;
}
if (success && (len=REST.get_post_variable(request, "white", &value))) {
t4_servo_sensor.configure(3,atoi(value));
} else {
success = 0;
}
break;
default:
success = 0;
}
if (!success) {
REST.set_response_status(response, REST.status.BAD_REQUEST);
}
}
#endif
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/******************************************************************************/
#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_TEMPERATURE && defined (PLATFORM_HAS_TEMPERATURE)
/* A simple getter example. Returns the reading from light sensor with a simple etag */
RESOURCE(temperature, METHOD_GET, "sensors/cputemp", "title=\"Temperature status\";rt=\"temperature-c\"");
void
temperature_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
int temperature = temperature_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", temperature);
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, "{'temperature':%d}", temperature);
REST.set_response_payload(response, buffer, strlen((char *)buffer));
}
else
{
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REST.set_response_status(response, REST.status.UNSUPPORTED_MEDIA_TYPE);
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const char *msg = "Supporting content-types text/plain and application/json";
REST.set_response_payload(response, msg, strlen(msg));
}
}
#endif /* PLATFORM_HAS_TEMPERATURE */
/******************************************************************************/
#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
{
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REST.set_response_status(response, REST.status.NOT_ACCEPTABLE);
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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()
{
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#if defined (PLATFORM_HAS_LEDS)
leds_off(LEDS_RED);
#endif
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}
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_TEMPERATURE) && REST_RES_TEMPERATURE
SENSORS_ACTIVATE(temperature_sensor);
rest_activate_resource(&resource_temperature);
#endif
#if defined (PLATFORM_HAS_BATTERY) && REST_RES_BATTERY
SENSORS_ACTIVATE(battery_sensor);
rest_activate_resource(&resource_battery);
#endif
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#if defined (PLATFORM_HAS_T4_SERVO) && REST_RES_T4_SERVO
SENSORS_ACTIVATE(t4_servo_sensor);
rest_activate_resource(&resource_t4_servo);
#endif
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/* Define application-specific events here. */
while(1) {
PROCESS_WAIT_EVENT();
} /* while (1) */
PROCESS_END();
}