137 lines
4.1 KiB
C
137 lines
4.1 KiB
C
/**
|
|
* Copyright (c) 2012 - 2017, 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.
|
|
*
|
|
*/
|
|
/**
|
|
*@file
|
|
*@brief NMVC driver implementation
|
|
*/
|
|
|
|
#include <stdbool.h>
|
|
#include "nrf.h"
|
|
#include "nrf_nvmc.h"
|
|
|
|
|
|
static inline void wait_for_flash_ready(void)
|
|
{
|
|
while (NRF_NVMC->READY == NVMC_READY_READY_Busy) {;}
|
|
}
|
|
|
|
|
|
void nrf_nvmc_page_erase(uint32_t address)
|
|
{
|
|
// Enable erase.
|
|
NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Een;
|
|
__ISB();
|
|
__DSB();
|
|
|
|
// Erase the page
|
|
NRF_NVMC->ERASEPAGE = address;
|
|
wait_for_flash_ready();
|
|
|
|
NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren;
|
|
__ISB();
|
|
__DSB();
|
|
}
|
|
|
|
|
|
void nrf_nvmc_write_byte(uint32_t address, uint8_t value)
|
|
{
|
|
uint32_t byte_shift = address & (uint32_t)0x03;
|
|
uint32_t address32 = address & ~byte_shift; // Address to the word this byte is in.
|
|
uint32_t value32 = (*(uint32_t*)address32 & ~((uint32_t)0xFF << (byte_shift << (uint32_t)3)));
|
|
value32 = value32 + ((uint32_t)value << (byte_shift << 3));
|
|
|
|
// Enable write.
|
|
NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen;
|
|
__ISB();
|
|
__DSB();
|
|
|
|
*(uint32_t*)address32 = value32;
|
|
wait_for_flash_ready();
|
|
|
|
NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren;
|
|
__ISB();
|
|
__DSB();
|
|
}
|
|
|
|
|
|
void nrf_nvmc_write_word(uint32_t address, uint32_t value)
|
|
{
|
|
// Enable write.
|
|
NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen;
|
|
__ISB();
|
|
__DSB();
|
|
|
|
*(uint32_t*)address = value;
|
|
wait_for_flash_ready();
|
|
|
|
NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren;
|
|
__ISB();
|
|
__DSB();
|
|
}
|
|
|
|
|
|
void nrf_nvmc_write_bytes(uint32_t address, const uint8_t * src, uint32_t num_bytes)
|
|
{
|
|
for (uint32_t i = 0; i < num_bytes; i++)
|
|
{
|
|
nrf_nvmc_write_byte(address + i, src[i]);
|
|
}
|
|
}
|
|
|
|
|
|
void nrf_nvmc_write_words(uint32_t address, const uint32_t * src, uint32_t num_words)
|
|
{
|
|
// Enable write.
|
|
NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen;
|
|
__ISB();
|
|
__DSB();
|
|
|
|
for (uint32_t i = 0; i < num_words; i++)
|
|
{
|
|
((uint32_t*)address)[i] = src[i];
|
|
wait_for_flash_ready();
|
|
}
|
|
|
|
NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren;
|
|
__ISB();
|
|
__DSB();
|
|
}
|
|
|