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RIOT/drivers/hsc/hsc_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

57 lines
1.2 KiB
C

/*
* Copyright (C) 2020 Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
*
* 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_hsc
* @{
*
* @file
* @brief SAUL adaption for HSC device
*
* @author Quang Pham <phhr_quang@live.com>
* @}
*/
#include <string.h>
#include "saul.h"
#include "hsc.h"
static int read_temperature(const void *dev, phydat_t *res)
{
if (hsc_read_temperature(dev, res->val) != 0) {
return 0;
}
res->unit = UNIT_TEMP_C;
res->scale = -1;
return 1;
}
static int read_pressure(const void *dev, phydat_t *res)
{
int32_t value;
if (hsc_read_pressure(dev, &value) != 0) {
return 0;
}
res->unit = UNIT_BAR;
res->scale = -6;
phydat_fit(res, &value, 1);
return 1;
}
const saul_driver_t hsc_temperature_saul_driver = {
.read = read_temperature,
.write = saul_write_notsup,
.type = SAUL_SENSE_TEMP
};
const saul_driver_t hsc_pressure_saul_driver = {
.read = read_pressure,
.write = saul_write_notsup,
.type = SAUL_SENSE_PRESS
};