Firmware2/Marlin/src/HAL/HAL_STM32/persistent_store_sdcard.cpp
2019-08-02 11:09:07 -05:00

105 lines
3.1 KiB
C++

/**
* 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/>.
*
*/
/**
* HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
* Implementation of EEPROM settings in SD Card
*/
#ifdef TARGET_STM32F4
#include "../../inc/MarlinConfig.h"
#if ENABLED(EEPROM_SETTINGS) && NONE(FLASH_EEPROM_EMULATION, SPI_EEPROM, I2C_EEPROM)
#include "../shared/persistent_store_api.h"
#ifndef E2END
#define E2END 0xFFF // 4KB
#endif
#define HAL_EEPROM_SIZE (E2END + 1) // 16KB
#define _ALIGN(x) __attribute__ ((aligned(x))) // SDIO uint32_t* compat.
static char _ALIGN(4) HAL_eeprom_data[HAL_EEPROM_SIZE];
#if ENABLED(SDSUPPORT)
#include "../../sd/cardreader.h"
#define EEPROM_FILENAME "eeprom.dat"
bool PersistentStore::access_start() {
if (!card.isDetected()) return false;
SdFile file, root = card.getroot();
if (!file.open(&root, EEPROM_FILENAME, O_RDONLY))
return false;
int16_t bytes_read = file.read(HAL_eeprom_data, HAL_STM32F4_EEPROM_SIZE);
if (bytes_read < 0) return false;
for (; bytes_read < HAL_STM32F4_EEPROM_SIZE; bytes_read++)
HAL_eeprom_data[bytes_read] = 0xFF;
file.close();
return true;
}
bool PersistentStore::access_finish() {
if (!card.isDetected()) return false;
SdFile file, root = card.getroot();
int16_t bytes_written = 0;
if (file.open(&root, EEPROM_FILENAME, O_CREAT | O_WRITE | O_TRUNC)) {
bytes_written = file.write(HAL_eeprom_data, HAL_STM32F4_EEPROM_SIZE);
file.close();
}
return (bytes_written == HAL_STM32F4_EEPROM_SIZE);
}
#else // !SDSUPPORT
#error "Please define SPI_EEPROM (in Configuration.h) or disable EEPROM_SETTINGS."
#endif // !SDSUPPORT
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;
}
size_t PersistentStore::capacity() { return HAL_STM32F4_EEPROM_SIZE; }
#endif // EEPROM_SETTINGS
#endif // __STM32F4__