/*****************************************************************************
 * Copyright (c) 2022, Nsing Technologies Pte. Ltd.
 *
 * 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.
 *
 * Nsing' 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 Nsing "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 Nsing 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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 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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/**
 * @file bsp_key.c
 * @author Nsing
 * @version V1.2.2
 *
 * @copyright Copyright (c) 2022, Nsing Technologies Pte. Ltd. All rights reserved.
 */

#include "bsp_key.h"

/**
 * @brief  NVIC configuration.
 */
static void NVIC_Configuration(void)
{
    NVIC_InitType NVIC_InitStructure;

    /* Configure the NVIC Preemption Priority Bits */
    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

    /* Enable the KEY1 Interrupt */
    NVIC_InitStructure.NVIC_IRQChannel                   = KEY1_INT_EXTI_IRQ;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority        = 1;
    NVIC_InitStructure.NVIC_IRQChannelCmd                = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}

/**
 * @brief  Configure the IO as EXTI_Line and set the Priority.
 */
void EXTI_Key_Config(void)
{
    GPIO_InitType GPIO_InitStructure;
    EXTI_InitType EXTI_InitStructure;

    /* Enable GPIO clock */
    RCC_EnableAPB2PeriphClk(KEY1_INT_GPIO_CLK, ENABLE);

    /* Configure NVIC */
    NVIC_Configuration();

    /*--------------------------KEY1_PA4 Configuration-----------------------------*/
    /* Initialize GPIO_InitStructure */
    GPIO_InitStruct(&GPIO_InitStructure);
    /* Configure KEY1 as input floating */
    GPIO_InitStructure.Pin       = KEY1_INT_GPIO_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Input;
    GPIO_InitStructure.GPIO_Pull = GPIO_Pull_Up;
    GPIO_InitPeripheral(KEY1_INT_GPIO_PORT, &GPIO_InitStructure);

    GPIO_ConfigEXTILine(KEY1_INT_EXTI_PORTSOURCE, KEY1_INT_EXTI_PINSOURCE);
    EXTI_InitStruct(&EXTI_InitStructure);
    EXTI_InitStructure.EXTI_Line    = KEY1_INT_EXTI_LINE;
    EXTI_InitStructure.EXTI_Mode    = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_InitPeripheral(&EXTI_InitStructure);
}
