8 years ago
To the question about the speed of SPI transfers and the code that
What code in the Raspi code base handles the SPI interface and what is
known about it ?
How can it be sped up to get some real-time data transfers,
or at least a reasonable flow of data from an external A/D converter ?
Does the SPI interface code use the Broadcom BCM2835 DMA interface for
block transfers ?
Looking at this doc:
I do not see how to setup the DMA to transfer data to/from the SPI
( this is because I am new to the BCM2835 )
shows that the SPI interface is one byte at a line with lots of
overheard. ( non-DMA )