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Leader and Trailer Packet | Cypress Semiconductor

Leader and Trailer Packet

Summary: 1 Reply, Latest post by Gayathri on 12 Aug 2013 09:26 AM PDT
Verified Answers: 0
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gd_net's picture
20 posts


I use the slavefifosync example to stream data from the GPIF to a Bulk_IN endpoint.

The streamed data has to look like follows:

leader-packet ; GPIF-data-packets ; trailer-packet

leader-packet and trailer-packet must use one transfer each.

leader-packet and trailer-packet containing only status information.

So the header/footer mechanism of the dma-channel will not work for me.

GPIF-data can be multiblte transfers.


How can I add the leader-packet/trailer-packet to a   CY_U3P_DMA_TYPE_MANUAL channel ?

How can i achieve such a streaming layout?

Best regards



gaya's picture
Cypress Employee
578 posts



You can use the CyU3PDmaChannelSetupSendBuffer for the same. You may refer MSC example from FX3 SDK to understand the usage of the same.




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