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author | Jack Humbert <jack.humb@gmail.com> | 2017-07-07 21:33:29 +0200 |
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committer | GitHub <noreply@github.com> | 2017-07-07 21:33:29 +0200 |
commit | 9de443cbf10ac41bc15762c9c83f138f51dd3b9a (patch) | |
tree | d8ddcb428e0b7d9773a1e52c42b60bdca2658beb /tmk_core/protocol/lufa/LUFA-git/LUFA/Drivers/Peripheral/AVR8/SPI_AVR8.h | |
parent | 88b3d051b21cb1ddacc6353c5d59b19f03f3a242 (diff) | |
parent | 1c26468ad5a0701e244c99cbcbc547c93b75d515 (diff) | |
download | qmk_firmware-9de443cbf10ac41bc15762c9c83f138f51dd3b9a.tar.gz qmk_firmware-9de443cbf10ac41bc15762c9c83f138f51dd3b9a.tar.xz |
Merge pull request #1471 from qmk/lufa_lib
Update LUFA and move it to /lib/lufa
Diffstat (limited to 'tmk_core/protocol/lufa/LUFA-git/LUFA/Drivers/Peripheral/AVR8/SPI_AVR8.h')
-rw-r--r-- | tmk_core/protocol/lufa/LUFA-git/LUFA/Drivers/Peripheral/AVR8/SPI_AVR8.h | 258 |
1 files changed, 0 insertions, 258 deletions
diff --git a/tmk_core/protocol/lufa/LUFA-git/LUFA/Drivers/Peripheral/AVR8/SPI_AVR8.h b/tmk_core/protocol/lufa/LUFA-git/LUFA/Drivers/Peripheral/AVR8/SPI_AVR8.h deleted file mode 100644 index 1b8f53e2b..000000000 --- a/tmk_core/protocol/lufa/LUFA-git/LUFA/Drivers/Peripheral/AVR8/SPI_AVR8.h +++ /dev/null @@ -1,258 +0,0 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2014. - - dean [at] fourwalledcubicle [dot] com - www.lufa-lib.org -*/ - -/* - Copyright 2014 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 disclaims 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 - * \brief SPI Peripheral Driver (AVR8) - * - * On-chip SPI driver for the 8-bit AVR microcontrollers. - * - * \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 SPI Peripheral Driver (AVR8) - * - * \section Sec_SPI_AVR8_ModDescription Module Description - * Driver for the hardware SPI port available on most 8-bit AVR microcontroller models. This - * module provides an easy to use driver for the setup and transfer of data over the - * AVR's SPI port. - * - * \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. - * - * \section Sec_SPI_AVR8_ExampleUsage Example Usage - * The following snippet is an example of how this module may be used within a typical - * application. - * - * \code - * // Initialize the SPI driver before first use - * SPI_Init(SPI_SPEED_FCPU_DIV_2 | SPI_ORDER_MSB_FIRST | SPI_SCK_LEAD_FALLING | - * SPI_SAMPLE_TRAILING | SPI_MODE_MASTER); - * - * // Send several bytes, ignoring the returned data - * SPI_SendByte(0x01); - * SPI_SendByte(0x02); - * SPI_SendByte(0x03); - * - * // Receive several bytes, sending a dummy 0x00 byte each time - * uint8_t Byte1 = SPI_ReceiveByte(); - * uint8_t Byte2 = SPI_ReceiveByte(); - * uint8_t Byte3 = SPI_ReceiveByte(); - * - * // Send a byte, and store the received byte from the same transaction - * uint8_t ResponseByte = SPI_TransferByte(0xDC); - * \endcode - * - * @{ - */ - -#ifndef __SPI_AVR8_H__ -#define __SPI_AVR8_H__ - - /* Includes: */ - #include "../../../Common/Common.h" - - /* Enable C linkage for C++ Compilers: */ - #if defined(__cplusplus) - extern "C" { - #endif - - /* Preprocessor Checks: */ - #if !defined(__INCLUDE_FROM_SPI_H) - #error Do not include this file directly. Include LUFA/Drivers/Peripheral/SPI.h instead. - #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: */ - /** \name SPI Prescaler Configuration Masks */ - //@{ - /** SPI prescaler mask for \ref SPI_Init(). Divides the system clock by a factor of 2. */ - #define SPI_SPEED_FCPU_DIV_2 SPI_USE_DOUBLESPEED - - /** SPI prescaler mask for \ref SPI_Init(). Divides the system clock by a factor of 4. */ - #define SPI_SPEED_FCPU_DIV_4 0 - - /** SPI prescaler mask for \ref 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 \ref SPI_Init(). Divides the system clock by a factor of 16. */ - #define SPI_SPEED_FCPU_DIV_16 (1 << SPR0) - - /** SPI prescaler mask for \ref 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 \ref 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 \ref