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16f859dafd
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.
66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
/*
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* Copyright (C) 2021 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup drivers_sgp30
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* @brief SAUL adaption for SGP30 sensor
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* @{
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*
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* @file
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*
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* @author Francisco Molina <francois-xavier.molina@inria.fr>
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdbool.h>
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#include "phydat.h"
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#include "saul.h"
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#include "sgp30.h"
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static int _read_tvoc(const void *dev, phydat_t *res)
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{
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sgp30_data_t data;
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if (sgp30_read_measurements((sgp30_t *)dev, &data)) {
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return -ECANCELED;
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}
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res->val[0] = data.tvoc;
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res->unit = UNIT_PPB;
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res->scale = 0;
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return 1;
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}
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static int _read_eco2(const void *dev, phydat_t *res)
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{
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sgp30_data_t data;
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if (sgp30_read_measurements((sgp30_t *)dev, &data)) {
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return -ECANCELED;
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}
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res->val[0] = data.eco2;
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res->unit = UNIT_PPM;
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res->scale = 0;
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return 1;
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}
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const saul_driver_t sgp30_saul_driver_eco2 = {
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.read = _read_eco2,
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.write = saul_write_notsup,
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.type = SAUL_SENSE_CO2
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};
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const saul_driver_t sgp30_saul_driver_tvoc = {
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.read = _read_tvoc,
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.write = saul_write_notsup,
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.type = SAUL_SENSE_TVOC
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};
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