/* * This file is part of the libopencm3 project. * * Copyright (C) 2010 Mark Butler * * 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 . */ #ifndef LIBOPENCM3_EXTI_H #define LIBOPENCM3_EXTI_H #include #include /* --- EXTI registers ------------------------------------------------------ */ #define EXTI_IMR MMIO32(EXTI_BASE + 0x00) #define EXTI_EMR MMIO32(EXTI_BASE + 0x04) #define EXTI_RTSR MMIO32(EXTI_BASE + 0x08) #define EXTI_FTSR MMIO32(EXTI_BASE + 0x0c) #define EXTI_SWIER MMIO32(EXTI_BASE + 0x10) #define EXTI_PR MMIO32(EXTI_BASE + 0x14) /* EXTI number definitions */ #define EXTI0 (1 << 0) #define EXTI1 (1 << 1) #define EXTI2 (1 << 2) #define EXTI3 (1 << 3) #define EXTI4 (1 << 4) #define EXTI5 (1 << 5) #define EXTI6 (1 << 6) #define EXTI7 (1 << 7) #define EXTI8 (1 << 8) #define EXTI9 (1 << 9) #define EXTI10 (1 << 10) #define EXTI11 (1 << 11) #define EXTI12 (1 << 12) #define EXTI13 (1 << 13) #define EXTI14 (1 << 14) #define EXTI15 (1 << 15) #define EXTI16 (1 << 16) #define EXTI17 (1 << 17) #define EXTI18 (1 << 18) #define EXTI19 (1 << 19) #define EXTI20 (1 << 20) #define EXTI21 (1 << 21) #define EXTI22 (1 << 22) /* Trigger types */ typedef enum trigger_e { EXTI_TRIGGER_RISING, EXTI_TRIGGER_FALLING, EXTI_TRIGGER_BOTH, } exti_trigger_type; BEGIN_DECLS void exti_set_trigger(u32 extis, exti_trigger_type trig); void exti_enable_request(u32 extis); void exti_disable_request(u32 extis); void exti_reset_request(u32 extis); void exti_select_source(u32 exti, u32 gpioport); u32 exti_get_flag_status(u32 exti); END_DECLS #endif