From: James Linder <jam@ti...> - 2012-01-04 01:54:53
On 04/01/2012, at 12:14 AM, gumstix-users-request@... wrote:
> I intend to connect a MIB520 USB gateway to an Overo COM via a Tobi
> expansion board. The purpose is to run a Crossbow MicaZ mote using the
> Overo COM.
> My question is: does it work if I connect the MIB520 USB gateway to the
> expansion board? The MIB520 uses an FTDI FT2232C USB-to-serial chip
> (MIB520 datasheet can be achieved here:
> y/7-datasheets.html?download=144%3Amib520cb). In my understanding, the
> expansion board also uses an FTDI USB/serial converter chip. Therefore,
> is it correct to connect the MIB520 USB gateway to the expansion board
> in order to establish the connection between the MicaZ mote and the
> Overo COM?
Multiple FTDI chips will not affect the board. They would (if on the same client) make /dev/ttyUSB0 /dev/ttyUSB1 etc
on the host each needs its own Tx and Rx data pins.
Using the MIB520 it would seem:
MonitorPC ---- usb ---- Gunstix (via FTDI on tobi)
MIB520 ------- usb ---- Gumstix
Then gumstix /dev will have entries for
the system control
a tty port (/dev/ttyUSB0) [however that works]
There is no confusion (at least WRT what tty device is the console vs the app hardware)
The biggest issue is what devices the MIB520 creates on the gumstix
if they are /dev/ttyUSBnn then all is well
if they are another supported device all is well again
if they are some device instantiated by a custom program then you are in trouble
The data sheet is somewhat (very) thin WTR real detail as to what and how
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