mirror of https://github.com/noisymime/Arduino.git
94 lines
1.7 KiB
C++
94 lines
1.7 KiB
C++
/*
|
|
* Copyright (c) 2010 by Cristian Maglie <c.maglie@bug.st>
|
|
* SPI Master library for arduino.
|
|
*
|
|
* This file is free software; you can redistribute it and/or modify
|
|
* it under the terms of either the GNU General Public License version 2
|
|
* or the GNU Lesser General Public License version 2.1, both as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#ifndef _SPI_H_INCLUDED
|
|
#define _SPI_H_INCLUDED
|
|
|
|
#include <stdio.h>
|
|
#include <WProgram.h>
|
|
#include <avr/pgmspace.h>
|
|
|
|
enum SPIClockDivider {
|
|
SPI_ClkDiv_4,
|
|
SPI_ClkDiv_16,
|
|
SPI_ClkDiv_64,
|
|
SPI_ClkDiv_128,
|
|
};
|
|
|
|
enum SPIDataOrder {
|
|
SPI_DataOrder_LSB,
|
|
SPI_DataOrder_MSB,
|
|
};
|
|
|
|
enum SPIMode {
|
|
SPI_Mode_SampleRising,
|
|
SPI_Mode_SetupRising,
|
|
SPI_Mode_SampleFalling,
|
|
SPI_Mode_SetupFalling,
|
|
};
|
|
|
|
class SPIClass {
|
|
public:
|
|
SPIClass();
|
|
|
|
inline static byte send(byte _data);
|
|
|
|
// SPI Configuration methods
|
|
|
|
inline static void attachInterrupt();
|
|
inline static void detachInterrupt(); // Default
|
|
|
|
inline static void begin(); // Default
|
|
inline static void end();
|
|
|
|
static void setDataOrder(SPIDataOrder);
|
|
|
|
static void setSPIMode(SPIMode);
|
|
|
|
static void setClockDivider(SPIClockDivider);
|
|
inline static void doubleSpeed();
|
|
inline static void noDoubleSpeed(); // Default
|
|
};
|
|
|
|
extern SPIClass SPI;
|
|
|
|
byte SPIClass::send(byte _data) {
|
|
SPDR = _data;
|
|
while (!(SPSR & _BV(SPIF)))
|
|
;
|
|
return SPDR;
|
|
}
|
|
|
|
void SPIClass::attachInterrupt() {
|
|
SPCR |= _BV(SPIE);
|
|
}
|
|
|
|
void SPIClass::detachInterrupt() {
|
|
SPCR &= ~_BV(SPIE);
|
|
}
|
|
|
|
void SPIClass::begin() {
|
|
SPCR |= _BV(SPE);
|
|
}
|
|
|
|
void SPIClass::end() {
|
|
SPCR &= ~_BV(SPE);
|
|
}
|
|
|
|
void SPIClass::doubleSpeed() {
|
|
SPSR |= _BV(SPI2X);
|
|
}
|
|
|
|
void SPIClass::noDoubleSpeed() {
|
|
SPSR &= ~_BV(SPI2X);
|
|
}
|
|
|
|
#endif
|