182 lines
4.7 KiB
C
182 lines
4.7 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2021 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* @file hal_efl.c
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* @brief Embedded Flash Driver code.
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*
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* @addtogroup HAL_EFL
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* @{
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*/
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#include "hal.h"
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#if (HAL_USE_EFL == TRUE) || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver local definitions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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static flash_error_t efl_acquire_exclusive(void *instance) {
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#if (EFL_USE_MUTUAL_EXCLUSION == TRUE)
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EFlashDriver *devp = (EFlashDriver *)instance;
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osalMutexLock(&devp->mutex);
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return FLASH_NO_ERROR;
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#else
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(void)instance;
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osalDbgAssert(false, "mutual exclusion not enabled");
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return FLASH_ERROR_UNIMPLEMENTED;
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#endif
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}
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static flash_error_t efl_release_exclusive(void *instance) {
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#if (EFL_USE_MUTUAL_EXCLUSION == TRUE)
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EFlashDriver *devp = (EFlashDriver *)instance;
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osalMutexUnlock(&devp->mutex);
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return FLASH_NO_ERROR;
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#else
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(void)instance;
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osalDbgAssert(false, "mutual exclusion not enabled");
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return FLASH_ERROR_UNIMPLEMENTED;
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#endif
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}
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/*===========================================================================*/
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/* Driver local variables and types. */
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/*===========================================================================*/
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static const struct EFlashDriverVMT vmt = {
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(size_t)0,
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efl_lld_get_descriptor,
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efl_lld_read,
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efl_lld_program,
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efl_lld_start_erase_all,
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efl_lld_start_erase_sector,
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efl_lld_query_erase,
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efl_lld_verify_erase,
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efl_acquire_exclusive,
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efl_release_exclusive
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};
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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/**
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* @brief Embedded Flash Driver initialization.
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* @note This function is implicitly invoked by @p halInit(), there is
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* no need to explicitly initialize the driver.
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*
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* @init
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*/
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void eflInit(void) {
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efl_lld_init();
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}
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/**
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* @brief Initializes a generic @p EFlashDriver object.
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*
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* @param[out] eflp pointer to a @p EFlashDriver structure
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*
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* @init
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*/
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void eflObjectInit(EFlashDriver *eflp) {
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eflp->vmt = &vmt;
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eflp->state = FLASH_STOP;
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#if EFL_USE_MUTUAL_EXCLUSION == TRUE
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osalMutexObjectInit(&eflp->mutex);
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#endif
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}
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/**
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* @brief Configures and starts the driver.
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*
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* @param[in] eflp pointer to a @p EFlashDriver structure
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* @param[in] config pointer to a configuration structure.
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* If this parameter is set to @p NULL then a default
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* configuration is used.
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* @return The operation status.
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*
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* @api
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*/
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msg_t eflStart(EFlashDriver *eflp, const EFlashConfig *config) {
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msg_t msg;
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osalDbgCheck(eflp != NULL);
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osalSysLock();
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osalDbgAssert((eflp->state == FLASH_STOP) || (eflp->state == FLASH_READY),
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"invalid state");
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eflp->config = config;
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#if defined(EFL_LLD_ENHANCED_API)
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msg = efl_lld_start(eflp);
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#else
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efl_lld_start(eflp);
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msg = HAL_RET_SUCCESS;
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#endif
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if (msg == HAL_RET_SUCCESS) {
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eflp->state = FLASH_READY;
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}
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else {
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eflp->state = FLASH_STOP;
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}
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osalSysUnlock();
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return msg;
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}
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/**
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* @brief Stops the driver.
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*
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* @param[in] eflp pointer to a @p EFlashDriver structure
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*
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* @api
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*/
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void eflStop(EFlashDriver *eflp) {
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osalDbgCheck(eflp != NULL);
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osalSysLock();
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osalDbgAssert((eflp->state == FLASH_STOP) || (eflp->state == FLASH_READY),
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"invalid state");
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efl_lld_stop(eflp);
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eflp->state = FLASH_STOP;
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osalSysUnlock();
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}
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#endif /* HAL_USE_EFL == TRUE */
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/** @} */
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