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bsp_exti.cpp
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bsp_exti.cpp
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/*
* bsp-motorctrl, a board support package library for a STM32 based motor
* control PCB. It is designed to abstract access to HW features in a generic
* and simple way. Please note thet it should not conain any buissness logic.
*
* Copyright (C) 2020 Julian Friedrich
*
* 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 <https://www.gnu.org/licenses/>.
*
* You can file issues at https://github.com/fjulian79/bsp-motorctrl
*/
#include "bsp/bsp.h"
#include "bsp/bsp_exti.h"
#include "bsp/bsp_assert.h"
#include <stm32f1xx_ll_exti.h>
/**
* @brief Waek declaration of the users button irq callback.
*/
void bspButtonIrqCb(void) __attribute__((weak, alias("bspDefaultExtiCb")));
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Defnition of the default empty handler if the user has not
* implemented his own.
*
* ATTENTION: If you end up here a EXTI interrupt has occured and the user has
* not implemented the corresponding callback.
*/
void bspDefaultExtiCb(void)
{
bspDoAssert();
}
/**
* @brief Common interrupt handler for all external interrupts.
*
*/
void EXTI15_10_IRQHandler(void)
{
if(LL_EXTI_IsActiveFlag_0_31(BSP_BUTTON_EXTI_LINE) != RESET)
{
LL_EXTI_ClearFlag_0_31(BSP_BUTTON_EXTI_LINE);
bspButtonIrqCb();
}
else
{
bspDoAssert();
}
}
#ifdef __cplusplus
}
#endif
void bspExtiInit(void)
{
LL_GPIO_AF_SetEXTISource(
BSP_BUTTON_GPIO_EXTI_PORT, BSP_BUTTON_GPIO_EXTI_LINE);
LL_EXTI_EnableIT_0_31(BSP_BUTTON_EXTI_LINE);
LL_EXTI_EnableFallingTrig_0_31(BSP_BUTTON_EXTI_LINE);
NVIC_EnableIRQ(EXTI15_10_IRQn);
NVIC_SetPriority(EXTI15_10_IRQn, BSP_IRQPRIO_EXTI);
}