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Visual DSP++ and ADSP21065L on a virtual COM port?

Started by Toby Newman November 11, 2003
Hi,
I'm trying to get Visual DSP++ to identify my SHARC board using a
belkin USB -> RS232 adapter. According to the manual, the serial
adapter creates a "virtual com port" that not all apps are capable of
using.

Has anyone here had any success running VDSP++ on a virtual COM port? 

Other notes:
The board is identified ok if I use the mobo's legacy port.
If I use the belkin adapter, I can see "outgoing" data light flashing
occasionally while VDSP++ looks for the evaluation board. If I reset
the evaluation board, I also see the "incoming" data light flash once.
This implies to me that the data connection is made, but VDSP++ is
unable to use the virtual COM port.

Thanks for any experience you can bring,
Toby

Toby Newman wrote:
> > Hi, > I'm trying to get Visual DSP++ to identify my SHARC board using a > belkin USB -> RS232 adapter. According to the manual, the serial > adapter creates a "virtual com port" that not all apps are capable of > using. > > Has anyone here had any success running VDSP++ on a virtual COM port? >
I had trouble making work ADSP-218x EZ-ICE with VDSP++ using USB to RS232 adapter. Initially the ICE was not recognized by the software. The adapter I am using is based on pretty standard PL2303 chip. I had to apply some magic manipulations (reset the PC, reset the EZ-ICE, load VDSP, exit VDSP, load VDSP again). After that it was working just fine. My guess is the effect has something with the latencies of the USB to serial convertor. Vladimir Vassilevsky DSP and Mixed Signal Design Consultant http://www.abvolt.com