mpl3115a2_saul.c
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/*
* Copyright (C) 2017 HAW Hamburg
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup drivers_mpl3115a2
* @{
*
* @file
* @brief MPL3115A2 adaption to the RIOT actuator/sensor interface
*
* @author Sebastian Meiling <s@mlng.net>
*
* @}
*/
#include <string.h>
#include <stdio.h>
#include "log.h"
#include "saul.h"
#include "mpl3115a2.h"
static int read_pressure(const void *dev, phydat_t *res)
{
uint8_t state;
uint32_t pressure;
if (mpl3115a2_read_pressure((const mpl3115a2_t *)dev,
&pressure, &state) != MPL3115A2_OK) {
LOG_ERROR("[SAUL] mpl3115a2_read_pressure failed!\n");
return -1;
}
/* pressure values > 100000, so /100 for int16_t which matches unit hPA */
res->val[0] = (int16_t)(pressure/100);
res->unit = UNIT_PA;
res->scale = 2;
return 1;
}
static int read_temperature(const void *dev, phydat_t *res)
{
int16_t temperature;
if (mpl3115a2_read_temp((const mpl3115a2_t *)dev, &temperature) != MPL3115A2_OK) {
LOG_ERROR("[SAUL] mpl3115a2_read_temp failed!\n");
return -1;
}
res->val[0] = temperature;
res->unit = UNIT_TEMP_C;
res->scale = -1;
return 1;
}
const saul_driver_t mpl3115a2_pressure_saul_driver = {
.read = read_pressure,
.write = saul_notsup,
.type = SAUL_SENSE_PRESS,
};
const saul_driver_t mpl3115a2_temperature_saul_driver = {
.read = read_temperature,
.write = saul_notsup,
.type = SAUL_SENSE_TEMP,
};