86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
/**
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* Marlin 3D Printer Firmware
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*
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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* Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
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* Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
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* Copyright (c) 2016 Victor Perez victor_pv@hotmail.com
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/**
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* HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
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*/
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#ifdef __STM32F1__
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#include "../../inc/MarlinConfig.h"
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#if ENABLED(EEPROM_SETTINGS) && DISABLED(FLASH_EEPROM_EMULATION)
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#include "../shared/persistent_store_api.h"
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#include "../../sd/cardreader.h"
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#define HAL_STM32F1_EEPROM_SIZE 4096
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char HAL_STM32F1_eeprom_content[HAL_STM32F1_EEPROM_SIZE];
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char eeprom_filename[] = "eeprom.dat";
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bool PersistentStore::access_start() {
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if (!card.cardOK) return false;
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int16_t bytes_read = 0;
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constexpr char eeprom_zero = 0xFF;
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card.openFile(eeprom_filename, true);
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bytes_read = card.read(HAL_STM32F1_eeprom_content, HAL_STM32F1_EEPROM_SIZE);
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if (bytes_read < 0) return false;
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for (; bytes_read < HAL_STM32F1_EEPROM_SIZE; bytes_read++)
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HAL_STM32F1_eeprom_content[bytes_read] = eeprom_zero;
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card.closefile();
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return true;
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}
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bool PersistentStore::access_finish() {
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if (!card.cardOK) return false;
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card.openFile(eeprom_filename, true);
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int16_t bytes_written = card.write(HAL_STM32F1_eeprom_content, HAL_STM32F1_EEPROM_SIZE);
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card.closefile();
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return (bytes_written == HAL_STM32F1_EEPROM_SIZE);
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}
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bool PersistentStore::write_data(int &pos, const uint8_t *value, const size_t size, uint16_t *crc) {
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for (int i = 0; i < size; i++)
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HAL_STM32F1_eeprom_content[pos + i] = value[i];
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crc16(crc, value, size);
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pos += size;
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return false;
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}
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bool PersistentStore::read_data(int &pos, uint8_t* value, const size_t size, uint16_t *crc, const bool writing/*=true*/) {
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for (int i = 0; i < size; i++) {
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uint8_t c = HAL_STM32F1_eeprom_content[pos + i];
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if (writing) value[i] = c;
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crc16(crc, &c, 1);
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}
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pos += size;
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return false;
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}
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size_t PersistentStore::capacity() { return HAL_STM32F1_EEPROM_SIZE; }
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#endif // EEPROM_SETTINGS
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#endif // __STM32F1__
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