Re: MSP430 JTAG over USB for Linux?

Grant Edwards wrote:
On 2007-09-28, Michael N. Moran <mnmoran@xxxxxxxxxxxxx> wrote:
I've looked at the gdbproxy, but I'm having a hard time
understanding exactly what it uses to talk to the USB
JTAG device.

A USB JTAG or spy-bi-wire adapter shows up as a serial port
(e.g. /dev/ttyUSB0). It looks like they use a standard TI
USB<->serial chip which is interfaced to an MSP430F16x which
then talks to the target device (AFAICT).

I gleaned this same information from the mspgcc/gdbproxy
stuff on source forge ... by going through the docs and
then downloading and looking at the driver code for FC4
and FC4.

Thanks for the reenforcement :-)

If the off-brand USB dongle will work with the TI .dll files,
then it's protocol-compatible and will also work with gdbproxy.

Quoting from the description of the Olimex MSP430-JTAG-ISO,
JTAG-TINY and JTAG-RF:

MSP430.dll makes it compatible with all existing software
which works with TI-USB-FET (emulates TI-USB-FET)

That leads me to believe that it's not compatible with the TI
.dll's and therefore not compatible with gdbproxy under Linux.
I might be wrong...

They also say (in their FAQ) that users of mspgcc have
"reported" success using the device ... without mentioning
Linux :-/

Steve Underwood is the
maintainer of msp430-gdbproxy, so pay particular attention to
his posts. Oleg Verych has been working on the Linux driver
for the TI USB-serial chip, so also pay attention to whatever
he says also.

Good information.

Thank you, Grant, for your time and detail.

--
Michael N. Moran (h) 770 516 7918
5009 Old Field Ct. (c) 678 521 5460
Kennesaw, GA, USA 30144 http://mnmoran.org

"So often times it happens, that we live our lives in chains
and we never even know we have the key."
"Already Gone" by Jack Tempchin (recorded by The Eagles)

The Beatles were wrong: 1 & 1 & 1 is 1
.

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