2e1cbcae22
This adds GPIO module support. GPIO can be controlled using the GPIO number as stated in the reference manual, similar to Linux. Also 32-bit access to whole ports is possible. Reading a GPIO is possible without muxing the pad as GPIO, however writing a GPIO needs the pad to be muxed as GPIO.
81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
/** @defgroup VF6xx_gpio_defines GPIO Defines
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*
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* @brief <b>Defined Constants and Types for the VF6xx GPIO Module</b>
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*
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* @ingroup VF6xx_defines
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*
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* @version 1.0.0
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*
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* @author @htmlonly © @endhtmlonly 2014
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* Stefan Agner <stefan@agner.ch>
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*
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* @date 03 July 2014
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*
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* LGPL License Terms @ref lgpl_license
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* */
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/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2014 Stefan Agner <stefan@agner.ch>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser 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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*
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* This library 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LIBOPENCM3_VF6XX_GPIO_H
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#define LIBOPENCM3_VF6XX_GPIO_H
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#include <libopencm3/cm3/common.h>
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#include <libopencm3/vf6xx/memorymap.h>
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/* --- Convenience macros -------------------------------------------------- */
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/****************************************************************************/
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/** @defgroup gpio_reg_base GPIO register base addresses
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@ingroup VF6xx_gpio_defines
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@{*/
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#define GPIO(port) (GPIO_BASE + (0x040 * (port)))
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#define GPIO0 (GPIO_BASE + 0x000)
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#define GPIO1 (GPIO_BASE + 0x040)
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#define GPIO2 (GPIO_BASE + 0x080)
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#define GPIO3 (GPIO_BASE + 0x0C0)
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#define GPIO4 (GPIO_BASE + 0x100)
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#define GPIO_OFFSET(gpio) (0x1 << (gpio % 32))
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/* --- GPIO registers ------------------------------------------------------ */
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#define GPIO_PDOR(gpio_base) MMIO32(gpio_base + 0x00)
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#define GPIO_PSOR(gpio_base) MMIO32(gpio_base + 0x04)
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#define GPIO_PCOR(gpio_base) MMIO32(gpio_base + 0x08)
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#define GPIO_PTOR(gpio_base) MMIO32(gpio_base + 0x0C)
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#define GPIO_PDIR(gpio_base) MMIO32(gpio_base + 0x10)
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/* --- Function prototypes ------------------------------------------------- */
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#include <libopencm3/cm3/common.h>
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BEGIN_DECLS
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void gpio_set(uint32_t gpio);
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void gpio_clear(uint32_t gpio);
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bool gpio_get(uint32_t gpio);
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void gpio_toggle(uint32_t gpio);
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uint32_t gpio_port_read(uint32_t gpioport);
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void gpio_port_write(uint32_t gpioport, uint32_t data);
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END_DECLS
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#endif
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