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RIOT/drivers/grove_ledbar/grove_ledbar_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

39 lines
777 B
C

/*
* Copyright (C) 2017 HAW Hamburg
*
* 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_grove_ledbar
* @{
*
* @file
* @brief Grove LED bar adaption to SAUL
*
* @author Sebastian Meiling <s@mlng.net>
*
* @}
*/
#include <string.h>
#include <stdio.h>
#include "saul.h"
#include "grove_ledbar.h"
static int set_ledbar(const void *dev, const phydat_t *res)
{
uint8_t lvl = (uint8_t)res->val[0];
grove_ledbar_set((grove_ledbar_t *)dev, lvl);
return 1;
}
const saul_driver_t grove_ledbar_saul_driver = {
.read = saul_read_notsup,
.write = set_ledbar,
.type = SAUL_ACT_LED_RGB,
};