1  /* Teensyduino Core Library
 2   * http://www.pjrc.com/teensy/
 3   * Copyright (c) 2014 PJRC.COM, LLC.
 4   *
 5   * Permission is hereby granted, free of charge, to any person obtaining
 6   * a copy of this software and associated documentation files (the
 7   * "Software"), to deal in the Software without restriction, including
 8   * without limitation the rights to use, copy, modify, merge, publish,
 9   * distribute, sublicense, and/or sell copies of the Software, and to
10   * permit persons to whom the Software is furnished to do so, subject to
11   * the following conditions:
12   *
13   * 1. The above copyright notice and this permission notice shall be 
14   * included in all copies or substantial portions of the Software.
15   *
16   * 2. If the Software is incorporated into a build system that allows 
17   * selection among a list of target devices, then similar target
18   * devices manufactured by PJRC.COM must be included in the list of
19   * target devices and selectable in the same manner.
20   *
21   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
25   * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
26   * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
27   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
28   * SOFTWARE.
29   */
30  
31  #include "core_pins.h"
32  //#include "HardwareSerial.h"
33  
34  void yield(void) __attribute__ ((weak));
35  void yield(void)
36  {
37  	//static uint8_t running=0;
38  
39  	//if (running) return; // TODO: does this need to be atomic?
40  	//running = 1;
41  	//if (Serial.available()) serialEvent();
42  	//if (Serial1.available()) serialEvent1();
43  	//if (Serial2.available()) serialEvent2();
44  	//if (Serial3.available()) serialEvent3();
45  	//running = 0;
46  };