b9a1969122
Improvements in STM32 ADC arch/arm/src/stm32/stm32_adc.c: start conversion on startup is now possible if TIM triggering selected. This can be useful to start ADC TIM conversion for ADC IPv2 when opening ADC device. arch/arm/src/stm32/stm32_adc.c: fix compilation errors for chips with one ADV TIM configs/nucleo-f303re: refresh ADC example configs/nucleo-f334r8: refresh ADC example Approved-by: GregoryN <gnutt@nuttx.org>
387 lines
8.7 KiB
C
387 lines
8.7 KiB
C
/****************************************************************************
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* configs/nucleo-f303re/src/stm32_adc.c
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*
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* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
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* Copyright (C) 2015-2016 Omni Hoverboards Inc. All rights reserved.
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* Authors: Gregory Nutt <gnutt@nuttx.org>
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* Paul Alexander Patience <paul-a.patience@polymtl.ca>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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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 <stdbool.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/board.h>
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#include <nuttx/analog/adc.h>
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#include "stm32.h"
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#if defined(CONFIG_ADC) && \
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(defined(CONFIG_STM32_ADC1) || defined(CONFIG_STM32_ADC2) || \
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defined(CONFIG_STM32_ADC3) || defined(CONFIG_STM32_ADC4))
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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#if (defined(CONFIG_STM32_ADC1) && defined(CONFIG_STM32_ADC2)) || \
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(defined(CONFIG_STM32_ADC3) && defined(CONFIG_STM32_ADC4))
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# error "will not work with this combination of ADCs"
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#endif
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/* 1 or 2 ADC devices (DEV1, DEV2) */
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#if defined(CONFIG_STM32_ADC1)
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# define DEV1_PORT 1
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#endif
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#if defined(CONFIG_STM32_ADC2)
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# if defined(DEV1_PORT)
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# define DEV2_PORT 2
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# else
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# define DEV1_PORT 2
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# endif
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#endif
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#if defined(CONFIG_STM32_ADC3)
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# if defined(DEV2_PORT)
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# error "Choose maximum two of ADC1, ADC2, ADC3, ADC4"
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# else
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# if defined(DEV1_PORT)
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# define DEV2_PORT 3
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# else
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# define DEV1_PORT 3
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# endif
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# endif
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#endif
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#if defined(CONFIG_STM32_ADC4)
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# if defined(DEV2_PORT)
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# error "Choose maximum two of ADC1, ADC2, ADC3, ADC4"
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# else
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# if defined(DEV1_PORT)
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# define DEV2_PORT 4
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# else
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# define DEV1_PORT 4
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# endif
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# endif
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#endif
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/* The number of ADC channels in the conversion list */
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/* TODO DMA */
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#define ADC1_NCHANNELS 4
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#define ADC2_NCHANNELS 3
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#define ADC3_NCHANNELS 3
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#define ADC4_NCHANNELS 1
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* DEV 1 */
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#if DEV1_PORT == 1
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#define DEV1_NCHANNELS ADC1_NCHANNELS
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/* Identifying number of each ADC channel (even if NCHANNELS is less ) */
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static const uint8_t g_chanlist1[4] =
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{
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1,
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2,
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6,
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7,
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};
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/* Configurations of pins used by each ADC channel */
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static const uint32_t g_pinlist1[4] =
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{
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GPIO_ADC1_IN1,
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GPIO_ADC1_IN2,
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GPIO_ADC1_IN6,
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GPIO_ADC1_IN7
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};
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#elif DEV1_PORT == 2
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#define DEV1_NCHANNELS ADC2_NCHANNELS
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/* Identifying number of each ADC channel */
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static const uint8_t g_chanlist1[3] =
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{
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1,
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3,
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4
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};
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/* Configurations of pins used by each ADC channel */
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static const uint32_t g_pinlist1[3] =
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{
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GPIO_ADC2_IN1,
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GPIO_ADC2_IN3,
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GPIO_ADC2_IN4
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};
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#elif DEV1_PORT == 3
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#define DEV1_NCHANNELS ADC3_NCHANNELS
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/* Identifying number of each ADC channel */
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static const uint8_t g_chanlist1[3] =
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{
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1,
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5,
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12
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};
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/* Configurations of pins used by each ADC channel */
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static const uint32_t g_pinlist1[3] =
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{
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GPIO_ADC3_IN1,
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GPIO_ADC3_IN5,
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GPIO_ADC3_IN12
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};
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#elif DEV1_PORT == 4
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#define DEV1_NCHANNELS ADC4_NCHANNELS
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/* Identifying number of each ADC channel */
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static const uint8_t g_chanlist1[1] =
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{
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3
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};
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/* Configurations of pins used by each ADC channel */
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static const uint32_t g_pinlist1[1] =
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{
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GPIO_ADC4_IN3
