From the mbed microcontroller Handbook.

Timeout

The Timeout interface is used to setup an interrupt to call a function after a specified delay.

Any number of Timeout objects can be created, allowing multiple outstanding interrupts at the same time.

Hello World!

A simple program to setup a Timeout to invert an LED after a given timeout...

Code

#include "mbed.h"

Timeout flipper;
DigitalOut led1(LED1);
DigitalOut led2(LED2);

void flip() {
    led2 = !led2;
}

int main() {
    led2 = 1;
    flipper.attach(&flip, 2.0); // setup flipper to call flip after 2 seconds

    // spin in a main loop. flipper will interrupt it to call flip
    while(1) {
        led1 = !led1;
        wait(0.2);
    }
}

API

API summary

Timeout	A Timeout is used to call a function at a point in the future
Functions
attach	Attach a function to be called by the Timeout, specifiying the delay in seconds
attach	Attach a member function to be called by the Timeout, specifiying the delay in seconds
attach_us	Attach a function to be called by the Timeout, specifiying the delay in micro-seconds
attach_us	Attach a member function to be called by the Timeout, specifiying the delay in micro-seconds
detach	Detach the function

class Timeout : public Ticker

A Timeout is used to call a function at a point in the future

void attach( void (*fptr)(void),
float t )

Attach a function to be called by the Timeout, specifiying the delay in seconds

void attach_us( void (*fptr)(void),
unsigned int t )

Attach a function to be called by the Timeout, specifiying the delay in micro-seconds

void detach()

Detach the function

Page history

Last modified 21 Jul 2010, by Dan Ros

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