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ChibiOS 2.6.8, until I can figure out where to get it from git.
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Jared Boone
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1929 changed files with 575326 additions and 0 deletions
316
firmware/chibios/os/hal/include/adc.h
Executable file
316
firmware/chibios/os/hal/include/adc.h
Executable file
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/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012,2013 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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---
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A special exception to the GPL can be applied should you wish to distribute
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a combined work that includes ChibiOS/RT, without being obliged to provide
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the source code for any proprietary components. See the file exception.txt
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for full details of how and when the exception can be applied.
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*/
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/**
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* @file adc.h
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* @brief ADC Driver macros and structures.
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*
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* @addtogroup ADC
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* @{
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*/
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#ifndef _ADC_H_
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#define _ADC_H_
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#if HAL_USE_ADC || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/**
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* @name ADC configuration options
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* @{
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*/
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/**
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* @brief Enables synchronous APIs.
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* @note Disabling this option saves both code and data space.
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*/
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#if !defined(ADC_USE_WAIT) || defined(__DOXYGEN__)
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#define ADC_USE_WAIT TRUE
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#endif
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/**
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* @brief Enables the @p adcAcquireBus() and @p adcReleaseBus() APIs.
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* @note Disabling this option saves both code and data space.
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*/
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#if !defined(ADC_USE_MUTUAL_EXCLUSION) || defined(__DOXYGEN__)
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#define ADC_USE_MUTUAL_EXCLUSION TRUE
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#endif
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/** @} */
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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#if ADC_USE_MUTUAL_EXCLUSION && !CH_USE_MUTEXES && !CH_USE_SEMAPHORES
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#error "ADC_USE_MUTUAL_EXCLUSION requires CH_USE_MUTEXES and/or CH_USE_SEMAPHORES"
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#endif
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/**
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* @brief Driver state machine possible states.
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*/
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typedef enum {
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ADC_UNINIT = 0, /**< Not initialized. */
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ADC_STOP = 1, /**< Stopped. */
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ADC_READY = 2, /**< Ready. */
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ADC_ACTIVE = 3, /**< Converting. */
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ADC_COMPLETE = 4, /**< Conversion complete. */
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ADC_ERROR = 5 /**< Conversion complete. */
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} adcstate_t;
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#include "adc_lld.h"
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/*===========================================================================*/
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/* Driver macros. */
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/*===========================================================================*/
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/**
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* @name Low Level driver helper macros
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* @{
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*/
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#if ADC_USE_WAIT || defined(__DOXYGEN__)
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/**
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* @brief Resumes a thread waiting for a conversion completion.
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*
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* @param[in] adcp pointer to the @p ADCDriver object
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*
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* @notapi
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*/
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#define _adc_reset_i(adcp) { \
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if ((adcp)->thread != NULL) { \
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Thread *tp = (adcp)->thread; \
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(adcp)->thread = NULL; \
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tp->p_u.rdymsg = RDY_RESET; \
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chSchReadyI(tp); \
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} \
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}
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/**
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* @brief Resumes a thread waiting for a conversion completion.
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*
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* @param[in] adcp pointer to the @p ADCDriver object
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*
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* @notapi
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*/
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#define _adc_reset_s(adcp) { \
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if ((adcp)->thread != NULL) { \
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Thread *tp = (adcp)->thread; \
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(adcp)->thread = NULL; \
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chSchWakeupS(tp, RDY_RESET); \
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} \
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}
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/**
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* @brief Wakes up the waiting thread.
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*
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* @param[in] adcp pointer to the @p ADCDriver object
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*
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* @notapi
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*/
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#define _adc_wakeup_isr(adcp) { \
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chSysLockFromIsr(); \
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if ((adcp)->thread != NULL) { \
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Thread *tp; \
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tp = (adcp)->thread; \
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(adcp)->thread = NULL; \
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tp->p_u.rdymsg = RDY_OK; \
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chSchReadyI(tp); \
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} \
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chSysUnlockFromIsr(); \
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}
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/**
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* @brief Wakes up the waiting thread with a timeout message.
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*
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* @param[in] adcp pointer to the @p ADCDriver object
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*
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* @notapi
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*/
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#define _adc_timeout_isr(adcp) { \
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chSysLockFromIsr(); \
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if ((adcp)->thread != NULL) { \
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Thread *tp; \
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tp = (adcp)->thread; \
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(adcp)->thread = NULL; \
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tp->p_u.rdymsg = RDY_TIMEOUT; \
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chSchReadyI(tp); \
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} \
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chSysUnlockFromIsr(); \
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}
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#else /* !ADC_USE_WAIT */
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#define _adc_reset_i(adcp)
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#define _adc_reset_s(adcp)
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#define _adc_wakeup_isr(adcp)
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#define _adc_timeout_isr(adcp)
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#endif /* !ADC_USE_WAIT */
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/**
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* @brief Common ISR code, half buffer event.
