118 lines
2.7 KiB
C
118 lines
2.7 KiB
C
/* Copyright (c) 2012 Nordic Semiconductor. All Rights Reserved.
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*
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* The information contained herein is property of Nordic Semiconductor ASA.
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* Terms and conditions of usage are described in detail in NORDIC
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* SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
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*
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* Licensees are granted free, non-transferable use of the information. NO
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* WARRANTY of ANY KIND is provided. This heading must NOT be removed from
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* the file.
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*
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* $LastChangedRevision: 17685 $
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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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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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while (NRF_NVMC->READY == NVMC_READY_READY_Busy)
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{
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}
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// Erase the page
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NRF_NVMC->ERASEPAGE = address;
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while (NRF_NVMC->READY == NVMC_READY_READY_Busy)
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{
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}
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren;
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while (NRF_NVMC->READY == NVMC_READY_READY_Busy)
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{
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}
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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 << NVMC_CONFIG_WEN_Pos);
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while (NRF_NVMC->READY == NVMC_READY_READY_Busy)
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{
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}
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*(uint32_t*)address32 = value32;
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while(NRF_NVMC->READY == NVMC_READY_READY_Busy)
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{
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}
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NRF_NVMC->CONFIG = (NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos);
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{
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}
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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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while (NRF_NVMC->READY == NVMC_READY_READY_Busy){
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}
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*(uint32_t*)address = value;
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while (NRF_NVMC->READY == NVMC_READY_READY_Busy){
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}
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren;
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while (NRF_NVMC->READY == NVMC_READY_READY_Busy)
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{
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}
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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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uint32_t i;
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for(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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uint32_t i;
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// Enable write.
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen;
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while (NRF_NVMC->READY == NVMC_READY_READY_Busy)
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{
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}
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for(i=0;i<num_words;i++)
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{
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((uint32_t*)address)[i] = src[i];
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while (NRF_NVMC->READY == NVMC_READY_READY_Busy)
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{
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}
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}
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren;
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while (NRF_NVMC->READY == NVMC_READY_READY_Busy)
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{
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}
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}
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