71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
/*
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* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of HackRF.
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*
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* This program 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, or (at your option)
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* 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; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GPIO_LPC_H__
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#define __GPIO_LPC_H__
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#include <stdint.h>
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#include "gpio.h"
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/* NOTE: libopencm3 constants and functions not used here due to naming
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* conflicts. I'd recommend changes to libopencm3 design to separate
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* register #defines and API declarations into separate header files.
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*/
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typedef struct gpio_port_t {
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volatile uint32_t dir; /* +0x000 */
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uint32_t _reserved0[31];
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volatile uint32_t mask; /* +0x080 */
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uint32_t _reserved1[31];
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volatile uint32_t pin; /* +0x100 */
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uint32_t _reserved2[31];
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volatile uint32_t mpin; /* +0x180 */
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uint32_t _reserved3[31];
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volatile uint32_t set; /* +0x200 */
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uint32_t _reserved4[31];
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volatile uint32_t clr; /* +0x280 */
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uint32_t _reserved5[31];
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volatile uint32_t not; /* +0x300 */
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} gpio_port_t;
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struct gpio_t {
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const uint32_t mask;
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gpio_port_t* const port;
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volatile uint32_t* const gpio_w;
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};
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#define GPIO_LPC_BASE (0x400f4000)
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#define GPIO_LPC_B_OFFSET (0x0)
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#define GPIO_LPC_W_OFFSET (0x1000)
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#define GPIO_LPC_PORT_OFFSET (0x2000)
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#define GPIO_LPC_PORT(_n) ((gpio_port_t*)((GPIO_LPC_BASE + GPIO_LPC_PORT_OFFSET) + (_n) * 4))
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#define GPIO_LPC_W(_port_num, _pin_num) (volatile uint32_t*)((GPIO_LPC_BASE + GPIO_LPC_W_OFFSET) + ((_port_num) * 0x80) + ((_pin_num) * 4))
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#define GPIO(_port_num, _pin_num) { \
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.mask = (1UL << (_pin_num)), \
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.port = GPIO_LPC_PORT(_port_num), \
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.gpio_w = GPIO_LPC_W(_port_num, _pin_num), \
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}
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#endif/*__GPIO_LPC_H__*/
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