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RIOT/drivers/sm_pwm_01c/sm_pwm_01c_saul.c
Marian Buschsieweke 16f859dafd
drivers/saul: use const qualifier for data to write
This makes life easier when calling e.g. `saul_reg_write()` with data
stored in flash.

As now the signatures for reading and writing differ (in that `const`
qualifier only), `saul_notsup()` is split into `saul_write_notsup()`
and `saul_read_notsup()`. However, one is implemented as a symbol alias
of the other, so that ROM consumption remains unchanged.
2022-05-23 08:35:27 +02:00

65 lines
1.5 KiB
C

/*
* Copyright (C) 2021 Inria
*
* 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_sm_pwm_01c
* @{
* @file
* @brief SAUL adaption of the SM_PWM_01C dust sensor driver
*
* @author Francisco Molina <francois-xavier.molina@inria.fr>
* @}
*/
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include "phydat.h"
#include "saul.h"
#include "sm_pwm_01c.h"
#include "sm_pwm_01c_params.h"
static int read_mc_pm_2p5(const void *_dev, phydat_t *data)
{
sm_pwm_01c_data_t values;
sm_pwm_01c_t *dev = (sm_pwm_01c_t *)_dev;
sm_pwm_01c_read_data(dev, &values);
data->unit = UNIT_GPM3;
data->scale = -6;
uint32_t value = values.mc_pm_2p5;
phydat_fit(data, (int32_t *)&value, 1);
return 1;
}
static int read_mc_pm_10(const void *_dev, phydat_t *data)
{
sm_pwm_01c_data_t values;
sm_pwm_01c_t *dev = (sm_pwm_01c_t *)_dev;
sm_pwm_01c_read_data(dev, &values);
data->unit = UNIT_GPM3;
data->scale = -6;
uint32_t value = values.mc_pm_10;
phydat_fit(data, (int32_t *)&value, 1);
return 1;
}
const saul_driver_t sm_pwm_01c_saul_driver_mc_pm_10 = {
.read = read_mc_pm_10,
.write = saul_write_notsup,
.type = SAUL_SENSE_PM,
};
const saul_driver_t sm_pwm_01c_saul_driver_mc_pm_2p5 = {
.read = read_mc_pm_2p5,
.write = saul_write_notsup,
.type = SAUL_SENSE_PM,
};