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fix: verify EEPROM CRC before loading stored parameters

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This commit is contained in:
MrAlaskan 2026-07-20 22:50:46 +08:00
parent 9b8beed836
commit 0673b208ba
1 changed files with 10 additions and 10 deletions
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20
storage/CO_storageEeprom.c
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@ -154,17 +154,17 @@ CO_storageEeprom_init(CO_storage_t* storage, CO_CANmodule_t* CANmodule, void* st
bool_t dataCorrupt = false;
if (signatureInEeprom != signatureOfEntry) {
dataCorrupt = true;
} else {
/* Read data into storage location */
CO_eeprom_readBlock(entry->storageModule, entry->addr, entry->eepromAddr, entry->len);
/* Verify CRC, except for auto storage variables */
if (!isAuto) {
uint16_t crc = crc16_ccitt(entry->addr, entry->len, 0);
if (crc != entry->crc) {
dataCorrupt = true;
}
} else if (!isAuto) {
/* Verify CRC before loading data, so corrupt EEPROM content does not overwrite defaults in RAM. */
uint16_t crc = CO_eeprom_getCrcBlock(entry->storageModule, entry->eepromAddr, entry->len);
if (crc != entry->crc) {
dataCorrupt = true;
} else {
CO_eeprom_readBlock(entry->storageModule, entry->addr, entry->eepromAddr, entry->len);
}
} else {
/* Auto storage entries don't use the CRC guard on startup. */
CO_eeprom_readBlock(entry->storageModule, entry->addr, entry->eepromAddr, entry->len);
}
/* additional info in case of error */