Hi
I setup the transfer using the auto-out mode. Everything the PC sends to the device is transferred using GPIF transfer.
Unfortunately, I need to skip the first packet, transmit 300 packets, skip 301 packet, transmit another 300 packets and so on.
In the ISR_Ep2inout I check the packet content and try to ignore it before the setting the GPIF transfer.
The code:
EP2FIFOCFG = 0x01; // manual mode
SYNCDELAY;
OUTPKTEND = 0X82; // skip packet
SYNCDELAY;
EP2FIFOCFG = 0x11; // back to auto out mode, disable PKTEND zero length send, word ops
SYNCDELAY;
does not work. The packet is not skipped and GPIF transfer picks it up.
If I use another code that resets FIFO (from TRM):
FIFORESET = 0x80; // activate NAK-ALL to avoid race conditions
SYNCDELAY;
EP2FIFOCFG = 0x01; //switching to manual mode
SYNCDELAY;
FIFORESET = 0x02; // Reset FIFO 2
SYNCDELAY;
OUTPKTEND = 0X82; // skip the packet
SYNCDELAY;
EP2FIFOCFG = 0x11; //switching to auto mode
SYNCDELAY;
FIFORESET = 0x00; //Release NAKALL
SYNCDELAY;
then I sometimes skip more than one packet Is it any way to skip exactly one packet from EP2 buffer and preserve others intact?
