nuttx-apps/examples/foc/foc_adc.h

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/****************************************************************************
* apps/examples/foc/foc_adc.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __EXAMPLES_FOC_FOC_ADC_H
#define __EXAMPLES_FOC_FOC_ADC_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* VBUS source must be specified */
#if defined(CONFIG_EXAMPLES_FOC_VBUS_CONST) && \
defined(CONFIG_EXAMPLES_FOC_VBUS_ADC)
# error
#endif
/* Velocity source must be specified */
#if defined(CONFIG_EXAMPLES_FOC_VEL_CONST) && \
defined(CONFIG_EXAMPLES_FOC_VEL_ADC)
# error
#endif
/* VBUS ADC scale factor */
#ifdef CONFIG_EXAMPLES_FOC_VBUS_ADC
# define VBUS_ADC_SCALE (CONFIG_EXAMPLES_FOC_ADC_VREF * \
CONFIG_EXAMPLES_FOC_VBUS_SCALE / \
CONFIG_EXAMPLES_FOC_ADC_MAX / \
1000.0f / \
1000.0f)
#endif
/* Velocity ADC scale factor */
#ifdef CONFIG_EXAMPLES_FOC_VEL_ADC
# define VEL_ADC_SCALE (1.0f / CONFIG_EXAMPLES_FOC_ADC_MAX)
#endif
/* If constant velocity is selected, velocity value must be provided */
#ifdef CONFIG_EXAMPLES_FOC_VEL_CONST
# define VEL_ADC_SCALE (1)
# if CONFIG_EXAMPLES_FOC_VEL_CONST_VALUE == 0
# error
# endif
#endif
/* If constant VBUS is selected, VBUS value must be provided */
#ifdef CONFIG_EXAMPLES_FOC_VBUS_CONST
# define VBUS_ADC_SCALE (1)
# define VBUS_CONST_VALUE (CONFIG_EXAMPLES_FOC_VBUS_CONST_VALUE / 1000.0f)
# if CONFIG_EXAMPLES_FOC_VBUS_CONST_VALUE == 0
# error
# endif
#endif
/* Additional configuration if ADC support is required */
#ifdef CONFIG_EXAMPLES_FOC_HAVE_ADC
/* AUX ADC samples support */
# if defined(CONFIG_EXAMPLES_FOC_VEL_ADC) && \
defined(CONFIG_EXAMPLES_FOC_VBUS_ADC)
# define ADC_SAMPLES (2)
# elif defined(CONFIG_EXAMPLES_FOC_VEL_ADC) || \
defined(CONFIG_EXAMPLES_FOC_VBUS_ADC)
# define ADC_SAMPLES (1)
# else
# define ADC_SAMPLES (0)
#endif
/* Verify ADC FIFO size */
# if CONFIG_ADC_FIFOSIZE != (ADC_SAMPLES + 1)
# error Invalid ADC FIFO size
# endif
/* Numerate ADC samples */
# if defined(CONFIG_EXAMPLES_FOC_VEL_ADC) && \
defined(CONFIG_EXAMPLES_FOC_VBUS_ADC)
# define VBUS_ADC_SAMPLE (0)
# define VEL_ADC_SAMPLE (1)
# elif defined(CONFIG_EXAMPLES_FOC_VBUS_ADC)
# define VBUS_ADC_SAMPLE (0)
# elif defined(CONFIG_EXAMPLES_FOC_VEL_ADC)
# define VEL_ADC_SAMPLE (0)
# endif
#endif /* CONFIG_EXAMPLES_FOC_HAVE_ADC */
#endif /* __EXAMPLES_FOC_FOC_ADC_H */