This adds the best HD=4 CRC32 polynomial. The discovery
is the result of research by Philip Koopman of Carnegie
Mellon University, and is well documented at
https://users.ece.cmu.edu/~koopman/crc/.
The user is given the option of trading 1024B of RAM to
improve the execution speed. The unit tests are parameterized
with this KConfig option.
Signed-off-by: JP Hutchins <jp@intercreate.io>
This commit introduces the `crc8_rohc` function to the CRC library,
implementing the CRC-8/ROHC (RObust Header Compression) variant.
This algorithm is widely used in networking protocols, which is commonly
found in modem subsystems.
Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>
Added CRC4 and CRC4_TI to the supported crc_types[] array.
On some SoCs, like ESP32-S3, missing values can cause hardfaults
due to attempts to access the zero address.
Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>
Declarations for `getopt()` should be in `<unistd.h>`
according to the spec. The extended versions `getopt_long()`
and `getopt_long_only()` are declared in `<getopt.h>`.
Signed-off-by: Chris Friedt <cfriedt@meta.com>
This seems to have caused build failures in spite of CI being
green in PR 52653.
This reverts commit fc92eb1b37.
Signed-off-by: Chris Friedt <cfriedt@meta.com>
Declarations for `getopt()` should be in `<unistd.h>`
according to the spec. The extended versions `getopt_long()`
and `getopt_long_only()` are declared in `<getopt.h>`.
Signed-off-by: Chris Friedt <cfriedt@meta.com>
There are several Zephyr shell commands that are used for
transferring data over a possibly unreliable connection such as a
UART into either memory or flash. For example, `flash load` and
`devmem load`.
Make the CRC functions available so that they can be used to
verify the integrity of data transferred over possibly
unreliable connections.
Signed-off-by: Chris Friedt <cfriedt@meta.com>
JP Hutchins
Pisit Sawangvonganan
Adrien Ricciardi
Anas Nashif
Chris Friedt