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/*
* This software is experimental and a work in progress.
* Under no circumstances should these files be used in relation to any critical system(s).
* Use of these files is at your own risk.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* This files are free to use from https://github.com/rogerclarkmelbourne/Arduino_STM32 and
* https://github.com/leaflabs/libmaple
*
* Modifications for QMK and STM32F303 by Yiancar
*/
// This file must be modified if the MCU is not defined below.
// This library also assumes that the pages are not used by the firmware.
#ifndef __EEPROM_H
#define __EEPROM_H
#include "ch.h"
#include "hal.h"
#include "flash_stm32.h"
// HACK ALERT. This definition may not match your processor
// To Do. Work out correct value for EEPROM_PAGE_SIZE on the STM32F103CT6 etc
#if defined(EEPROM_EMU_STM32F303xC)
#define MCU_STM32F303CC
#elif defined(EEPROM_EMU_STM32F103xB)
#define MCU_STM32F103RB
#else
#error "not implemented."
#endif
#ifndef EEPROM_PAGE_SIZE
#if defined (MCU_STM32F103RB)
#define EEPROM_PAGE_SIZE (uint16_t)0x400 /* Page size = 1KByte */
#elif defined (MCU_STM32F103ZE) || defined (MCU_STM32F103RE) || defined (MCU_STM32F103RD) || defined (MCU_STM32F303CC)
#define EEPROM_PAGE_SIZE (uint16_t)0x800 /* Page size = 2KByte */
#else
#error "No MCU type specified. Add something like -DMCU_STM32F103RB to your compiler arguments (probably in a Makefile)."
#endif
#endif
#ifndef EEPROM_START_ADDRESS
#if defined (MCU_STM32F103RB)
#define EEPROM_START_ADDRESS ((uint32_t)(0x8000000 + 128 * 1024 - 2 * EEPROM_PAGE_SIZE))
#elif defined (MCU_STM32F103ZE) || defined (MCU_STM32F103RE)
#define EEPROM_START_ADDRESS ((uint32_t)(0x8000000 + 512 * 1024 - 2 * EEPROM_PAGE_SIZE))
#elif defined (MCU_STM32F103RD)
#define EEPROM_START_ADDRESS ((uint32_t)(0x8000000 + 384 * 1024 - 2 * EEPROM_PAGE_SIZE))
#elif defined (MCU_STM32F303CC)
#define EEPROM_START_ADDRESS ((uint32_t)(0x8000000 + 256 * 1024 - 2 * EEPROM_PAGE_SIZE))
#else
#error "No MCU type specified. Add something like -DMCU_STM32F103RB to your compiler arguments (probably in a Makefile)."
#endif
#endif
/* Pages 0 and 1 base and end addresses */
#define EEPROM_PAGE0_BASE ((uint32_t)(EEPROM_START_ADDRESS + 0x000))
#define EEPROM_PAGE1_BASE ((uint32_t)(EEPROM_START_ADDRESS + EEPROM_PAGE_SIZE))
/* Page status definitions */
#define EEPROM_ERASED ((uint16_t)0xFFFF) /* PAGE is empty */
#define EEPROM_RECEIVE_DATA ((uint16_t)0xEEEE) /* PAGE is marked to receive data */
#define EEPROM_VALID_PAGE ((uint16_t)0x0000) /* PAGE containing valid data */
/* Page full define */
enum uint16_t
{
EEPROM_OK = ((uint16_t)0x0000),
EEPROM_OUT_SIZE = ((uint16_t)0x0081),
EEPROM_BAD_ADDRESS = ((uint16_t)0x0082),
EEPROM_BAD_FLASH = ((uint16_t)0x0083),
EEPROM_NOT_INIT = ((uint16_t)0x0084),
EEPROM_SAME_VALUE = ((uint16_t)0x0085),
EEPROM_NO_VALID_PAGE = ((uint16_t)0x00AB)
};
#define EEPROM_DEFAULT_DATA 0xFFFF
uint16_t EEPROM_init(void);
uint16_t EEPROM_format(void);
uint16_t EEPROM_erases(uint16_t *);
uint16_t EEPROM_read (uint16_t address, uint16_t *data);
uint16_t EEPROM_write(uint16_t address, uint16_t data);
uint16_t EEPROM_update(uint16_t address, uint16_t data);
uint16_t EEPROM_count(uint16_t *);
uint16_t EEPROM_maxcount(void);
#endif /* __EEPROM_H */
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