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CovidBracelet
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Automatically increment sequence number

This commit is contained in:
H1ghBre4k3r 2021-03-31 17:06:38 +02:00 committed by Patrick Rathje
parent da234280b8
commit f367e22db6
1 changed files with 10 additions and 13 deletions
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23
src/storage.c
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@ -9,14 +9,11 @@
#include "sequencenumber.h"
#include "storage.h"
// Get external flash device
#if (CONFIG_SPI_NOR - 0) || \
DT_NODE_HAS_STATUS(DT_INST(0, jedec_spi_nor), okay)
#if (CONFIG_SPI_NOR - 0) || DT_NODE_HAS_STATUS(DT_INST(0, jedec_spi_nor), okay)
#define FLASH_DEVICE DT_LABEL(DT_INST(0, jedec_spi_nor))
#define FLASH_NAME "JEDEC SPI-NOR"
#elif (CONFIG_NORDIC_QSPI_NOR - 0) || \
DT_NODE_HAS_STATUS(DT_INST(0, nordic_qspi_nor), okay)
#elif (CONFIG_NORDIC_QSPI_NOR - 0) || DT_NODE_HAS_STATUS(DT_INST(0, nordic_qspi_nor), okay)
#define FLASH_DEVICE DT_LABEL(DT_INST(0, nordic_qspi_nor))
#define FLASH_NAME "JEDEC QSPI-NOR"
#else
@ -34,7 +31,6 @@ static struct nvs_fs fs;
struct k_mutex fs_mutex;
// Information about currently stored contacts
static stored_contacts_information_t contact_information = {.oldest_contact = 0, .count = 0};
@ -68,15 +64,17 @@ int save_storage_information() {
if (rc <= 0) {
printk("Something went wrong after saving storage information.\n");
}
return rc;
}
void increment_stored_contact_counter() {
record_sequence_number_t get_next_sequence_number() {
if (contact_information.count >= MAX_CONTACTS) {
contact_information.oldest_contact = sn_increment(contact_information.oldest_contact);
} else {
contact_information.count++;
}
save_storage_information();
return get_latest_sequence_number();
}
int init_contact_storage(void) {
@ -120,12 +118,11 @@ int load_contact(contact_t* dest, record_sequence_number_t sn) {
}
int add_contact(contact_t* src) {
record_sequence_number_t curr_sn = sn_increment(get_latest_sequence_number());
record_sequence_number_t curr_sn = get_next_sequence_number();
storage_id_t id = convert_sn_to_storage_id(curr_sn);
int rc = nvs_write(&fs, id, src, sizeof(*src));
if (rc > 0) {
increment_stored_contact_counter();
return 0;
}
return rc;
@ -136,11 +133,11 @@ int delete_contact(record_sequence_number_t sn) {
storage_id_t id = convert_sn_to_storage_id(sn);
int rc = nvs_delete(&fs, id);
if (!rc) {
// TODO lome: what happens, if contacts in the middle are deleted?
// Magic
contact_information.count--;
if (sn_equal(sn, get_oldest_sequence_number())) {
if (sn_equal(sn, get_latest_sequence_number())) {
contact_information.count--;
} else if (sn_equal(sn, get_oldest_sequence_number())) {
contact_information.oldest_contact = sn_increment(contact_information.oldest_contact);
contact_information.count--;
}
save_storage_information();
}