/* * This file is part of the libopencm3 project. * * Copyright (C) 2012 chrysn * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include #include #define ISER0 MMIO32(0xE000E100) void interrupt_setup() { // These are the ports the pin interrupts for 8 and 11 are to be // configured to, and they should trigger on falling edge. GPIO_EXTIPSELH = (BUTTON0_PORT_EXTIPSEL << ((BUTTON0_PIN_NUMBER-8)*4)) | (BUTTON1_PORT_EXTIPSEL << ((BUTTON1_PIN_NUMBER-8)*4)); GPIO_EXTIFALL = BUTTON0_PIN | BUTTON1_PIN; // Enable interrupts on the GPIO side GPIO_INSENSE = GPIO_INSENSE_INT; GPIO_IEN = BUTTON0_PIN | BUTTON1_PIN; // Enable GPIO interrupts in NVIC ISER0 = (1<