[Discuss-gnuradio] fusb_nblock and fusb_block_size

[Thomas Schmid]

Hi all,

What do the parameters fusb_nblock and fusb_block_size exactly do in
how data is transmitted over the USB to the USRP? I assume that
fusb_nblock indicates how many blocks we have in each USB packet, and
fusb_block_size indicates how big one block is.

My question is, if there is less data available on the USRP (i.e. not
fusb_nblock*fusb_block_size), does it still get sent over the USRP to
the computer?

How is the smallest amount of data necessary in the USRP defined such
that a packet is sent over the USB to the computer? Is it
fusb_block_size?

Thank you very much,

Thomas