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/* mbed Microcontroller Library
* Copyright (c) 2017 ARM Limited
*
* 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.
*/
#ifndef MBED_FLASHIAP_H
#define MBED_FLASHIAP_H
#ifdef DEVICE_FLASH
#include "flash_api.h"
#include "platform/SingletonPtr.h"
#include "platform/PlatformMutex.h"
namespace mbed {
/** \addtogroup drivers */
/** @{*/
/** Flash IAP driver. It invokes flash HAL functions.
*
* Note Synchronization level: Thread safe
*/
class FlashIAP {
public:
FlashIAP();
~FlashIAP();
/** Initialize a flash IAP device
*
* Should be called once per lifetime of the object.
* @return 0 on success or a negative error code on failure
*/
int init();
/** Deinitialize a flash IAP device
*
* @return 0 on success or a negative error code on failure
*/
int deinit();
/** Read data from a flash device.
*
* This method invokes memcpy - reads number of bytes from the address
*
* @param buffer Buffer to write to
* @param addr Flash address to begin reading from
* @param size Size to read in bytes
* @return 0 on success, negative error code on failure
*/
int read(void *buffer, uint32_t addr, uint32_t size);
/** Program data to pages
*
* The sectors must have been erased prior to being programmed
*
* @param buffer Buffer of data to be written
* @param addr Address of a page to begin writing to, must be a multiple of program and sector sizes
* @param size Size to write in bytes, must be a multiple of program and sector sizes
* @return 0 on success, negative error code on failure
*/
int program(const void *buffer, uint32_t addr, uint32_t size);
/** Erase sectors
*
* The state of an erased sector is undefined until it has been programmed
*
* @param addr Address of a sector to begin erasing, must be a multiple of the sector size
* @param size Size to erase in bytes, must be a multiple of the sector size
* @return 0 on success, negative error code on failure
*/
int erase(uint32_t addr, uint32_t size);
/** Get the sector size at the defined address
*
* Sector size might differ at address ranges.
* An example <0-0x1000, sector size=1024; 0x10000-0x20000, size=2048>
*
* @param addr Address of or inside the sector to query
* @return Size of a sector in bytes or MBED_FLASH_INVALID_SIZE if not mapped
*/
uint32_t get_sector_size(uint32_t addr) const;
/** Get the flash start address
*
* @return Flash start address
*/
uint32_t get_flash_start() const;
/** Get the flash size
*
* @return Flash size
*/
uint32_t get_flash_size() const;
/** Get the program page size
*
* @return Size of a program page in bytes
*/
uint32_t get_page_size() const;
private:
/** Check if address and size are aligned to a sector
*
* @param addr Address of block to check for alignment
* @param size Size of block to check for alignment
* @return true if the block is sector aligned, false otherwise
*/
bool is_aligned_to_sector(uint32_t addr, uint32_t size);
flash_t _flash;
static SingletonPtr<PlatformMutex> _mutex;
};
} /* namespace mbed */
#endif /* DEVICE_FLASH */
#endif /* MBED_FLASHIAP_H */
/** @}*/
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