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/*
*********************************************************************************************************
*                                              rx32s61xx
*                                           Library Function
*
*                                   Copyright 2024, RX Tech, Corp.
*                                        All Rights Reserved
*
*
* Project      : rx32s61xx
* File         : main.c
* By           : RX_SD_Team
* Version      : V1.0.0
* Description  : Only rx32s61xx
*********************************************************************************************************
*/
#include "main.h"

/*
*********************************************************************************************************
*                                           Global macro/Structure
*********************************************************************************************************
*/

/*
*********************************************************************************************************
*                                             Global variable
*********************************************************************************************************
*/

/*
*********************************************************************************************************
*                                           Global Function declaration
*********************************************************************************************************
*/
void Delay_us( uint32_t us )
{
  uint32_t Fsys;
	Fsys=RCC_Get_SystemClock()/1000000;
	if( us*Fsys > SysTick_LOAD_RELOAD_Msk ) return;
	SysTick->CTRL = 0;    //Disable SysTick
	SysTick->LOAD = Fsys*us;//Set count number:80*us, 80 means 1us when SystemCoreClock is 80MHz
	SysTick->VAL  = 0;    //Clear current count number and count flag
	SysTick->CTRL = 5;    //Enable SysTick and Select SystemCoreClock as SysTick clock source
	while((SysTick->CTRL&0x10000)==0);//Wait for count flag set
	SysTick->CTRL = 0;    //Disable SysTick
}

void Delay_ms( uint32_t ms )
{
	uint32_t i;
	for(i=ms;i>0;i--)
	{
		Delay_us(1000);
	}
}

void SystemClock_Config(void)
{
	// set flash lantency
	FLASH_Set_Latency(FLASH_Latency_3);
	
  RCC_Enable_HSI();
  while(RCC_Get_HSIRDY() != 1)
  {
  }
  RCC_Set_PLLMUL(RCC_CFGR_PLLMUL_19x);
  RCC_Enable_PLL();
  while(RCC_Get_PLLRDY() != 1)
  {
  }
  RCC_Set_AHBPrescaler(RCC_CFGR_HPRE_DIV1);
  RCC_Set_APB1Prescaler(RCC_CFGR_PPRE1_DIV2);
  RCC_Set_APB2Prescaler(RCC_CFGR_PPRE2_DIV1);
  RCC_Set_SysClkSource(RCC_CFGR_SW_PLL);
  while(RCC_Get_SysClkSource() != RCC_CFGR_SWS_PLL)
  {
  }
  RCC_Set_ADCClkSource(RCC_CFGR_ADCCLK_SEL_PLL2);
  RCC_Set_ADCPrescaler(RCC_CFGR_ADCPRE_DIV5);
}


void EXTI1_Init(void)
{
  RCC_Enable_AHBClock(RCC_AHBENR_IOPCEN);
  
  //wake-up source -> EXTI1:PC1
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  GPIO_InitStruct.Pin  = GPIO_PIN_1;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_PUPDR_Pullup;
  GPIO_InitStruct.Speed = GPIO_OSPEEDR_High;	
	GPIO_InitStruct.Alternate = GPIO_AF0;
  GPIO_Init(GPIOC, &GPIO_InitStruct);
  
  SYSCFG->EXTICR[0] = 0x20;
  
  EXTI_Enable_IT(EXTI_LINE_1);
  EXTI_Disable_Event(EXTI_LINE_1);
  EXTI_Enable_FallingTrig(EXTI_LINE_1);
  NVIC_EnableIRQ(EXTI0_3_IRQn);
}

void GPIO_Config(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  GPIO_InitStruct.Pin = GPIO_PIN_0;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_PUPDR_Floating;
	GPIO_InitStruct.Alternate = GPIO_AF0;
  GPIO_InitStruct.Speed = GPIO_OSPEEDR_High;
  GPIO_Init(GPIOC,&GPIO_InitStruct);
}

int main(void)
{
  SystemClock_Config();
  Delay_ms(2000);
  RCC_Enable_APB1Clock(RCC_APB1ENR_PWREN);
  RCC_Enable_APB2Clock(RCC_APB2ENR_SYSCFGEN);
  
  EXTI1_Init();
  GPIO_Config();
  
  PWR_Enter_STOP_Mode();
	
  while (1)
  {
    GPIO_Toggle_Pin(GPIOC,GPIO_PIN_0);
  }

}
