RNode_Firmware/flash_cache.h

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/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifdef NRF52840_XXAA
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#ifndef FLASH_CACHE_H_
#define FLASH_CACHE_H_
#include <stdint.h>
#include <stdbool.h>
#define FLASH_CACHE_SIZE 4096 // must be a erasable page size
#define FLASH_CACHE_INVALID_ADDR 0xffffffff
typedef struct
{
bool (*erase) (uint32_t addr);
uint32_t (*program) (uint32_t dst, void const * src, uint32_t len);
uint32_t (*read) (void* dst, uint32_t src, uint32_t len);
bool (*verify) (uint32_t addr, void const * buf, uint32_t len);
uint32_t cache_addr;
uint8_t* cache_buf;
} flash_cache_t;
#ifdef __cplusplus
extern "C" {
#endif
int flash_cache_write (flash_cache_t* fc, uint32_t dst, void const *src, uint32_t count);
void flash_cache_flush (flash_cache_t* fc);
int flash_cache_read (flash_cache_t* fc, void* dst, uint32_t addr, uint32_t count);
#ifdef __cplusplus
}
#endif
#endif /* FLASH_CACHE_H_ */
#endif