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btstack_tlv_flash_sector: implement delete by overwriting tag with zero tag

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This commit is contained in:
Matthias Ringwald 2017-08-14 17:34:48 +02:00
parent 884aa5c407
commit 4a0a7b450d
1 changed files with 15 additions and 1 deletions
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16
platform/embedded/btstack_tlv_flash_sector.c
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@ -274,7 +274,21 @@ static void btstack_tlv_flash_sector_store_tag(void * context, uint32_t tag, con
* @param tag
*/
static void btstack_tlv_flash_sector_delete_tag(void * context, uint32_t tag){
btstack_tlv_flash_sector_store_tag(context, tag, NULL, 0);
btstack_tlv_flash_sector_t * self = (btstack_tlv_flash_sector_t *) context;
tlv_iterator_t it;
btstack_tlv_flash_sector_iterator_init(self, &it, self->current_bank);
while (btstack_tlv_flash_sector_iterator_has_next(self, &it)){
log_info("Offset %u, tag %x", it.offset, it.tag);
if (it.tag == tag){
log_info("Found tag '%x' at position %u", tag, it.offset);
// overwrite tag with invalid tag
uint32_t zero_tag = 0;
self->hal_flash_sector_impl->write(self->hal_flash_sector_context, self->current_bank, it.offset, (uint8_t*) &zero_tag, sizeof(zero_tag));
}
tlv_iterator_fetch_next(self, &it);
}
}
static const btstack_tlv_t btstack_tlv_flash_sector = {