60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/* 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 3 of the License, or
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* (at your option) 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. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/* Copyright (c) 2016 King Kévin <kingkevin@cuvoodoo.info> */
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#include <libopencm3/stm32/gpio.h> // GPIO defines
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#include <libopencm3/cm3/nvic.h> // interrupt defines
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#include <libopencm3/stm32/exti.h> // external interrupt defines
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/* get the length of an array */
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#define LENGTH(x) (sizeof(x) / sizeof((x)[0]))
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/* system clock frequency in Hz */
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#define SYSTEM_CLOCK_FREQ 72000000
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/* LED pin */
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#ifdef SYSTEM_BOARD
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/* on system board LED is on pin 11/PA1 */
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#define LED_RCC RCC_GPIOA
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#define LED_PORT GPIOA
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#define LED_PIN GPIO1
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#elif MAPLE_MINI
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/* on maple mini LED is on pin 19/PB1 */
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#define LED_RCC RCC_GPIOB
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#define LED_PORT GPIOB
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#define LED_PIN GPIO1
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#endif
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/* user button */
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#ifdef MAPLE_MINI
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/* on maple mini button is on 32/PB8 */
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#define BUTTON_RCC RCC_GPIOB
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#define BUTTON_PORT GPIOB
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#define BUTTON_PIN GPIO8
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#define BUTTON_EXTI EXTI8
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#define BUTTON_IRQ NVIC_EXTI9_5_IRQ
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#define BUTTON_ISR exti9_5_isr
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#endif
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/* switch on LED */
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void led_on(void);
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/* switch off LED */
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void led_off(void);
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/* toggle LED */
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void led_toggle(void);
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/* default output (i.e. for printf) */
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int _write(int file, char *ptr, int len);
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