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Can i use custom length in slave fifo mode?
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Can i use custom length in slave fifo mode?

dv2 posted on 11 May 2013 7:47 AM PST
Top Contributor
113 Forum Posts

Hi 

 

I want to use like following

 

LONG length = 2592// custom length

if (USBDevice->BulkInEndPt) {
USBDevice->BulkInEndPt->XferData(buf, length); 
 
But this is happen to error in PC application.
 
 
Can i use custom length in slave fifo mode?



Re: Can i use custom length in slave fifo mode?

aasi posted on 12 May 2013 12:17 PM PST
Cypress Employee
1090 Forum Posts
What is the error code that you're getting? One thing that comes to mind is if you request 2592 bytes and all that the device is sending are 512 byte packets then there is one possible error scenarios might run into. After five 512 byte transfers the device sends a 512 byte packet (or any packet size greater than 32 bytes) will lead to buffer overflow causing error.

Re: Can i use custom length in slave fifo mode?

dv2 posted on 12 May 2013 03:22 PM PST
Top Contributor
113 Forum Posts

 Yes you right 

I fix them. 

Thanks






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