Marlin_Firmware/Marlin/src/HAL/HAL_STM32F4/EmulatedEeprom.cpp

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2018-04-17 17:33:29 -05:00
/**
* Marlin 3D Printer Firmware
* Copyright (C) 2016 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/>.
*
*/
#ifdef STM32F4
/**
* Description: functions for I2C connected external EEPROM.
* Not platform dependent.
*/
#include "../../inc/MarlinConfig.h"
#if ENABLED(EEPROM_SETTINGS) && DISABLED(I2C_EEPROM) && DISABLED(SPI_EEPROM)
// --------------------------------------------------------------------------
// Includes
// --------------------------------------------------------------------------
#include "HAL.h"
#include "EEPROM_Emul/eeprom_emul.h"
// --------------------------------------------------------------------------
// Externals
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
// Local defines
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
// Types
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
// Variables
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
// Public Variables
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
// Private Variables
// --------------------------------------------------------------------------
static bool eeprom_initialised = false;
// --------------------------------------------------------------------------
// Function prototypes
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
// Private functions
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
// Public functions
// --------------------------------------------------------------------------
// FLASH_FLAG_PGSERR (Programming Sequence Error) was renamed to
// FLASH_FLAG_ERSERR (Erasing Sequence Error) in STM32F4
// #define FLASH_FLAG_PGSERR FLASH_FLAG_ERSERR
// --------------------------------------------------------------------------
// EEPROM
// --------------------------------------------------------------------------
void eeprom_init() {
if (!eeprom_initialised) {
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_Initialise() != EE_OK)
for (;;) HAL_Delay(1); // Spin forever until watchdog reset
HAL_FLASH_Lock();
eeprom_initialised = true;
}
}
void eeprom_write_byte(unsigned char *pos, unsigned char value) {
uint16_t eeprom_address = (unsigned) pos;
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);
if (EE_WriteVariable(eeprom_address, (uint16_t) value) != EE_OK)
for (;;) HAL_Delay(1); // Spin forever until watchdog reset
HAL_FLASH_Lock();
}
unsigned char eeprom_read_byte(unsigned char *pos) {
uint16_t data = 0xFF;
uint16_t eeprom_address = (unsigned)pos;
eeprom_init();
if (EE_ReadVariable(eeprom_address, &data) != EE_OK) {
return (unsigned char)data;
}
return (unsigned char)data;
}
void eeprom_read_block(void *__dst, const void *__src, size_t __n) {
uint16_t data = 0xFF;
uint16_t eeprom_address = (unsigned) __src;
eeprom_init();
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 // ENABLED(EEPROM_SETTINGS) && DISABLED(I2C_EEPROM) && DISABLED(SPI_EEPROM)
#endif // STM32F4