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- /**
- * Marlin 3D Printer Firmware
- * Copyright (C) 2016, 2017 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/>.
- *
- */
- #ifdef TARGET_LPC1768
-
- #include "../../inc/MarlinConfig.h"
-
- #if ENABLED(EEPROM_SETTINGS)
-
- #include "../persistent_store_api.h"
-
- #include "chanfs/diskio.h"
- #include "chanfs/ff.h"
-
- extern uint32_t MSC_Aquire_Lock();
- extern uint32_t MSC_Release_Lock();
-
- namespace HAL {
- namespace PersistentStore {
-
- FATFS fat_fs;
- FIL eeprom_file;
-
- bool 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 <= E2END && 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);
- }
- return res == FR_OK;
- }
-
- bool access_finish() {
- f_close(&eeprom_file);
- f_unmount("");
- MSC_Release_Lock();
- return true;
- }
-
- // File function return codes for type FRESULT This goes away soon. But it is helpful right now to see
- // the different errors the read_data() and write_data() functions are seeing.
- //
- // 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 write_data(int &pos, const uint8_t *value, uint16_t size, uint16_t *crc) {
- FRESULT s;
- UINT bytes_written = 0;
-
- s = f_lseek(&eeprom_file, pos);
- if (s) {
- SERIAL_PROTOCOLPAIR(" write_data(", pos); // This extra chit-chat goes away soon. But it is helpful
- SERIAL_PROTOCOLPAIR(",", (int)value); // right now to see errors that are happening in the
- SERIAL_PROTOCOLPAIR(",", (int)size); // read_data() and write_data() functions
- SERIAL_PROTOCOL("...)\n");
- SERIAL_PROTOCOLLNPAIR(" f_lseek()=", (int)s);
- return s;
- }
-
- s = f_write(&eeprom_file, (void *)value, size, &bytes_written);
- if (s) {
- SERIAL_PROTOCOLPAIR(" write_data(", pos); // This extra chit-chat goes away soon. But it is helpful
- SERIAL_PROTOCOLPAIR(",", (int)value); // right now to see errors that are happening in the
- SERIAL_PROTOCOLPAIR(",", size); // read_data() and write_data() functions
- SERIAL_PROTOCOLLN("...)");
- SERIAL_PROTOCOLLNPAIR(" f_write()=", (int)s);
- SERIAL_PROTOCOLPAIR(" size=", size);
- SERIAL_PROTOCOLLNPAIR("\n bytes_written=", bytes_written);
- return s;
- }
- crc16(crc, value, size);
- pos = pos + size;
- return (bytes_written != size); // return true for any error
- }
-
- bool read_data(int &pos, uint8_t* value, uint16_t size, uint16_t *crc) {
- UINT bytes_read = 0;
- FRESULT s;
- s = f_lseek(&eeprom_file, pos);
- if ( s ) {
- SERIAL_PROTOCOLPAIR(" read_data(", pos); // This extra chit-chat goes away soon. But it is helpful
- SERIAL_PROTOCOLPAIR(",", (int)value); // right now to see errors that are happening in the
- SERIAL_PROTOCOLPAIR(",", size); // read_data() and write_data() functions
- SERIAL_PROTOCOLLN("...)");
- SERIAL_PROTOCOLLNPAIR(" f_lseek()=", (int)s);
- return true;
- }
- s = f_read(&eeprom_file, (void *)value, size, &bytes_read);
- if (s) {
- SERIAL_PROTOCOLPAIR(" read_data(", pos); // This extra chit-chat goes away soon. But it is helpful
- SERIAL_PROTOCOLPAIR(",", (int)value); // right now to see errors that are happening in the
- SERIAL_PROTOCOLPAIR(",", size); // read_data() and write_data() functions
- SERIAL_PROTOCOLLN("...)");
- SERIAL_PROTOCOLLNPAIR(" f_write()=", (int)s);
- SERIAL_PROTOCOLPAIR(" size=", size);
- SERIAL_PROTOCOLLNPAIR("\n bytes_read=", bytes_read);
- return true;
- }
- crc16(crc, value, size);
- pos = pos + size;
- return bytes_read != size; // return true for any error
- }
-
- } // PersistentStore
- } // HAL
-
- #endif // EEPROM_SETTINGS
- #endif // TARGET_LPC1768
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