/*
 * Copyright 2016-2021 NXP
 * All rights reserved.
 *
 * This is a very simple example.
 * It is a loop cheecking the button, if pushed it turns the
 * red LED ON if not pushed it turns it off
 * button is connected to pin 8, LED to pin 9
 * I used define to define 8 and 9
 *
 * @file    ex1.c
 * @brief   Application entry point.
 */
#include <stdio.h>
#include "board.h"
#include "peripherals.h"
#include "pin_mux.h"
#include "clock_config.h"
#include "LPC802.h"
#include "fsl_debug_console.h"
/* TODO: insert other include files here. */
#define LED (9)
#define BUTTON (8)
/* TODO: insert other definitions and declarations here. */

/*
 * @brief   Application entry point.
 */
int main(void) {

  	/* Init board hardware. */
    BOARD_InitBootPins();
    BOARD_InitBootClocks();
    BOARD_InitBootPeripherals();
  	/* Init FSL debug console. */
    BOARD_InitDebugConsole();
    //Connect the clock to the ports,, a must if you want to use any port
    SYSCON->SYSAHBCLKCTRL0 |= SYSCON_SYSAHBCLKCTRL0_GPIO0_MASK;

    PRINTF("Hello World\n");

    /* Force the counter to be placed into memory. */
    volatile static int i = 0 ;
    /* Enter an infinite loop, just incrementing a counter. */

        //make pio 8 as input (set direction register to 0 or clear it
        GPIO->DIRCLR[0] = (1UL <<BUTTON);

        //make pin 9 output (set direction register to 1)
        GPIO->DIRSET[0] = (1UL <<LED);          //make pin 9 output
            //Before the LED OFF (clear it)
            GPIO->CLR[0]=(1UL << LED);
        while(1) {  // do forever
        	//continuously check the input if 1 turn the LED ON
        	//read the value of pin 8, specifically the least significant bit
/*******************************/
        	i= GPIO->B[0][BUTTON] & 1; //
        	if ( i == 1)  {       // Is it high. Not pushed Then Turn LED OFF
        	  GPIO->SET[0] = (1UL << LED);           // Turn RED LED OFF

        	} else {// it is 0, pushed

        	 GPIO->CLR[0]=(1UL<<LED);    // turn LED ON RED

        	 }
        	/******************************/


        }

    return 0 ;
}