mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-26 08:47:38 +00:00
235 lines
7.7 KiB
C
Executable File
235 lines
7.7 KiB
C
Executable File
/*
|
|
ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
/**
|
|
* @file AT91SAM7/spi_lld.h
|
|
* @brief AT91SAM7 low level SPI driver header.
|
|
*
|
|
* @addtogroup SPI
|
|
* @{
|
|
*/
|
|
|
|
#ifndef _SPI_LLD_H_
|
|
#define _SPI_LLD_H_
|
|
|
|
#if HAL_USE_SPI || defined(__DOXYGEN__)
|
|
|
|
/*===========================================================================*/
|
|
/* Device compatibility.. */
|
|
/*===========================================================================*/
|
|
|
|
#if SAM7_PLATFORM == SAM7S512 || SAM7_PLATFORM == SAM7S256 || SAM7_PLATFORM == SAM7S128 || SAM7_PLATFORM == SAM7S64
|
|
#define SPI0_MISO AT91C_PA12_MISO
|
|
#define SPI0_MOSI AT91C_PA13_MOSI
|
|
#define SPI0_SCK AT91C_PA14_SPCK
|
|
#define SPI0_CS0 11 // PA11
|
|
#elif SAM7_PLATFORM == SAM7X512 || SAM7_PLATFORM == SAM7X256 || SAM7_PLATFORM == SAM7X128
|
|
#define SPI0_MISO AT91C_PA16_SPI0_MISO
|
|
#define SPI0_MOSI AT91C_PA17_SPI0_MOSI
|
|
#define SPI0_SCK AT91C_PA18_SPI0_SPCK
|
|
#define SPI0_CS0 12 // PA12
|
|
#define SPI1_MISO AT91C_PA24_SPI1_MISO
|
|
#define SPI1_MOSI AT91C_PA23_SPI1_MOSI
|
|
#define SPI1_SCK AT91C_PA22_SPI1_SPCK
|
|
#define SPI1_CS0 21 // PA21
|
|
#elif SAM7_PLATFORM == SAM7A3
|
|
#define SPI0_MISO AT91C_PA15_SPI0_MISO
|
|
#define SPI0_MOSI AT91C_PA16_SPI0_MOSI
|
|
#define SPI0_SCK AT91C_PA17_SPI0_SPCK
|
|
#define SPI0_CS0 11 // PA11
|
|
#define SPI1_MISO AT91C_PA8_SPI1_MISO
|
|
#define SPI1_MOSI AT91C_PA9_SPI1_MOSI
|
|
#define SPI1_SCK AT91C_PA10_SPI1_SPCK
|
|
#define SPI1_CS0 4 // PA4
|
|
#else
|
|
#error "SAM7 platform not supported"
|
|
#endif
|
|
|
|
#if defined (AT91C_BASE_SPI)
|
|
#define AT91C_BASE_SPI0 AT91C_BASE_SPI
|
|
#define AT91C_ID_SPI0 AT91C_ID_SPI
|
|
#endif
|
|
|
|
/*===========================================================================*/
|
|
/* Driver constants. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver pre-compile time settings. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief SPID1 enable switch (SPI0 device).
|
|
* @details If set to @p TRUE the support for SPI0 is included.
|
|
* @note The default is @p TRUE.
|
|
*/
|
|
#if !defined(AT91SAM7_SPI_USE_SPI0) || defined(__DOXYGEN__)
|
|
#define AT91SAM7_SPI_USE_SPI0 TRUE
|
|
#endif
|
|
|
|
/**
|
|
* @brief SPID2 enable switch (SPI1 device).
|
|
* @details If set to @p TRUE the support for SPI1 is included.
|
|
* @note The default is @p TRUE.
|
|
*/
|
|
#if !defined(AT91SAM7_SPI_USE_SPI1) || defined(__DOXYGEN__)
|
|
#define AT91SAM7_SPI_USE_SPI1 TRUE
|
|
#endif
|
|
|
|
/**
|
|
* @brief SPI0 device interrupt priority level setting.
|
|
*/
|
|
#if !defined(AT91SAM7_SPI0_PRIORITY) || defined(__DOXYGEN__)
|
|
#define AT91SAM7_SPI0_PRIORITY (AT91C_AIC_PRIOR_HIGHEST - 1)
|
|
#endif
|
|
|
|
/**
|
|
* @brief SPI1 device interrupt priority level setting.
