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authorgdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>2009-11-29 08:25:31 +0000
committergdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>2009-11-29 08:25:31 +0000
commit0d0e4d619185ad86270ca5c0212c314f7f4529d5 (patch)
treefc147672ae3e49134251d25fe82902d51ace500b /os/hal/src/pal.c
parent10bec8e1297d92e7b96d1b9932d24afb62a88fac (diff)
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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1342 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal/src/pal.c')
-rw-r--r--os/hal/src/pal.c98
1 files changed, 0 insertions, 98 deletions
diff --git a/os/hal/src/pal.c b/os/hal/src/pal.c
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--- a/os/hal/src/pal.c
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-/*
- ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file pal.c
- * @brief I/O Ports Abstraction Layer code
- * @addtogroup PAL
- * @{
- */
-
-#include "ch.h"
-#include "hal.h"
-
-#if CH_HAL_USE_PAL
-
-/**
- * @brief Read from an I/O bus.
- *
- * @param[in] bus the I/O bus, pointer to a @p IOBus structure
- * @return The bus logical states.
- *
- * @note The operation is not guaranteed to be atomic on all the architectures,
- * for atomicity and/or portability reasons you may need to enclose port
- * I/O operations between @p chSysLock() and @p chSysUnlock().
- * @note The function internally uses the @p palReadGroup() macro. The use of
- * this function is preferred when you value code size, readability and
- * error checking over speed.
- */
-ioportmask_t palReadBus(IOBus *bus) {
-
- chDbgCheck((bus != NULL) &&
- (bus->bus_offset > PAL_IOPORTS_WIDTH), "palReadBus");
-
- return palReadGroup(bus->bus_portid, bus->bus_mask, bus->bus_offset);
-}
-
-/**
- * @brief Write to an I/O bus.
- *
- * @param[in] bus the I/O bus, pointer to a @p IOBus structure
- * @param[in] bits the bits to be written on the I/O bus. Values exceeding
- * the bus width are masked so most significant bits are lost.
- *
- * @note The operation is not guaranteed to be atomic on all the architectures,
- * for atomicity and/or portability reasons you may need to enclose port
- * I/O operations between @p chSysLock() and @p chSysUnlock().
- * @note The default implementation is non atomic and not necessarily
- * optimal. Low level drivers may optimize the function by using
- * specific hardware or coding.
- */
-void palWriteBus(IOBus *bus, ioportmask_t bits) {
-
- chDbgCheck((bus != NULL) &&
- (bus->bus_offset > PAL_IOPORTS_WIDTH), "palWriteBus");
-
- palWriteGroup(bus->bus_portid, bus->bus_mask, bus->bus_offset, bits);
-}
-
-/**
- * @brief Programs a bus with the specified mode.
- *
- * @param[in] bus the I/O bus, pointer to a @p IOBus structure
- * @param[in] mode the mode
- *
- * @note The operation is not guaranteed to be atomic on all the architectures,
- * for atomicity and/or portability reasons you may need to enclose port
- * I/O operations between @p chSysLock() and @p chSysUnlock().
- * @note The default implementation is non atomic and not necessarily
- * optimal. Low level drivers may optimize the function by using
- * specific hardware or coding.
- */
-void palSetBusMode(IOBus *bus, uint_fast8_t mode) {
-
- chDbgCheck((bus != NULL) &&
- (bus->bus_offset > PAL_IOPORTS_WIDTH), "palSetBusMode");
-
- palSetGroupMode(bus->bus_portid, bus->bus_mask, mode);
-}
-
-#endif /* CH_HAL_USE_PAL */
-
-/** @} */