blue_st_sdk.firmware_upgrade.utils package¶
Submodules¶
blue_st_sdk.firmware_upgrade.utils.firmware_file module¶
firmware_file
The firmware_file module is responsible for handling a firmware file.
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class
blue_st_sdk.firmware_upgrade.utils.firmware_file.
FirmwareFile
(filename)[source]¶ -
__init__
(filename)[source]¶ Constructor.
- Args:
- filename (str): File name of the firmware file.
- Raises:
OSError
if the file is not found or is inaccessible.
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close
()[source]¶ Close the firmware file.
- Raises:
OSError
if the file is not found or is inaccessible.
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get_crc_32
()[source]¶ Getting the 32 bit CRC of the firmware file.
The file size must be multiple of 32 bits.
- Raises:
ValueError
if the firmware file can not be read properly.- Returns:
- int: The CRC of the firmware file.
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get_type
()[source]¶ Get the firmware type.
- Returns:
blue_st_sdk.firmware_upgrade.utils.firmware_file.FirmwareType
: The firmware type.
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blue_st_sdk.firmware_upgrade.utils.stm32crc32 module¶
firmware_file
The firmware_file module is responsible for handling a firmware file.
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class
blue_st_sdk.firmware_upgrade.utils.stm32crc32.
STM32Crc32
[source]¶ Bases:
object
Computes the CRC32 by using the same algorithm implemented by STM32 chips.
The algorithm works on unsigned integer 32 numbers, hence the buffer must have a length multiple of 4.
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CRC_TABLE
= [0, 79764919, 159529838, 222504665, 319059676, 398814059, 445009330, 507990021, 638119352, 583659535, 797628118, 726387553, 890018660, 835552979, 1015980042, 944750013]¶ Nibble lookup table for 0x04C11DB7 polynomial.
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INITIAL_VALUE
= 4294967295¶ Initial value of the CRC.
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update
(data)[source]¶ Update the value of the CRC.
Size of data in bytes must be multiple of 4.
- Args:
- data (bytearray): Data to compute the CRC value of.
- Raises:
ValueError
if the length of the data is not multiple of 4.
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