Fall $2023$

Assignment

Write a program using the GPIO method that performs the same tasks as the interrupt code snippet given in Listing $1.$ Observe that Listing $1$ simply defines that the CPU waits in an infinite loop formed by the code line while$($true$).$ When the user presses the button, this loop is interrupted. The CPU exccutes the function getButtons$\_$callback. Afterward, it turns back and waits in the infinite loop for another internupt. You should use Mbed Studio.

Listing $1$: Interrupt Code

Hundef$\_$ARM$\_$FP

#include "mbed. $h"$

DigitalOut greenLED$($LEO$1)$;

Interruptin userButton$($BUTION$1)$;

void gethuttons$()$

$1$

greenLED $=$ IgreenLED:

$1$

int main$[]$

I

greenLEO $=0$;

userButton fall$($&getButtons$).$

I$/\_$enable$\_$irqll:

while $($true$)$:

$2.$ Submission

Submit a single POF file that inciudes your codes.