git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1021 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
gdisirio
parent
e1ce260439
commit
600cf9a77d
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@ -24,6 +24,9 @@
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* @{
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*/
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#include <ch.h>
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#include <pal.h>
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/**
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* @brief Read from an I/O bus.
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*
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@ -42,7 +45,7 @@ ioportmask_t palReadBus(IOBus *bus) {
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chDbgCheck((bus != NULL) &&
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(bus->bus_offset > PAL_IOPORTS_WIDTH), "palReadBus");
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return palReadGroup(bus->bus_port, bus->bus_mask, bus->bus_offset);
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return palReadGroup(bus->bus_portid, bus->bus_mask, bus->bus_offset);
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}
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/**
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@ -64,7 +67,7 @@ void palWriteBus(IOBus *bus, ioportmask_t bits) {
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chDbgCheck((bus != NULL) &&
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(bus->bus_offset > PAL_IOPORTS_WIDTH), "palWriteBus");
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palWriteBus(bus->bus_port, bus->bus_mask, bus->bus_offset, bits);
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palWriteGroup(bus->bus_portid, bus->bus_mask, bus->bus_offset, bits);
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}
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/** @} */
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@ -60,6 +60,30 @@
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*/
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#define PAL_GROUP_MASK(width) ((ioportmask_t)(1 << (width)) - 1)
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/**
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* @brief Data part of a static I/O bus initializer.
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* @details This macro should be used when statically initializing an I/O bus
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* that is part of a bigger structure.
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*
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* @param name the name of the IOBus variable
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* @param port the I/O port descriptor
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* @param width the bus width in bits
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* @param offset the bus bit offset within the port
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*/
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#define _IOBUS_DATA(name, port, width, offset) \
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{port, PAL_GROUP_MASK(width), offset}
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/**
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* @brief Static I/O bus initializer.
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*
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* @param name the name of the IOBus variable
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* @param port the I/O port descriptor
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* @param width the bus width in bits
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* @param offset the bus bit offset within the port
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*/
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#define IOBUS_DECL(name, port, width, offset) \
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IOBus name = _IOBUS_DATA(name, port, width, offset)
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/**
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* @brief I/O bus descriptor.
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* @details This structure describes a group of contiguous digital I/O lines
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@ -1,156 +0,0 @@
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/*
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ChibiOS/RT - Copyright (C) 2006-2007 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 src/templates/ioports_lld.h
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* @brief I/O ports low level driver template
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* @addtogroup IOPortsLLD
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* @{
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*/
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#ifndef _IOPORTS_LLD_H_
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#define _IOPORTS_LLD_H_
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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 Width, in bits, of an I/O port.
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*/
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#define IOPORTS_WIDTH 32
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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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* @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, please use this
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* naming convention.
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*/
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#define IOPORT_A 0
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/*===========================================================================*/
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/* Implementation, some of the following macros could be implemented as */
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/* functions, please put them in a file named ioports_lld.c if so. */
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/*===========================================================================*/
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/**
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* @brief I/O ports subsystem initialization.
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*
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* @note This function is not invoked by a system API, it should be invoked
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* from the system initialization code.
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*/
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#define ioport_init_lld()
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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 the port identifier
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* @param[in] bits the bits to be written on the specified port
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*
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* @note This function is not meant to be invoked directly by the application
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* code.
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*/
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#define ioport_write_lld(port, bits)
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/**
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* @brief Reads an I/O port.
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*
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* @param[in] port the port identifier
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* @return the port bits
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*
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* @note This function is not meant to be invoked directly by the application
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* code.
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*/
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#define ioport_read_lld(port)
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/**
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* @brief Sets a bits mask on a I/O port.
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*
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* @param[in] port the port identifier
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* @param[in] bits the bits to be ORed on the specified port
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*
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* @note This function is not meant to be invoked directly by the application
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* code.
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*/
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#define ioport_set_lld(port, bits)
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/**
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* @brief Clears a bits mask on a I/O port.
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*
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* @param[in] port the port identifier
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* @param[in] bits the bits to be cleared on the specified port
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*
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* @note This function is not meant to be invoked directly by the application
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* code.
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*/
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#define ioport_clear_lld(port, bits)
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/**
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* @brief Toggles a bits mask on a I/O port.
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*
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* @param[in] port the port identifier
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* @param[in] bits the bits to be XORed on the specified port
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*
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* @note This function is not meant to be invoked directly by the application
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* code.
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*/
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#define ioport_toggle_lld(port, bits)
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/**
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* @brief Writes a value on an I/O bus.
