/* * Copyright (c) 2007, Swedish Institute of Computer Science. * 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. * * $Id: test-sht11.c,v 1.2 2007/10/22 13:07:00 nvt-se Exp $ */ /** * \file * Testing the SHT11 sensor. * \author * Nicolas Tsiftes <nvt@sics.se> */ #include "contiki.h" #include "dev/sht11.h" #include <stdio.h> PROCESS(test_sht11_process, "SHT11 test"); AUTOSTART_PROCESSES(&test_sht11_process); PROCESS_THREAD(test_sht11_process, ev, data) { static struct etimer et; static unsigned rh; PROCESS_BEGIN(); for (etimer_set(&et, CLOCK_SECOND);; etimer_reset(&et)) { PROCESS_YIELD(); printf("Temperature: %u degrees Celsius\n", (unsigned) (-39.60 + 0.01 * sht11_temp())); rh = sht11_humidity(); printf("Rel. humidity: %u%%\n", (unsigned) (-4 + 0.0405*rh - 2.8e-6*(rh*rh))); } PROCESS_END(); }