75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2010 Mark Butler <mbutler@physics.otago.ac.nz>
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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_EXTI_H
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#define LIBOPENCM3_EXTI_H
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#include <libopencm3/stm32/memorymap.h>
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#include <libopencm3/cm3/common.h>
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/* --- EXTI registers ------------------------------------------------------ */
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#define EXTI_IMR MMIO32(EXTI_BASE + 0x00)
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#define EXTI_EMR MMIO32(EXTI_BASE + 0x04)
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#define EXTI_RTSR MMIO32(EXTI_BASE + 0x08)
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#define EXTI_FTSR MMIO32(EXTI_BASE + 0x0c)
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#define EXTI_SWIER MMIO32(EXTI_BASE + 0x10)
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#define EXTI_PR MMIO32(EXTI_BASE + 0x14)
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/* EXTI number definitions */
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#define EXTI0 (1 << 0)
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#define EXTI1 (1 << 1)
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#define EXTI2 (1 << 2)
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#define EXTI3 (1 << 3)
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#define EXTI4 (1 << 4)
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#define EXTI5 (1 << 5)
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#define EXTI6 (1 << 6)
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#define EXTI7 (1 << 7)
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#define EXTI8 (1 << 8)
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#define EXTI9 (1 << 9)
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#define EXTI10 (1 << 10)
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#define EXTI11 (1 << 11)
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#define EXTI12 (1 << 12)
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#define EXTI13 (1 << 13)
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#define EXTI14 (1 << 14)
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#define EXTI15 (1 << 15)
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#define EXTI16 (1 << 16)
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#define EXTI17 (1 << 17)
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#define EXTI18 (1 << 18)
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#define EXTI19 (1 << 19)
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/* Trigger types */
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typedef enum trigger_e {
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EXTI_TRIGGER_RISING,
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EXTI_TRIGGER_FALLING,
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EXTI_TRIGGER_BOTH,
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} exti_trigger_type;
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BEGIN_DECLS
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void exti_set_trigger(u32 extis, exti_trigger_type trig);
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void exti_enable_request(u32 extis);
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void exti_disable_request(u32 extis);
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void exti_reset_request(u32 extis);
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void exti_select_source(u32 exti, u32 gpioport);
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END_DECLS
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#endif
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