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stm32g0: add exti.

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Regular exti, with enhanced EXTI_[FR]PR regs instead of EXTIR_PR.
This commit is contained in:
Guillaume Revaillot
2019-02-05 19:03:39 +01:00
committed by Karl Palsson
parent afd2db3097
commit 55121126c3
4 changed files with 157 additions and 0 deletions
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1
lib/stm32/g0/Makefile
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@@ -36,6 +36,7 @@ TGT_CFLAGS += $(STANDARD_FLAGS)
ARFLAGS = rcs
OBJS += exti.o exti_common_all.o
OBJS += flash.o flash_common_all.o
OBJS += gpio_common_all.o gpio_common_f0234.o
OBJS += pwr.o

71
lib/stm32/g0/exti.c Normal file
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@@ -0,0 +1,71 @@
/** @addtogroup exti_defines
*
* @author @htmlonly &copy; @endhtmlonly 2019 Guillaume Revaillot <g.revaillot@gmail.com>
*
* @date 10 January 2019
*
* LGPL License Terms @ref lgpl_license
*/
/*
* This file is part of the libopencm3 project.
*
* 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 <http://www.gnu.org/licenses/>.
*/
/**@{*/
#include <libopencm3/stm32/exti.h>
/* @brief Get the rising edge interrupt requestf flag of a given EXTI interrupt.
*
* @param[in] exti unsigned int32 Exti line.
*
* */
uint32_t exti_get_rising_flag_status(uint32_t exti)
{
return (EXTI_RPR1 & exti);
}
/* @brief Get the rising edge interrupt request flag of a given EXTI interrupt.
*
* @param[in] exti unsigned int32 Exti line.
*
* */
uint32_t exti_get_falling_flag_status(uint32_t exti)
{
return (EXTI_FPR1 & exti);
}
/* @brief Resets the rising edge interrupt request pending flag of a given EXTI interrupt.
*
* @param[in] exti unsigned int32 Exti line.
*
* */
void exti_reset_rising_request(uint32_t extis)
{
EXTI_RPR1 = extis;
}
/* @brief Resets the falling edge interrupt request pending flag of a given EXTI interrupt.
*
* @param[in] exti unsigned int32 Exti line.
*
* */
void exti_reset_falling_request(uint32_t extis)
{
EXTI_FPR1 = extis;
}
/**@}*/