diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/fstorage/nrf_fstorage_nvmc.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/fstorage/nrf_fstorage_nvmc.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/fstorage/nrf_fstorage_nvmc.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/fstorage/nrf_fstorage_nvmc.c new file mode 100644 index 0000000..14b1859 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/fstorage/nrf_fstorage_nvmc.c @@ -0,0 +1,217 @@ +/** + * Copyright (c) 2016 - 2018, 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 |