Why does this simple for loop cause run time faults?

[AHnat.1]

I have made a for loop that produces the data of a sine wave and stores the values in an array. The loop is set to execute in the main(). However this seems to break whatever board i use, i have tested on L47RG and the H745i. Any help would be appreciated.

Below is the for loop that is executed in the main.c, main().

N is a defined constant of 100, and TMAX is a defined constant of 1.0

double t[N];

 double y[N];

/*data to be fitted*/

for (int i = 0; i < N; i++)

{

double ti = i * TMAX / 100;

double yi = sin(5 * ti + 0.6);

t[i] = ti;

y[i] = yi;

}

[gbm]

If t and y are declared inside main() or any other functin, they are created on the stack, occupying 1600 bytes. That's possibly dangerous - don't use stack fro big data structures. Double type is not handled by hardware on L476 - that may be another problem.

[Pavel A.]

Which runtime fault? CubeIDE and other decent IDEs have a fault analyzer to help you understand what happened.

1600 bytes on stack by itself is not dangerous. It should be something else.

[Tesla DeLorean]

Do some proper debugging...

Understand the mechanics of the failure.

Have a proper Hard Fault Handler so you can understand if and why it ends up there.

Use the debugger, look at the registers, inspect the stack, see where it's hung up.

[S.Ma]

Replace double with float as debug trial.