This will become a hardware abstraction layer for my mbed projects. It will make it easier to port sketches from Arduino to mbed
wiring_pulse.c@2:7e1ff33bc76a, 2011-06-04 (annotated)
- Committer:
- rbohne
- Date:
- Sat Jun 04 20:01:33 2011 +0000
- Revision:
- 2:7e1ff33bc76a
added some basic wiring functions
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
rbohne | 2:7e1ff33bc76a | 1 | /* |
rbohne | 2:7e1ff33bc76a | 2 | wiring_pulse.c - pulseIn() function |
rbohne | 2:7e1ff33bc76a | 3 | Part of Arduino - http://www.arduino.cc/ |
rbohne | 2:7e1ff33bc76a | 4 | |
rbohne | 2:7e1ff33bc76a | 5 | Copyright (c) 2005-2006 David A. Mellis |
rbohne | 2:7e1ff33bc76a | 6 | |
rbohne | 2:7e1ff33bc76a | 7 | This library is free software; you can redistribute it and/or |
rbohne | 2:7e1ff33bc76a | 8 | modify it under the terms of the GNU Lesser General Public |
rbohne | 2:7e1ff33bc76a | 9 | License as published by the Free Software Foundation; either |
rbohne | 2:7e1ff33bc76a | 10 | version 2.1 of the License, or (at your option) any later version. |
rbohne | 2:7e1ff33bc76a | 11 | |
rbohne | 2:7e1ff33bc76a | 12 | This library is distributed in the hope that it will be useful, |
rbohne | 2:7e1ff33bc76a | 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
rbohne | 2:7e1ff33bc76a | 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
rbohne | 2:7e1ff33bc76a | 15 | Lesser General Public License for more details. |
rbohne | 2:7e1ff33bc76a | 16 | |
rbohne | 2:7e1ff33bc76a | 17 | You should have received a copy of the GNU Lesser General |
rbohne | 2:7e1ff33bc76a | 18 | Public License along with this library; if not, write to the |
rbohne | 2:7e1ff33bc76a | 19 | Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
rbohne | 2:7e1ff33bc76a | 20 | Boston, MA 02111-1307 USA |
rbohne | 2:7e1ff33bc76a | 21 | |
rbohne | 2:7e1ff33bc76a | 22 | $Id: wiring.c 248 2007-02-03 15:36:30Z mellis $ |
rbohne | 2:7e1ff33bc76a | 23 | */ |
rbohne | 2:7e1ff33bc76a | 24 | |
rbohne | 2:7e1ff33bc76a | 25 | #include "wiring_private.h" |
rbohne | 2:7e1ff33bc76a | 26 | |
rbohne | 2:7e1ff33bc76a | 27 | /* Measures the length (in microseconds) of a pulse on the pin; state is HIGH |
rbohne | 2:7e1ff33bc76a | 28 | * or LOW, the type of pulse to measure. Works on pulses from 2-3 microseconds |
rbohne | 2:7e1ff33bc76a | 29 | * to 3 minutes in length, but must be called at least a few dozen microseconds |
rbohne | 2:7e1ff33bc76a | 30 | * before the start of the pulse. */ |
rbohne | 2:7e1ff33bc76a | 31 | unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeout) |
rbohne | 2:7e1ff33bc76a | 32 | { |
rbohne | 2:7e1ff33bc76a | 33 | //not implemented |
rbohne | 2:7e1ff33bc76a | 34 | return 0; |
rbohne | 2:7e1ff33bc76a | 35 | } |