|
|
*/
|
|
#if !defined(AT91SAM7_SPI1_PRIORITY) || defined(__DOXYGEN__)
|
|
#define AT91SAM7_SPI1_PRIORITY (AT91C_AIC_PRIOR_HIGHEST - 1)
|
|
#endif
|
|
|
|
/*===========================================================================*/
|
|
/* Derived constants and error checks. */
|
|
/*===========================================================================*/
|
|
|
|
#if defined (AT91C_BASE_SPI) && AT91SAM7_SPI_USE_SPI1
|
|
#error "SPI1 not present"
|
|
#endif
|
|
|
|
#if !AT91SAM7_SPI_USE_SPI0 && !AT91SAM7_SPI_USE_SPI1
|
|
#error "SPI driver activated but no SPI peripheral assigned"
|
|
#endif
|
|
|
|
/*===========================================================================*/
|
|
/* Driver data structures and types. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief Type of a structure representing an SPI driver.
|
|
*/
|
|
typedef struct SPIDriver SPIDriver;
|
|
|
|
/**
|
|
* @brief SPI notification callback type.
|
|
*
|
|
* @param[in] spip pointer to the @p SPIDriver object triggering the
|
|
* callback
|
|
*/
|
|
typedef void (*spicallback_t)(SPIDriver *spip);
|
|
|
|
/**
|
|
* @brief Driver configuration structure.
|
|
*/
|
|
typedef struct {
|
|
/**
|
|
* @brief Operation complete callback or @p NULL.
|
|
*/
|
|
spicallback_t end_cb;
|
|
/* End of the mandatory fields.*/
|
|
/**
|
|
* @brief The chip select line port.
|
|
*/
|
|
ioportid_t ssport;
|
|
/**
|
|
* @brief The chip select line pad number.
|
|
*/
|
|
uint16_t sspad;
|
|
/**
|
|
* @brief SPI Chip Select Register initialization data.
|
|
*/
|
|
uint32_t csr;
|
|
} SPIConfig;
|
|
|
|
/**
|
|
* @brief Structure representing a SPI driver.
|
|
*/
|
|
struct SPIDriver {
|
|
/**
|
|
* @brief Driver state.
|
|
*/
|
|
spistate_t state;
|
|
/**
|
|
* @brief Current configuration data.
|
|
*/
|
|
const SPIConfig *config;
|
|
#if SPI_USE_WAIT || defined(__DOXYGEN__)
|
|
/**
|
|
* @brief Waiting thread.
|
|
*/
|
|
Thread *thread;
|
|
#endif /* SPI_USE_WAIT */
|
|
#if SPI_USE_MUTUAL_EXCLUSION || defined(__DOXYGEN__)
|
|
#if CH_USE_MUTEXES || defined(__DOXYGEN__)
|
|
/**
|
|
* @brief Mutex protecting the bus.
|
|
*/
|
|
Mutex mutex;
|
|
#elif CH_USE_SEMAPHORES
|
|
Semaphore semaphore;
|
|
#endif
|
|
#endif /* SPI_USE_MUTUAL_EXCLUSION */
|
|
#if defined(SPI_DRIVER_EXT_FIELDS)
|
|
SPI_DRIVER_EXT_FIELDS
|
|
#endif
|
|
/* End of the mandatory fields.*/
|
|
/**
|
|
* @brief Pointer to the SPIx registers block.
|
|
*/
|
|
AT91PS_SPI spi;
|
|
};
|
|
|
|
/*===========================================================================*/
|
|
/* Driver macros. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* External declarations. */
|
|
/*===========================================================================*/
|
|
|
|
#if AT91SAM7_SPI_USE_SPI0 && !defined(__DOXYGEN__)
|
|
extern SPIDriver SPID1;
|
|
#endif
|
|
|
|
#if AT91SAM7_SPI_USE_SPI1 && !defined(__DOXYGEN__)
|
|
extern SPIDriver SPID2;
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
void spi_lld_init(void);
|
|
void spi_lld_start(SPIDriver *spip);
|
|
void spi_lld_stop(SPIDriver *spip);
|
|
void spi_lld_select(SPIDriver *spip);
|
|
void spi_lld_unselect(SPIDriver *spip);
|
|
void spi_lld_ignore(SPIDriver *spip, size_t n);
|
|
void spi_lld_exchange(SPIDriver *spip, size_t n,
|
|
const void *txbuf, void *rxbuf);
|
|
void spi_lld_send(SPIDriver *spip, size_t n, const void *txbuf);
|
|
void spi_lld_receive(SPIDriver *spip, size_t n, void *rxbuf);
|
|
uint16_t spi_lld_polled_exchange(SPIDriver *spip, uint16_t frame);
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* HAL_USE_SPI */
|
|
|
|
#endif /* _SPI_LLD_H_ */
|
|
|
|
/** @} */
|