mbed-os-examples / Mbed OS mbed-os-example-mbed5-blinky Featured

This is a very simple guide, reviewing the steps required to get Blinky working on an Mbed OS platform.

Mbed OS Blinky

This example shows the use of a DigitalOut object to represent an LED and use of the nonblocking Thread::wait() call. Using nonblocking calls is good practice because Mbed OS can schedule and run other threads while the first thread is waiting.

Building this example

Building with Arm Mbed CLI

To use Mbed CLI to build this example, follow the instructions in the documentation. The instructions here relate to using the Arm Online Compiler.

To use the Online Compiler, import this code into the Online Compiler, and select your platform from the top right. Compile the code using the compile button, load it onto your board and press the reset button on the board. The code will run on the board, and you will see the LED blink.

You can find more instructions for using the Mbed Online Compiler in the documentation.

main.cpp@8:bb09890333fe, 2016-08-06 (annotated)

Committer:
mbed_official
Date:
Sat Aug 06 20:30:05 2016 +0100
Revision:
8:bb09890333fe
Parent:
1:846c97078558
Child:
22:af9dcf379926
Update main.cpp



Remove rtos.h. This is included by way of mbed.h



Commit copied from https://github.com/ARMmbed/mbed-os-example-blinky

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Jonathan Austin 0:2757d7abb7d9 1 #include "mbed.h"
Jonathan Austin 0:2757d7abb7d9 2
Jonathan Austin 0:2757d7abb7d9 3 DigitalOut led1(LED1);
Jonathan Austin 0:2757d7abb7d9 4
Jonathan Austin 1:846c97078558 5 // main() runs in its own thread in the OS
Jonathan Austin 1:846c97078558 6 // (note the calls to Thread::wait below for delays)
Jonathan Austin 0:2757d7abb7d9 7 int main() {
Jonathan Austin 0:2757d7abb7d9 8 while (true) {
Jonathan Austin 0:2757d7abb7d9 9 led1 = !led1;
Jonathan Austin 0:2757d7abb7d9 10 Thread::wait(500);
Jonathan Austin 0:2757d7abb7d9 11 }
Jonathan Austin 0:2757d7abb7d9 12 }
Jonathan Austin 1:846c97078558 13