Flash¶
The hardware independent interface to flash memory that is used by applications.
Description¶
The API offers basic initialization, read, write, erase, sector erase, and other operations.
API¶
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int
hal_flash_ioctl(uint8_t flash_id, uint32_t cmd, void *args)¶
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int
hal_flash_read(uint8_t flash_id, uint32_t address, void *dst, uint32_t num_bytes)¶
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int
hal_flash_write(uint8_t flash_id, uint32_t address, const void *src, uint32_t num_bytes)¶
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int
hal_flash_erase_sector(uint8_t flash_id, uint32_t sector_address)¶
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int
hal_flash_erase(uint8_t flash_id, uint32_t address, uint32_t num_bytes)¶
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int
hal_flash_isempty(uint8_t flash_id, uint32_t address, void *dst, uint32_t num_bytes)¶
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int
hal_flash_isempty_no_buf(uint8_t id, uint32_t address, uint32_t num_bytes)¶ Determines if the specified region of flash is completely unwritten.
This function is like
hal_flash_isempty(), except the caller does not need to provide a buffer. Instead, a buffer of size MYNEWT_VAL(HAL_FLASH_VERIFY_BUF_SZ) is allocated on the stack.- Return
1 if the specified region is empty; 0 if the specified region is not empty; -1 on error.
- Parameters
id: The ID of the flash hardware to inspect.address: The starting address of the procedure.num_bytes: The number of bytes of flash to check.
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uint8_t
hal_flash_align(uint8_t flash_id)¶
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uint8_t
hal_flash_erased_val(uint8_t flash_id)¶
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int
hal_flash_init(void)¶