RIOT-OS/RIOT
RIOT-OS/RIOT
1
0
Fork 0
mirror of https://github.com/RIOT-OS/RIOT.git synced 2024-12-29 04:50:03 +01:00
Code Releases Activity
355f2335d5
RIOT/cpu/samd21/periph/Kconfig.spi

2 lines
51 B
Plaintext
Raw Normal View History

cpu/sam0_common: SPI: don't perform DMA transfer for small buffers Setting up a DMA transfer can take longer than sending out a buffer byte by byte if the buffer is small. DMA only shows advantages for large buffers, using it for every transfer will cause a net slowdown. Since we did not come up with a good way to determine the treshold based on the SPI frequency, just use a fixed buffer for now so that DMA can be used without slowing things down overall.
2021-10-01 12:41:03 +02:00
source "$(RIOTCPU)/sam0_common/periph/Kconfig.spi"
Copy Permalink