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- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
- #ifdef ARDUINO_ARCH_ESP32
-
- #include "../../inc/MarlinConfig.h"
-
- #if ENABLED(EEPROM_SETTINGS) && DISABLED(FLASH_EEPROM_EMULATION)
-
- #include "../shared/persistent_store_api.h"
-
- #include <SPIFFS.h>
- #include <FS.h>
- #include "spiffs.h"
-
- #define HAL_ESP32_EEPROM_SIZE 4096
- #define HAL_ESP32_EEPROM_FILE_PATH "/eeprom.dat"
-
- File eeprom_file;
-
- bool PersistentStore::access_start() {
- if (spiffs_initialized) {
- eeprom_file = SPIFFS.open(HAL_ESP32_EEPROM_FILE_PATH, "r+");
-
- size_t file_size = eeprom_file.size();
- if (file_size < HAL_ESP32_EEPROM_SIZE) {
- SERIAL_ECHO_MSG("SPIFFS EEPROM settings file " HAL_ESP32_EEPROM_FILE_PATH " is too small or did not exist, expanding.");
- SERIAL_ECHO_START(); SERIAL_ECHOLNPAIR(" file size: ", file_size, ", required size: ", HAL_ESP32_EEPROM_SIZE);
-
- // mode r+ does not allow to expand the file (at least on ESP32 SPIFFS9, so we close, reopen "a", append, close, reopen "r+"
- eeprom_file.close();
-
- eeprom_file = SPIFFS.open(HAL_ESP32_EEPROM_FILE_PATH, "a");
- for (size_t i = eeprom_file.size(); i < HAL_ESP32_EEPROM_SIZE; i++)
- eeprom_file.write(0xFF);
- eeprom_file.close();
-
- eeprom_file = SPIFFS.open(HAL_ESP32_EEPROM_FILE_PATH, "r+");
- file_size = eeprom_file.size();
- if (file_size < HAL_ESP32_EEPROM_SIZE) {
- SERIAL_ERROR_MSG("Failed to expand " HAL_ESP32_EEPROM_FILE_PATH " to required size. SPIFFS partition full?");
- SERIAL_ERROR_START(); SERIAL_ECHOLNPAIR(" file size: ", file_size, ", required size: ", HAL_ESP32_EEPROM_SIZE);
- SERIAL_ERROR_START(); SERIAL_ECHOLNPAIR(" SPIFFS used bytes: ", SPIFFS.usedBytes(), ", total bytes: ", SPIFFS.totalBytes());
- }
- }
- return true;
- }
- return false;
- }
-
- bool PersistentStore::access_finish() {
- eeprom_file.close();
- return true;
- }
-
- bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
- if (!eeprom_file.seek(pos)) return true; // return true for any error
- if (eeprom_file.write(value, size) != size) return true;
-
- crc16(crc, value, size);
- pos += size;
-
- return false;
- }
-
- bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
- if (!eeprom_file.seek(pos)) return true; // return true for any error
-
- if (writing) {
- if (eeprom_file.read(value, size) != size) return true;
- crc16(crc, value, size);
- }
- else {
- uint8_t tmp[size];
- if (eeprom_file.read(tmp, size) != size) return true;
- crc16(crc, tmp, size);
- }
-
- pos += size;
-
- return false;
- }
-
- size_t PersistentStore::capacity() { return HAL_ESP32_EEPROM_SIZE; }
-
- #endif // EEPROM_SETTINGS
- #endif // ARDUINO_ARCH_ESP32
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