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Diffstat (limited to 'examples/stm32f1/stm32-h103/exti_rising_falling/exti_rising_falling.c')
-rw-r--r--examples/stm32f1/stm32-h103/exti_rising_falling/exti_rising_falling.c98
1 files changed, 0 insertions, 98 deletions
diff --git a/examples/stm32f1/stm32-h103/exti_rising_falling/exti_rising_falling.c b/examples/stm32f1/stm32-h103/exti_rising_falling/exti_rising_falling.c
deleted file mode 100644
index b3c47ee..0000000
--- a/examples/stm32f1/stm32-h103/exti_rising_falling/exti_rising_falling.c
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * This file is part of the libopencm3 project.
- *
- * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>,
- * 2010 Piotr Esden-Tempski <piotr@esden.net>
- *
- * 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 <http://www.gnu.org/licenses/>.
- */
-
-#include <libopencm3/stm32/f1/rcc.h>
-#include <libopencm3/stm32/f1/gpio.h>
-#include <libopencm3/stm32/nvic.h>
-#include <libopencm3/stm32/exti.h>
-
-#define FALLING 0
-#define RISING 1
-
-u16 exti_direction = FALLING;
-
-/* Set STM32 to 72 MHz. */
-void clock_setup(void)
-{
- rcc_clock_setup_in_hse_8mhz_out_72mhz();
-
-}
-
-void gpio_setup(void)
-{
- /* Enable GPIOC clock. */
- rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
-
- /* Set GPIO12 (in GPIO port C) to 'output push-pull'. */
- gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
- GPIO_CNF_OUTPUT_PUSHPULL, GPIO12);
-}
-
-void exti_setup(void)
-{
- /* Enable GPIOA clock. */
- rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
-
- /* Enable AFIO clock. */
- rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
-
- /* Enable EXTI0 interrupt */
- nvic_enable_irq(NVIC_EXTI0_IRQ);
-
- /* Set GPIO0 (in GPIO port A) to 'input open-drain'. */
- gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
- GPIO_CNF_INPUT_FLOAT, GPIO0);
-
- /* configure EXTI subsystem */
- exti_select_source(EXTI0, GPIOA);
- exti_direction = FALLING;
- exti_set_trigger(EXTI0, EXTI_TRIGGER_FALLING);
- exti_enable_request(EXTI0);
-}
-
-void exti0_isr()
-{
- exti_reset_request(EXTI0);
-
- if (exti_direction == FALLING) {
- gpio_set(GPIOC, GPIO12);
- exti_direction = RISING;
- exti_set_trigger(EXTI0, EXTI_TRIGGER_RISING);
- } else {
- gpio_clear(GPIOC, GPIO12);
- exti_direction = FALLING;
- exti_set_trigger(EXTI0, EXTI_TRIGGER_FALLING);
- }
-}
-
-int main(void)
-{
-
- clock_setup();
- gpio_setup();
- exti_setup();
-
- /* Blink the LED (PC12) on the board. */
- while (1) {
- __asm("nop");
- }
-
- return 0;
-}