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AN75779 commit buffer error 71 | Cypress Semiconductor

AN75779 commit buffer error 71

Summary: 1 Reply, Latest post by AW on 06 Jan 2014 11:55 AM PST
Verified Answers: 0
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Rags's picture
32 posts

 I am using the cypress example AN75779 with some modifications by using a 8 bit instead of 32 bit . But whether the mode of transmission be BULK or ISOCH using 3 transaction , i get an error while committing the producer buffer. The error code is 71 meaning CY_U3P_ERROR_INVALID_SEQUENCE .

When i checked the api document for CyU3PDmaMultiChannelCommitBuffer i found this,

It should be called only when the consumer socket is in the suspended state. In all other cases this will return


Now i tried getting the status of the dma channel when this error occurs using CyU3PDmaMultiChannelGetStatus, to this i get i get CY_U3P_DMA_ACTIVE.

How to solve this issue, is there anyway to suspend the consumer socket ???

AW's picture
15 posts

 Did you ever find a solution here?  I'm having the exact same problem.

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