53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
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/*
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Bit-banged SPI class
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Author: Nick Gammon
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Date: 24 March 2013
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PERMISSION TO DISTRIBUTE
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Permission is hereby granted, free of charge, to any person obtaining a copy of this software
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and associated documentation files (the "Software"), to deal in the Software without restriction,
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including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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LIMITATION OF LIABILITY
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The software is provided "as is", without warranty of any kind, express or implied,
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including but not limited to the warranties of merchantability, fitness for a particular
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purpose and noninfringement. In no event shall the authors or copyright holders be liable
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for any claim, damages or other liability, whether in an action of contract,
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tort or otherwise, arising from, out of or in connection with the software
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or the use or other dealings in the software.
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*/
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#include <Arduino.h>
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class bitBangedSPI
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{
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// pins
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const int mosi_;
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const int miso_;
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const int sck_;
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// delay for clock being high
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unsigned long delayUs_;
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public:
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// constructor
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bitBangedSPI (const int mosi, const int miso, const int sck, const unsigned long delayUs = 4)
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: mosi_ (mosi), miso_ (miso), sck_ (sck), delayUs_ (delayUs) { }
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void begin ();
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byte transfer (byte input);
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enum { NO_PIN = -1 };
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}; // end of bitBangedSPI
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