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XferData

JumpeiKochi posted on 06 Jun 2012 6:19 PM PST
Senior Member
11 Forum Posts
Hi, I would like to know XferData(ref buf, ref len) at Visual C# method. When I transfer from Device to Host, Does "len" need to be the maximum packet size? For example, what kind of method should be used to receive 16 bytes of data from HOST? Although I tested the following contents, I was not successful. --- int Len = 16; byte[] Buf = new byte[Len]; BulkEndpoint.XferData(ref Buf, ref Len); --- Best Regards, Kochi


Re: XferData

dreitz posted on 07 Jun 2012 12:11 PM PST
Top Contributor
74 Forum Posts

I use BulkOutEndPt and BulkInEndPt instead of BulkEndPt.

 

int len = 3;

byte[] buf = new byte[len];

buf[0] = (byte)Commands.VR_SET_INTEGRATION_TIME;

buf[1] = (byte)(integrationTime & 0xff);

buf[2] = (byte)((integrationTime >> 8) & 0xff);

if (myDev.BulkOutEndPt.XferData(ref buf, ref len) == true)

{

     {

                 return Responses.PASSED;

           else

               return Responses.FAILED;

      }

            return Responses.INCOMMANDFAILED;

}

else

return Responses.OUTCOMMANDFAILED;

 

 

 

      else

          if (buf[0] == 0)

     len = 1;

     if (myDev.BulkInEndPt.XferData(ref buf, ref len) == true)

Re: XferData

aasi posted on 09 Jun 2012 11:28 PM PST
Cypress Employee
1073 Forum Posts

BulkEndPoint would point to the first Bulk Endpoint of your device. If it is a OUT endpoint was it configured to send 16 bytes?

If it is a IN endpoint then if it was configured properly then it should have received the data and XferData would have returned success. Please let us know your configuration.

Regards,

Anand



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