123 lines
3.2 KiB
C++
123 lines
3.2 KiB
C++
/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#if defined(STM32GENERIC) && (defined(STM32F4) || defined(STM32F7))
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/**
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* Description: Functions for a Flash emulated EEPROM
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* Not platform dependent.
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*/
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// Include configs and pins to get all EEPROM flags
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#include "../../inc/MarlinConfig.h"
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#ifdef STM32F7
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#define HAS_EMULATED_EEPROM 1
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#else
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#define HAS_EMULATED_EEPROM NONE(I2C_EEPROM, SPI_EEPROM)
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#endif
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#if HAS_EMULATED_EEPROM && ENABLED(EEPROM_SETTINGS)
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// ------------------------
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// Includes
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// ------------------------
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#include "HAL.h"
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#include "eeprom_emul.h"
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// ------------------------
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// Local defines
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// ------------------------
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// FLASH_FLAG_PGSERR (Programming Sequence Error) was renamed to
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// FLASH_FLAG_ERSERR (Erasing Sequence Error) in STM32F4/7
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#ifdef STM32F7
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#define FLASH_FLAG_PGSERR FLASH_FLAG_ERSERR
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#else
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//#define FLASH_FLAG_PGSERR FLASH_FLAG_ERSERR
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#endif
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// ------------------------
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// Private Variables
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// ------------------------
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static bool eeprom_initialized = false;
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// ------------------------
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// Public functions
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// ------------------------
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void eeprom_init() {
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if (!eeprom_initialized) {
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HAL_FLASH_Unlock();
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
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/* EEPROM Init */
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if (EE_Initialize() != EE_OK)
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for (;;) HAL_Delay(1); // Spin forever until watchdog reset
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HAL_FLASH_Lock();
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eeprom_initialized = true;
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}
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}
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void eeprom_write_byte(uint8_t *pos, unsigned char value) {
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eeprom_init();
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HAL_FLASH_Unlock();
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
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uint16_t eeprom_address = unsigned(pos);
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if (EE_WriteVariable(eeprom_address, uint16_t(value)) != EE_OK)
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for (;;) HAL_Delay(1); // Spin forever until watchdog reset
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HAL_FLASH_Lock();
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}
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uint8_t eeprom_read_byte(uint8_t *pos) {
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eeprom_init();
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uint16_t data = 0xFF;
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uint16_t eeprom_address = unsigned(pos);
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(void)EE_ReadVariable(eeprom_address, &data); // Data unchanged on error
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return uint8_t(data);
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}
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void eeprom_read_block(void *__dst, const void *__src, size_t __n) {
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eeprom_init();
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uint16_t data = 0xFF;
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uint16_t eeprom_address = unsigned(__src);
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for (uint8_t c = 0; c < __n; c++) {
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EE_ReadVariable(eeprom_address+c, &data);
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*((uint8_t*)__dst + c) = data;
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}
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}
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void eeprom_update_block(const void *__src, void *__dst, size_t __n) {
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}
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#endif // EEPROM_SETTINGS
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#endif // STM32GENERIC && (STM32F4 || STM32F7)
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