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};
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#endif
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#ifdef DEV2_PORT
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/* DEV 2 */
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#if DEV2_PORT == 1
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#define DEV2_NCHANNELS ADC1_NCHANNELS
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/* Identifying number of each ADC channel (even if NCHANNELS is less ) */
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static const uint8_t g_chanlist2[4] =
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{
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1,
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2,
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6,
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7
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};
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/* Configurations of pins used by each ADC channel */
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static const uint32_t g_pinlist2[4] =
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{
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GPIO_ADC1_IN1,
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GPIO_ADC1_IN2,
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GPIO_ADC1_IN6,
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GPIO_ADC1_IN7
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};
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#elif DEV2_PORT == 2
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#define DEV2_NCHANNELS ADC2_NCHANNELS
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/* Identifying number of each ADC channel */
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static const uint8_t g_chanlist2[3] =
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{
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1,
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3,
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4
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};
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/* Configurations of pins used by each ADC channel */
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static const uint32_t g_pinlist2[3] =
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{
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GPIO_ADC2_IN1,
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GPIO_ADC2_IN3,
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GPIO_ADC2_IN4
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};
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#elif DEV2_PORT == 3
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#define DEV2_NCHANNELS ADC3_NCHANNELS
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/* Identifying number of each ADC channel */
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static const uint8_t g_chanlist2[3] =
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{
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1,
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5,
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12
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};
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/* Configurations of pins used by each ADC channel */
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static const uint32_t g_pinlist2[3] =
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{
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GPIO_ADC3_IN1,
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GPIO_ADC3_IN5,
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GPIO_ADC3_IN12
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};
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#elif DEV2_PORT == 4
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#define DEV2_NCHANNELS ADC4_NCHANNELS
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/* Identifying number of each ADC channel */
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static const uint8_t g_chanlist2[1] =
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{
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3
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};
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/* Configurations of pins used by each ADC channel */
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static const uint32_t g_pinlist2[1] =
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{
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GPIO_ADC4_IN3
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};
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#endif
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#endif
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/****************************************************************************
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* Private Functions
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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: stm32_adc_setup
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*
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* Description:
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* Initialize ADC and register the ADC driver.
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*
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************************************************************************************/
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int stm32_adc_setup(void)
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{
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FAR struct adc_dev_s *adc;
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int ret;
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int i;
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/* DEV1 */
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/* Configure the pins as analog inputs for the selected channels */
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for (i = 0; i < DEV1_NCHANNELS; i++)
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{
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stm32_configgpio(g_pinlist1[i]);
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}
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/* Call stm32_adcinitialize() to get an instance of the ADC interface */
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adc = stm32_adcinitialize(DEV1_PORT, g_chanlist1, DEV1_NCHANNELS);
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if (adc == NULL)
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{
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aerr("ERROR: Failed to get ADC interface 1\n");
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return -ENODEV;
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}
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/* Register the ADC driver at "/dev/adc0" */
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ret = adc_register("/dev/adc0", adc);
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if (ret < 0)
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{
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aerr("ERROR: adc_register /dev/adc0 failed: %d\n", ret);
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return ret;
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}
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#ifdef DEV2_PORT
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/* DEV2 */
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/* Configure the pins as analog inputs for the selected channels */
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for (i = 0; i < DEV2_NCHANNELS; i++)
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{
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stm32_configgpio(g_pinlist2[i]);
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}
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/* Call stm32_adcinitialize() to get an instance of the ADC interface */
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adc = stm32_adcinitialize(DEV2_PORT, g_chanlist2, DEV2_NCHANNELS);
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if (adc == NULL)
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{
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aerr("ERROR: Failed to get ADC interface 2\n");
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return -ENODEV;
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}
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/* Register the ADC driver at "/dev/adc1" */
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ret = adc_register("/dev/adc1", adc);
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if (ret < 0)
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{
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aerr("ERROR: adc_register /dev/adc1 failed: %d\n", ret);
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return ret;
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}
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#endif
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return OK;
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}
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#endif /* CONFIG_ADC && (CONFIG_STM32_ADC1 || CONFIG_STM32_ADC2 ||
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* CONFIG_STM32_ADC3 || CONFIG_STM32_ADC4) */
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