In SlaveFIFOSync DEMO, PKTEND# used to commit the last short packet or ZLP.

If PKTEND signal assert a long time(many pclk cycles), the FX3 will commit many zero length packets to the PC ?

When I use FX2, I use an ex_interrupt to force a short packet transfer, 

void ISR_INT0(void) interrupt INT0_VECT

{

   INPKTEND = 0x02;

   SYNCDELAY;

   EX0 = 1;

}

In FX3, how can I do something like this, use the ex_interrupt instead of the PKTEND#?

You can configure a simple GPIO as interrupt or have the gpif engine trigger a software interrupt to get this done.

Regards,

Anand

 hi, aasi, Thanks for your reply, I know I can configure a simple GPIO as interrupt and I have done this before, what I didn't know is which function I have to use  to transfer a short packet in the API library or which register I have to change. Thanks for your help.