7a2343f1be
Add support for the Texas Instruments ADS7046 12-bit, SPI-compatible ADC. Signed-off-by: Niccolò Maggioni <nicco.maggioni+nuttx@gmail.com>
79 lines
3.1 KiB
C
79 lines
3.1 KiB
C
/****************************************************************************
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* include/nuttx/analog/ads7046.h
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_ANALOG_ADS7046_H
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#define __INCLUDE_NUTTX_ANALOG_ADS7046_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/spi/spi.h>
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#include <stdint.h>
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#if defined(CONFIG_ADC_ADS7046)
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* IOCTL Commands ***********************************************************/
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/* Cmd: ANIOC_ADS7046_READ Arg: uint16_t *value
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* Cmd: ANIOC_ADS7046_READ_FASTUNSAFE Arg: uint16_t *value
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* Cmd: ANIOC_ADS7046_OFFCAL Arg: N/A
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*/
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#define ANIOC_ADS7046_READ _ANIOC(AN_ADS7046_FIRST + 0)
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#define ANIOC_ADS7046_READ_FASTUNSAFE _ANIOC(AN_ADS7046_FIRST + 1)
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#define ANIOC_ADS7046_OFFCAL _ANIOC(AN_ADS7046_FIRST + 2)
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: ads7046_register
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*
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* Description:
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* Register the ADS7046 character device as 'devpath'
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*
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* Input Parameters:
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* devpath - The full path to the driver to register. E.g., "/dev/adc0"
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* spi - An instance of the SPI interface to use.
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* devno - SPI device number.
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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****************************************************************************/
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int ads7046_register(FAR const char *devpath, FAR struct spi_dev_s *spi,
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unsigned int devno);
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#endif /* CONFIG_ADC_ADS7046 */
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#endif /* __INCLUDE_NUTTX_ANALOG_ADS7046_H */
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