mbed_example / Mbed OS Ticker_HelloWorld

Hello World for Ticker

Fork of Ticker_HelloWorld by Mbed

Use

Ticker is an interrupt driven time interrupt. A ticker works like a kitchen timer, you set it up to tick down from some value in seconds, when it reaches 0 it calls a callback function, then resets the ticker and starts the whole process over again. A ticker can be used to cause periodic events, like blinking an LED on and Off at a certain rate. A tickers maximum time it can handle is 30min, for anything greater consider using the real time clock functionality. In this example LED1 is controlled by the main while look, while LED2 is controlled by the Ticker callback function.

API

API reference.

Import librarymbed

No documentation found.

main.cpp@0:5014bf742e9b, 2013-02-14 (annotated)

Committer:
mbed_official
Date:
Thu Feb 14 14:30:22 2013 +0000
Revision:
0:5014bf742e9b
Child:
2:87f26931d8d1
Ticket Hello World

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:5014bf742e9b 1 #include "mbed.h"
mbed_official 0:5014bf742e9b 2
mbed_official 0:5014bf742e9b 3 Ticker flipper;
mbed_official 0:5014bf742e9b 4 DigitalOut led1(LED1);
mbed_official 0:5014bf742e9b 5 DigitalOut led2(LED2);
mbed_official 0:5014bf742e9b 6
mbed_official 0:5014bf742e9b 7 void flip() {
mbed_official 0:5014bf742e9b 8 led2 = !led2;
mbed_official 0:5014bf742e9b 9 }
mbed_official 0:5014bf742e9b 10
mbed_official 0:5014bf742e9b 11 int main() {
mbed_official 0:5014bf742e9b 12 led2 = 1;
mbed_official 0:5014bf742e9b 13 flipper.attach(&flip, 2.0); // the address of the function to be attached (flip) and the interval (2 seconds)
mbed_official 0:5014bf742e9b 14
mbed_official 0:5014bf742e9b 15 // spin in a main loop. flipper will interrupt it to call flip
mbed_official 0:5014bf742e9b 16 while(1) {
mbed_official 0:5014bf742e9b 17 led1 = !led1;
mbed_official 0:5014bf742e9b 18 wait(0.2);
mbed_official 0:5014bf742e9b 19 }
mbed_official 0:5014bf742e9b 20 }