/*****************************************************************************
 * Copyright (c) 2019, Nations Technologies Inc.
 *
 * All rights reserved.
 * ****************************************************************************
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Nations' name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY NATIONS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL NATIONS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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/**
 * @file User_Key_Config.c
 * @author Nations 
 * @version v1.0.1
 *
 * @copyright Copyright (c) 2019, Nations Technologies Inc. All rights reserved.
 */


#include <stdio.h>
#include <stdint.h>
#include "n32g45x.h"
#include "n32g45x_gpio.h"
#include "User_Key_Config.h"



/**
 * @brief  Configures key GPIO.
 * @param key Specifies the Led to be configured.
 *   This parameter can be GPIO_PIN_0~GPIO_PIN_15.
 */
void KeyInputExtiInit(GPIO_Module* GPIOx, uint16_t Pin)
{
    GPIO_InitType GPIO_InitStructure;
    EXTI_InitType EXTI_InitStructure;
    NVIC_InitType NVIC_InitStructure;
    /* Check the parameters */
    assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
    GPIO_InitStruct(&GPIO_InitStructure);
    /* Enable the GPIO Clock */
    RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOA, ENABLE);
    /*Configure the GPIO pin as input floating*/
	GPIO_InitStruct(&GPIO_InitStructure);
    GPIO_InitStructure.Pin        = Pin;
    GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_IN_FLOATING;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitPeripheral(GPIOx, &GPIO_InitStructure);
    /*Configure key EXTI Line to key input  Pin*/
    GPIO_ConfigEXTILine(GPIOA_PORT_SOURCE, GPIO_PIN_SOURCE0);
    /*Configure key EXTI line*/
	EXTI_InitStruct(&EXTI_InitStructure);
    EXTI_InitStructure.EXTI_Line = EXTI_LINE0;
    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_InitPeripheral(&EXTI_InitStructure);
    /*Set key input interrupt priority*/
    NVIC_InitStructure.NVIC_IRQChannel                   = EXTI0_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x05;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority        = 0x0F;
    NVIC_InitStructure.NVIC_IRQChannelCmd                = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}

