diff options
Diffstat (limited to 'LUFA/Drivers/Peripheral/AVR32/SPI.h')
| -rw-r--r-- | LUFA/Drivers/Peripheral/AVR32/SPI.h | 174 |
1 files changed, 0 insertions, 174 deletions
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 <avr32/io.h>
- #include <stdbool.h>
-
- /* 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
-
-/** @} */
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