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how to clear the uncommitted content in one endpoint fifo
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RSKV

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how to clear the uncommitted content in one endpoint fifo

achy posted on 11 Dec 2012 7:23 AM PST
Top Contributor
31 Forum Posts

Hello,all.

i got a trouble that how to clear the uncommitted content in one endpoint fifo.

for example
i miswrite some data(unknown how much but less than 512) in the salve fifo of endpoint 2.the packet size of endpoint 2 is 512B
then i want to clear the data.
i tried to use "FIFORESET=0x02" or "FIFOREST=0x82",which means reset the endpoint 2.
but it failed. that method can't clear the data. because next time i read the endpoint 2, the data miswritted in are still there.

so what can i do to clear them

Thank you
Regards




Re: how to clear the uncommitted content in one endpoint fifo

RSKV posted on 11 Dec 2012 07:40 AM PST
Cypress Employee
655 Forum Posts

Hi achy,

Please use

OUTPKTEND = 0x82;

SYNCDELAY;

Repeat the same thing as many times as your buffer depth. Have 2 sets of above mentioned statements if the EP2 is double buffer.

FIFORESET just reset the FIFO pointers...

Thanks,

sai krishna.



Re: how to clear the uncommitted content in one endpoint fifo

achy posted on 11 Dec 2012 07:56 AM PST
Top Contributor
31 Forum Posts

Thank you

I will try the INPKTEND tomorrow






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