201 lines
5.7 KiB
C
201 lines
5.7 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 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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/**
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* @file STM8/pal_lld.h
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* @brief STM8 GPIO low level driver header.
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*
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* @addtogroup STM8_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 CH_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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typedef struct {
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volatile uint8_t ODR;
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volatile uint8_t IDR;
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volatile uint8_t DDR;
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volatile uint8_t CR1;
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volatile uint8_t CR2;
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} gpio_t;
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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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*/
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typedef struct {
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gpio_t P[9];
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} STM8GPIOConfig;
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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 Port Identifier.
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*/
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typedef gpio_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 GPIO ports as a whole.
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*/
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#define IOPORTS ((STM8GPIOConfig *)0x5000)
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/**
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* @brief GPIO port A identifier.
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*/
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#define IOPORT1 ((gpio_t *)0x5000)
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/**
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* @brief GPIO port B identifier.
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*/
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#define IOPORT2 ((gpio_t *)0x5005)
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/**
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* @brief GPIO port C identifier.
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*/
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#define IOPORT3 ((gpio_t *)0x500A)
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/**
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* @brief GPIO port D identifier.
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*/
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#define IOPORT4 ((gpio_t *)0x500F)
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/**
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* @brief GPIO port E identifier.
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*/
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#define IOPORT5 ((gpio_t *)0x5014)
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/**
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* @brief GPIO port F identifier.
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*/
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#define IOPORT6 ((gpio_t *)0x5019)
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/**
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* @brief GPIO port G identifier.
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*/
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#define IOPORT7 ((gpio_t *)0x501E)
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/**
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* @brief GPIO port H identifier.
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*/
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#define IOPORT8 ((gpio_t *)0x5023)
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/**
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* @brief GPIO port I identifier.
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*/
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#define IOPORT9 ((gpio_t *)0x5028)
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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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#define pal_lld_init(config) *IOPORTS = *(config)
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/**
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* @brief Reads the physical I/O port states.
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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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*
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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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#define pal_lld_readport(port) ((port)->IDR)
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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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* @note This function is not meant to be invoked directly by the
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* application code.
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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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#define pal_lld_readlatch(port) ((port)->ODR)
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/**
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* @brief Writes a bits mask on a I/O port.
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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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*
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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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#define pal_lld_writeport(port, bits) ((port)->ODR = (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 This function is not meant to be invoked directly by the
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* application code.
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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] mode group mode
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*/
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#define pal_lld_setgroupmode(port, mask, mode) ((void)(mode))
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extern const STM8GPIOConfig pal_default_config;
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#endif /* CH_HAL_USE_PAL */
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#endif /* _PAL_LLD_H_ */
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/** @} */
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