112 lines
3.7 KiB
C
112 lines
3.7 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2015 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 LPC214x/pal_lld.c
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* @brief LPC214x FIO 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 "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 and types. */
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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 LPC214x I/O ports configuration.
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* @details FIO units and PINSEL registers initialization.
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*
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* @param[in] config the LPC214x 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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/* Enables the access through the fast registers.*/
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SCS = 3;
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/* I/O pads initial assignment, device drivers may change this setup at a
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* later time.*/
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PINSEL0 = config->pinsel0;
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PINSEL1 = config->pinsel1;
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PINSEL2 = config->pinsel2;
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/* I/O pads direction initial setting.*/
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FIO0Base->FIO_MASK = 0;
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FIO0Base->FIO_PIN = config->P0Data.pin;
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FIO0Base->FIO_DIR = config->P0Data.dir;
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FIO1Base->FIO_MASK = 0;
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FIO1Base->FIO_PIN = config->P1Data.pin;
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FIO1Base->FIO_DIR = config->P1Data.dir;
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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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case PAL_MODE_RESET:
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case PAL_MODE_INPUT:
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port->FIO_DIR &= ~mask;
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break;
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case PAL_MODE_UNCONNECTED:
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port->FIO_PIN |= mask;
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case PAL_MODE_OUTPUT_PUSHPULL:
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port->FIO_DIR |= mask;
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break;
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}
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}
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#endif /* HAL_USE_PAL */
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/** @} */
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