59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
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/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Ha Thach for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* 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, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef FLASH_CACHE_H_
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#define FLASH_CACHE_H_
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#include <stdint.h>
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#include <stdbool.h>
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#define FLASH_CACHE_SIZE 4096 // must be a erasable page size
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#define FLASH_CACHE_INVALID_ADDR 0xffffffff
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typedef struct
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{
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bool (*erase) (uint32_t addr);
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uint32_t (*program) (uint32_t dst, void const * src, uint32_t len);
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uint32_t (*read) (void* dst, uint32_t src, uint32_t len);
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bool (*verify) (uint32_t addr, void const * buf, uint32_t len);
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uint32_t cache_addr;
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uint8_t* cache_buf;
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} flash_cache_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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int flash_cache_write (flash_cache_t* fc, uint32_t dst, void const *src, uint32_t count);
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void flash_cache_flush (flash_cache_t* fc);
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int flash_cache_read (flash_cache_t* fc, void* dst, uint32_t addr, uint32_t count);
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#ifdef __cplusplus
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}
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#endif
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#endif /* FLASH_CACHE_H_ */
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