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/*-----------------------------------------------------------------------------
 * Name: main.c
 * Purpose: Toggling_LEDs application
 * Author: Student
 *----------------------------------------------------------------------------*/
 #include "MKL25Z4.h" /*Device header*/
 #define LED_1 0
 #define SW_1 0

 #define LED_2 1
 #define SW_2 1

 #define LED_3 2
 #define SW_3 2

 #define LED_4 3
 #define SW_4 3

  void dMs ( int n) {
		int i;
		int j;
		for( i = 0 ; i < n; i++)
		for(j = 0; j < 7000; j++) {}
}

 int main() {
//Enable clock for Port B and Port D
SIM->SCGC5|=SIM_SCGC5_PORTB(1)|SIM_SCGC5_PORTD(1);

//Configure Port B pin 0 as GPIO, Output
PORTB->PCR[LED_1]|=PORT_PCR_MUX(1);
PTB->PDDR|=(1<<LED_1);

	 PORTB->PCR[LED_2]|=PORT_PCR_MUX(1);
PTB->PDDR|=(1<<LED_2);


	 PORTB->PCR[LED_3]|=PORT_PCR_MUX(1);
PTB->PDDR|=(1<<LED_3);

	 PORTB->PCR[LED_4]|=PORT_PCR_MUX(1);
PTB->PDDR|=(1<<LED_4);


//Configure Port D pin 0 as GPIO, Input, Pull-up resistor
PORTD->PCR[SW_1]|=PORT_PCR_MUX(1) | PORT_PCR_PE(1) | PORT_PCR_PS(0);
PTD->PDDR&=~(1<<SW_1);

	 PORTD->PCR[SW_2]|=PORT_PCR_MUX(1) | PORT_PCR_PE(1) | PORT_PCR_PS(0);
PTD->PDDR&=~(1<<SW_2);


	 PORTD->PCR[SW_3]|=PORT_PCR_MUX(1) | PORT_PCR_PE(1) | PORT_PCR_PS(0);
PTD->PDDR&=~(1<<SW_3);


	 PORTD->PCR[SW_4]|=PORT_PCR_MUX(1) | PORT_PCR_PE(1) | PORT_PCR_PS(0);
PTD->PDDR&=~(1<<SW_4);



while(1){


if( (PTD->PDIR & (1<<SW_1))==0){
		dMs(15);
if(PTB->PDOR & (1<<LED_1))
PTB->PDOR&=~(1<<LED_1);
else
PTB->PDOR|=(1<<LED_1);


while((PTD->PDIR & (1<<SW_1))==0); //Wait for SW_1 release
}

if( (PTD->PDIR & (1<<SW_2))==0){
	dMs(15);
if(PTB->PDOR & (1<<LED_2))
PTB->PDOR&=~(1<<LED_2);
else
PTB->PDOR|=(1<<LED_2);

while((PTD->PDIR & (1<<SW_2))==0); //Wait for SW_2 release
}

if( (PTD->PDIR & (1<<SW_3))==0){
	dMs(15);
if(PTB->PDOR & (1<<LED_3))
PTB->PDOR&=~(1<<LED_3);
else
PTB->PDOR|=(1<<LED_3);

while((PTD->PDIR & (1<<SW_3))==0); //Wait for SW_3 release
}

if( (PTD->PDIR & (1<<SW_4))==0){
	dMs(15);
if(PTB->PDOR & (1<<LED_4))
PTB->PDOR&=~(1<<LED_4);
else
PTB->PDOR|=(1<<LED_4);

while((PTD->PDIR & (1<<SW_4))==0); //Wait for SW_4 release
}

}
}