198 lines
6.9 KiB
C
198 lines
6.9 KiB
C
|
/**
|
||
|
|
* @file spimss.h
|
||
|
|
* @brief Serial Peripheral Interface (SPIMSS) function prototypes and data types.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* ****************************************************************************
|
||
|
|
* Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
|
||
|
|
*
|
||
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
||
|
|
* copy of this software and associated documentation files (the "Software"),
|
||
|
|
* to deal in the Software without restriction, including without limitation
|
||
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
||
|
|
* Software is furnished to do so, subject to the following conditions:
|
||
|
|
*
|
||
|
|
* The above copyright notice and this permission notice shall be included
|
||
|
|
* in all copies or substantial portions of the Software.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
||
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||
|
|
* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
|
||
|
|
* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
||
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
||
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
||
|
|
*
|
||
|
|
* Except as contained in this notice, the name of Maxim Integrated
|
||
|
|
* Products, Inc. shall not be used except as stated in the Maxim Integrated
|
||
|
|
* Products, Inc. Branding Policy.
|
||
|
|
*
|
||
|
|
* The mere transfer of this software does not imply any licenses
|
||
|
|
* of trade secrets, proprietary technology, copyrights, patents,
|
||
|
|
* trademarks, maskwork rights, or any other form of intellectual
|
||
|
|
* property whatsoever. Maxim Integrated Products, Inc. retains all
|
||
|
|
* ownership rights.
|
||
|
|
*
|
||
|
|
* $Date: 2018-12-18 15:37:22 -0600 (Tue, 18 Dec 2018) $
|
||
|
|
* $Revision: 40072 $
|
||
|
|
*
|
||
|
|
*************************************************************************** */
|
||
|
|
|
||
|
|
/* Define to prevent redundant inclusion */
|
||
|
|
#ifndef _SPIMSS_H_
|
||
|
|
#define _SPIMSS_H_
|
||
|
|
|
||
|
|
/* **** Includes **** */
|
||
|
|
#include "mxc_config.h"
|
||
|
|
#include "mxc_sys.h"
|
||
|
|
#include "spimss_regs.h"
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @defgroup spimss SPIMSS
|
||
|
|
* @ingroup spi
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* **** Definitions **** */
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Enumeration type for setting the number data lines to use for communication.
|
||
|
|
*/
|
||
|
|
typedef enum { // ONLY FOR COMPATIBILITY FOR CONSOLIDATION WITH SPY17, NOT USED OR NEEDED
|
||
|
|
DUMMY_1, /**< NOT USED */
|
||
|
|
DUMMY_2, /**< NOT USED */
|
||
|
|
DUMMY_3, /**< NOT USED */
|
||
|
|
} spimss_width_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Structure type representing a SPI Master Transaction request.
|
||
|
|
*/
|
||
|
|
typedef struct spimss_req spimss_req_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Callback function type used in asynchronous SPI Master communication requests.
|
||
|
|
* @details The function declaration for the SPI Master callback is:
|
||
|
|
* @code
|
||
|
|
* void callback(spi_req_t * req, int error_code);
|
||
|
|
* @endcode
|
||
|
|
* | | |
|
||
|
|
* | -----: | :----------------------------------------- |
|
||
|
|
* | \p req | Pointer to a #spi_req object representing the active SPI Master active transaction. |
|
||
|
|
* | \p error_code | An error code if the active transaction had a failure or #E_NO_ERROR if successful. |
|
||
|
|
* @note Callback will execute in interrupt context
|
||
|
|
* @addtogroup spi_async
|
||
|
|
*/
|
||
|
|
typedef void (*spimss_callback_fn)(spimss_req_t * req, int error_code);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Structure definition for an SPI Master Transaction request.
|
||
|
|
* @note When using this structure for an asynchronous operation, the
|
||
|
|
* structure must remain allocated until the callback is completed.
