hal_wspi_lld.c

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/*
    ChibiOS - Copyright (C) 2006..2018 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    hal_wspi_lld.c
 * @brief   PLATFORM WSPI subsystem low level driver source.
 *
 * @addtogroup WSPI
 * @{
 */
 
#include "hal.h"
 
#if (HAL_USE_WSPI == TRUE) || defined(__DOXYGEN__)
 
/*===========================================================================*/
/* Driver local definitions.                                                 */
/*===========================================================================*/
 
/*===========================================================================*/
/* Driver exported variables.                                                */
/*===========================================================================*/
 
/** @brief WSPID1 driver identifier.*/
#if (PLATFORM_WSPI_USE_WSPI1 == TRUE) || defined(__DOXYGEN__)
WSPIDriver WSPID1;
#endif
 
/*===========================================================================*/
/* Driver local variables and types.                                         */
/*===========================================================================*/
 
/*===========================================================================*/
/* Driver local functions.                                                   */
/*===========================================================================*/
 
/*===========================================================================*/
/* Driver interrupt handlers.                                                */
/*===========================================================================*/
 
/*===========================================================================*/
/* Driver exported functions.                                                */
/*===========================================================================*/
 
/**
 * @brief   Low level WSPI driver initialization.
 *
 * @notapi
 */
void wspi_lld_init(void) {
 
#if PLATFORM_WSPI_USE_WSPI1
  wspiObjectInit(&WSPID1);
#endif
}
 
/**
 * @brief   Configures and activates the WSPI peripheral.
 *
 * @param[in] wspip     pointer to the @p WSPIDriver object
 *
 * @notapi
 */
void wspi_lld_start(WSPIDriver *wspip) {
 
  /* If in stopped state then full initialization.*/
  if (wspip->state == WSPI_STOP) {
#if PLATFORM_WSPI_USE_WSPI1
    if (&WSPID1 == wspip) {
    }
#endif
 
    /* Common initializations.*/
  }
 
  /* WSPI setup and enable.*/
}
 
/**
 * @brief   Deactivates the WSPI peripheral.
 *
 * @param[in] wspip     pointer to the @p WSPIDriver object
 *
 * @notapi
 */
void wspi_lld_stop(WSPIDriver *wspip) {
 
  /* If in ready state then disables WSPI.*/
  if (wspip->state == WSPI_READY) {
 
    /* WSPI disable.*/
 
    /* Stopping involved clocks.*/
#if PLATFORM_WSPI_USE_WSPI1
    if (&WSPID1 == wspip) {
    }
#endif
  }
}
 
/**
 * @brief   Sends a command without data phase.
 * @post    At the end of the operation the configured callback is invoked.
 *
 * @param[in] wspip     pointer to the @p WSPIDriver object
 * @param[in] cmdp      pointer to the command descriptor
 *
 * @notapi
 */
void wspi_lld_command(WSPIDriver *wspip, const wspi_command_t *cmdp) {
 
  (void)wspip;
  (void)cmdp;
}
 
/**
 * @brief   Sends a command with data over the WSPI bus.
 * @post    At the end of the operation the configured callback is invoked.
 *
 * @param[in] wspip     pointer to the @p WSPIDriver object
 * @param[in] cmdp      pointer to the command descriptor
 * @param[in] n         number of bytes to send
 * @param[in] txbuf     the pointer to the transmit buffer
 *
 * @notapi
 */
void wspi_lld_send(WSPIDriver *wspip, const wspi_command_t *cmdp,
                   size_t n, const uint8_t *txbuf) {
 
  (void)wspip;
  (void)cmdp;
  (void)n;
  (void)txbuf;
}
 
/**
 * @brief   Sends a command then receives data over the WSPI bus.
 * @post    At the end of the operation the configured callback is invoked.
 *
 * @param[in] wspip     pointer to the @p WSPIDriver object
 * @param[in] cmdp      pointer to the command descriptor
 * @param[in] n         number of bytes to send
 * @param[out] rxbuf    the pointer to the receive buffer
 *
 * @notapi
 */
void wspi_lld_receive(WSPIDriver *wspip, const wspi_command_t *cmdp,
                      size_t n, uint8_t *rxbuf) {
 
  (void)wspip;
  (void)cmdp;
  (void)n;
  (void)rxbuf;
}
 
#if (WSPI_SUPPORTS_MEMMAP == TRUE) || defined(__DOXYGEN__)
/**
 * @brief   Maps in memory space a WSPI flash device.
 * @pre     The memory flash device must be initialized appropriately
 *          before mapping it in memory space.
 *
 * @param[in] wspip     pointer to the @p WSPIDriver object
 * @param[in] cmdp      pointer to the command descriptor
 * @param[out] addrp    pointer to the memory start address of the mapped
 *                      flash or @p NULL
 *
 * @notapi
 */
void wspi_lld_map_flash(WSPIDriver *wspip,
                        const wspi_command_t *cmdp,
                        uint8_t **addrp) {
 
  (void)wspip;
  (void)cmdp;
  (void)addrp;
}
 
/**
 * @brief   Unmaps from memory space a WSPI flash device.
 * @post    The memory flash device must be re-initialized for normal
 *          commands exchange.
 *
 * @param[in] wspip     pointer to the @p WSPIDriver object
 *
 * @notapi
 */
void wspi_lld_unmap_flash(WSPIDriver *wspip) {
 
  (void)wspip;
}
#endif /* WSPI_SUPPORTS_MEMMAP == TRUE */
 
#endif /* HAL_USE_WSPI */
 
/** @} */