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44 lines
980 B
44 lines
980 B
/* |
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* Copyright (C) 2016 Eistec AB |
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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_saul |
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* @{ |
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* |
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* @file |
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* @brief SAUL wrapper for direct access to analog pins |
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* |
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* @author Joakim Nohlgård <joakim.nohlgard@eistec.se> |
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* |
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* @} |
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*/ |
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#include <string.h> |
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#include "saul.h" |
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#include "saul/periph.h" |
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#include "phydat.h" |
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#include "periph/adc.h" |
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static int read_adc(const void *dev, phydat_t *res) |
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{ |
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const saul_adc_params_t *params = *((const saul_adc_params_t **)dev); |
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res->val[0] = adc_sample(params->line, params->res); |
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memset(&(res->val[1]), 0, 2 * sizeof(res->val[1])); |
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/* Raw ADC reading has no unit */ |
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res->unit = UNIT_NONE; |
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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 adc_saul_driver = { |
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.read = read_adc, |
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.write = saul_notsup, |
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.type = SAUL_SENSE_ANALOG, |
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};
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