153 lines
4.8 KiB
C
153 lines
4.8 KiB
C
/*
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* Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.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 copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup sensortag-cc26xx-reed-relay
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* @{
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*
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* \file
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* Driver for the Sensortag Reed Relay
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*/
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/*---------------------------------------------------------------------------*/
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#include "contiki.h"
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#include "sys/clock.h"
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#include "sys/timer.h"
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#include "lib/sensors.h"
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#include "sys/timer.h"
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#include "reed-relay.h"
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/*---------------------------------------------------------------------------*/
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#include <Board.h>
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#include <ti/drivers/PIN.h>
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/*---------------------------------------------------------------------------*/
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#include <stdint.h>
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/*---------------------------------------------------------------------------*/
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static struct timer debouncetimer;
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/*---------------------------------------------------------------------------*/
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static PIN_Config reed_pin_table[] = {
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Board_RELAY | PIN_INPUT_EN | PIN_PULLDOWN | PIN_IRQ_DIS,
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PIN_TERMINATE
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};
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static PIN_State pin_state;
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static PIN_Handle pin_handle;
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/*---------------------------------------------------------------------------*/
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static bool
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sensor_init(void)
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{
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if (pin_handle) {
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return true;
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}
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pin_handle = PIN_open(&pin_state, reed_pin_table);
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return pin_handle != NULL;
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Handler for Sensortag-CC26XX reed interrupts
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*/
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static void
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reed_relay_isr(PIN_Handle handle, PIN_Id pinId)
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{
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(void)handle;
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(void)pinId;
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if (!timer_expired(&debouncetimer)) {
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return;
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}
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timer_set(&debouncetimer, CLOCK_SECOND / 2);
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sensors_changed(&reed_relay_sensor);
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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 (int)PIN_getInputValue(Board_RELAY);
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Configuration function for the button sensor for all buttons.
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*
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* \param type SENSORS_HW_INIT: Initialise. SENSORS_ACTIVE: Enables/Disables
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* depending on 'value'
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* \param value 0: disable, non-zero: enable
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* \return Always returns 1
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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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switch(type) {
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case SENSORS_HW_INIT:
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if (!sensor_init()) {
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return REED_RELAY_READING_ERROR;
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}
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PIN_setInterrupt(pin_handle, Board_RELAY | PIN_IRQ_DIS);
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PIN_registerIntCb(pin_handle, reed_relay_isr);
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break;
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case SENSORS_ACTIVE:
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if (value) {
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PIN_setInterrupt(pin_handle, Board_RELAY | PIN_IRQ_NEGEDGE);
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} else {
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PIN_setInterrupt(pin_handle, Board_RELAY | PIN_IRQ_DIS);
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}
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break;
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default:
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break;
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}
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return 1;
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Status function for the reed
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* \param type SENSORS_ACTIVE or SENSORS_READY
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* \return 1 Interrupt enabled, 0: Disabled
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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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switch (type) {
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case SENSORS_ACTIVE:
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case SENSORS_READY:
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return (PIN_getConfig(Board_RELAY) & PIN_BM_IRQ) != 0;
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break;
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default:
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break;
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}
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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SENSORS_SENSOR(reed_relay_sensor, "REED", value, configure, status);
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/*---------------------------------------------------------------------------*/
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/** @} */
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