0 Replies Latest reply on Nov 28, 2017 4:53 PM by alexey.dymchenko_2885936

    Cy7c68013a intermittent read errors from the bulk end-point

    alexey.dymchenko_2885936

      Hi,

       

      I am trouble-shooting intermittent read errors from the custom design using 68013a at 480Mbps USB transferring data to Windows PC-based application using 3.4.7 Cypress driver and .net library. The problem occurs rarely - once per 1..5*10e7 packets control transaction ctrlEP.XferData() returns false almost immediately or after few (0-5) milliseconds. Surely I have tried obvious remedies such as using better (or shorter) USB cable, different PC and different USB2.0 port but the problem is persistent.

      - What is the re-transmission policy of the control transactions in the CyUSB driver / .net library  (how many retries are allowed before declaring the failure)?

      - Is any way to change the re-transmission policy?

      - Any other ideas/suggestions are greatly appreciated

       

      Best regards,

      Alex