diff options
Diffstat (limited to 'Marlin/src/HAL/LPC1768/eeprom_sdcard.cpp')
| -rw-r--r-- | Marlin/src/HAL/LPC1768/eeprom_sdcard.cpp | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/Marlin/src/HAL/LPC1768/eeprom_sdcard.cpp b/Marlin/src/HAL/LPC1768/eeprom_sdcard.cpp new file mode 100644 index 0000000..54a64cc --- /dev/null +++ b/Marlin/src/HAL/LPC1768/eeprom_sdcard.cpp @@ -0,0 +1,177 @@ +/** + * Marlin 3D Printer Firmware + * + * Copyright (c) 2020 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 <https://www.gnu.org/licenses/>. + * + */ +#ifdef TARGET_LPC1768 + +#include "../../inc/MarlinConfig.h" + +#if ENABLED(SDCARD_EEPROM_EMULATION) + +#include "../shared/eeprom_api.h" + +#include <chanfs/diskio.h> +#include <chanfs/ff.h> + +extern uint32_t MSC_Aquire_Lock(); +extern uint32_t MSC_Release_Lock(); + +FATFS fat_fs; +FIL eeprom_file; +bool eeprom_file_open = false; + +#ifndef MARLIN_EEPROM_SIZE + #define MARLIN_EEPROM_SIZE size_t(0x1000) // 4KiB of Emulated EEPROM +#endif +size_t PersistentStore::capacity() { return MARLIN_EEPROM_SIZE; } + +bool PersistentStore::access_start() { + const char eeprom_erase_value = 0xFF; + MSC_Aquire_Lock(); + if (f_mount(&fat_fs, "", 1)) { + MSC_Release_Lock(); + return false; + } + FRESULT res = f_open(&eeprom_file, "eeprom.dat", FA_OPEN_ALWAYS | FA_WRITE | FA_READ); + if (res) MSC_Release_Lock(); + + if (res == FR_OK) { + UINT bytes_written; + FSIZE_t file_size = f_size(&eeprom_file); + f_lseek(&eeprom_file, file_size); + while (file_size < capacity() && res == FR_OK) { + res = f_write(&eeprom_file, &eeprom_erase_value, 1, &bytes_written); + file_size++; + } + } + if (res == FR_OK) { + f_lseek(&eeprom_file, 0); + f_sync(&eeprom_file); + eeprom_file_open = true; + } + return res == FR_OK; +} + +bool PersistentStore::access_finish() { + f_close(&eeprom_file); + f_unmount(""); + MSC_Release_Lock(); + eeprom_file_open = false; + return true; +} + +// This extra chit-chat goes away soon, but is helpful for now +// to see errors that are happening in read_data / write_data +static void debug_rw(const bool write, int &pos, const uint8_t *value, const size_t size, const FRESULT s, const size_t total=0) { + PGM_P const rw_str = write ? PSTR("write") : PSTR("read"); + SERIAL_CHAR(' '); + serialprintPGM(rw_str); + SERIAL_ECHOLNPAIR("_data(", pos, ",", int(value), ",", int(size), ", ...)"); + if (total) { + SERIAL_ECHOPGM(" f_"); + serialprintPGM(rw_str); + SERIAL_ECHOPAIR("()=", int(s), "\n size=", int(size), "\n bytes_"); + serialprintPGM(write ? PSTR("written=") : PSTR("read=")); + SERIAL_ECHOLN(total); + } + else + SERIAL_ECHOLNPAIR(" f_lseek()=", int(s)); +} + +// File function return codes for type FRESULT. This goes away soon, but +// is helpful right now to see any errors in read_data and write_data. +// +// typedef enum { +// FR_OK = 0, /* (0) Succeeded */ +// FR_DISK_ERR, /* (1) A hard error occurred in the low level disk I/O layer */ +// FR_INT_ERR, /* (2) Assertion failed */ +// FR_NOT_READY, /* (3) The physical drive cannot work */ +// FR_NO_FILE, /* (4) Could not find the file */ +// FR_NO_PATH, /* (5) Could not find the path */ +// FR_INVALID_NAME, /* (6) The path name format is invalid */ +// FR_DENIED, /* (7) Access denied due to prohibited access or directory full */ +// FR_EXIST, /* (8) Access denied due to prohibited access */ +// FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */ +// FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */ +// FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */ +// FR_NOT_ENABLED, /* (12) The volume has no work area */ +// FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume */ +// FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any problem */ +// FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */ +// FR_LOCKED, /* (16) The operation is rejected according to the file sharing policy */ +// FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */ +// FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > FF_FS_LOCK */ +// FR_INVALID_PARAMETER /* (19) Given parameter is invalid */ +// } FRESULT; + +bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) { + if (!eeprom_file_open) return true; + FRESULT s; + UINT bytes_written = 0; + + s = f_lseek(&eeprom_file, pos); + if (s) { + debug_rw(true, pos, value, size, s); + return s; + } + + s = f_write(&eeprom_file, (void*)value, size, &bytes_written); + if (s) { + debug_rw(true, pos, value, size, s, bytes_written); + return s; + } + crc16(crc, value, size); + pos += size; + return bytes_written != size; // return true for any error +} + +bool PersistentStore::read_data(int &pos, uint8_t *value, const size_t size, uint16_t *crc, const bool writing/*=true*/) { + if (!eeprom_file_open) return true; + UINT bytes_read = 0; + FRESULT s; + s = f_lseek(&eeprom_file, pos); + + if (s) { + debug_rw(false, pos, value, size, s); + return true; + } + + if (writing) { + s = f_read(&eeprom_file, (void*)value, size, &bytes_read); + crc16(crc, value, size); + } + else { + uint8_t temp[size]; + s = f_read(&eeprom_file, (void*)temp, size, &bytes_read); + crc16(crc, temp, size); + } + + if (s) { + debug_rw(false, pos, value, size, s, bytes_read); + return true; + } + + pos += size; + return bytes_read != size; // return true for any error +} + +#endif // SDCARD_EEPROM_EMULATION +#endif // TARGET_LPC1768 |