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- /**
- * Copyright (c) 2016 - 2020, Nordic Semiconductor ASA
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form, except as embedded into a Nordic
- * Semiconductor ASA integrated circuit in a product or a software update for
- * such product, must reproduce the above copyright notice, this list of
- * conditions and the following disclaimer in the documentation and/or other
- * materials provided with the distribution.
- *
- * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
- * contributors may be used to endorse or promote products derived from this
- * software without specific prior written permission.
- *
- * 4. This software, with or without modification, must only be used with a
- * Nordic Semiconductor ASA integrated circuit.
- *
- * 5. Any software provided in binary form under this license must not be reverse
- * engineered, decompiled, modified and/or disassembled.
- *
- * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
- * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
- #include "sdk_common.h"
- #if NRF_MODULE_ENABLED(NRF_FSTORAGE)
- #include "nrf_fstorage_nvmc.h"
- #include <stdint.h>
- #include <string.h>
- #include <stdbool.h>
- #include "nrf_nvmc.h"
- #include "nrf_atomic.h"
- static nrf_fstorage_info_t m_flash_info =
- {
- #if defined(NRF51)
- .erase_unit = 1024,
- #elif defined(NRF52_SERIES)
- .erase_unit = 4096,
- #endif
- .program_unit = 4,
- .rmap = true,
- .wmap = false,
- };
- /* An operation initiated by fstorage is ongoing. */
- static nrf_atomic_flag_t m_flash_operation_ongoing;
- /* Send event to the event handler. */
- static void event_send(nrf_fstorage_t const * p_fs,
- nrf_fstorage_evt_id_t evt_id,
- void const * p_src,
- uint32_t addr,
- uint32_t len,
- void * p_param)
- {
- if (p_fs->evt_handler == NULL)
- {
- /* Nothing to do. */
- return;
- }
- nrf_fstorage_evt_t evt =
- {
- .result = NRF_SUCCESS,
- .id = evt_id,
- .addr = addr,
- .p_src = p_src,
- .len = len,
- .p_param = p_param,
- };
- p_fs->evt_handler(&evt);
- }
- static ret_code_t init(nrf_fstorage_t * p_fs, void * p_param)
- {
- UNUSED_PARAMETER(p_param);
- p_fs->p_flash_info = &m_flash_info;
- return NRF_SUCCESS;
- }
- static ret_code_t uninit(nrf_fstorage_t * p_fs, void * p_param)
- {
- UNUSED_PARAMETER(p_fs);
- UNUSED_PARAMETER(p_param);
- (void) nrf_atomic_flag_clear(&m_flash_operation_ongoing);
- return NRF_SUCCESS;
- }
- static ret_code_t read(nrf_fstorage_t const * p_fs, uint32_t src, void * p_dest, uint32_t len)
- {
- UNUSED_PARAMETER(p_fs);
- memcpy(p_dest, (uint32_t*)src, len);
- return NRF_SUCCESS;
- }
- static ret_code_t write(nrf_fstorage_t const * p_fs,
- uint32_t dest,
- void const * p_src,
- uint32_t len,
- void * p_param)
- {
- if (nrf_atomic_flag_set_fetch(&m_flash_operation_ongoing))
- {
- return NRF_ERROR_BUSY;
- }
- nrf_nvmc_write_words(dest, (uint32_t*)p_src, (len / m_flash_info.program_unit));
- /* Clear the flag before sending the event, to allow API calls in the event context. */
- (void) nrf_atomic_flag_clear(&m_flash_operation_ongoing);
- event_send(p_fs, NRF_FSTORAGE_EVT_WRITE_RESULT, p_src, dest, len, p_param);
- return NRF_SUCCESS;
- }
- static ret_code_t erase(nrf_fstorage_t const * p_fs,
- uint32_t page_addr,
- uint32_t len,
- void * p_param)
- {
- uint32_t progress = 0;
- if (nrf_atomic_flag_set_fetch(&m_flash_operation_ongoing))
- {
- return NRF_ERROR_BUSY;
- }
- while (progress != len)
- {
- nrf_nvmc_page_erase(page_addr + (progress * m_flash_info.erase_unit));
- progress++;
- }
- /* Clear the flag before sending the event, to allow API calls in the event context. */
- (void) nrf_atomic_flag_clear(&m_flash_operation_ongoing);
- event_send(p_fs, NRF_FSTORAGE_EVT_ERASE_RESULT, NULL, page_addr, len, p_param);
- return NRF_SUCCESS;
- }
- static uint8_t const * rmap(nrf_fstorage_t const * p_fs, uint32_t addr)
- {
- UNUSED_PARAMETER(p_fs);
- return (uint8_t*)addr;
- }
- static uint8_t * wmap(nrf_fstorage_t const * p_fs, uint32_t addr)
- {
- UNUSED_PARAMETER(p_fs);
- UNUSED_PARAMETER(addr);
- /* Not supported. */
- return NULL;
- }
- static bool is_busy(nrf_fstorage_t const * p_fs)
- {
- UNUSED_PARAMETER(p_fs);
- return m_flash_operation_ongoing;
- }
- /* The exported API. */
- nrf_fstorage_api_t nrf_fstorage_nvmc =
- {
- .init = init,
- .uninit = uninit,
- .read = read,
- .write = write,
- .erase = erase,
- .rmap = rmap,
- .wmap = wmap,
- .is_busy = is_busy
- };
- #endif // NRF_FSTORAGE_ENABLED
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