102 lines
4 KiB
C
102 lines
4 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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* This file is part of the Contiki operating system.
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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-ac-dimmer-test Krida Electronics AC light dimmer test example
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*
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* Demonstrates the use of an AC dimmer with zero-crossing, connected to the
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* ADC1 and ADC2 pins (PA5 and PA4 respectively), powered over the D+5.1 pin
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*
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* @{
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*
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* \file
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* A quick program to test an AC dimmer
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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 <stdio.h>
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#include "contiki.h"
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#include "dev/ac-dimmer.h"
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#include "lib/sensors.h"
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/*---------------------------------------------------------------------------*/
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PROCESS(remote_ac_dimmer_process, "AC light dimmer test");
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AUTOSTART_PROCESSES(&remote_ac_dimmer_process);
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/*---------------------------------------------------------------------------*/
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static uint8_t dimming;
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static struct etimer et;
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(remote_ac_dimmer_process, ev, data)
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{
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PROCESS_BEGIN();
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dimming = 0;
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SENSORS_ACTIVATE(ac_dimmer);
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printf("AC dimmer: min %u%% max %u%%\n", DIMMER_DEFAULT_MIN_DIMM_VALUE,
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DIMMER_DEFAULT_MAX_DIMM_VALUE);
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/* Set the lamp to 10% and wait a few seconds */
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ac_dimmer.value(DIMMER_DEFAULT_MIN_DIMM_VALUE);
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etimer_set(&et, CLOCK_SECOND * 5);
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
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/* Upon testing for duty cycles lower than 10% there was noise (probably from
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* the triac), causing the driver to skip a beat, and from time to time made
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* the test lamp blink. This is easily reproducible by setting the dimmer to
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* 5% and using a logic analyzer on the SYNC and GATE pins. The noise was
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* picked-up also by the non-connected test probes of the logic analyser.
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* Nevertheless the difference between 10% and 2% bright-wise is almost
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* negligible
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*/
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while(1) {
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dimming += DIMMER_DEFAULT_MIN_DIMM_VALUE;
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if(dimming > DIMMER_DEFAULT_MAX_DIMM_VALUE) {
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dimming = DIMMER_DEFAULT_MIN_DIMM_VALUE;
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}
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ac_dimmer.value(dimming);
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printf("AC dimmer: light is now --> %u\n", ac_dimmer.status(SENSORS_ACTIVE));
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etimer_set(&et, CLOCK_SECOND);
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&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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