4e7b5769bd
Calculate crc32 4 bits at a time. The return value of the calculation is identical to the previous 1 bit at a time implementation. Results in a speed up of a factor 3 at the cost of using 64 bytes of flash for a crc table. Calculating crc32 of 128kB of flash on a 120MHz Kinetis MKE16F512 Cortex-M4 takes 99ms using the 1 bit at a time implementation, and 30ms using the 4 bits at a time implementation. The crc32 routine is used by subsys/canbus/canopen/canopen_program.c to calculate crc of flash images. Signed-off-by: Klaus H. Sorensen <khso@vestas.com> |
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cmsis_rtos_v1 | ||
cmsis_rtos_v2 | ||
fnmatch | ||
gui | ||
libc | ||
open-amp | ||
os | ||
posix | ||
CMakeLists.txt | ||
Kconfig |