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/**
**************************************************************************
* @file at32f413_exint.c
* @version v2.0.5
* @date 2022-05-20
* @brief contains all the functions for the exint firmware library
**************************************************************************
* Copyright notice & Disclaimer
*
* The software Board Support Package (BSP) that is made available to
* download from Artery official website is the copyrighted work of Artery.
* Artery authorizes customers to use, copy, and distribute the BSP
* software and its related documentation for the purpose of design and
* development in conjunction with Artery microcontrollers. Use of the
* software is governed by this copyright notice and the following disclaimer.
*
* THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
* GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
* TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
* STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
* INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
*
**************************************************************************
*/
#include "at32f413_conf.h"
/** @addtogroup AT32F413_periph_driver
* @{
*/
/** @defgroup EXINT
* @brief EXINT driver modules
* @{
*/
#ifdef EXINT_MODULE_ENABLED
/** @defgroup EXINT_private_functions
* @{
*/
/**
* @brief exint reset
* @param none
* @retval none
*/
void exint_reset(void)
{
EXINT->inten = 0x00000000;
EXINT->polcfg1 = 0x00000000;
EXINT->polcfg2 = 0x00000000;
EXINT->evten = 0x00000000;
EXINT->intsts = 0x0007FFFF;
}
/**
* @brief exint default para init
* @param exint_struct
* - to the structure of exint_init_type
* @retval none
*/
void exint_default_para_init(exint_init_type *exint_struct)
{
exint_struct->line_enable = FALSE;
exint_struct->line_select = EXINT_LINE_NONE;
exint_struct->line_polarity = EXINT_TRIGGER_FALLING_EDGE;
exint_struct->line_mode = EXINT_LINE_EVENT;
}
/**
* @brief exint init
* @param exint_struct
* - to the structure of exint_init_type
* @retval none
*/
void exint_init(exint_init_type *exint_struct)
{
uint32_t line_index = 0;
line_index = exint_struct->line_select;
EXINT->inten &= ~line_index;
EXINT->evten &= ~line_index;
if(exint_struct->line_enable != FALSE)
{
if(exint_struct->line_mode == EXINT_LINE_INTERRUPUT)
{
EXINT->inten |= line_index;
}
else
{
EXINT->evten |= line_index;
}
EXINT->polcfg1 &= ~line_index;
EXINT->polcfg2 &= ~line_index;
if(exint_struct->line_polarity == EXINT_TRIGGER_RISING_EDGE)
{
EXINT->polcfg1 |= line_index;
}
else if(exint_struct->line_polarity == EXINT_TRIGGER_FALLING_EDGE)
{
EXINT->polcfg2 |= line_index;
}
else
{
EXINT->polcfg1 |= line_index;
EXINT->polcfg2 |= line_index;
}
}
}
/**
* @brief clear exint flag
* @param exint_line
* this parameter can be any combination of the following values:
* - EXINT_LINE_0
* - EXINT_LINE_1
* ...
* - EXINT_LINE_17
* - EXINT_LINE_18
* @retval none
*/
void exint_flag_clear(uint32_t exint_line)
{
EXINT->intsts = exint_line;
}
/**
* @brief get exint flag
* @param exint_line
* this parameter can be one of the following values:
* - EXINT_LINE_0
* - EXINT_LINE_1
* ...
* - EXINT_LINE_17
* - EXINT_LINE_18
* @retval the new state of exint flag(SET or RESET).
*/
flag_status exint_flag_get(uint32_t exint_line)
{
flag_status status = RESET;
uint32_t exint_flag =0;
exint_flag = EXINT->intsts & exint_line;
if((exint_flag != (uint16_t)RESET))
{
status = SET;
}
else
{
status = RESET;
}
return status;
}
/**
* @brief generate exint software interrupt event
* @param exint_line
* this parameter can be one of the following values:
* - EXINT_LINE_0
* - EXINT_LINE_1
* ...
* - EXINT_LINE_17
* - EXINT_LINE_18
* @retval none
*/
void exint_software_interrupt_event_generate(uint32_t exint_line)
{
EXINT->swtrg |= exint_line;
}
/**
* @brief enable or disable exint interrupt
* @param exint_line
* this parameter can be any combination of the following values:
* - EXINT_LINE_0
* - EXINT_LINE_1
* ...
* - EXINT_LINE_17
* - EXINT_LINE_18
* @param new_state: new state of exint interrupt.
* this parameter can be: TRUE or FALSE.
* @retval none
*/
void exint_interrupt_enable(uint32_t exint_line, confirm_state new_state)
{
if(new_state == TRUE)
{
EXINT->inten |= exint_line;
}
else
{
EXINT->inten &= ~exint_line;
}
}
/**
* @brief enable or disable exint event
* @param exint_line
* this parameter can be any combination of the following values:
* - EXINT_LINE_0
* - EXINT_LINE_1
* ...
* - EXINT_LINE_17
* - EXINT_LINE_18
* @param new_state: new state of exint event.
* this parameter can be: TRUE or FALSE.
* @retval none
*/
void exint_event_enable(uint32_t exint_line, confirm_state new_state)
{
if(new_state == TRUE)
{
EXINT->evten |= exint_line;
}
else
{
EXINT->evten &= ~exint_line;
}
}
/**
* @}
*/
#endif
/**
* @}
*/
/**
* @}
*/
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