Firmware2/Marlin/src/HAL/HAL_STM32F1/persistent_store_sdcard.cpp
2019-01-11 20:42:11 -06:00

87 lines
2.7 KiB
C++

/**
* Marlin 3D Printer Firmware
*
* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
* Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
* Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
* Copyright (c) 2016 Victor Perez victor_pv@hotmail.com
*
* 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/>.
*
*/
/**
* HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
*/
#ifdef __STM32F1__
#include "../../inc/MarlinConfig.h"
#if ENABLED(EEPROM_SETTINGS) && DISABLED(FLASH_EEPROM_EMULATION)
#include "../shared/persistent_store_api.h"
#include "../../sd/cardreader.h"
#define HAL_STM32F1_EEPROM_SIZE 4096
char HAL_STM32F1_eeprom_content[HAL_STM32F1_EEPROM_SIZE];
char eeprom_filename[] = "eeprom.dat";
bool PersistentStore::access_start() {
if (!card.isDetected()) return false;
int16_t bytes_read = 0;
constexpr char eeprom_zero = 0xFF;
card.openFile(eeprom_filename, true);
bytes_read = card.read(HAL_STM32F1_eeprom_content, HAL_STM32F1_EEPROM_SIZE);
if (bytes_read < 0) return false;
for (; bytes_read < HAL_STM32F1_EEPROM_SIZE; bytes_read++)
HAL_STM32F1_eeprom_content[bytes_read] = eeprom_zero;
card.closefile();
return true;
}
bool PersistentStore::access_finish() {
if (!card.isDetected()) return false;
card.openFile(eeprom_filename, true);
int16_t bytes_written = card.write(HAL_STM32F1_eeprom_content, HAL_STM32F1_EEPROM_SIZE);
card.closefile();
return (bytes_written == HAL_STM32F1_EEPROM_SIZE);
}
bool PersistentStore::write_data(int &pos, const uint8_t *value, const size_t size, uint16_t *crc) {
for (int i = 0; i < size; i++)
HAL_STM32F1_eeprom_content[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 (int i = 0; i < size; i++) {
uint8_t c = HAL_STM32F1_eeprom_content[pos + i];
if (writing) value[i] = c;
crc16(crc, &c, 1);
}
pos += size;
return false;
}
size_t PersistentStore::capacity() { return HAL_STM32F1_EEPROM_SIZE; }
#endif // EEPROM_SETTINGS
#endif // __STM32F1__