121 lines
3.5 KiB
C
121 lines
3.5 KiB
C
/*
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* Copyright (c) 2015, Copyright Robert Olsson / Radio Sensors AB
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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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* Author : Robert Olsson robert@radio-sensors.com
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* Created : 2015-11-22
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*/
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#include "contiki.h"
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#include "lib/sensors.h"
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#include "dev/pulse-sensor.h"
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#include "rss2.h"
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const struct sensors_sensor pulse_sensor;
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#define NP 2
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uint32_t volatile pc[NP];
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/*
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* Note interrupt sources can be woken up from sleep mode PWR_SAVE
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* Two interrupt ports, #0 green terminal block. #1 pin header via
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* a comparator.
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*/
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static void
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port_irq_ctrl(uint8_t on)
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{
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if(on) {
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DDRD &= ~(1 << PD2);
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PORTD &= ~(1 << PD2);
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EIMSK = 0;
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EICRA |= 0x20; /* Falling edge INT2 */
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EIMSK |= (1 << PD2); /* Enable interrupt for pin */
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/* p1 port */
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DDRD &= ~(1 << PD3);
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PORTD &= ~(1 << PD3);
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EIMSK |= (1 << PD3); /* Enable interrupt for pin */
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EICRA |= 0x80; /* Falling edge */
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PCICR |= (1 << PCIE0); /* And enable irq PCINT 7:0 */
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} else {
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EICRA = 0;
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PORTD |= (1 << PD2);
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EIMSK &= ~(1 << PD2); /* Disable interrupt for pin */
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PORTD |= (1 << PD3);
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EIMSK &= ~(1 << PD3); /* Disable interrupt for pin */
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}
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}
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ISR(INT2_vect)
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{
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if(!(PCICR & (1 << PCIE0))) {
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return;
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}
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pc[0]++;
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}
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ISR(INT3_vect)
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{
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if(!(PCICR & (1 << PCIE0))) {
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return;
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}
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pc[1]++;
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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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if(type == 0) {
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return (int)pc[0];
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}
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if(type == 1) {
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return (int)pc[1];
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}
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return -1;
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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 0;
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}
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/*---------------------------------------------------------------------------*/
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static int
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configure(int type, int c)
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{
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port_irq_ctrl(1); /* Enable pulse counts */
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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SENSORS_SENSOR(pulse_sensor, "Pulse", value, configure, status);
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