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File I/O for DSK and RTDX

Started by Linkens, Andy ●August 29, 2003
Does anyone have experience of processing speech test vectors on the C6416
DSK using RTDX?
Using the usual fread and fwrite functions to do File I/O is extremely slow
and the help in Code Composer Studio is not very clear for RTDX although I
am fairly certain this is the way to go.
There must be a way to speed up the data transmission between the host and
the target - if anyone has found this and tried it successfully then I would
be interested,
thanks
Andy Linkens


Reply by Mike Dunn ●August 30, 20032003-08-30


"Linkens, Andy" <a...@nuera.com> wrote:
Does anyone have experience of processing speech test vectors on the C6416
DSK using RTDX?
Using the usual fread and fwrite functions to do File I/O is extremely slow
and the help in Code Composer Studio is not very clear for RTDX although I
am fairly certain this is the way to go.
There must be a way to speed up the data transmission between the host and
the target - if anyone has found this and tried it successfully then I would
be interested,
thanks
Andy Linkens_____________________________________
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Andy,

The std io functions are very slow and you want to stay away from them totally if you need any performance at all.  They are only useful [in my opinion] for development and debug. Standard JTAG RTDX is probably one to two orders of magnitude faster.  If you are fortunate enough to have an XDS560, HSRTDX is even faster.

I have used RTDX for information logging but I did not measure the data rate - but it blew the doors off of std io.

mikedunn