Re: [Fx2lib-devel] Arming bulk end points early

[Dennis M. <de...@ub...>]

Eric Winsor wrote:
> I have an application where I would like to ship a 512 byte bulk in 
> endpoint whenever the host asks for a packet.  The host will not know 
> what size the packet is so I am planning on the host asking for 512 
> bytes.  I just want to give the host whatever has accumulated in the 
> EP4FIFOBUF when the host requests the in packet of 512 bytes on EP4.
>   
I think you'll have to tell the fx2 via a vendor command or something 
that you'll be wanting the packet.  The fx2 can then arm the endpoint, 
and the PC can then read the data.  There is otherwise no notice given 
across the USB bus to whatever microprocessor that your program wants to 
read data.  The program will just timeout on the PC side if the endpoint 
isn't armed.

Is that what you were wanting to get at?

-Dennis