1  #include "WProgram.h"
 2  
 3  extern "C" int main(void)
 4  {
 5  #if !defined(ARDUINO)
 6  
 7  	// To use Teensy 3.0 without Arduino, simply put your code here.
 8  	// For example:
 9  
10  	pinMode(13, OUTPUT);
11  	while (1) {
12  		digitalWriteFast(13, HIGH);
13  		delay(500);
14  		digitalWriteFast(13, LOW);
15  		delay(500);
16  	}
17  
18  
19  #else
20  	// Arduino's main() function just calls setup() and loop()....
21  	setup();
22  	while (1) {
23  		loop();
24  		yield();
25  	}
26  #endif
27  }
28