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Marlin-Artillery-M600/Marlin/src/HAL/HAL_SAMD51/persistent_store_eeprom.cpp
2019-07-28 14:48:29 -05:00

129 lines
4.1 KiB
C++

/**
* Marlin 3D Printer Firmware
*
* Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
* SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
*
* 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 __SAMD51__
#include "../../inc/MarlinConfig.h"
#if ENABLED(EEPROM_SETTINGS)
#include "../shared/persistent_store_api.h"
#if NONE(SPI_EEPROM, I2C_EEPROM)
#define NVMCTRL_CMD(c) do{ \
SYNC(!NVMCTRL->STATUS.bit.READY); \
NVMCTRL->INTFLAG.bit.DONE = true; \
NVMCTRL->CTRLB.reg = c | NVMCTRL_CTRLB_CMDEX_KEY; \
SYNC(NVMCTRL->INTFLAG.bit.DONE); \
}while(0)
#define NVMCTRL_FLUSH() do{ \
if (NVMCTRL->SEESTAT.bit.LOAD) \
NVMCTRL_CMD(NVMCTRL_CTRLB_CMD_SEEFLUSH); \
}while(0)
#endif
bool PersistentStore::access_start() {
#if NONE(SPI_EEPROM, I2C_EEPROM)
NVMCTRL->SEECFG.reg = NVMCTRL_SEECFG_WMODE_BUFFERED; // Buffered mode and segment reallocation active
#endif
return true;
}
bool PersistentStore::access_finish() {
#if NONE(SPI_EEPROM, I2C_EEPROM)
NVMCTRL_FLUSH();
if (!NVMCTRL->SEESTAT.bit.LOCK)
NVMCTRL_CMD(NVMCTRL_CTRLB_CMD_LSEE); // Lock E2P data write access
#endif
return true;
}
bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
#if NONE(SPI_EEPROM, I2C_EEPROM)
if (NVMCTRL->SEESTAT.bit.RLOCK)
NVMCTRL_CMD(NVMCTRL_CTRLB_CMD_USEE); // Unlock E2P data write access
#endif
while (size--) {
const uint8_t v = *value;
#if ANY(SPI_EEPROM, I2C_EEPROM)
uint8_t * const p = (uint8_t * const)pos;
if (v != eeprom_read_byte(p)) {
eeprom_write_byte(p, v);
delay(2);
if (eeprom_read_byte(p) != v) {
SERIAL_ECHO_MSG(MSG_ERR_EEPROM_WRITE);
return true;
}
}
#else
SYNC(NVMCTRL->SEESTAT.bit.BUSY);
if (NVMCTRL->INTFLAG.bit.SEESFULL)
NVMCTRL_FLUSH(); // Next write will trigger a sector reallocation. I need to flush 'pagebuffer'
((volatile uint8_t *)SEEPROM_ADDR)[pos] = v;
SYNC(!NVMCTRL->INTFLAG.bit.SEEWRC);
#endif
crc16(crc, &v, 1);
pos++;
value++;
}
return false;
}
bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
while (size--) {
uint8_t c;
#if ANY(SPI_EEPROM, I2C_EEPROM)
c = eeprom_read_byte((uint8_t*)pos);
#else
SYNC(NVMCTRL->SEESTAT.bit.BUSY);
c = ((volatile uint8_t *)SEEPROM_ADDR)[pos];
#endif
if (writing) *value = c;
crc16(crc, &c, 1);
pos++;
value++;
}
return false;
}
size_t PersistentStore::capacity() {
#if ANY(SPI_EEPROM, I2C_EEPROM)
return E2END + 1;
#else
const uint8_t psz = NVMCTRL->SEESTAT.bit.PSZ,
sblk = NVMCTRL->SEESTAT.bit.SBLK;
if (!psz && !sblk) return 0;
else if (psz <= 2) return (0x200 << psz);
else if (sblk == 1 || psz == 3) return 4096;
else if (sblk == 2 || psz == 4) return 8192;
else if (sblk <= 4 || psz == 5) return 16384;
else if (sblk >= 9 && psz == 7) return 65536;
else return 32768;
#endif
}
#endif // EEPROM_SETTINGS
#endif // __SAMD51__