Flash¶
This module contains class definitions to read and write the MCU internal flash
The FlashFileStream class¶
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class
FlashFileStream
(start_address, size)¶ This class creates an in memory buffer of size size bytes that is filled with the content of the internal flash starting from address start_address
Subsequent operations of read and write are performed on the memory buffer. To actually write the memory buffer to the internal flash a call to flush() is needed.
The memory buffer can also be accessed via bracket notation. The following is valid syntax:
f = flash.FlashFileStream(0x0800000,512) f[0] = 1 x = f[10:20]
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write
(buf)¶ Writes the content of buf at the current file position, checking for overflow.
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read_int
()¶ Read 4 bytes at the current position and return the corresponding 32 bit integer.
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flush
()¶ Write the memory buffer to flash. It can be VERY slow because the sector(s) of flash interested by the write operation must be erased first.
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close
()¶ Free memory buffer