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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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330
firmware/chibios/os/hal/templates/pal_lld.h
Executable file
330
firmware/chibios/os/hal/templates/pal_lld.h
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/*
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ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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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,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* @file templates/pal_lld.h
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* @brief PAL subsystem low level driver header template.
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*
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* @addtogroup PAL
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* @{
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*/
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#ifndef _PAL_LLD_H_
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#define _PAL_LLD_H_
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#if HAL_USE_PAL || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Unsupported modes and specific modes */
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/*===========================================================================*/
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/*===========================================================================*/
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/* I/O Ports Types and constants. */
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/*===========================================================================*/
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/**
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* @brief Generic I/O ports static initializer.
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* @details An instance of this structure must be passed to @p palInit() at
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* system startup time in order to initialized the digital I/O
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* subsystem. This represents only the initial setup, specific pads
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* or whole ports can be reprogrammed at later time.
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* @note Implementations may extend this structure to contain more,
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* architecture dependent, fields.
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*/
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typedef struct {
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} PALConfig;
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/**
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* @brief Width, in bits, of an I/O port.
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*/
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#define PAL_IOPORTS_WIDTH 32
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/**
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* @brief Whole port mask.
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* @brief This macro specifies all the valid bits into a port.
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*/
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#define PAL_WHOLE_PORT ((ioportmask_t)0xFFFFFFFF)
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/**
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* @brief Digital I/O port sized unsigned type.
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*/
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typedef uint32_t ioportmask_t;
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/**
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* @brief Digital I/O modes.
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*/
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typedef uint32_t iomode_t;
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/**
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* @brief Port Identifier.
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* @details This type can be a scalar or some kind of pointer, do not make
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* any assumption about it, use the provided macros when populating
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* variables of this type.
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*/
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typedef uint32_t ioportid_t;
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/*===========================================================================*/
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/* I/O Ports Identifiers. */
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/*===========================================================================*/
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/**
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* @brief First I/O port identifier.
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* @details Low level drivers can define multiple ports, it is suggested to
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* use this naming convention.
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*/
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#define IOPORT1 0
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/*===========================================================================*/
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/* Implementation, some of the following macros could be implemented as */
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/* functions, if so please put them in pal_lld.c. */
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/*===========================================================================*/
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/**
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* @brief Low level PAL subsystem initialization.
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*
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* @param[in] config architecture-dependent ports configuration
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*
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* @notapi
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*/
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#define pal_lld_init(config) _pal_lld_init(config)
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/**
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* @brief Reads the physical I/O port states.
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*
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* @param[in] port port identifier
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* @return The port bits.
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*
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* @notapi
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*/
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#define pal_lld_readport(port) 0
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/**
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* @brief Reads the output latch.
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* @details The purpose of this function is to read back the latched output
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* value.
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*
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* @param[in] port port identifier
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* @return The latched logical states.
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*
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* @notapi
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*/
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#define pal_lld_readlatch(port) 0
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/**
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* @brief Writes a bits mask on a I/O port.
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*
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* @param[in] port port identifier
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* @param[in] bits bits to be written on the specified port
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*
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* @notapi
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*/
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#define pal_lld_writeport(port, bits)
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/**
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* @brief Sets a bits mask on a I/O port.
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* @note The @ref PAL provides a default software implementation of this
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* functionality, implement this function if can optimize it by using
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* special hardware functionalities or special coding.
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*
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* @param[in] port port identifier
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* @param[in] bits bits to be ORed on the specified port
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*
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* @notapi
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*/
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#define pal_lld_setport(port, bits)
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/**
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* @brief Clears a bits mask on a I/O port.
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* @note The @ref PAL provides a default software implementation of this
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* functionality, implement this function if can optimize it by using
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* special hardware functionalities or special coding.
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*
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* @param[in] port port identifier
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* @param[in] bits bits to be cleared on the specified port
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*
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* @notapi
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*/
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#define pal_lld_clearport(port, bits)
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/**
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* @brief Toggles a bits mask on a I/O port.
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* @note The @ref PAL provides a default software implementation of this
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* functionality, implement this function if can optimize it by using
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* special hardware functionalities or special coding.
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*
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* @param[in] port port identifier
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* @param[in] bits bits to be XORed on the specified port
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*
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* @notapi
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*/
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#define pal_lld_toggleport(port, bits)
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/**
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* @brief Reads a group of bits.
