110 lines
3.6 KiB
C
110 lines
3.6 KiB
C
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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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/**
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* @file LPC8xx/pal_lld.c
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* @brief LPC8xx GPIO low level driver code.
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*
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* @addtogroup PAL
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* @{
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*/
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#include "ch.h"
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#include "hal.h"
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#if HAL_USE_PAL || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver exported variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver interrupt handlers. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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/**
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* @brief LPC8xx I/O ports configuration.
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* @details GPIO unit registers initialization.
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*
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* @param[in] config the LPC11xx ports configuration
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*
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* @notapi
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*/
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void _pal_lld_init(const PALConfig *config) {
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/* Enable clocks to GPIO */
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LPC_SYSCON->SYSAHBCLKCTRL |= (1<<6);
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LPC_GPIO_PORT->DIR0 = config->dir;
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LPC_GPIO_PORT->PIN0 = config->data;
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}
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/**
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* @brief Pads 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 @p PAL_MODE_UNCONNECTED is implemented as push pull output with
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* high state.
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* @note This function does not alter the @p PINSELx registers. Alternate
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* functions setup must be handled by device-specific code.
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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] mode the mode
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*
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* @notapi
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*/
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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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switch (mode)
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{
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case PAL_MODE_RESET:
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case PAL_MODE_INPUT:
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port->DIR0 &= ~mask;
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break;
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case PAL_MODE_UNCONNECTED:
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palSetPort(port, PAL_WHOLE_PORT);
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//no break
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case PAL_MODE_OUTPUT_PUSHPULL:
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port->DIR0 |= mask;
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break;
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}
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return;
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}
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#endif /* HAL_USE_PAL */
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/** @} */
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