|
||
|
|
* @addtogroup spi_async
|
||
|
|
*/
|
||
|
|
struct spimss_req {
|
||
|
|
uint8_t ssel; /**< Not Used*/
|
||
|
|
uint8_t deass; /**< Not Used*/
|
||
|
|
const void *tx_data; /**< Pointer to a buffer to transmit data from. NULL if undesired. */
|
||
|
|
void *rx_data; /**< Pointer to a buffer to store data received. NULL if undesired.*/
|
||
|
|
spimss_width_t width; /**< Not Used */
|
||
|
|
unsigned len; /**< Number of transfer units to send from the \p tx_data buffer. */
|
||
|
|
unsigned bits; /**< Number of bits in transfer unit (e.g. 8 for byte, 16 for short) */
|
||
|
|
unsigned rx_num; /**< Number of bytes actually read into the \p rx_data buffer. */
|
||
|
|
unsigned tx_num; /**< Number of bytes actually sent from the \p tx_data buffer */
|
||
|
|
spimss_callback_fn callback; /**< Callback function if desired, NULL otherwise */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* **** Function Prototypes **** */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Initialize the spi.
|
||
|
|
* @param spi Pointer to spi module to initialize.
|
||
|
|
* @param mode SPI mode for clock phase and polarity.
|
||
|
|
* @param freq Desired clock frequency.
|
||
|
|
* @param sys_cfg System configuration object
|
||
|
|
*
|
||
|
|
* @return \c #E_NO_ERROR if successful, appropriate error otherwise
|
||
|
|
*/
|
||
|
|
int SPIMSS_Init(mxc_spimss_regs_t *spi, unsigned mode, unsigned freq, const sys_cfg_spimss_t* sys_cfg);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Shutdown SPI module.
|
||
|
|
* @param spi Pointer to SPI regs.
|
||
|
|
*
|
||
|
|
* @return \c #E_NO_ERROR if successful, appropriate error otherwise
|
||
|
|
*/
|
||
|
|
int SPIMSS_Shutdown(mxc_spimss_regs_t *spi);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Execute a master transaction.
|
||
|
|
* @param spi Pointer to spi module.
|
||
|
|
* @param req Pointer to spi request
|
||
|
|
*
|
||
|
|
* @return \c #E_NO_ERROR if successful, @ref
|
||
|
|
* MXC_Error_Codes "error" if unsuccessful.
|
||
|
|
*/
|
||
|
|
int SPIMSS_MasterTrans(mxc_spimss_regs_t *spi, spimss_req_t *req);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Execute SPI transaction based on interrupt handler
|
||
|
|
* @param spi The spi
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
void SPIMSS_Handler(mxc_spimss_regs_t *spi);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Execute a slave transaction.
|
||
|
|
* @param spi Pointer to spi module.
|
||
|
|
* @param req Pointer to spi request
|
||
|
|
*
|
||
|
|
* @return \c #E_NO_ERROR if successful, @ref
|
||
|
|
* MXC_Error_Codes "error" if unsuccessful.
|
||
|
|
*/
|
||
|
|
int SPIMSS_SlaveTrans(mxc_spimss_regs_t *spi, spimss_req_t *req);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Asynchronously read/write SPI Master data
|
||
|
|
*
|
||
|
|
* @param spi Pointer to spi module
|
||
|
|
* @param req Pointer to spi request
|
||
|
|
*
|
||
|
|
* @return \c #E_NO_ERROR if successful, @ref
|
||
|
|
* MXC_Error_Codes "error" if unsuccessful.
|
||
|
|
*/
|
||
|
|
int SPIMSS_MasterTransAsync(mxc_spimss_regs_t *spi, spimss_req_t *req);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Asynchronously read/write SPI Slave data
|
||
|
|
*
|
||
|
|
* @param spi Pointer to spi module
|
||
|
|
* @param req Pointer to spi request
|
||
|
|
*
|
||
|
|
* @return \c #E_NO_ERROR if successful, @ref
|
||
|
|
* MXC_Error_Codes "error" if unsuccessful.
|
||
|
|
*/
|
||
|
|
int SPIMSS_SlaveTransAsync(mxc_spimss_regs_t *spi, spimss_req_t *req);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Aborts an Asynchronous request
|
||
|
|
*
|
||
|
|
* @param req Pointer to spi request
|
||
|
|
* @return \c #E_NO_ERROR if successful, @ref
|
||
|
|
* MXC_Error_Codes "error" if unsuccessful.
|
||
|
|
*/
|
||
|
|
int SPIMSS_AbortAsync(spimss_req_t *req);
|
||
|
|
|
||
|
|
/**@} end of group spimss */
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* _SPIMSS_H_ */
|