106 lines
3.9 KiB
C
106 lines
3.9 KiB
C
/*
|
|
* Copyright (c) 2016, Zolertia <http://www.zolertia.com>
|
|
* 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.
|
|
*
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \addtogroup zoul-pm10-sensor
|
|
* @{
|
|
*
|
|
* \file
|
|
* GP2Y1010AU0F PM10 sensor example using the ADC sensors wrapper
|
|
* \author
|
|
* Toni Lozano <tlozano@zolertia.com>
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
#include <stdio.h>
|
|
#include "contiki.h"
|
|
#include "adc-sensors.h"
|
|
#include "dev/pm10-sensor.h"
|
|
#include "dev/sys-ctrl.h"
|
|
#include "lib/sensors.h"
|
|
#include "dev/gpio.h"
|
|
#include "dev/ioc.h"
|
|
/*---------------------------------------------------------------------------*/
|
|
static uint8_t enabled;
|
|
/*---------------------------------------------------------------------------*/
|
|
#ifdef PM10_SENSOR_CONF_CTRL_PIN
|
|
#define PM10_SENSOR_CTRL_PIN PM10_SENSOR_CONF_CTRL_PIN
|
|
#else
|
|
#define PM10_SENSOR_CTRL_PIN 0x07
|
|
#endif
|
|
|
|
#define PM10_SENSOR_PORT GPIO_A_BASE
|
|
|
|
static int
|
|
configure(int type, int value)
|
|
{
|
|
int error;
|
|
if(type != SENSORS_ACTIVE) {
|
|
return PM10_ERROR;
|
|
}
|
|
/*Set PA7 as output, used as pulse-driven wave*/
|
|
ioc_set_over(PM10_SENSOR_PORT, PM10_SENSOR_CTRL_PIN, IOC_OVERRIDE_DIS);
|
|
GPIO_SOFTWARE_CONTROL(PM10_SENSOR_PORT, GPIO_PIN_MASK(PM10_SENSOR_CTRL_PIN));
|
|
GPIO_SET_OUTPUT(PM10_SENSOR_PORT, GPIO_PIN_MASK(PM10_SENSOR_CTRL_PIN));
|
|
|
|
GPIO_CLR_PIN(PM10_SENSOR_PORT, GPIO_PIN_MASK(PM10_SENSOR_CTRL_PIN));
|
|
|
|
/* Use pin number not mask, for example if using the PA5 pin then use 5 */
|
|
error = adc_sensors.configure(ANALOG_PM10_SENSOR, value);
|
|
|
|
return error;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
value(int type)
|
|
{
|
|
uint16_t val;
|
|
/*Set Pulse Wave pin before measure*/
|
|
GPIO_SET_PIN(PM10_SENSOR_PORT, GPIO_PIN_MASK(PM10_SENSOR_CTRL_PIN));
|
|
/*Pulse wave delay*/
|
|
clock_delay_usec(280);
|
|
/*Data acquisition*/
|
|
val = adc_sensors.value(ANALOG_PM10_SENSOR);
|
|
/*Clear pulse wave pin*/
|
|
GPIO_CLR_PIN(PM10_SENSOR_PORT, GPIO_PIN_MASK(PM10_SENSOR_CTRL_PIN));
|
|
|
|
/*Applied constant conversion from UAir project*/
|
|
/*to obtain value in ppm (value in mV * 0.28)*/
|
|
val *= 28;
|
|
val /= 1000;
|
|
|
|
return val;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
SENSORS_SENSOR(pm10, PM10_SENSOR, value, configure, NULL);
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @} */
|