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CyU3PDmaChannelWaitForCompletion() does not return | Cypress Semiconductor

CyU3PDmaChannelWaitForCompletion() does not return

Summary: 1 Reply, Latest post by RSKV on 07 Nov 2012 11:30 PM PST
Verified Answers: 0
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RobK's picture
81 posts

Dear all,

in my FX3-project I setup besides some further DMA-channels a manual DMA out-channel between CPU and USB-socket. For this channel I use external buffers to feed the DMA-engine using the API's CyU3PDmaChannelSetupSendBuffer() and CyU3PDmaChannelWaitForCompletion(). So far it worked without any problems but now a use-case occurred where the API CyU3PDmaChannelWaitForCompletion() doesn't return if I set it's parameter 'waitOption' to infinite. Setting this parameter to a value != infinite the API returns with error-code CY_U3P_ERROR_TIMEOUT. In the use-case the API is called 7 times without error but the 8th call fails.

What can cause this API to behave like this? I don't know where I have to search the root-cause in my code since it worked fine in the past...





rskv's picture
Cypress Employee
1134 posts

Hi Robert,

Could you please create a tech support case so that one of our engineer will look into your application code and suggest you on what is going wrong in your project.


sai krishna.

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