df71d3444d
seperate files from latest SDK (currently 14.2.0) from good old non- secure bootloader sdk 11
137 lines
4.1 KiB
C
137 lines
4.1 KiB
C
/**
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* Copyright (c) 2012 - 2017, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/**
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*@file
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*@brief NMVC driver implementation
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*/
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#include <stdbool.h>
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#include "nrf.h"
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#include "nrf_nvmc.h"
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static inline void wait_for_flash_ready(void)
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{
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while (NRF_NVMC->READY == NVMC_READY_READY_Busy) {;}
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}
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void nrf_nvmc_page_erase(uint32_t address)
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{
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// Enable erase.
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Een;
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__ISB();
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__DSB();
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// Erase the page
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NRF_NVMC->ERASEPAGE = address;
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wait_for_flash_ready();
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren;
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__ISB();
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__DSB();
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}
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void nrf_nvmc_write_byte(uint32_t address, uint8_t value)
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{
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uint32_t byte_shift = address & (uint32_t)0x03;
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uint32_t address32 = address & ~byte_shift; // Address to the word this byte is in.
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uint32_t value32 = (*(uint32_t*)address32 & ~((uint32_t)0xFF << (byte_shift << (uint32_t)3)));
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value32 = value32 + ((uint32_t)value << (byte_shift << 3));
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// Enable write.
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen;
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__ISB();
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__DSB();
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*(uint32_t*)address32 = value32;
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wait_for_flash_ready();
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren;
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__ISB();
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__DSB();
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}
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void nrf_nvmc_write_word(uint32_t address, uint32_t value)
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{
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// Enable write.
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen;
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__ISB();
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__DSB();
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*(uint32_t*)address = value;
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wait_for_flash_ready();
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren;
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__ISB();
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__DSB();
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}
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void nrf_nvmc_write_bytes(uint32_t address, const uint8_t * src, uint32_t num_bytes)
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{
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for (uint32_t i = 0; i < num_bytes; i++)
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{
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nrf_nvmc_write_byte(address + i, src[i]);
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}
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}
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void nrf_nvmc_write_words(uint32_t address, const uint32_t * src, uint32_t num_words)
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{
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// Enable write.
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen;
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__ISB();
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__DSB();
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for (uint32_t i = 0; i < num_words; i++)
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{
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((uint32_t*)address)[i] = src[i];
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wait_for_flash_ready();
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}
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren;
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__ISB();
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__DSB();
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}
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