X-Git-Url: http://git.linex4red.de/pub/lufa.git/blobdiff_plain/a7aaa45ec4c3f415bf6073a5cc016635d5ecf77d..071fd8ce536522ca6365580d64cd465e4c18a031:/LUFA/Drivers/Peripheral/AVR8/SPI.h diff --git a/LUFA/Drivers/Peripheral/AVR8/SPI.h b/LUFA/Drivers/Peripheral/AVR8/SPI.h deleted file mode 100644 index 42ff8e7c3..000000000 --- a/LUFA/Drivers/Peripheral/AVR8/SPI.h +++ /dev/null @@ -1,205 +0,0 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2010. - - dean [at] fourwalledcubicle [dot] com - www.fourwalledcubicle.com -*/ - -/* - Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com) - - Permission to use, copy, modify, distribute, and sell this - software and its documentation for any purpose is hereby granted - without fee, provided that the above copyright notice appear in - all copies and that both that the copyright notice and this - permission notice and warranty disclaimer appear in supporting - documentation, and that the name of the author not be used in - advertising or publicity pertaining to distribution of the - software without specific, written prior permission. - - The author disclaim all warranties with regard to this - software, including all implied warranties of merchantability - and fitness. In no event shall the author be liable for any - special, indirect or consequential damages or any damages - whatsoever resulting from loss of use, data or profits, whether - in an action of contract, negligence or other tortious action, - arising out of or in connection with the use or performance of - this software. -*/ - -/** \file - * - * SPI driver for the 8-bit AVRs. - * - * \note This file should not be included directly. It is automatically included as needed by the SPI driver - * dispatch header located in LUFA/Drivers/Peripheral/SPI.h. - */ - -/** \ingroup Group_SPI - * @defgroup Group_SPI_AVR8 8-Bit AVR SPI Driver - * - * SPI driver for the 8-bit AVRs. - * - * \note This file should not be included directly. It is automatically included as needed by the ADC driver - * dispatch header located in LUFA/Drivers/Peripheral/SPI.h. - * - * @{ - */ - -#ifndef __SPI_AVR8_H__ -#define __SPI_AVR8_H__ - - /* Includes: */ - #include - #include - - /* Preprocessor Checks: */ - #if !defined(__INCLUDE_FROM_SPI_H) - #error Do not include this file directly. Include LUFA/Drivers/Peripheral/SPI.h instead. - #endif - - /* Enable C linkage for C++ Compilers: */ - #if defined(__cplusplus) - extern "C" { - #endif - - /* Private Interface - For use in library only: */ - #if !defined(__DOXYGEN__) - /* Macros: */ - #define SPI_USE_DOUBLESPEED (1 << SPE) - #endif - - /* Public Interface - May be used in end-application: */ - /* Macros: */ - /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 2. */ - #define SPI_SPEED_FCPU_DIV_2 SPI_USE_DOUBLESPEED - - /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 4. */ - #define SPI_SPEED_FCPU_DIV_4 0 - - /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 8. */ - #define SPI_SPEED_FCPU_DIV_8 (SPI_USE_DOUBLESPEED | (1 << SPR0)) - - /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 16. */ - #define SPI_SPEED_FCPU_DIV_16 (1 << SPR0) - - /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 32. */ - #define SPI_SPEED_FCPU_DIV_32 (SPI_USE_DOUBLESPEED | (1 << SPR1)) - - /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 64. */ - #define SPI_SPEED_FCPU_DIV_64 (SPI_USE_DOUBLESPEED | (1 << SPR1) | (1 << SPR0)) - - /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 128. */ - #define SPI_SPEED_FCPU_DIV_128 ((1 << SPR1) | (1 << SPR0)) - - /** SPI clock polarity mask for SPI_Init(). Indicates that the SCK should lead on the rising edge. */ - #define SPI_SCK_LEAD_RISING (0 << CPOL) - - /** SPI clock polarity mask for SPI_Init(). Indicates that the SCK should lead on the falling edge. */ - #define SPI_SCK_LEAD_FALLING (1 << CPOL) - - /** SPI data sample mode mask for SPI_Init(). Indicates that the data should sampled on the leading edge. */ - #define SPI_SAMPLE_LEADING (0 << CPHA) - - /** SPI data sample mode mask for SPI_Init(). Indicates that the data should be sampled on the trailing edge. */ - #define SPI_SAMPLE_TRAILING (1 << CPHA) - - /** SPI mode mask for SPI_Init(). Indicates that the SPI interface should be initialized into slave mode. */ - #define SPI_MODE_SLAVE (0 << MSTR) - - /** SPI mode mask for SPI_Init(). Indicates that the SPI interface should be initialized into master mode. */ - #define SPI_MODE_MASTER (1 << MSTR) - - /* Inline Functions: */ - /** Initialises the SPI subsystem, ready for transfers. Must be called before calling any other - * SPI routines. - * - * \param[in] SPIOptions SPI Options, a mask consisting of one of each of the SPI_SPEED_*, - * SPI_SCK_*, SPI_SAMPLE_* and SPI_MODE_* masks - */ - static inline void SPI_Init(const uintN_t SPIOptions) - { - DDRB |= ((1 << 1) | (1 << 2)); - PORTB |= ((1 << 0) | (1 << 3)); - - SPCR = ((1 << SPE) | SPIOptions); - - if (SPIOptions & SPI_USE_DOUBLESPEED) - SPSR |= (1 << SPI2X); - else - SPSR &= ~(1 << SPI2X); - } - - /** Turns off the SPI driver, disabling and returning used hardware to their default configuration. */ - static inline void SPI_ShutDown(void) - { - DDRB &= ~((1 << 1) | (1 << 2)); - PORTB &= ~((1 << 0) | (1 << 3)); - - SPCR = 0; - SPSR = 0; - } - - /** Sends and receives a byte through the SPI interface, blocking until the transfer is complete. - * - * \param[in] Data Byte to send through the SPI interface - * - * \return Response byte from the attached SPI device - */ - static inline uint8_t SPI_Transfer(const uint8_t Data) ATTR_ALWAYS_INLINE; - static inline uint8_t SPI_Transfer(const uint8_t Data) - { - SPDR = Data; - while (!(SPSR & (1 << SPIF))); - return SPDR; - } - - /** Sends a byte through the SPI interface, blocking until the transfer is complete. The response - * byte sent to from the attached SPI device is ignored. - * - * \param[in] Data Byte to send through the SPI interface - */ - static inline void SPI_Send(const uint8_t Data) ATTR_ALWAYS_INLINE; - static inline void SPI_Send(const uint8_t Data) - { - SPDR = Data; - while (!(SPSR & (1 << SPIF))); - } - - /** Sends a dummy byte through the SPI interface, blocking until the transfer is complete. The response - * byte from the attached SPI device is returned. - * - * \return The response byte from the attached SPI device - */ - static inline uint8_t SPI_Receive(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT; - static inline uint8_t SPI_Receive(void) - { - SPDR = 0x00; - while (!(SPSR & (1 << SPIF))); - return SPDR; - } - - #if defined(__DOXYGEN__) - /** Alias for \ref SPI_Transfer(), for compatibility with legacy LUFA applications. */ - static inline uint8_t SPI_TransferByte(const uint8_t Byte) ATTR_DEPRECATED; - - /** Alias for \ref SPI_Send(), for compatibility with legacy LUFA applications. */ - static inline void SPI_SendByte(const uint8_t Byte) ATTR_DEPRECATED; - - /** Alias for \ref SPI_Receive(), for compatibility with legacy LUFA applications. */ - static inline uint8_t SPI_ReceiveByte(void) ATTR_DEPRECATED; - #else - #define SPI_TransferByte(x) SPI_Transfer(x) - #define SPI_SendByte(x) SPI_Send(x) - #define SPI_ReceiveByte() SPI_Receive() - #endif - - /* Disable C linkage for C++ Compilers: */ - #if defined(__cplusplus) - } - #endif - -#endif - -/** @} */