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Also added a 2-minutes average wind direction value, replaced the 240 bytes buffer from the reference example, but probably there's room for efficiency improvement
157 lines
6.2 KiB
C
157 lines
6.2 KiB
C
/*
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* Copyright (c) 2016, Zolertia - http://www.zolertia.com
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup zoul-examples
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* @{
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*
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* \defgroup zoul-weather-meter-test Test the Sparkfun's weather meter
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*
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* The example application shows how to read data from the anemometer, wind vane
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* and rain gauge, on board the Sparkfun's weater meter
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*
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* @{
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*
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* \file
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* Test application for the Sparkfun's weather meter
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*
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* \author
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* Antonio Lignan <alinan@zolertia.com>
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*/
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/*---------------------------------------------------------------------------*/
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#include "contiki.h"
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#include "cpu.h"
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#include "sys/etimer.h"
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#include "dev/leds.h"
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#include "dev/weather-meter.h"
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#include <stdio.h>
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#include <stdint.h>
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/*---------------------------------------------------------------------------*/
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#define READ_SENSOR_PERIOD CLOCK_SECOND
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#define ANEMOMETER_THRESHOLD_TICK 13 /**< 16 Km/h */
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#define RAIN_GAUGE_THRESHOLD_TICK 15 /**< each increment of 4.19 mm */
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/*---------------------------------------------------------------------------*/
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static struct etimer et;
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/*---------------------------------------------------------------------------*/
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PROCESS(test_weather_meter_sensors, "Test Weather meter sensors");
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AUTOSTART_PROCESSES(&test_weather_meter_sensors);
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/*---------------------------------------------------------------------------*/
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static void
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rain_callback(uint16_t value)
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{
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/* To calculate ticks from mm of rain, divide by 0.2794 mm */
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printf("*** Rain gauge over threshold (%u ticks)\n", value);
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weather_meter.configure(WEATHER_METER_RAIN_GAUGE_INT_OVER,
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(value + RAIN_GAUGE_THRESHOLD_TICK));
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}
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/*---------------------------------------------------------------------------*/
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static void
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wind_speed_callback(uint16_t value)
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{
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/* This checks for instant wind speed values (over a second), the minimum
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* value is 1.2 Km/h (one tick), as the reference is 2.4KM/h per rotation, and
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* the anemometer makes 2 ticks per rotation. Instant speed is calculated as
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* multiples of this, so if you want to check for 16Km/h, then it would be 13
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* ticks
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*/
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printf("*** Wind speed over threshold (%u ticks)\n", value);
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(test_weather_meter_sensors, ev, data)
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{
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PROCESS_BEGIN();
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static uint32_t rain;
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static uint16_t wind_speed;
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static uint16_t wind_dir;
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static uint16_t wind_dir_avg_2m;
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static uint16_t wind_speed_avg;
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static uint16_t wind_speed_avg_2m;
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static uint16_t wind_speed_max;
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/* Register the callback handler when thresholds are met */
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WEATHER_METER_REGISTER_ANEMOMETER_INT(wind_speed_callback);
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WEATHER_METER_REGISTER_RAIN_GAUGE_INT(rain_callback);
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/* Enable the sensors, this has to be called before any of the interrupt calls
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* like the ones below
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*/
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SENSORS_ACTIVATE(weather_meter);
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/* And the upper threshold value to compare and generate an interrupt */
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weather_meter.configure(WEATHER_METER_ANEMOMETER_INT_OVER,
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ANEMOMETER_THRESHOLD_TICK);
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weather_meter.configure(WEATHER_METER_RAIN_GAUGE_INT_OVER,
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RAIN_GAUGE_THRESHOLD_TICK);
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etimer_set(&et, READ_SENSOR_PERIOD);
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while(1) {
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
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rain = weather_meter.value(WEATHER_METER_RAIN_GAUGE);
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wind_speed = weather_meter.value(WEATHER_METER_ANEMOMETER);
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wind_dir = weather_meter.value(WEATHER_METER_WIND_VANE);
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wind_dir_avg_2m = weather_meter.value(WEATHER_METER_WIND_VANE_AVG_2M);
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wind_speed_avg = weather_meter.value(WEATHER_METER_ANEMOMETER_AVG);
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wind_speed_avg_2m = weather_meter.value(WEATHER_METER_ANEMOMETER_AVG_2M);
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wind_speed_max = weather_meter.value(WEATHER_METER_ANEMOMETER_MAX);
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#if WEATHER_METER_RAIN_RETURN_TICKS
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rain *= WEATHER_METER_AUX_RAIN_MM;
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if(rain > (WEATHER_METER_AUX_RAIN_MM * 3)) {
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printf("Rain: %lu.%lu mm, ", (rain / 10000), (rain % 10000));
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#else
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if(rain >= 10) {
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printf("Rain: %u.%u mm, ", (rain / 10), (rain % 10));
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#endif
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} else {
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printf("Rain: 0.%lu mm, ", rain);
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}
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printf("Wind dir: %u.%01u deg, ", (wind_dir / 10), (wind_dir % 10));
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printf("(%u.%01u deg avg)\n", (wind_dir_avg_2m / 10), (wind_dir_avg_2m % 10));
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printf("Wind speed: %u m/h ", wind_speed);
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printf("(%u m/h avg, %u m/h 2m avg, %u m/h max)\n\n", wind_speed_avg,
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wind_speed_avg_2m,
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wind_speed_max);
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etimer_reset(&et);
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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/**
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* @}
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* @}
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* @}
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*/
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