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*
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* @param[in] bus the I/O bus, pointer to a @p IOBus structure
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* @param[in] bits the bits to be written on the I/O bus. Values exceeding
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* the bus width are masked so most significant bits are lost.
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*
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* @note This function is not meant to be invoked directly by the application
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* code.
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*/
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#define ioport_writebus_lld(bus, bits)
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/**
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* @brief Reads a value from an I/O bus.
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*
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* @param[in] bus the I/O bus, pointer to a @p IOBus structure
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* @return the bus bits
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*
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* @note This function is not meant to be invoked directly by the application
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* code.
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*/
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#define ioport_readbus_lld(bus)
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#endif /* _IOPORTS_LLD_H_ */
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/** @} */
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@ -0,0 +1,260 @@
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/*
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ChibiOS/RT - Copyright (C) 2006-2007 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 src/templates/pal_lld.h
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* @brief @ref PAL subsystem low level driver template
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* @addtogroup PAL_LLD
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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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/*===========================================================================*/
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/* I/O Ports Types and constants. */
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/*===========================================================================*/
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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 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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* @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 IOPORT_A 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 a file named 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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#define pal_lld_init()
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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 the port identifier
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* @return The port bits.
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*
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* @note This function is not meant to be invoked directly by the application
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* code.
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*/
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#define pal_lld_readport(port)
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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 the port identifier
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* @return The latched logical states.
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*
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* @note This function is not meant to be invoked directly by the application
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* code.
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*/
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#define pal_lld_readlatch(port)
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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 the port identifier
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* @param[in] bits the bits to be written on the specified port
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*
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* @note This function is not meant to be invoked directly by the application
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* code.
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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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*
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* @param[in] port the port identifier
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* @param[in] bits the bits to be ORed on the specified port
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*
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* @note This function is not meant to be invoked directly by the application
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* 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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#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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*
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* @param[in] port the port identifier
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* @param[in] bits the bits to be cleared on the specified port
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*
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* @note This function is not meant to be invoked directly by the application
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* 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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#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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*
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* @param[in] port the port identifier
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* @param[in] bits the bits to be XORed on the specified port
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*
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* @note This function is not meant to be invoked directly by the application
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* 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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#define pal_lld_toggleport(port, bits)
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/**
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* @brief Reads a group of bits.
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*
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* @param[in] port the port identifier
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* @param[in] mask the group mask
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* @param[in] offset the group bit offset within the port
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* @return The group logical states.
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*
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* @note This function is not meant to be invoked directly by the application
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* 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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#define pal_lld_readgroup(port, mask, offset)
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/**
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* @brief Writes a group of bits.
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*
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* @param[in] port the port identifier
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* @param[in] mask the group mask
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* @param[in] offset the group bit offset within the port
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* @param[in] bits the bits to be written. Values exceeding the group width
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* are masked.
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* @return The group logical states.
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*
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* @note This function is not meant to be invoked directly by the application
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* 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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#define pal_lld_writegroup(port, mask, offset, bits)
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/**
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* @brief Reads a logical state from an I/O pad.
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*
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* @param[in] port the port identifier
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* @param[in] pad the pad number within the port
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* @return The logical state.
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* @retval 0 low logical state.
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* @retval 1 high logical state.
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*
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* @note This function is not meant to be invoked directly by the application
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* 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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#define pal_lld_readpad(port, pad)
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/**
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* @brief Writes a logical state on an output pad.
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*
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* @param[in] port the port identifier
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* @param[in] pad the pad number within the port
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* @param[out] bit the logical value, the value must be @p 0 or @p 1
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*
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* @note This function is not meant to be invoked directly by the application
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* 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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#define pal_lld_writepad(port, pad, bit)
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/**
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* @brief Sets a pad logical state to @p 1.
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*
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* @param[in] port the port identifier
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* @param[in] pad the pad number within the port
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*
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* @note This function is not meant to be invoked directly by the application
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* 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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#define pal_lld_setpad(port, pad)
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/**
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* @brief Clears a pad logical state to @p 0.
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*
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* @param[in] port the port identifier
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* @param[in] pad the pad number within the port
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*
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* @note This function is not meant to be invoked directly by the application
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* 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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#define pal_lld_clearpad(port, pad)
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/**
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* @brief Toggles a pad logical state.
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*
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* @param[in] port the port identifier
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* @param[in] pad the pad number within the port
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*
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* @note This function is not meant to be invoked directly by the application
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* 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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#define pal_lld_togglepad(port, pad)
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#endif /* _PAL_LLD_H_ */
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/** @} */
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