X-Git-Url: http://git.linex4red.de/pub/lufa.git/blobdiff_plain/a7aaa45ec4c3f415bf6073a5cc016635d5ecf77d..071fd8ce536522ca6365580d64cd465e4c18a031:/LUFA/Drivers/Peripheral/AVR32/SPI.h diff --git a/LUFA/Drivers/Peripheral/AVR32/SPI.h b/LUFA/Drivers/Peripheral/AVR32/SPI.h deleted file mode 100644 index 379ce7f18..000000000 --- a/LUFA/Drivers/Peripheral/AVR32/SPI.h +++ /dev/null @@ -1,174 +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 32-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_AVR32 32-Bit AVR SPI Driver - * - * SPI driver for the 32-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_AVR32_H__ -#define __SPI_AVR32_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 - - /* Public Interface - May be used in end-application: */ - /* Macros: */ - /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 1. */ - #define SPI_SPEED_FCPU_DIV_1 0 - - /** SPI prescaler mask for SPI_Init(). Divides the system clock by a factor of 32. */ - #define SPI_SPEED_FCPU_DIV_32 AVR32_SPI_MR_FDIV_MASK - - /** SPI chip selection mode for direct peripheral-to-CS pin connections. */ - #define SPI_CS_4BITDECODER AVR32_SPI_MR_PSDEC_MASK - - /** SPI chip selection mode for peripheral CS pin connections through a 4-bit decoder. */ - #define SPI_CS_DIRECT 0 - - /** SPI mode mask for SPI_Init(). Indicates that the SPI interface should be initialized into slave mode. */ - #define SPI_MODE_SLAVE 0 - - /** SPI mode mask for SPI_Init(). Indicates that the SPI interface should be initialized into master mode. */ - #define SPI_MODE_MASTER AVR32_SPI_MR_MSTR_MASK - - /* Inline Functions: */ - /** Initialises the SPI subsystem, ready for transfers. Must be called before calling any other - * SPI routines. - * - * \note The individual AVR32 chip select control registers are left at their defaults; it is up to the user - * to configure these seperately once the SPI module has been initialized. - * - * \note The physical GPIO pins for the AVR32's SPI are not altered; it is up to the user to - * configure these seperately to connect the SPI module to the desired GPIO pins via the - * GPIO MUX registers. - * - * \param[in] SPIOptions SPI Options, a mask consisting of one of each of the SPI_SPEED_*, - * SPI_CS_* and SPI_MODE_* masks - */ - static inline void SPI_Init(const uintN_t SPIOptions) - { - AVR32_PM.pbamask = (1 << 5); - - AVR32_SPI.CR.swrst = true; - AVR32_SPI.CR.spien = true; - AVR32_SPI.mr = SPIOptions; - } - - /** Turns off the SPI driver, disabling and returning used hardware to their default configuration. */ - static inline void SPI_ShutDown(void) - { - AVR32_SPI.cr = AVR32_SPI_CR_SPIDIS_MASK; - - AVR32_PM.pbamask &= ~(1 << 5); - } - - /** Sends and receives a transfer through the SPI interface, blocking until the transfer is complete. - * The width of the data that is transferred is dependant on the settings of the currently selected - * peripheral. - * - * \param[in] Data Data to send through the SPI interface - * - * \return Response data from the attached SPI device - */ - static inline uint16_t SPI_Transfer(const uint16_t Data) ATTR_ALWAYS_INLINE; - static inline uint16_t SPI_Transfer(const uint16_t Data) - { - while (!(AVR32_SPI.SR.tdre)); - AVR32_SPI.TDR.td = Data; - - while ((AVR32_SPI.sr & (AVR32_SPI_SR_RDRF_MASK | AVR32_SPI_SR_TXEMPTY_MASK)) != - (AVR32_SPI_SR_RDRF_MASK | AVR32_SPI_SR_TXEMPTY_MASK)); - return AVR32_SPI.RDR.rd; - } - - /** Sends a transfer through the SPI interface, blocking until the transfer is complete. The response - * data sent to from the attached SPI device is ignored. The width of the data that is transferred is - * dependant on the settings of the currently selected peripheral. - * - * \param[in] Data Data to send through the SPI interface - */ - static inline void SPI_Send(const uint16_t Data) ATTR_ALWAYS_INLINE; - static inline void SPI_Send(const uint16_t Data) - { - while (!(AVR32_SPI.SR.tdre)); - AVR32_SPI.TDR.td = Data; - } - - /** Sends a dummy transfer through the SPI interface, blocking until the transfer is complete. The response - * data from the attached SPI device is returned. The width of the data that is transferred is dependant on - * the settings of the currently selected peripheral. - * - * \return The response data from the attached SPI device - */ - static inline uint16_t SPI_Receive(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT; - static inline uint16_t SPI_Receive(void) - { - while (!(AVR32_SPI.SR.tdre)); - AVR32_SPI.TDR.td = 0x0000; - - while ((AVR32_SPI.sr & (AVR32_SPI_SR_RDRF_MASK | AVR32_SPI_SR_TXEMPTY_MASK)) != - (AVR32_SPI_SR_RDRF_MASK | AVR32_SPI_SR_TXEMPTY_MASK)); - return AVR32_SPI.RDR.rd; - } - - /* Disable C linkage for C++ Compilers: */ - #if defined(__cplusplus) - } - #endif - -#endif - -/** @} */