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48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
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/*
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* Copyright (C) 2016 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup cpu_nrf5x_common
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* @{
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*
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* @file
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* @brief Low-level flash page driver implementation
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*
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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*
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* @}
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*/
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#include "cpu.h"
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#include "assert.h"
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#include "periph/flashpage.h"
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void flashpage_write(int page, void *data)
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{
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assert(page < FLASHPAGE_NUMOF);
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uint32_t *page_addr = (uint32_t *)flashpage_addr(page);
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uint32_t *data_addr = (uint32_t *)data;
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/* erase given page */
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Een;
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NRF_NVMC->ERASEPAGE = (uint32_t)page_addr;
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while (NRF_NVMC->READY == 0) {}
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/* write data to page */
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if (data != NULL) {
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen;
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for (unsigned i = 0; i < (FLASHPAGE_SIZE / 4); i++) {
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*page_addr++ = data_addr[i];
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}
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}
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/* finish up */
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NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren;
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}
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