You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
96 lines
3.3 KiB
96 lines
3.3 KiB
/**
|
|
* Marlin 3D Printer Firmware
|
|
*
|
|
* Copyright (c) 2020 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(FLASH_EEPROM_EMULATION)
|
|
|
|
#include "../shared/eeprom_api.h"
|
|
|
|
#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)
|
|
|
|
size_t PersistentStore::capacity() {
|
|
const uint8_t psz = NVMCTRL->SEESTAT.bit.PSZ,
|
|
sblk = NVMCTRL->SEESTAT.bit.SBLK;
|
|
|
|
return (!psz && !sblk) ? 0
|
|
: (psz <= 2) ? (0x200 << psz)
|
|
: (sblk == 1 || psz == 3) ? 4096
|
|
: (sblk == 2 || psz == 4) ? 8192
|
|
: (sblk <= 4 || psz == 5) ? 16384
|
|
: (sblk >= 9 && psz == 7) ? 65536
|
|
: 32768;
|
|
}
|
|
|
|
bool PersistentStore::access_start() {
|
|
NVMCTRL->SEECFG.reg = NVMCTRL_SEECFG_WMODE_BUFFERED; // Buffered mode and segment reallocation active
|
|
if (NVMCTRL->SEESTAT.bit.RLOCK)
|
|
NVMCTRL_CMD(NVMCTRL_CTRLB_CMD_USEE); // Unlock E2P data write access
|
|
return true;
|
|
}
|
|
|
|
bool PersistentStore::access_finish() {
|
|
NVMCTRL_FLUSH();
|
|
if (!NVMCTRL->SEESTAT.bit.LOCK)
|
|
NVMCTRL_CMD(NVMCTRL_CTRLB_CMD_LSEE); // Lock E2P data write access
|
|
return true;
|
|
}
|
|
|
|
bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
|
|
while (size--) {
|
|
const uint8_t v = *value;
|
|
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);
|
|
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--) {
|
|
SYNC(NVMCTRL->SEESTAT.bit.BUSY);
|
|
uint8_t c = ((volatile uint8_t *)SEEPROM_ADDR)[pos];
|
|
if (writing) *value = c;
|
|
crc16(crc, &c, 1);
|
|
pos++;
|
|
value++;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
#endif // FLASH_EEPROM_EMULATION
|
|
#endif // __SAMD51__
|
|
|