Spyros Papanastasiou / Mbed OS blink_in_binary

send a number through serial USB >> blink it in binary using the default LED

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main.cpp

00001 #include "mbed.h"
00002 
00003 DigitalOut led1(LED1);
00004 
00005 Serial pc(USBTX, USBRX);
00006 
00007 // blink a number in binary //
00008 void blink_in_binary (int number);
00009 
00010 // main() runs in its own thread in the OS
00011 int main() {
00012 //    pc.baud(9600);
00013     int number;
00014     number = 0;
00015     while (true) {
00016         while (!pc.readable());
00017         pc.scanf("%d", &number);
00018         pc.printf("you entered %d\n", number);
00019         blink_in_binary(number);
00020     }
00021 }
00022 
00023 // recursivelly prints left-to-right //
00024 void blink_in_binary (int number)
00025 {
00026     if (number <= 0)
00027         return;
00028     blink_in_binary (number >> 1);
00029     led1 = number & 1;
00030     wait(0.3);
00031     led1 = 0;
00032     wait(0.3);
00033 }
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