I am trying to store the contents of Port Data Input Register into an array data[i].
code is as follows:
#include "MKL46Z4.h" // Device header
void InitLED(void)
{
SIM->SCGC5=SIM_SCGC5_PORTD_MASK;// Enable clock to PORTD
PORTD->PCR[5]=256;// Set pin 5 of PORTD as GPIO
PTD->PDDR=(1u<<5);// Set pin 5 of PORTD as OUTPUT
}
void InitSYSTICK(void)
{
SysTick->CTRL=0;//Disable the systick timer
SysTick->LOAD=0x00FFFFFF;//Reload it to its full value 24 bits
SysTick->VAL=0;//Write something in current register to reset it
SysTick->CTRL=0x00000005;//101//1=bus clock,0= Disable interrupt,1= enable systick timer
}
int main()
{
volatile unsigned long time[50];
volatile unsigned long data[50];
unsigned long i=0,now=0,last=0,j=0;
InitLED();
InitSYSTICK();
last=SysTick->VAL;
while(1)
{
PTD->PTOR=(1u<<5);//Toggle LED
if(i<50)
{
now=SysTick->VAL;
time[i]=(last-now);
data[i]=PTD->PDIR;
last=now;
i++;
}
for(j=0;j<=800000;j++)
{}
}
}
When I write data[i]=PTD->PDIR; and debug, it goes to HardFault_Handler. I don't know what is the problem with this statement.Please Help?
