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/*
* wiring_shift.c - shiftOut() function
* Part of Arduino - http://www.arduino.cc/
*
* Copyright (c) 2005-2006 David A. Mellis
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
* $Id: wiring.c 248 2007-02-03 15:36:30Z mellis $
*/
#include <wirish/wirish.h>
void shiftOut(uint8 dataPin, uint8 clockPin, uint8 bitOrder, uint8 val) {
int i;
for (i = 0; i < 8; i++) {
if (bitOrder == LSBFIRST) {
digitalWrite(dataPin, !!(val & (1 << i)));
} else {
digitalWrite(dataPin, !!(val & (1 << (7 - i))));
}
digitalWrite(clockPin, HIGH);
digitalWrite(clockPin, LOW);
}
}
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