IDD Fall 2015 / Mbed 2 deprecated idd_cpp_extern

Example of an "extern" declaration to reuse a global variable defined in one file in another file.

Dependencies:   mbed

myWait.cpp

Committer:
bjo3rn
Date:
2015-09-23
Revision:
0:bc708d703171

File content as of revision 0:bc708d703171:

#include "mbed.h"
#include "myWait.h"

// extern declares that the global variable greenLed is defined in a different source file
extern DigitalOut greenLed;

// definition of our custom wait function
void myWait(float t) {
    greenLed=0; //turn on
    wait(t); //wait
    greenLed=1; //turn off
}