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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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2
include/libopencm3/stm32/exti.h
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@@ -40,6 +40,8 @@
# include <libopencm3/stm32/l1/exti.h> # include <libopencm3/stm32/l1/exti.h>
#elif defined(STM32L4) #elif defined(STM32L4)
# include <libopencm3/stm32/l4/exti.h> # include <libopencm3/stm32/l4/exti.h>
#elif defined(STM32G0)
# include <libopencm3/stm32/g0/exti.h>
#else #else
# error "stm32 family not defined." # error "stm32 family not defined."
#endif #endif

83
include/libopencm3/stm32/g0/exti.h Normal file
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@@ -0,0 +1,83 @@
/** @defgroup exti_defines EXTI Defines
*
* @ingroup STM32G0xx_defines
*
* @brief <b>Defined Constants and Types for the STM32G0xx EXTI Control</b>
*
* @version 1.0.0
*
* 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/>.
*/
/**@{*/
#ifndef LIBOPENCM3_EXTI_H
#define LIBOPENCM3_EXTI_H
#include <libopencm3/stm32/common/exti_common_all.h>
/* --- EXTI registers ------------------------------------------------------ */
#define EXTI_RTSR1 MMIO32(EXTI_BASE + 0x00)
#define EXTI_RTSR EXTI_RTSR1
#define EXTI_FTSR1 MMIO32(EXTI_BASE + 0x04)
#define EXTI_FTSR EXTI_FTSR1
#define EXTI_SWIER1 MMIO32(EXTI_BASE + 0x08)
#define EXTI_RPR1 MMIO32(EXTI_BASE + 0x0c)
#define EXTI_FPR1 MMIO32(EXTI_BASE + 0x10)
#define EXTI_EXTICR(i) MMIO32(EXTI_BASE + 0x60 + (i)*4)
#define EXTI_EXTICR1 MMIO32(EXTI_BASE + 0x60)
#define EXTI_EXTICR2 MMIO32(EXTI_BASE + 0x64)
#define EXTI_EXTICR3 MMIO32(EXTI_BASE + 0x68)
#define EXTI_EXTICR4 MMIO32(EXTI_BASE + 0x6c)
#define EXTI_IMR1 MMIO32(EXTI_BASE + 0x80)
#define EXTI_IMR EXTI_IMR1
#define EXTI_EMR1 MMIO32(EXTI_BASE + 0x84)
#define EXTI_EMR EXTI_EMR1
#define EXTI_IMR2 MMIO32(EXTI_BASE + 0x90)
#define EXTI_EMR2 MMIO32(EXTI_BASE + 0x94)
/* --- EXTI_EXTICR Values -------------------------------------------------*/
#define EXTI_EXTICR_FIELDSIZE 8
#define EXTI_EXTICR_GPIOA 0
#define EXTI_EXTICR_GPIOB 1
#define EXTI_EXTICR_GPIOC 2
#define EXTI_EXTICR_GPIOD 3
#define EXTI_EXTICR_GPIOF 5
BEGIN_DECLS
uint32_t exti_get_rising_flag_status(uint32_t exti);
uint32_t exti_get_falling_flag_status(uint32_t exti);
void exti_reset_rising_request(uint32_t extis);
void exti_reset_falling_request(uint32_t extis);
END_DECLS
/**@}*/
#else
#warning "exti_common_v1.h should not be included directly, only via exti.h"
#endif
/** @endcond */

1
lib/stm32/g0/Makefile
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@@ -36,6 +36,7 @@ TGT_CFLAGS += $(STANDARD_FLAGS)
ARFLAGS = rcs ARFLAGS = rcs
OBJS += exti.o exti_common_all.o
OBJS += flash.o flash_common_all.o OBJS += flash.o flash_common_all.o
OBJS += gpio_common_all.o gpio_common_f0234.o OBJS += gpio_common_all.o gpio_common_f0234.o
OBJS += pwr.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;
}
/**@}*/