/*****************************************************************************
 * 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,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ****************************************************************************/

/**
 * @file main.c
 * @author Nations
 * @version v1.0.2
 *
 * @copyright Copyright (c) 2019, Nations Technologies Inc. All rights reserved.
 */
#include "main.h"
#include "n32g4fr.h"
#include "User_LED_Config.h"

/** @addtogroup N32G4FR_StdPeriph_Examples
 * @{
 */

/** @addtogroup WWDG_Reset
 * @{
 */
 
__IO uint32_t TimingDelay = 0;

/**
 * @brief  Inserts a delay time.
 * @param nTime specifies the delay time length, in milliseconds.
 */
void Delay(__IO uint32_t nTime)
{
    TimingDelay = nTime;
    while (TimingDelay != 0)
    {
    }
}

/**
 * @brief  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_n32g4fr.s) before to branch to application main.
         To reconfigure the default setting of SystemInit() function, refer to
         system_n32g4fr.c file
       */
    LEDInit(LED1_PORT, LED1_PIN);
    LEDInit(LED3_PORT, LED3_PIN);
    LEDOff(LED1_PORT, LED1_PIN);
    LEDOff(LED3_PORT, LED3_PIN);
    /* Check if the system has resumed from WWDG reset */
    if (RCC_GetFlagStatus(RCC_FLAG_WWDGRST) != RESET)
    {
       /* WWDGRST flag set */
       /* Turn on LED1 */
       LEDOn(LED1_PORT,LED1_PIN);
       /* Clear reset flags */
       RCC_ClrFlag();
    }
    else
    {
       /* WWDGRST flag is not set */
       /* Turn off LED1 */
       LEDOff(LED1_PORT,LED1_PIN);
    }
    /* Setup SysTick Timer for 1 msec interrupts  */
    if (SysTick_Config(SystemCoreClock / 1000))
    {
       /* error */
       while (1);
    }
    Delay(100);
    /* WWDG configuration */
    /* Enable WWDG clock */
    RCC_EnableAPB1PeriphClk(RCC_APB1_PERIPH_WWDG, ENABLE);
    /* WWDG clock counter = (PCLK1(36MHz)/4096)/8 = 1099 Hz (~910 us)  */
    WWDG_SetPrescalerDiv(WWDG_PRESCALER_DIV8);
    /* Set Window value to 80; WWDG counter should be refreshed only when the counter
      is below 80 (and greater than 64) otherwise a reset will be generated */
    WWDG_SetWValue(80);
    /* Enable WWDG and set counter value to 127, WWDG timeout = ~910 us * 64 = 58.25 ms
      In this case the refresh window is: ~910 us * (127-80) = 42.77 ms < refresh window < ~910 us * 64 = 58.25ms */
    WWDG_Enable(127);
    while (1)
    {
       /* Toggle LED3 */
       LEDBlink(LED3_PORT, LED3_PIN);
       Delay(50);
       /* Update WWDG counter */
       WWDG_SetCnt(127);
    }
}



#ifdef USE_FULL_ASSERT

/**
 * @brief  Reports the name of the source file and the source line number
 *         where the assert_param error has occurred.
 * @param file pointer to the source file name
 * @param line assert_param error line source number
 */
void assert_failed(const uint8_t* expr, const uint8_t* file, uint32_t line)
{
    /* User can add his own implementation to report the file name and line number,
       ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

    /* Infinite loop */
    while (1)
    {
    }
}

#endif

/**
 * @}
 */

/**
 * @}
 */
