2025-12-07 21:39:26 +01:00
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/*
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* eeprom.h
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*
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* Created on: Dec 7, 2025
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* Author: user
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*/
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#ifndef __EEPROM_H
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#define __EEPROM_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "stm32f1xx_hal.h"
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/*
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* Simple EEPROM emulation for STM32F103C8T6 (medium density).
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* - Uses 2 Flash pages (1 kB each) at the end of Flash.
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* - Stores variables as 16-bit values identified by 16-bit "virtual addresses".
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*
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* You must define the list of virtual addresses in eeprom.c: EE_VirtAddrs[].
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*/
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typedef enum
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{
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2025-12-08 13:48:52 +01:00
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EE_STATUS_OK = 0,
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EE_STATUS_ERROR,
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EE_STATUS_NOT_FOUND,
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EE_STATUS_NO_SPACE
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2025-12-07 21:39:26 +01:00
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} EE_Status;
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2025-12-08 13:48:52 +01:00
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/* For compatibility with ST style uint16_t return codes */
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#define EE_OK ((uint16_t)EE_STATUS_OK)
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#define EE_ERROR ((uint16_t)EE_STATUS_ERROR)
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#define EE_NOT_FOUND ((uint16_t)EE_STATUS_NOT_FOUND)
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#define EE_NO_SPACE ((uint16_t)EE_STATUS_NO_SPACE)
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2025-12-07 21:39:26 +01:00
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/* Flash parameters for STM32F103C8T6 */
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#define EE_FLASH_BASE_ADDR 0x08000000U
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#define EE_PAGE_SIZE 0x400U /* 1 kB pages */
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/*
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* Here we assume a 64 kB Flash device (STM32F103C8T6):
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* Flash range: 0x0800 0000 - 0x0800 FFFF
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* Pages: 0..63 (64 pages)
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* We use the last 2 pages for EEPROM:
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* - Page 62: 0x0800 F800
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* - Page 63: 0x0800 FC00
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*/
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#define EE_PAGE0_BASE (EE_FLASH_BASE_ADDR + (62U * EE_PAGE_SIZE))
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#define EE_PAGE1_BASE (EE_FLASH_BASE_ADDR + (63U * EE_PAGE_SIZE))
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/* Page status markers (stored in the first halfword of each page) */
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#define EE_PAGE_STATUS_ERASED 0xFFFFU
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#define EE_PAGE_STATUS_VALID 0xAAAAU
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#define EE_PAGE_STATUS_RECEIVE 0x5555U
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/*
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* Configure how many virtual variables you have.
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* Example: bytes, words, and array elements mapped to 16-bit variables.
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* Set EE_NUM_VIRTUAL_ADDR and define EE_VirtAddrs[] in eeprom.c.
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*/
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/* 32 virtual variables, sequential addresses */
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#define EE_NUM_VIRTUAL_ADDR 32U
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#define EEW_ADDR(i) (uint16_t)(0x0001 + (i)) // i = 0..31
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2026-04-15 23:12:13 +02:00
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#define M1PWMAP 0 //m1pwmap
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#define M1PWMCH 1 //m1pwmch
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#define M2PWMAP 2 //m2pwmap
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#define M2PWMCH 3 //m2pwmch
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#define M3PWMAP 4 //m3pwmap
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#define M3PWMCH 5 //m3pwmch
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#define M4PWMAP 6 //m4pwmap
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#define M4PWMCH 7 //m4pwmch
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#define M1RAMPSTART 8 //m1rampstart
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#define M2RAMPSTART 9 //m2rampstart
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#define M3RAMPSTART 10 //m3rampstart
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#define M4RAMPSTART 11 //m4rampstart
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#define T1AP 12 //t1ap
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#define T2AP 13 //t2ap
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#define T3AP 14 //t3ap
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#define T4AP 15 //t4ap
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#define TWAP 16 //twap
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#define T1CH 17 //t1ch
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#define T2CH 18 //t2ch
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#define T3CH 19 //t3ch
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2026-04-16 20:28:50 +02:00
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#define T4CH 20 //t4ch
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#define TWCH 21 //twch
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2026-04-15 23:12:13 +02:00
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#define TRAMP 31 //tramp
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2025-12-07 21:39:26 +01:00
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/* Virtual address table (defined in eeprom.c, can be customized) */
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extern const uint16_t EE_VirtAddrs[EE_NUM_VIRTUAL_ADDR];
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2025-12-08 13:48:52 +01:00
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/* Public API – now using uint16_t like ST examples */
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uint16_t EE_Init(void);
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uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t *Data);
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uint16_t EE_WriteVariable(uint16_t VirtAddress, uint16_t Data);
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2026-04-15 23:12:13 +02:00
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void loadEE(void);
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2025-12-08 13:48:52 +01:00
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/* Pseudo-array accessor EEW[idx] */
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static inline uint16_t EEW_Read(uint8_t idx, uint16_t *value)
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2025-12-07 21:39:26 +01:00
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{
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return EE_ReadVariable(EEW_ADDR(idx), value);
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}
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2025-12-08 13:48:52 +01:00
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static inline uint16_t EEW_Write(uint8_t idx, uint16_t value)
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2025-12-07 21:39:26 +01:00
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{
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return EE_WriteVariable(EEW_ADDR(idx), value);
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}
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2025-12-08 13:48:52 +01:00
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2025-12-07 21:39:26 +01:00
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#ifdef __cplusplus
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}
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#endif
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#endif /* __EEPROM_H */
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