123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116 |
- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * 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/>.
- *
- */
-
- #if defined(STM32GENERIC) && (defined(STM32F4) || defined(STM32F7))
-
- /**
- * Description: Functions for a Flash emulated EEPROM
- * Not platform dependent.
- */
-
- // Include configs and pins to get all EEPROM flags
- #include "../../inc/MarlinConfig.h"
-
- #if ENABLED(FLASH_EEPROM_EMULATION)
-
- // ------------------------
- // Includes
- // ------------------------
-
- #include "HAL.h"
- #include "eeprom_emul.h"
-
- // ------------------------
- // Local defines
- // ------------------------
-
- // FLASH_FLAG_PGSERR (Programming Sequence Error) was renamed to
- // FLASH_FLAG_ERSERR (Erasing Sequence Error) in STM32F4/7
-
- #ifdef STM32F7
- #define FLASH_FLAG_PGSERR FLASH_FLAG_ERSERR
- #else
- //#define FLASH_FLAG_PGSERR FLASH_FLAG_ERSERR
- #endif
-
- // ------------------------
- // Private Variables
- // ------------------------
-
- static bool eeprom_initialized = false;
-
- // ------------------------
- // Public functions
- // ------------------------
-
- void eeprom_init() {
- if (!eeprom_initialized) {
- HAL_FLASH_Unlock();
-
- __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
-
- /* EEPROM Init */
- if (EE_Initialize() != EE_OK)
- for (;;) HAL_Delay(1); // Spin forever until watchdog reset
-
- HAL_FLASH_Lock();
- eeprom_initialized = true;
- }
- }
-
- void eeprom_write_byte(uint8_t *pos, unsigned char value) {
- eeprom_init();
-
- HAL_FLASH_Unlock();
- __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
-
- uint16_t eeprom_address = unsigned(pos);
- if (EE_WriteVariable(eeprom_address, uint16_t(value)) != EE_OK)
- for (;;) HAL_Delay(1); // Spin forever until watchdog reset
-
- HAL_FLASH_Lock();
- }
-
- uint8_t eeprom_read_byte(uint8_t *pos) {
- eeprom_init();
-
- uint16_t data = 0xFF;
- uint16_t eeprom_address = unsigned(pos);
- (void)EE_ReadVariable(eeprom_address, &data); // Data unchanged on error
-
- return uint8_t(data);
- }
-
- void eeprom_read_block(void *__dst, const void *__src, size_t __n) {
- eeprom_init();
-
- uint16_t data = 0xFF;
- uint16_t eeprom_address = unsigned(__src);
- for (uint8_t c = 0; c < __n; c++) {
- EE_ReadVariable(eeprom_address+c, &data);
- *((uint8_t*)__dst + c) = data;
- }
- }
-
- void eeprom_update_block(const void *__src, void *__dst, size_t __n) {
-
- }
-
- #endif // FLASH_EEPROM_EMULATION
- #endif // STM32GENERIC && (STM32F4 || STM32F7)
|