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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 http://engsta.com/stm32-flash-memory-eeprom-emulator/ by
- * Artur F.
- *
- * Modifications for QMK and STM32F303 by Yiancar
- *
- * This library assumes 8-bit data locations. To add a new MCU, please provide the flash
- * page size and the total flash size in Kb. The number of available pages must be a multiple
- * of 2. Only half of the pages account for the total EEPROM size.
- * This library also assumes that the pages are not used by the firmware.
- */
- #pragma once
- #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
- #elif defined(EEPROM_EMU_STM32F072xB)
- # define MCU_STM32F072CB
- #elif defined(EEPROM_EMU_STM32F042x6)
- # define MCU_STM32F042K6
- #else
- # error "not implemented."
- #endif
- #ifndef EEPROM_PAGE_SIZE
- # if defined(MCU_STM32F103RB) || defined(MCU_STM32F042K6)
- # define FEE_PAGE_SIZE (uint16_t)0x400 // Page size = 1KByte
- # define FEE_DENSITY_PAGES 2 // How many pages are used
- # elif defined(MCU_STM32F103ZE) || defined(MCU_STM32F103RE) || defined(MCU_STM32F103RD) || defined(MCU_STM32F303CC) || defined(MCU_STM32F072CB)
- # define FEE_PAGE_SIZE (uint16_t)0x800 // Page size = 2KByte
- # define FEE_DENSITY_PAGES 4 // How many pages are used
- # 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) || defined(MCU_STM32F072CB)
- # define FEE_MCU_FLASH_SIZE 128 // Size in Kb
- # elif defined(MCU_STM32F042K6)
- # define FEE_MCU_FLASH_SIZE 32 // Size in Kb
- # elif defined(MCU_STM32F103ZE) || defined(MCU_STM32F103RE)
- # define FEE_MCU_FLASH_SIZE 512 // Size in Kb
- # elif defined(MCU_STM32F103RD)
- # define FEE_MCU_FLASH_SIZE 384 // Size in Kb
- # elif defined(MCU_STM32F303CC)
- # define FEE_MCU_FLASH_SIZE 256 // Size in Kb
- # else
- # error "No MCU type specified. Add something like -DMCU_STM32F103RB to your compiler arguments (probably in a Makefile)."
- # endif
- #endif
- // DONT CHANGE
- // Choose location for the first EEPROM Page address on the top of flash
- #define FEE_PAGE_BASE_ADDRESS ((uint32_t)(0x8000000 + FEE_MCU_FLASH_SIZE * 1024 - FEE_DENSITY_PAGES * FEE_PAGE_SIZE))
- #define FEE_DENSITY_BYTES ((FEE_PAGE_SIZE / 2) * FEE_DENSITY_PAGES - 1)
- #define FEE_LAST_PAGE_ADDRESS (FEE_PAGE_BASE_ADDRESS + (FEE_PAGE_SIZE * FEE_DENSITY_PAGES))
- #define FEE_EMPTY_WORD ((uint16_t)0xFFFF)
- #define FEE_ADDR_OFFSET(Address) (Address * 2) // 1Byte per Word will be saved to preserve Flash
- // Use this function to initialize the functionality
- uint16_t EEPROM_Init(void);
- void EEPROM_Erase(void);
- uint16_t EEPROM_WriteDataByte(uint16_t Address, uint8_t DataByte);
- uint8_t EEPROM_ReadDataByte(uint16_t Address);
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