46 lines
926 B
C
46 lines
926 B
C
/*
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* Copyright (c) 2017 Nordic Semiconductor ASA
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* Copyright (c) 2015 Runtime Inc
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "fcb.h"
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#include "fcb_priv.h"
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int
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fcb_rotate(struct fcb *fcb)
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{
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struct flash_area *fap;
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int rc = 0;
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rc = k_mutex_lock(&fcb->f_mtx, K_FOREVER);
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if (rc) {
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return FCB_ERR_ARGS;
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}
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rc = flash_area_erase(fcb->f_oldest, 0, fcb->f_oldest->fa_size);
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if (rc) {
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rc = FCB_ERR_FLASH;
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goto out;
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}
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if (fcb->f_oldest == fcb->f_active.fe_area) {
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/*
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* Need to create a new active area, as we're wiping
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* the current.
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*/
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fap = fcb_getnext_area(fcb, fcb->f_oldest);
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rc = fcb_sector_hdr_init(fcb, fap, fcb->f_active_id + 1);
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if (rc) {
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goto out;
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}
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fcb->f_active.fe_area = fap;
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fcb->f_active.fe_elem_off = sizeof(struct fcb_disk_area);
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fcb->f_active_id++;
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}
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fcb->f_oldest = fcb_getnext_area(fcb, fcb->f_oldest);
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out:
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k_mutex_unlock(&fcb->f_mtx);
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return rc;
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}
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