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70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
/*
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* Copyright (c) 2010 by Cristian Maglie <c.maglie@bug.st>
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* SPI Master library for arduino.
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of either the GNU General Public License version 2
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* or the GNU Lesser General Public License version 2.1, both as
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* published by the Free Software Foundation.
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*/
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#ifndef _SPI_H_INCLUDED
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#define _SPI_H_INCLUDED
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#include "variant.h"
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#include <stdio.h>
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#define SPI_MODE0 0x02
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#define SPI_MODE1 0x00
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#define SPI_MODE2 0x03
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#define SPI_MODE3 0x01
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enum SPITransferMode {
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SPI_CONTINUE,
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SPI_LAST
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};
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class SPIClass {
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public:
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SPIClass(Spi *_spi, uint32_t _id, void(*_initCb)(void));
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byte transfer(uint8_t _data, SPITransferMode _mode = SPI_LAST) { return transfer(BOARD_SPI_DEFAULT_SS, _data, _mode); }
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byte transfer(byte _channel, uint8_t _data, SPITransferMode _mode = SPI_LAST);
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// SPI Configuration methods
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void attachInterrupt(void);
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void detachInterrupt(void);
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void begin(void);
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void end(void);
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// Attach/Detach pin to/from SPI controller
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void begin(uint8_t _pin);
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void end(uint8_t _pin);
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// These methods sets a parameter on a single pin
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void setBitOrder(uint8_t _pin, BitOrder);
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void setDataMode(uint8_t _pin, uint8_t);
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void setClockDivider(uint8_t _pin, uint8_t);
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// These methods sets the same parameters but on default pin BOARD_SPI_DEFAULT_SS
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void setBitOrder(BitOrder _order) { setBitOrder(BOARD_SPI_DEFAULT_SS, _order); };
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void setDataMode(uint8_t _mode) { setDataMode(BOARD_SPI_DEFAULT_SS, _mode); };
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void setClockDivider(uint8_t _div) { setClockDivider(BOARD_SPI_DEFAULT_SS, _div); };
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private:
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Spi *spi;
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uint32_t id;
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BitOrder bitOrder[SPI_CHANNELS_NUM];
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uint32_t divider[SPI_CHANNELS_NUM];
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uint32_t mode[SPI_CHANNELS_NUM];
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void (*initCb)(void);
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};
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#if SPI_INTERFACES_COUNT > 0
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extern SPIClass SPI;
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#endif
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#endif
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