Re: [PATCH] USB: add USB test and measurement class driver - round 2

Oliver Neukum
2008-08-29T11:31:57Z

Am Freitag 29 August 2008 11:13:04 schrieb stefan_kopp@agilent.com:
> For large amounts of data (e.g. when downloading a waveform), USBTMC instruments often use a "binblock", a concept taken from the good old GPIB (IEEE488) standard, where the data is preceeded by a header and the header indicates how many bytes are following. So you first read and interpret the header and then you know exactly how many bytes to expect in the body of the message.

Not really ideal. We should tell user space how much really was sent.

Regards
Oliver