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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.
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/*
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* Copyright (C) 2021 Gunar Schorcht
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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_mcp47xx
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* @brief MCP47xx adaption to the RIOT actuator/sensor interface
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* @author Gunar Schorcht <gunar@schorcht.net>
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* @file
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*/
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#if MODULE_SAUL
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#include <string.h>
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#include "saul.h"
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#include "mcp47xx.h"
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extern mcp47xx_t mcp47xx_devs[];
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static int set(const void *dev, const phydat_t *data)
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{
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const mcp47xx_saul_dac_params_t *p = (const mcp47xx_saul_dac_params_t *)dev;
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mcp47xx_dac_set(&mcp47xx_devs[p->dev], p->channel, (uint16_t)data->val[0]);
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return 1;
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}
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static int get(const void *dev, phydat_t *data)
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{
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const mcp47xx_saul_dac_params_t *p = (const mcp47xx_saul_dac_params_t *)dev;
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mcp47xx_dac_get(&mcp47xx_devs[p->dev], p->channel, (uint16_t*)&data->val[0]);
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return 1;
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}
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const saul_driver_t mcp47xx_dac_saul_driver = {
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.read = get,
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.write = set,
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.type = SAUL_ACT_DIMMER
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};
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#endif /* MODULE_SAUL */
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