Diff: main.cpp

Revision:

51:38bcf5ee4cb1

Parent:

29:0b58d21e87d6

Child:

52:fb9d943f4042

--- a/main.cpp	Wed Nov 08 14:30:02 2017 +0000
+++ b/main.cpp	Sat Nov 11 15:03:45 2017 +0000
@@ -2,11 +2,32 @@
 
 DigitalOut led1(LED1);
 
+Serial pc(USBTX, USBRX);
+
+// blink a number in binary //
+void blink_in_binary (int number);
+
 // main() runs in its own thread in the OS
 int main() {
+//    pc.baud(9600);
+    int number;
+    number = 0;
     while (true) {
-        led1 = !led1;
-        wait(0.5);
+        while (!pc.readable());
+        pc.scanf("%d", &number);
+//        pc.printf("you entered %d\n", number);
+        blink_in_binary(number);
     }
 }
 
+// recursivelly prints left-to-right //
+void blink_in_binary (int number)
+{
+    if (number <= 0)
+        return;
+    blink_in_binary (number >> 1);
+    led1 = number & 1;
+    wait(0.3);
+    led1 = 0;
+    wait(0.3);
+}
\ No newline at end of file