128 lines
4.8 KiB
C
128 lines
4.8 KiB
C
/*
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* Copyright (c) 2015, 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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/**
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* \addtogroup zoul-motion-sensor
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* @{
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*
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* \file
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* Digital motion sensor driver
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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/i2c.h"
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#include "dev/motion-sensor.h"
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#include "lib/sensors.h"
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#include "dev/sys-ctrl.h"
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#include "dev/gpio.h"
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#include "dev/ioc.h"
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/*---------------------------------------------------------------------------*/
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#define DEBUG 0
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#if DEBUG
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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/*---------------------------------------------------------------------------*/
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#define MOTION_SENSOR_PORT_BASE GPIO_PORT_TO_BASE(MOTION_SENSOR_PORT)
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#define MOTION_SENSOR_PIN_MASK GPIO_PIN_MASK(MOTION_SENSOR_PIN)
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/*---------------------------------------------------------------------------*/
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void (*presence_int_callback)(uint8_t value);
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/*---------------------------------------------------------------------------*/
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PROCESS(motion_int_process, "Motion interrupt process handler");
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(motion_int_process, ev, data)
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{
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PROCESS_EXITHANDLER();
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PROCESS_BEGIN();
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while(1) {
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PROCESS_YIELD_UNTIL(ev == PROCESS_EVENT_POLL);
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presence_int_callback(0);
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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static void
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motion_interrupt_handler(uint8_t port, uint8_t pin)
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{
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process_poll(&motion_int_process);
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}
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/*---------------------------------------------------------------------------*/
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static int
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status(int type)
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{
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return MOTION_SUCCESS;
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}
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/*---------------------------------------------------------------------------*/
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static int
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value(int type)
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{
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return GPIO_READ_PIN(MOTION_SENSOR_PORT_BASE, MOTION_SENSOR_PIN_MASK);
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}
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/*---------------------------------------------------------------------------*/
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static int
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configure(int type, int value)
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{
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if(type != MOTION_ACTIVE) {
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PRINTF("Motion: invalid configuration option\n");
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return MOTION_ERROR;
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}
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if(!value) {
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presence_int_callback = NULL;
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GPIO_DISABLE_INTERRUPT(MOTION_SENSOR_PORT_BASE, MOTION_SENSOR_PIN_MASK);
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return MOTION_SUCCESS;
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}
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/* Configure interruption */
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GPIO_SOFTWARE_CONTROL(MOTION_SENSOR_PORT_BASE, MOTION_SENSOR_PIN_MASK);
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GPIO_SET_INPUT(MOTION_SENSOR_PORT_BASE, MOTION_SENSOR_PIN_MASK);
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GPIO_DETECT_RISING(MOTION_SENSOR_PORT_BASE, MOTION_SENSOR_PIN_MASK);
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GPIO_TRIGGER_SINGLE_EDGE(MOTION_SENSOR_PORT_BASE, MOTION_SENSOR_PIN_MASK);
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ioc_set_over(MOTION_SENSOR_PORT, MOTION_SENSOR_PIN, IOC_OVERRIDE_DIS);
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gpio_register_callback(motion_interrupt_handler, MOTION_SENSOR_PORT,
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MOTION_SENSOR_PIN);
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process_start(&motion_int_process, NULL);
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GPIO_ENABLE_INTERRUPT(MOTION_SENSOR_PORT_BASE, MOTION_SENSOR_PIN_MASK);
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nvic_interrupt_enable(MOTION_SENSOR_VECTOR);
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return MOTION_SUCCESS;
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}
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/*---------------------------------------------------------------------------*/
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SENSORS_SENSOR(motion_sensor, MOTION_SENSOR, value, configure, status);
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/*---------------------------------------------------------------------------*/
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/** @} */
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