hi 

if i use wordwide =1 in slavefifo mode,  what am i do for read in windwos application program?

i usually use like below  in wordwide=0,

if (USBDevice->BulkInEndPt)

USBDevice->BulkInEndPt->XferData(buf, length); 

buf have [512] array and length is 512.

but, if i use wordwide =1, what am i  setting value for buf array count and length value ? 

 You must set the length in bytes.

 What you mean bytes? 

Could you please let me know more detail?

it looks like:

UCHAR buf[512];

 length = sizeof(buf); 

USBDevice->BulkInEndPt->XferData(buf, length);

 

 You mean that i shoud use same value length and buf[]. Right?

Then if i use 16bitmode , how to out data from xferdata()?

If original data is 0x1618, buf arrary data have like this ? buf[0]=0x16 buf[1]=0x18?

Or buf[0]= 0x1618 ?

 in my opinion the 16 mode is only important in the development of hardware and firmware (program inside chip). not important in the development of software.

one more example:

union{

 UCHAR buf[512];

short int bufshort[256];
};

bufshort[0] = 0x1234;// you can write short int directly to buf

.....

length = sizeof(buf);

USBDevice->BulkInEndPt->XferData(buf, length);

I'm not sure. 

Please let me know my question. 

Which one ? buf[0]= 0x1234  or buf[0]=0x12 and  buf[1]=0x34 ?

 Oh i see thanks a lot