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btstack_tlv_flash_sector: erase existing tag after writing new value

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This commit is contained in:
Matthias Ringwald 2017-08-14 17:38:39 +02:00
parent 4a0a7b450d
commit 4f924c8f35
1 changed files with 15 additions and 3 deletions
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18
platform/embedded/btstack_tlv_flash_sector.c
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@ -225,7 +225,6 @@ static int btstack_tlv_flash_sector_get_tag(void * context, uint32_t tag, uint8_
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);
tag_index = it.offset;
@ -266,6 +265,20 @@ static void btstack_tlv_flash_sector_store_tag(void * context, uint32_t tag, con
// then entry
self->hal_flash_sector_impl->write(self->hal_flash_sector_context, self->current_bank, self->write_offset, entry, sizeof(entry));
// overwrite old entries (if exists)
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) && it.offset < self->write_offset){
if (it.tag == tag){
log_info("Erase old 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);
}
// done
self->write_offset += sizeof(entry) + data_size;
}
@ -280,9 +293,8 @@ static void btstack_tlv_flash_sector_delete_tag(void * context, uint32_t tag){
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);
log_info("Erase 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));