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Simple Libraries
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libsimpletools
source
setOutputs.c
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/*
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* @file setOutputs.c
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*
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* @author Andy Lindsay
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*
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* @version 0.85
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*
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* @copyright Copyright (C) Parallax, Inc. 2012. See end of file for
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* terms of use (MIT License).
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*
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* @brief setOutputs function source, see simpletools.h for documentation.
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*
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* @detail Please submit bug reports, suggestions, and improvements to
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* this code to editor@parallax.com.
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*/
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#include "
simpletools.h
"
// simpletools function prototypes
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// setOutputs function definition
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void
set_outputs
(
int
endPin,
int
startPin,
unsigned
int
pattern)
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{
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if
(endPin < startPin)
// Handle reverse pin size
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{
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int
temp = startPin;
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startPin = endPin;
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endPin = temp;
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}
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unsigned
int
andMask = -1;
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andMask <<= (31 - (endPin-startPin));
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andMask >>= (31 - endPin);
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andMask = ~andMask;
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unsigned
int
orMask = pattern << (startPin);
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OUTA
= (
OUTA
& andMask) | orMask;
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}
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OUTA
#define OUTA
Use to set output pin states when corresponding DIRA bits are 1.
Definition:
propeller1.h:157
set_outputs
void set_outputs(int endPin, int startPin, unsigned int pattern)
Set output states for a contiguous group of I/O pins.
Definition:
setOutputs.c:20
simpletools.h
This library provides convenient functions for a variety of microcontroller I/O, timing,...
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