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55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
#ifndef _EEPROM_H_
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#define _EEPROM_H_
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#include <stdbool.h>
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#include <stdint.h>
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#define EEPROM_WRITE_PAGE_SZ 256 //max write size & alignment
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#define EEPROM_ERZ_SECTOR_SZ 4096 //erase size and alignment
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//device has 256 sectors, so eepromErase() cannot erase thw whole device...i can live with that
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__bit eepromInit(void);
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void eepromOtpModeEnter(void);
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void eepromOtpModeExit(void);
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#pragma callee_saves eepromRead
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void eepromRead(uint32_t addr, void __xdata *dst, uint16_t len) __reentrant;
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#pragma callee_saves eepromWrite
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bool eepromWrite(uint32_t addr, const void __xdata *src, uint16_t len) __reentrant;
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#pragma callee_saves eepromErase
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bool eepromErase(uint32_t addr, uint16_t numSectors) __reentrant;
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void eepromDeepPowerDown(void);
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#pragma callee_saves eepromGetSize
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uint32_t eepromGetSize(void);
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//this is for firmware update use
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void eepromReadStart(uint32_t addr) __reentrant;
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//structures
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#define EEPROM_IMG_INPROGRESS (0x7fffffffUL)
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#define EEPROM_IMG_VALID (0x494d4722UL)
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#include "board.h"
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#define EEPROM_PIECE_SZ (88)
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struct EepromImageHeader { //each image space is 0x17000 bytes, we have space for ten of them
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uint64_t version;
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uint32_t validMarker;
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uint32_t size;
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uint32_t rfu[8]; //zero-filled for now
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uint8_t piecesMissing[EEPROM_PROGRESS_BYTES]; //each bit represents a EEPROM_PIECE_SZ-byte piece
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uint32_t id;
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//image data here
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//we pre-erase so progress can be calculated by finding the first non-0xff byte
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};
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#endif
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