SPI_Init(). Divides the system clock by a factor of 128. */ - #define SPI_SPEED_FCPU_DIV_128 ((1 << SPR1) | (1 << SPR0)) - //@} - - /** \name SPI SCK Polarity Configuration Masks */ - //@{ - /** SPI clock polarity mask for \ref SPI_Init(). Indicates that the SCK should lead on the rising edge. */ - #define SPI_SCK_LEAD_RISING (0 << CPOL) - - /** SPI clock polarity mask for \ref SPI_Init(). Indicates that the SCK should lead on the falling edge. */ - #define SPI_SCK_LEAD_FALLING (1 << CPOL) - //@} - - /** \name SPI Sample Edge Configuration Masks */ - //@{ - /** SPI data sample mode mask for \ref SPI_Init(). Indicates that the data should sampled on the leading edge. */ - #define SPI_SAMPLE_LEADING (0 << CPHA) - - /** SPI data sample mode mask for \ref SPI_Init(). Indicates that the data should be sampled on the trailing edge. */ - #define SPI_SAMPLE_TRAILING (1 << CPHA) - //@} - - /** \name SPI Data Ordering Configuration Masks */ - //@{ - /** SPI data order mask for \ref SPI_Init(). Indicates that data should be shifted out MSB first. */ - #define SPI_ORDER_MSB_FIRST (0 << DORD) - - /** SPI data order mask for \ref SPI_Init(). Indicates that data should be shifted out LSB first. */ - #define SPI_ORDER_LSB_FIRST (1 << DORD) - //@} - - /** \name SPI Mode Configuration Masks */ - //@{ - /** SPI mode mask for \ref SPI_Init(). Indicates that the SPI interface should be initialized into slave mode. */ - #define SPI_MODE_SLAVE (0 << MSTR) - - /** SPI mode mask for \ref SPI_Init(). Indicates that the SPI interface should be initialized into master mode. */ - #define SPI_MODE_MASTER (1 << MSTR) - //@} - - /* Inline Functions: */ - /** Initializes 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 \c SPI_SPEED_*, - * \c SPI_SCK_*, \c SPI_SAMPLE_*, \c SPI_ORDER_* and \c SPI_MODE_* masks. - */ - static inline void SPI_Init(const uint8_t SPIOptions); - static inline void SPI_Init(const uint8_t SPIOptions) - { - /* Prevent high rise times on PB.0 (/SS) from forcing a change to SPI slave mode */ - DDRB |= (1 << 0); - PORTB |= (1 << 0); - - DDRB |= ((1 << 1) | (1 << 2)); - DDRB &= ~(1 << 3); - PORTB |= (1 << 3); - - if (SPIOptions & SPI_USE_DOUBLESPEED) - SPSR |= (1 << SPI2X); - else - SPSR &= ~(1 << SPI2X); - - /* Switch /SS to input mode after configuration to allow for forced mode changes */ - DDRB &= ~(1 << 0); - - SPCR = ((1 << SPE) | SPIOptions); - } - - /** Turns off the SPI driver, disabling and returning used hardware to their default configuration. */ - static inline void SPI_Disable(void); - static inline void SPI_Disable(void) - { - DDRB &= ~((1 << 1) | (1 << 2)); - PORTB &= ~((1 << 0) | (1 << 3)); - - SPCR = 0; - SPSR = 0; - } - - /** Retrieves the currently selected SPI mode, once the SPI interface has been configured. - * - * \return \ref SPI_MODE_MASTER if the interface is currently in SPI Master mode, \ref SPI_MODE_SLAVE otherwise - */ - static inline uint8_t SPI_GetCurrentMode(void) ATTR_ALWAYS_INLINE; - static inline uint8_t SPI_GetCurrentMode(void) - { - return (SPCR & SPI_MODE_MASTER); - } - - /** Sends and receives a byte through the SPI interface, blocking until the transfer is complete. - * - * \param[in] Byte Byte to send through the SPI interface. - * - * \return Response byte from the attached SPI device. - */ - static inline uint8_t SPI_TransferByte(const uint8_t Byte) ATTR_ALWAYS_INLINE; - static inline uint8_t SPI_TransferByte(const uint8_t Byte) - { - SPDR = Byte; - 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] Byte Byte to send through the SPI interface. - */ - static inline void SPI_SendByte(const uint8_t Byte) ATTR_ALWAYS_INLINE; - static inline void SPI_SendByte(const uint8_t Byte) - { - SPDR = Byte; - 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_ReceiveByte(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT; - static inline uint8_t SPI_ReceiveByte(void) - { - SPDR = 0x00; - while (!(SPSR & (1 << SPIF))); - return SPDR; - } - - /* Disable C linkage for C++ Compilers: */ - #if defined(__cplusplus) - } - #endif - -#endif - -/** @} */ - |