From 584dece7b0c982de8731f7400c94b5034aef89e7 Mon Sep 17 00:00:00 2001
From: "David A. Mellis" <d.mellis@arduino.cc>
Date: Sat, 7 Nov 2009 17:05:21 +0000
Subject: Moving things around.

---
 cores/arduino/wiring_pulse.c | 66 --------------------------------------------
 1 file changed, 66 deletions(-)
 delete mode 100755 cores/arduino/wiring_pulse.c

(limited to 'cores/arduino/wiring_pulse.c')

diff --git a/cores/arduino/wiring_pulse.c b/cores/arduino/wiring_pulse.c
deleted file mode 100755
index 8f232f1..0000000
--- a/cores/arduino/wiring_pulse.c
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
-  wiring_pulse.c - pulseIn() 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 "wiring_private.h"
-#include "pins_arduino.h"
-
-/* Measures the length (in microseconds) of a pulse on the pin; state is HIGH
- * or LOW, the type of pulse to measure.  Works on pulses from 2-3 microseconds
- * to 3 minutes in length, but must be called at least a few dozen microseconds
- * before the start of the pulse. */
-unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeout)
-{
-	// cache the port and bit of the pin in order to speed up the
-	// pulse width measuring loop and achieve finer resolution.  calling
-	// digitalRead() instead yields much coarser resolution.
-	uint8_t bit = digitalPinToBitMask(pin);
-	uint8_t port = digitalPinToPort(pin);
-	uint8_t stateMask = (state ? bit : 0);
-	unsigned long width = 0; // keep initialization out of time critical area
-	
-	// convert the timeout from microseconds to a number of times through
-	// the initial loop; it takes 16 clock cycles per iteration.
-	unsigned long numloops = 0;
-	unsigned long maxloops = microsecondsToClockCycles(timeout) / 16;
-	
-	// wait for any previous pulse to end
-	while ((*portInputRegister(port) & bit) == stateMask)
-		if (numloops++ == maxloops)
-			return 0;
-	
-	// wait for the pulse to start
-	while ((*portInputRegister(port) & bit) != stateMask)
-		if (numloops++ == maxloops)
-			return 0;
-	
-	// wait for the pulse to stop
-	while ((*portInputRegister(port) & bit) == stateMask)
-		width++;
-
-	// convert the reading to microseconds. The loop has been determined
-	// to be 10 clock cycles long and have about 16 clocks between the edge
-	// and the start of the loop. There will be some error introduced by
-	// the interrupt handlers.
-	return clockCyclesToMicroseconds(width * 10 + 16); 
-}
-- 
cgit v1.2.3-18-g5258