/**
*     Copyright (c) 2025, Nsing Technologies Inc.
* 
*     All rights reserved.
*
*     This software is the exclusive property of Nsing Technologies Inc. (Hereinafter 
* referred to as Nsing). This software, and the product of Nsing described herein 
* (Hereinafter referred to as the Product) are owned by Nsing under the laws and treaties
* of the People's Republic of China and other applicable jurisdictions worldwide.
*
*     Nsing does not grant any license under its patents, copyrights, trademarks, or other 
* intellectual property rights. Names and brands of third party may be mentioned or referred 
* thereto (if any) for identification purposes only.
*
*     Nsing reserves the right to make changes, corrections, enhancements, modifications, and 
* improvements to this software at any time without notice. Please contact Nsing and obtain 
* the latest version of this software before placing orders.

*     Although Nsing has attempted to provide accurate and reliable information, Nsing assumes 
* no responsibility for the accuracy and reliability of this software.
* 
*     It is the responsibility of the user of this software to properly design, program, and test 
* the functionality and safety of any application made of this information and any resulting product. 
* In no event shall Nsing be liable for any direct, indirect, incidental, special,exemplary, or 
* consequential damages arising in any way out of the use of this software or the Product.
*
*     Nsing Products are neither intended nor warranted for usage in systems or equipment, any
* malfunction or failure of which may cause loss of human life, bodily injury or severe property 
* damage. Such applications are deemed, "Insecure Usage".
*
*     All Insecure Usage shall be made at user's risk. User shall indemnify Nsing and hold Nsing 
* harmless from and against all claims, costs, damages, and other liabilities, arising from or related 
* to any customer's Insecure Usage.

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* limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement
* are disclaimed to the fullest extent permitted by law.

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* or otherwise distribute this software for any purposes, in whole or in part.
*
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* whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. 
* User shall comply with any applicable export control laws and regulations promulgated and administered by 
* the governments of any countries asserting jurisdiction over the parties or transactions.
**/

/**
*\*\file main.c
*\*\author Nsing
*\*\version v1.0.0
*\*\copyright Copyright (c) 2025, Nsing Technologies Inc. All rights reserved.
**/
#include "n32h49x.h"
#include <stdio.h>
#include <stdint.h>
#include "main.h"
#include "log.h"
#include "n32h49x_rcc.h"
#include "n32h49x_rtc.h"
#include "n32h49x_pwr.h"
#include "n32h49x_gpio.h"
#include "n32h49x_exti.h"
#include "misc.h"
#include "User_RTC_Config.h"

#define USER_WRITE_BKP_DAT1_DATA        0xA5A5

/**
*\*\name    TamperInputIoInit.
*\*\fun     Initialize Tamper input IO.
*\*\param   none
*\*\return  none
**/
void TamperInputIoInit(void)
{
    GPIO_InitType GPIO_InitStructure;
    GPIO_InitStruct(&GPIO_InitStructure);
    /* Enable the GPIO Clock */
    RCC_EnableAHB1PeriphClk(RCC_AHB_PERIPHEN_GPIOC, ENABLE);
    /* Configure the GPIO pin */
    GPIO_InitStructure.Pin        = GPIO_PIN_13;
    GPIO_InitStructure.GPIO_Mode  = GPIO_MODE_INPUT;
    GPIO_InitPeripheral(GPIOC, &GPIO_InitStructure);
}

/**
*\*\name    TamperInputIoInit.
*\*\fun     Initialize Tamper NVIC and EXIT LINE.
*\*\param   none
*\*\return  none
**/
void TAMPER_INT_Configuration(FunctionalState cmd)
{
    EXTI_InitType EXTI_InitStructure;
    NVIC_InitType NVIC_InitStructure;
    EXTI_ClrITPendBit(EXTI_LINE19);
    EXTI_InitStructure.EXTI_Line                          = EXTI_LINE19;
    EXTI_InitStructure.EXTI_Mode                          = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger                       = EXTI_Trigger_Rising; 
    EXTI_InitStructure.EXTI_LineCmd                       = ENABLE;
    EXTI_InitPeripheral(&EXTI_InitStructure);

    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
    /* Enable the RTC Alarm Interrupt */
    NVIC_InitStructure.NVIC_IRQChannel                    = RTC_TAMPER_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority  = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority         = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd                 = cmd;
    NVIC_Init(&NVIC_InitStructure);
}

/**
*\*\name    main.
*\*\fun     Main program.
*\*\
**/
int main(void)
{
    /*!< At this stage the microcontroller clock setting is already configured,
         this is done through SystemInit() function which is called from startup
         file (startup_n32h49x.s) before to branch to application main.
         To reconfigure the default setting of SystemInit() function, refer to
         system_n32h49x.c file
       */
    /* Initialize USART */
    log_init();
    log_info("\r\n RTC Init \r\n");
    /* Enable the PWR clock */
    RCC_EnableAPB1PeriphClk(RCC_APB1_PERIPHEN_PWR | RCC_APB1_PERIPHEN_BKP, ENABLE);
    /* Allow access to RTC */
    PWR_BackupAccessEnable(ENABLE);
    /* RTC clock source select */
    if(SUCCESS==RTC_CLKSourceConfig(RTC_CLK_SRC_TYPE_LSE, true, false))
    {
        if (USER_WRITE_BKP_DAT1_DATA != RTC_BKUPRgRead(1))
        {
           RTC_PrescalerConfig();
           RTC_BKUPRgWrite(1, USER_WRITE_BKP_DAT1_DATA);
           log_info("\r\n RTC Init Success\r\n");
        }
    }
    else
    {
        log_info("\r\n RTC Init Failed\r\n");
    }
    /*Tamper GPIO Initialize,PC13*/
    TamperInputIoInit();
	
    /*Configure Tamper GPIO trigger mode*/
    RTC_TamperTriggerConfig(RTC_TAMPER_1, RTC_TamperTrigger_HighLevel);
    /*Configure the valib number of scanning times*/
    RTC_TamperFilterConfig(RTC_TamperFilter_2Sample);
    /*Configure scanning frequence*/
    RTC_TamperSamplingFreqConfig(RTC_TamperSamplingFreq_RTCCLK_Div256);
    /*Configure precharge duration time*/
    RTC_TamperPinsPrechargeDuration(RTC_TamperPrechargeDuration_1RTCCLK);
	
    EXTI_ClrITPendBit(EXTI_LINE19);
    /*Configure tamper interruput,EXTI_LINE19*/
    TAMPER_INT_Configuration(ENABLE);
    RTC_ClrIntPendingBit(RTC_INT_TAMP1);
    /*Enable tamper interruput*/
    RTC_TamperIECmd(RTC_TAMPER1_INT, ENABLE);
    /*Enable tamper1 */
    RTC_TamperCmd(RTC_TAMPER_1, ENABLE);
    while (1)
    {
    }
}
