contiki/examples/zolertia/z1/test-adxl345.c
2016-02-22 12:08:56 +01:00

166 lines
5.8 KiB
C

/*
* Copyright (c) 2010, 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.
*
*/
/**
* \file
* A simple program for testing the adxl345 on-board accelerometer of the
* Zolertia Z1. Enables interrupts and registers callbacks for them. Then
* starts a constantly running readout of acceleration data.
* \author
* Marcus Lundén, SICS <mlunden@sics.se>
* Enric M. Calvo, Zolertia <ecalvo@zolertia.com>
*/
#include <stdio.h>
#include "contiki.h"
#include "dev/leds.h"
#include "dev/adxl345.h"
/*---------------------------------------------------------------------------*/
#define LED_INT_ONTIME (CLOCK_SECOND / 2)
#define ACCM_READ_INTERVAL CLOCK_SECOND
/*---------------------------------------------------------------------------*/
static process_event_t led_off_event;
static struct etimer led_etimer;
static struct etimer et;
/*---------------------------------------------------------------------------*/
PROCESS(accel_process, "Test Accel process");
PROCESS(led_process, "LED handling process");
AUTOSTART_PROCESSES(&accel_process, &led_process);
/*---------------------------------------------------------------------------*/
/* As several interrupts can be mapped to one interrupt pin, when interrupt
* strikes, the adxl345 interrupt source register is read. This function prints
* out which interrupts occurred. Note that this will include all interrupts,
* even those mapped to 'the other' pin, and those that will always signal even
* if not enabled (such as watermark).
*/
void
print_int(uint16_t reg)
{
if(reg & ADXL345_INT_FREEFALL) {
printf("Freefall ");
}
if(reg & ADXL345_INT_INACTIVITY) {
printf("InActivity ");
}
if(reg & ADXL345_INT_ACTIVITY) {
printf("Activity ");
}
if(reg & ADXL345_INT_DOUBLETAP) {
printf("DoubleTap ");
}
if(reg & ADXL345_INT_TAP) {
printf("Tap ");
}
printf("\n");
}
/*---------------------------------------------------------------------------*/
/* accelerometer free fall detection callback */
void
accm_ff_cb(uint8_t reg)
{
leds_on(LEDS_BLUE);
process_post(&led_process, led_off_event, NULL);
printf("~~[%u] Freefall detected! (0x%02X) -- ",
((uint16_t)clock_time()) / 128, reg);
print_int(reg);
}
/*---------------------------------------------------------------------------*/
/* accelerometer tap and double tap detection callback */
void
accm_tap_cb(uint8_t reg)
{
process_post(&led_process, led_off_event, NULL);
if(reg & ADXL345_INT_DOUBLETAP) {
leds_on(LEDS_GREEN);
printf("~~[%u] DoubleTap detected! (0x%02X) -- ",
((uint16_t)clock_time()) / 128, reg);
} else {
leds_on(LEDS_RED);
printf("~~[%u] Tap detected! (0x%02X) -- ",
((uint16_t)clock_time()) / 128, reg);
}
print_int(reg);
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(led_process, ev, data) {
PROCESS_BEGIN();
while(1) {
PROCESS_WAIT_EVENT_UNTIL(ev == led_off_event);
etimer_set(&led_etimer, LED_INT_ONTIME);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&led_etimer));
leds_off(LEDS_RED + LEDS_GREEN + LEDS_BLUE);
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
/* Main process, setups */
PROCESS_THREAD(accel_process, ev, data)
{
PROCESS_BEGIN();
int16_t x, y, z;
/* Register the event used for lighting up an LED when interrupt strikes. */
led_off_event = process_alloc_event();
/* Start and setup the accelerometer with default values, eg no interrupts
* enabled.
*/
SENSORS_ACTIVATE(adxl345);
/* Register the callback functions for each interrupt */
ACCM_REGISTER_INT1_CB(accm_ff_cb);
ACCM_REGISTER_INT2_CB(accm_tap_cb);
/* Set what strikes the corresponding interrupts. Several interrupts per
* pin is possible. For the eight possible interrupts, see adxl345.h and
* adxl345 datasheet.
*/
accm_set_irq(ADXL345_INT_FREEFALL, ADXL345_INT_TAP + ADXL345_INT_DOUBLETAP);
while(1) {
x = adxl345.value(X_AXIS);
y = adxl345.value(Y_AXIS);
z = adxl345.value(Z_AXIS);
printf("x: %d y: %d z: %d\n", x, y, z);
etimer_set(&et, ACCM_READ_INTERVAL);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/