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RIOT/drivers/apds99xx/apds99xx_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

96 lines
2.3 KiB
C

/*
* Copyright (C) 2018 Gunar Schorcht
*
* 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_apds99xx
* @brief APDS99XX adaption to the RIOT actuator/sensor interface
* @author Gunar Schorcht <gunar@schorcht.net>
* @file
*/
#include <string.h>
#include "saul.h"
#include "apds99xx.h"
static int read_prx(const void *dev, phydat_t *res)
{
if (apds99xx_read_prx_raw((const apds99xx_t *)dev, (uint16_t*)res) == 0) {
res->unit = UNIT_CTS;
res->scale = 0;
return 1;
}
return -ECANCELED;
}
static int read_als(const void *dev, phydat_t *res)
{
if (apds99xx_read_als_raw((const apds99xx_t *)dev, (uint16_t*)res) == 0) {
res->unit = UNIT_CTS;
res->scale = 0;
return 1;
}
return -ECANCELED;
}
#if MODULE_APDS9900 || MODULE_APDS9901 || MODULE_APDS9930
static int read_lux(const void *dev, phydat_t *res)
{
if (apds99xx_read_illuminance((const apds99xx_t *)dev, (uint16_t*)res) == 0) {
res->unit = UNIT_LUX;
res->scale = 0;
return 1;
}
return -ECANCELED;
}
#endif
#if MODULE_APDS9950 || MODULE_APDS9960
static int read_rgb(const void *dev, phydat_t *res)
{
apds99xx_rgb_t rgb;
if (apds99xx_read_rgb_raw((const apds99xx_t *)dev, &rgb) == 0) {
res->val[0] = (int16_t)rgb.red;
res->val[1] = (int16_t)rgb.green;
res->val[2] = (int16_t)rgb.blue;
res->unit = UNIT_CTS;
res->scale = 0;
return 3;
}
return -ECANCELED;
}
#endif
const saul_driver_t apds99xx_saul_prx_driver = {
.read = read_prx,
.write = saul_write_notsup,
.type = SAUL_SENSE_PROXIMITY,
};
const saul_driver_t apds99xx_saul_als_driver = {
.read = read_als,
.write = saul_write_notsup,
.type = SAUL_SENSE_LIGHT,
};
#if MODULE_APDS9900 || MODULE_APDS9901 || MODULE_APDS9930
const saul_driver_t apds99xx_saul_lux_driver = {
.read = read_lux,
.write = saul_write_notsup,
.type = SAUL_SENSE_LIGHT,
};
#endif
#if MODULE_APDS9950 || MODULE_APDS9960
const saul_driver_t apds99xx_saul_rgb_driver = {
.read = read_rgb,
.write = saul_write_notsup,
.type = SAUL_SENSE_LIGHT,
};
#endif