/*Youtube Channel: AJAYNIRMAL RANGANATHAN
 * Button control in TM4C123 launchpad 
 */

#include<stdint.h>
#include "tm4c123gh6pm.h"
uint32_t value;
int main(void)
{
	SYSCTL_RCC_R |= 0x02400540;// Configure system clock
	SYSCTL_RCGCGPIO_R|=SYSCTL_RCGCGPIO_R5;//System PortF peripheral clock enable
	GPIO_PORTF_LOCK_R |=0x4C4F434B;//Unclock Code
	GPIO_PORTF_CR_R   |=0x00000001;//Commit Register
	GPIO_PORTF_DEN_R |=0x000000FF;// enable the pins of port as DIGITAL
	GPIO_PORTF_DIR_R |=0x00000004;//Configure the ports for LED & switch
	GPIO_PORTF_PUR_R |=0x00000001;//Configure Pull-up resistor on PF0
	while(1)
	{
	  value=GPIO_PORTF_DATA_R & 0x00000001;//read the status of switch
  	  if(value==0x0000000)
  	  {
	  	  GPIO_PORTF_DATA_R=0x00000004;//on board LED on
   	   }
  	  else
    	{
	  	  GPIO_PORTF_DATA_R=0x00000000;//on board LED off
    	}
	}

}