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Started to set up GPIO registers.

This commit is contained in:
Taylor Vesely 2012-03-21 18:16:16 -06:00 committed by Piotr Esden-Tempski
parent cec41eb0c4
commit 82f89c414a
1 changed files with 70 additions and 0 deletions
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include/libopencm3/lpc17xx/gpio.h
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef LPC17XX_GPIO_H
#define LPC17XX_GPIO_H
#include <libopencm3/cm3/common.h>
#include <libopencm3/lpc17xx/memorymap.h>
/* --- Convenience macros -------------------------------------------------- */
/* GPIO port base addresses (for convenience) */
#define GPIO0 GPIO_PIO0_BASE
#define GPIO1 GPIO_PIO1_BASE
#define GPIO2 GPIO_PIO2_BASE
#define GPIO3 GPIO_PIO3_BASE
#define GPIO4 GPIO_PIO4_BASE
/* GPIO number definitions (for convenience) */
#define GPIOPIN0 (1 << 0)
/* --- GPIO registers ------------------------------------------------------ */
/* GPIO data direction register (GPIOn_DIR) */
#define GPIO_DIR(port) MMIO32(port + 0x00)
#define GPIO0_DIR GPIO_DIR(GPIO0)
#define GPIO1_DIR GPIO_DIR(GPIO1)
#define GPIO2_DIR GPIO_DIR(GPIO2)
#define GPIO3_DIR GPIO_DIR(GPIO3)
#define GPIO4_DIR GPIO_DIR(GPIO4)
/* GPIO port pin value register (GPIOn_PIN) */
#define GPIO_PIN(port) MMIO32(port + 0x14)
#define GPIO0_PIN GPIO_PIN(GPIO0)
#define GPIO1_PIN GPIO_PIN(GPIO1)
#define GPIO2_PIN GPIO_PIN(GPIO2)
#define GPIO3_PIN GPIO_PIN(GPIO3)
#define GPIO4_PIN GPIO_PIN(GPIO4)
/* GPIO port output set register (GPIOn_SET) */
#define GPIO_SET(port) MMIO32(port + 0x18)
#define GPIO0_SET GPIO_SET(GPIO0)
#define GPIO1_SET GPIO_SET(GPIO1)
#define GPIO2_SET GPIO_SET(GPIO2)
#define GPIO3_SET GPIO_SET(GPIO3)
#define GPIO4_SET GPIO_SET(GPIO4)
/* GPIO port output clear register (GPIOn_CLR) */
#define GPIO_CLR(port) MMIO32(port + 0x1C)
#define GPIO0_CLR GPIO_CLR(GPIO0)
#define GPIO1_CLR GPIO_CLR(GPIO1)
#define GPIO2_CLR GPIO_CLR(GPIO2)
#define GPIO3_CLR GPIO_CLR(GPIO3)
#define GPIO4_CLR GPIO_CLR(GPIO4)