142 lines
5.0 KiB
C
142 lines
5.0 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 "sensortag/reed-relay.h"
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#include "gpio-interrupt.h"
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#include "sys/timer.h"
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#include "ti-lib.h"
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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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#define REED_IO_CFG (IOC_CURRENT_2MA | IOC_STRENGTH_AUTO | \
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IOC_IOPULL_DOWN | IOC_SLEW_DISABLE | \
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IOC_HYST_DISABLE | IOC_BOTH_EDGES | \
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IOC_INT_DISABLE | IOC_IOMODE_NORMAL | \
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IOC_NO_WAKE_UP | IOC_INPUT_ENABLE)
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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_interrupt_handler(uint8_t ioid)
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{
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if(!timer_expired(&debouncetimer)) {
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ENERGEST_OFF(ENERGEST_TYPE_IRQ);
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return;
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}
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sensors_changed(&reed_relay_sensor);
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timer_set(&debouncetimer, CLOCK_SECOND / 2);
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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)ti_lib_gpio_read_dio(BOARD_IOID_REED_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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ti_lib_ioc_int_disable(BOARD_IOID_REED_RELAY);
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ti_lib_gpio_clear_event_dio(BOARD_IOID_REED_RELAY);
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/* Enable the GPIO clock when the CM3 is running */
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ti_lib_prcm_peripheral_run_enable(PRCM_PERIPH_GPIO);
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/* S/W control, input, pull-down */
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ti_lib_ioc_port_configure_set(BOARD_IOID_REED_RELAY, IOC_PORT_GPIO,
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REED_IO_CFG);
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gpio_interrupt_register_handler(BOARD_IOID_REED_RELAY,
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reed_interrupt_handler);
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break;
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case SENSORS_ACTIVE:
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if(value) {
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ti_lib_ioc_int_enable(BOARD_IOID_REED_RELAY);
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} else {
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ti_lib_ioc_int_disable(BOARD_IOID_REED_RELAY);
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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 (ti_lib_ioc_port_configure_get(BOARD_IOID_REED_RELAY)
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& IOC_INT_ENABLE) == IOC_INT_ENABLE;
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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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