You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
2.7 KiB
92 lines
2.7 KiB
/**
|
|
* Marlin 3D Printer Firmware
|
|
* Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* Implementation of EEPROM settings in SD Card
|
|
*/
|
|
|
|
#if defined(ARDUINO_ARCH_STM32) && !defined(STM32GENERIC)
|
|
|
|
#include "../../inc/MarlinConfig.h"
|
|
|
|
#if ENABLED(SDCARD_EEPROM_EMULATION)
|
|
|
|
#include "../shared/eeprom_api.h"
|
|
#include "../../sd/cardreader.h"
|
|
|
|
#define EEPROM_FILENAME "eeprom.dat"
|
|
|
|
#ifndef MARLIN_EEPROM_SIZE
|
|
#define MARLIN_EEPROM_SIZE 0x1000 // 4KB
|
|
#endif
|
|
size_t PersistentStore::capacity() { return MARLIN_EEPROM_SIZE; }
|
|
|
|
#define _ALIGN(x) __attribute__ ((aligned(x)))
|
|
static char _ALIGN(4) HAL_eeprom_data[MARLIN_EEPROM_SIZE];
|
|
|
|
bool PersistentStore::access_start() {
|
|
if (!card.isMounted()) return false;
|
|
|
|
SdFile file, root = card.getroot();
|
|
if (!file.open(&root, EEPROM_FILENAME, O_RDONLY))
|
|
return true;
|
|
|
|
int bytes_read = file.read(HAL_eeprom_data, MARLIN_EEPROM_SIZE);
|
|
if (bytes_read < 0) return false;
|
|
for (; bytes_read < MARLIN_EEPROM_SIZE; bytes_read++)
|
|
HAL_eeprom_data[bytes_read] = 0xFF;
|
|
file.close();
|
|
return true;
|
|
}
|
|
|
|
bool PersistentStore::access_finish() {
|
|
if (!card.isMounted()) return false;
|
|
|
|
SdFile file, root = card.getroot();
|
|
int bytes_written = 0;
|
|
if (file.open(&root, EEPROM_FILENAME, O_CREAT | O_WRITE | O_TRUNC)) {
|
|
bytes_written = file.write(HAL_eeprom_data, MARLIN_EEPROM_SIZE);
|
|
file.close();
|
|
}
|
|
return (bytes_written == MARLIN_EEPROM_SIZE);
|
|
}
|
|
|
|
bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
|
|
for (size_t i = 0; i < size; i++)
|
|
HAL_eeprom_data[pos + i] = value[i];
|
|
crc16(crc, value, size);
|
|
pos += size;
|
|
return false;
|
|
}
|
|
|
|
bool PersistentStore::read_data(int &pos, uint8_t* value, const size_t size, uint16_t *crc, const bool writing/*=true*/) {
|
|
for (size_t i = 0; i < size; i++) {
|
|
uint8_t c = HAL_eeprom_data[pos + i];
|
|
if (writing) value[i] = c;
|
|
crc16(crc, &c, 1);
|
|
}
|
|
pos += size;
|
|
return false;
|
|
}
|
|
|
|
#endif // SDCARD_EEPROM_EMULATION
|
|
#endif // STM32 && !STM32GENERIC
|
|
|