98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/**
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* \file
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* <!--
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* This file is part of BeRTOS.
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*
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* Bertos 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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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*
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* As a special exception, you may use this file as part of a free software
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* library without restriction. Specifically, if other files instantiate
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* templates or use macros or inline functions from this file, or you compile
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* this file and link it with other files to produce an executable, this
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* file does not by itself cause the resulting executable to be covered by
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* the GNU General Public License. This exception does not however
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* invalidate any other reasons why the executable file might be covered by
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* the GNU General Public License.
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*
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* Copyright 2010 Develer S.r.l. (http://www.develer.com/)
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*
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* -->
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*
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* \brief LM3S1968 GPIO control interface.
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*/
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#ifndef GPIO_LM3S_H
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#define GPIO_LM3S_H
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#include <io/lm3s.h>
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/**
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* GPIO mode
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*/
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/*\{*/
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enum
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{
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GPIO_DIR_MODE_IN = 0, //< Pin is a GPIO input
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GPIO_DIR_MODE_OUT, //< Pin is a GPIO output
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GPIO_DIR_MODE_HW, //< Pin is a peripheral function
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};
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/*\}*/
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/**
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* GPIO strenght
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*/
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/*\{*/
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enum
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{
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GPIO_STRENGTH_2MA = 0, //< 2mA drive strength
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GPIO_STRENGTH_4MA, //< 4mA drive strength
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GPIO_STRENGTH_8MA, //< 8mA drive strength
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GPIO_STRENGTH_8MA_SC, //< 8mA drive with slew rate control
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};
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/*\}*/
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/**
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* GPIO type
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*/
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/*\{*/
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enum
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{
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GPIO_PIN_TYPE_ANALOG = 0, //< Analog comparator
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GPIO_PIN_TYPE_STD, //< Push-pull
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GPIO_PIN_TYPE_STD_WPU, //< Push-pull with weak pull-up
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GPIO_PIN_TYPE_STD_WPD, //< Push-pull with weak pull-down
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GPIO_PIN_TYPE_OD, //< Open-drain
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GPIO_PIN_TYPE_OD_WPU, //< Open-drain with weak pull-up
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GPIO_PIN_TYPE_OD_WPD, //< Open-drain with weak pull-down
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};
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/*\}*/
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/* Write a value to the specified pin(s) */
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INLINE void lm3s_gpioPinWrite(uint32_t port, uint8_t pins, uint8_t val)
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{
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HWREG(port + GPIO_O_DATA + (pins << 2)) = val;
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}
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/* Read a value from the specified pin(s) */
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INLINE uint32_t lm3s_gpioPinRead(uint32_t port, uint8_t pins)
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{
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return HWREG(port + GPIO_O_DATA + (pins << 2));
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}
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int lm3s_gpioPinConfig(uint32_t port, uint8_t pins,
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uint32_t mode, uint32_t strength, uint32_t type);
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#endif /* GPIO_LM3S_H */
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