76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/**
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* @file flash_param.h
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* @brief Flash parameter storage module for TCP2UART
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*
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* Stores configuration parameters in STM32F103 internal Flash.
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* Uses the last page of Flash (1KB) for parameter storage.
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*/
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#ifndef __FLASH_PARAM_H__
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#define __FLASH_PARAM_H__
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Flash configuration for STM32F103R8 (64KB Flash) */
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#define FLASH_PARAM_PAGE_SIZE 1024 /* 1KB per page for STM32F103 */
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#define FLASH_PARAM_START_ADDR 0x0800FC00 /* Last 1KB of 64KB Flash */
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#define FLASH_PARAM_END_ADDR 0x08010000 /* End of Flash */
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/* For STM32F103RC (256KB), use: 0x0803FC00 */
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/* For STM32F103RB (128KB), use: 0x0801FC00 */
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/**
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* @brief Initialize Flash parameter storage
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* @return 0 on success, negative on error
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*/
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int flash_param_init(void);
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/**
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* @brief Read parameters from Flash
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* @param data Output buffer
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* @param len Length to read
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* @return 0 on success, negative on error
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*/
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int flash_param_read(void *data, uint32_t len);
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/**
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* @brief Write parameters to Flash
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* @param data Data to write
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* @param len Length to write
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* @return 0 on success, negative on error
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*
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* Note: This function will erase the Flash page before writing.
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*/
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int flash_param_write(const void *data, uint32_t len);
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/**
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* @brief Erase parameter storage area
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* @return 0 on success, negative on error
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*/
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int flash_param_erase(void);
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/**
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* @brief Calculate CRC32 for data
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* @param data Data buffer
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* @param len Data length
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* @return CRC32 value
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*/
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uint32_t flash_param_crc32(const void *data, uint32_t len);
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/**
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* @brief Verify parameter storage integrity
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* @return 0 if valid, negative if invalid or corrupted
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*/
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int flash_param_verify(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __FLASH_PARAM_H__ */
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