#include "device_driver.h"

static void Sys_Init(void)
{
	Clock_Init();
	LED_Init();
	Uart_Init(115200);
}

void Main(void)
{
   Sys_Init();
   Uart_Printf("PA3 Switch Input Toggling for LED on PA2\n");
   Macro_Write_Block(GPIOA->CRL, 0xF, 0x8, 12);
   Macro_Write_Block(GPIOA->CRL, 0xF, 0x6, 8); 
   Macro_Set_Bit(GPIOA->ODR, 3);

   int interlock = 0;

   for (;;)
   {
      if ((interlock == 0) && Macro_Check_Bit_Clear(GPIOA->IDR, 3))
      {
         Macro_Invert_Bit(GPIOA->ODR, 2);  
         interlock = 1;
      }
      else if ((interlock == 1) && Macro_Check_Bit_Set(GPIOA->IDR, 3))
      {
         interlock = 0;  
      }
   }
}