On 01/11/2014 15:05, Alan Stern wrote:
On Sat, 1 Nov 2014, Breton M. Saunders wrote:
This is required behavior, for example, during the data phase of a
bulk-only mass-storage transfer. The specification states that under
certain circumstances, the device _must_ send a zero-length packet on
On Mon, 3 Nov 2014, Breton M. Saunders wrote:
Hi Alan,
Thanks again for your help.
I think my understanding of the bulk transfer protocol was
incorrectly confused with my previous work on control transfers. It
looks like there is no concept of transfer vs transaction in bulk
On 31/10/14 14:23, Alan Stern wrote:
On Fri, 31 Oct 2014, Peter Stuge wrote:
Breton M. Saunders wrote:
Are zero length transfers from a device to the PC on a bulk endpoint
sensible?
I don't see how they could be.
If the device has no data to send it responds with a NAK handshake.
If the
On Sat, 1 Nov 2014, Breton M. Saunders wrote:
This is required behavior, for example, during the data phase of a
bulk-only mass-storage transfer. The specification states that under
certain circumstances, the device _must_ send a zero-length packet on
its bulk-IN endpoint.
Hi Alan -
On Fri, 31 Oct 2014, Peter Stuge wrote:
Breton M. Saunders wrote:
Are zero length transfers from a device to the PC on a bulk endpoint
sensible?
I don't see how they could be.
If the device has no data to send it responds with a NAK handshake.
If the device has data to send it
Hi All,
I want to ask what the correct USB behavior should be for a gadget
attempting to perform a zero byte transfer (note transfer, not
transaction) on a bulk-in endpoint should be:
Background:
* Basically I've got a hacked up kernel; hardware is TI omap dm3730
(an overo gumstix
Breton M. Saunders wrote:
Are zero length transfers from a device to the PC on a bulk endpoint
sensible?
I don't see how they could be.
If the device has no data to send it responds with a NAK handshake.
If the device has data to send it responds with the data.
//Peter
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