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problem of finishdatatransfer in streamer
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problem of finishdatatransfer in streamer

dekui posted on 23 May 2012 10:51 PM PST
Member
10 Forum Posts

 Hi,all!

I use streamer to read data from USB board(3014).As the source data is increase packet by packet I find that I miss some packet by detecting the header of the packets.but I examine all the packets transmited in USB Analyzer, It shows all the packets has reached the PC host correctly. The length of packet is 16KB and I choose 2 packets per xfer.

After debuging the streamer project I find that the reason of missing packets is that the finishdatatransfer() fail. how can I get the error code so as to analize the reason. And to my surprise sometimes I can read data correctly and sometimes miss some data.And if I choose larger num of packets per xfer I will miss data more frequently.

I am confused by this probelm for a long time. could you help me to fix it or give me some suggestions?

Thanks and Best Regards

dekui

 

 

Re: problem of finishdatatransfer in streamer

dekui posted on 23 May 2012 11:20 PM PST
Member
10 Forum Posts

 sorry, the function is finishdataxfer().

Re: problem of finishdatatransfer in streamer

AssemblyRequired posted on 23 May 2012 05:08 AM PST
Top Contributor
37 Forum Posts

I wonder if this could be the issue:

http://www.cypress.com/?app=forum&id=167&rID=62980 



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