Flashing Lights Mbed

Mbed OS Best practice
1

Hi, I’m using a K64F board I have have an input (PTB9) and want it to flash two LED (PTA1 and PTA2) outputs I have connected to it every 0.5 seconds.

So when button is pressed LED flash and when button is pressed again, they turn off. Any help?
Thank you

2

Hello,

just start with example of InterruptIn - API references and tutorials | Mbed OS 6 Documentation

BR, Jan

3

Thank you, I’ve already looked at this. I’ve been looking at tickers in particular, and still can’t get get anything working.

4

Can you be more specific? I probably do not understand what do you want.
You descripted simple example of a user button and a led, and you talking about a ticker now.

Ideally show your code and mark what is not working.

BR, Jan

5

My bad sorry, I don’t know how to write a code for what I need to do, I’ve looked at interrupts, but still don’t know how to write it.

But the Description is quite simple, push a button once, it makes LEDs flash, and push it again it turns it off.

6

Down on page (what I provided via the link above) is an example of that what you exactly want.
So code based on the example can looks like below

#include "mbed.h"

InterruptIn button(PTB9);
DigitalOut led1(PTA1);
DigitalOut led2(PTA2);

void flip()
{
    led1 = !led1;
    led2 = !led2;
}

int main()
{
    button.rise(&flip);  // attach the address of the flip function to the rising edge
    while (1) {          // wait around, interrupts will interrupt this!
        ThisThread::sleep_for(1s);
        printf("loop\n");
    }
}

BR, Jan