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6cffe9b0b4
This commit implements a compile-time warning and in-code comment warning for legacy sensor drivers. This is intended to: - Warn users that legacy drivers may eventually be removed - Warn developers that they should not use a legacy driver as a reference for their new driver contributions Signed-off-by: Matteo Golin <matteo.golin@gmail.com>
199 lines
5.4 KiB
C
199 lines
5.4 KiB
C
/****************************************************************************
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* drivers/sensors/adxl345_spi.c
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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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/* WARNING for developers:
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*
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* This driver uses the legacy style of writing sensor drivers for NuttX. The
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* project has since decided to adopt a new sensor framework in order to
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* have a consistent API and feature-set.
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*
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* Sensors which use the uORB framework are typically suffixed "_uorb". You
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* can also visit the documentation about the new sensor framework to learn
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* more.
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*/
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#warning "This is a deprecated legacy sensor driver."
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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 <unistd.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/sensors/adxl345.h>
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#include "adxl345.h"
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#if defined(CONFIG_SENSORS_ADXL345) && defined(CONFIG_ADXL345_SPI)
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: adxl345_configspi
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*
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* Description:
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*
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****************************************************************************/
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static inline void adxl345_configspi(FAR struct spi_dev_s *spi)
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{
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/* Configure SPI for the ADXL345 */
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SPI_SETMODE(spi, SPIDEV_MODE3);
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SPI_SETBITS(spi, 8);
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SPI_HWFEATURES(spi, 0);
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SPI_SETFREQUENCY(spi, ADXL345_SPI_MAXFREQUENCY);
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: adxl345_getreg8
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*
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* Description:
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* Read from an 8-bit ADXL345 register
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*
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****************************************************************************/
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uint8_t adxl345_getreg8(FAR struct adxl345_dev_s *priv, uint8_t regaddr)
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{
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uint8_t regval;
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/* If SPI bus is shared then lock and configure it */
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SPI_LOCK(priv->spi, true);
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adxl345_configspi(priv->spi);
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/* Select the ADXL345 */
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SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), true);
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/* Send register to read and get the next byte */
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SPI_SEND(priv->spi, regaddr);
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SPI_RECVBLOCK(priv->spi, ®val, 1);
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/* Deselect the ADXL345 */
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SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), false);
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/* Unlock bus */
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SPI_LOCK(priv->spi, false);
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#ifdef CONFIG_ADXL345_REGDEBUG
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_err("%02x->%02x\n", regaddr, regval);
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#endif
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return regval;
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}
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/****************************************************************************
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* Name: adxl345_putreg8
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*
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* Description:
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* Write a value to an 8-bit ADXL345 register
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*
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****************************************************************************/
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void adxl345_putreg8(FAR struct adxl345_dev_s *priv, uint8_t regaddr,
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uint8_t regval)
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{
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#ifdef CONFIG_ADXL345_REGDEBUG
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_err("%02x<-%02x\n", regaddr, regval);
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#endif
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/* If SPI bus is shared then lock and configure it */
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SPI_LOCK(priv->spi, true);
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adxl345_configspi(priv->spi);
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/* Select the ADXL345 */
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SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), true);
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/* Send register address and set the value */
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SPI_SEND(priv->spi, regaddr);
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SPI_SEND(priv->spi, regval);
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/* Deselect the ADXL345 */
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SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), false);
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/* Unlock bus */
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SPI_LOCK(priv->spi, false);
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}
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/****************************************************************************
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* Name: adxl345_getreg16
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*
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* Description:
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* Read 16-bits of data from an ADXL345 register
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*
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****************************************************************************/
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uint16_t adxl345_getreg16(FAR struct adxl345_dev_s *priv, uint8_t regaddr)
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{
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uint16_t regval;
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/* If SPI bus is shared then lock and configure it */
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SPI_LOCK(priv->spi, true);
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adxl345_configspi(priv->spi);
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/* Select the ADXL345 */
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SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), true);
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/* Send register to read and get the next 2 bytes */
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SPI_SEND(priv->spi, regaddr);
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SPI_RECVBLOCK(priv->spi, ®val, 2);
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/* Deselect the ADXL345 */
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SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), false);
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/* Unlock bus */
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SPI_LOCK(priv->spi, false);
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#ifdef CONFIG_ADXL345_REGDEBUG
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_err("%02x->%04x\n", regaddr, regval);
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#endif
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return regval;
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}
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#endif /* CONFIG_SENSORS_ADXL345 && CONFIG_ADXL345_SPI*/
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