kopia lustrzana https://github.com/bristol-seds/pico-tracker
62 wiersze
1.9 KiB
C
62 wiersze
1.9 KiB
C
/*
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* Provides functions for using the external flash memory
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* Copyright (C) 2015 Richard Meadows <richardeoin>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef MEMORY_H
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#define MEMORY_H
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/**
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* Memory layout:
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*
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* 256-byte pages
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* 4-kbyte sectors (erase) - 16 pages
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* 64-kbyte blocks - 16 sectors
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*/
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#define TOTAL_PAGES 0x800
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#define TOTAL_SECTORS 0x80
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#define TOTAL_BLOCKS 0x8
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#define MEMORY_MASK 0x7FFFF
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#define PAGE_MASK 0x7FF00
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#define SECTOR_MASK 0x7F000
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#define MEMORY_SIZE 0x80000
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#define PAGE_SIZE 0x00100
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#define SECTOR_SIZE 0x01000
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#define BLOCK_SIZE 0x10000
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/**
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* Pages assigned to backlog. Currently 128 records
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*/
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#define BACKLOG_START_PAGE 0x00
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#define BACKLOG_END_PAGE 0x7f
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void mem_chip_erase(void);
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void mem_read_memory(uint32_t address, uint8_t* buffer, uint32_t length);
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void mem_write_page(uint32_t address, uint8_t* buffer, uint16_t length);
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void mem_erase_sector(uint32_t address);
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void init_memory(void);
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#endif
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