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* @note The @ref PAL provides a default software implementation of this
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* functionality, implement this function if can optimize it by using
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* special hardware functionalities or special coding.
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*
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* @param[in] port port identifier
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* @param[in] mask group mask
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* @param[in] offset group bit offset within the port
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* @return The group logical states.
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*
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* @notapi
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*/
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#define pal_lld_readgroup(port, mask, offset) 0
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/**
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* @brief Writes a group of bits.
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* @note The @ref PAL provides a default software implementation of this
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* functionality, implement this function if can optimize it by using
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* special hardware functionalities or special coding.
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*
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* @param[in] port port identifier
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* @param[in] mask group mask
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* @param[in] offset group bit offset within the port
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* @param[in] bits bits to be written. Values exceeding the group width
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* are masked.
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*
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* @notapi
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*/
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#define pal_lld_writegroup(port, mask, offset, bits) (void)bits
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/**
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* @brief Pads group mode setup.
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* @details This function programs a pads group belonging to the same port
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* with the specified mode.
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* @note Programming an unknown or unsupported mode is silently ignored.
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*
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* @param[in] port port identifier
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* @param[in] mask group mask
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* @param[in] offset group bit offset within the port
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* @param[in] mode group mode
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*
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* @notapi
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*/
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#define pal_lld_setgroupmode(port, mask, offset, mode) \
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_pal_lld_setgroupmode(port, mask << offset, mode)
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/**
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* @brief Reads a logical state from an I/O pad.
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* @note The @ref PAL provides a default software implementation of this
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* functionality, implement this function if can optimize it by using
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* special hardware functionalities or special coding.
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*
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* @param[in] port port identifier
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* @param[in] pad pad number within the port
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* @return The logical state.
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* @retval PAL_LOW low logical state.
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* @retval PAL_HIGH high logical state.
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*
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* @notapi
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*/
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#define pal_lld_readpad(port, pad) PAL_LOW
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/**
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* @brief Writes a logical state on an output pad.
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* @note This function is not meant to be invoked directly by the
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* application code.
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* @note The @ref PAL provides a default software implementation of this
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* functionality, implement this function if can optimize it by using
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* special hardware functionalities or special coding.
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*
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* @param[in] port port identifier
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* @param[in] pad pad number within the port
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* @param[in] bit logical value, the value must be @p PAL_LOW or
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* @p PAL_HIGH
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*
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* @notapi
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*/
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#define pal_lld_writepad(port, pad, bit)
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/**
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* @brief Sets a pad logical state to @p PAL_HIGH.
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* @note The @ref PAL provides a default software implementation of this
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* functionality, implement this function if can optimize it by using
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* special hardware functionalities or special coding.
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*
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* @param[in] port port identifier
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* @param[in] pad pad number within the port
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*
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* @notapi
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*/
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#define pal_lld_setpad(port, pad)
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/**
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* @brief Clears a pad logical state to @p PAL_LOW.
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* @note The @ref PAL provides a default software implementation of this
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* functionality, implement this function if can optimize it by using
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* special hardware functionalities or special coding.
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*
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* @param[in] port port identifier
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* @param[in] pad pad number within the port
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*
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* @notapi
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*/
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#define pal_lld_clearpad(port, pad)
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/**
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* @brief Toggles a pad logical state.
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* @note The @ref PAL provides a default software implementation of this
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* functionality, implement this function if can optimize it by using
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* special hardware functionalities or special coding.
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*
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* @param[in] port port identifier
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* @param[in] pad pad number within the port
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*
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* @notapi
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*/
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#define pal_lld_togglepad(port, pad)
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/**
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* @brief Pad mode setup.
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* @details This function programs a pad with the specified mode.
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* @note The @ref PAL provides a default software implementation of this
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* functionality, implement this function if can optimize it by using
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* special hardware functionalities or special coding.
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* @note Programming an unknown or unsupported mode is silently ignored.
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*
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* @param[in] port port identifier
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* @param[in] pad pad number within the port
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* @param[in] mode pad mode
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*
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* @notapi
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*/
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#define pal_lld_setpadmode(port, pad, mode)
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#if !defined(__DOXYGEN__)
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extern const PALConfig pal_default_config;
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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void _pal_lld_init(const PALConfig *config);
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void _pal_lld_setgroupmode(ioportid_t port,
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ioportmask_t mask,
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iomode_t mode);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HAL_USE_PAL */
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#endif /* _PAL_LLD_H_ */
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/** @} */
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