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* @details This code handles the portable part of the ISR code:
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* - Callback invocation.
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* .
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* @note This macro is meant to be used in the low level drivers
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* implementation only.
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*
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* @param[in] adcp pointer to the @p ADCDriver object
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*
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* @notapi
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*/
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#define _adc_isr_half_code(adcp) { \
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if ((adcp)->grpp->end_cb != NULL) { \
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(adcp)->grpp->end_cb(adcp, (adcp)->samples, (adcp)->depth / 2); \
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} \
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}
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/**
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* @brief Common ISR code, full buffer event.
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* @details This code handles the portable part of the ISR code:
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* - Callback invocation.
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* - Waiting thread wakeup, if any.
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* - Driver state transitions.
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* .
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* @note This macro is meant to be used in the low level drivers
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* implementation only.
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*
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* @param[in] adcp pointer to the @p ADCDriver object
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*
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* @notapi
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*/
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#define _adc_isr_full_code(adcp) { \
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if ((adcp)->grpp->circular) { \
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/* Callback handling.*/ \
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if ((adcp)->grpp->end_cb != NULL) { \
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if ((adcp)->depth > 1) { \
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/* Invokes the callback passing the 2nd half of the buffer.*/ \
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size_t half = (adcp)->depth / 2; \
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size_t half_index = half * (adcp)->grpp->num_channels; \
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(adcp)->grpp->end_cb(adcp, (adcp)->samples + half_index, half); \
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} \
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else { \
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/* Invokes the callback passing the whole buffer.*/ \
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(adcp)->grpp->end_cb(adcp, (adcp)->samples, (adcp)->depth); \
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} \
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} \
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} \
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else { \
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/* End conversion.*/ \
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adc_lld_stop_conversion(adcp); \
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if ((adcp)->grpp->end_cb != NULL) { \
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(adcp)->state = ADC_COMPLETE; \
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/* Invoke the callback passing the whole buffer.*/ \
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(adcp)->grpp->end_cb(adcp, (adcp)->samples, (adcp)->depth); \
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if ((adcp)->state == ADC_COMPLETE) { \
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(adcp)->state = ADC_READY; \
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(adcp)->grpp = NULL; \
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} \
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} \
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else { \
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(adcp)->state = ADC_READY; \
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(adcp)->grpp = NULL; \
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} \
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_adc_wakeup_isr(adcp); \
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} \
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}
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/**
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* @brief Common ISR code, error event.
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* @details This code handles the portable part of the ISR code:
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* - Callback invocation.
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* - Waiting thread timeout signaling, if any.
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* - Driver state transitions.
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* .
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* @note This macro is meant to be used in the low level drivers
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* implementation only.
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*
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* @param[in] adcp pointer to the @p ADCDriver object
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* @param[in] err platform dependent error code
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*
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* @notapi
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*/
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#define _adc_isr_error_code(adcp, err) { \
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adc_lld_stop_conversion(adcp); \
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if ((adcp)->grpp->error_cb != NULL) { \
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(adcp)->state = ADC_ERROR; \
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(adcp)->grpp->error_cb(adcp, err); \
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if ((adcp)->state == ADC_ERROR) \
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(adcp)->state = ADC_READY; \
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} \
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(adcp)->grpp = NULL; \
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_adc_timeout_isr(adcp); \
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}
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/** @} */
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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void adcInit(void);
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void adcObjectInit(ADCDriver *adcp);
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void adcStart(ADCDriver *adcp, const ADCConfig *config);
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void adcStop(ADCDriver *adcp);
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void adcStartConversion(ADCDriver *adcp,
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const ADCConversionGroup *grpp,
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adcsample_t *samples,
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size_t depth);
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void adcStartConversionI(ADCDriver *adcp,
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const ADCConversionGroup *grpp,
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adcsample_t *samples,
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size_t depth);
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void adcStopConversion(ADCDriver *adcp);
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void adcStopConversionI(ADCDriver *adcp);
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#if ADC_USE_WAIT
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msg_t adcConvert(ADCDriver *adcp,
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const ADCConversionGroup *grpp,
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adcsample_t *samples,
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size_t depth);
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#endif
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#if ADC_USE_MUTUAL_EXCLUSION || defined(__DOXYGEN__)
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void adcAcquireBus(ADCDriver *adcp);
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void adcReleaseBus(ADCDriver *adcp);
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#endif /* ADC_USE_MUTUAL_EXCLUSION */
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#ifdef __cplusplus
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}
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#endif
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#endif /* HAL_USE_ADC */
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#endif /* _ADC_H_ */
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/** @} */
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