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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.
47 lines
943 B
C
47 lines
943 B
C
/*
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* Copyright (C) 2020 Locha Inc
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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_gp2y10xx
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* @{
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*
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* @file
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* @brief GP2Y10xxAU0F adaption to the RIOT actuator/sensor interface
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*
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* @author Jean Pierre Dudey <jeandudey@hotmail.com>
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*
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* @}
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*/
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#include <string.h>
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#include <stdio.h>
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#include "saul.h"
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#include "gp2y10xx.h"
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static int _read(const void *dev, phydat_t *res)
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{
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uint16_t val;
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if (gp2y10xx_read_density((const gp2y10xx_t *)dev, &val) != GP2Y10XX_OK) {
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return -ECANCELED;
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}
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/* ug/m3 so it's g/m3 with a -6 scale */
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res->unit = UNIT_GPM3;
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res->scale = -6;
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res->val[0] = val;
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return 1;
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}
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const saul_driver_t gp2y10xx_saul_driver = {
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.read = _read,
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.write = saul_write_notsup,
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.type = SAUL_SENSE_PM,
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};
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