How To Communicate with FTDI I/O Device

[murugan.venkatesh]

Hi Everybody,

I have connected a ftdi device(LK202-24-USB), and installed the
driver,
and when i try to use the ftdi api FT_ListDevices(&numDevs, NULL,
FT_LIST_NUMBER_ONLY) it always gives the numDevs as Zero. can anybody
help on this?
Thanks in advance.

[Ben Voigt]

<mu***************@gmail.comwrote in message
news:11**********************@j27g2000cwj.googlegr oups.com...

Hi Everybody,

I have connected a ftdi device(LK202-24-USB), and installed the
driver,

Is that a USB <-UART converter? Which chip is onboard, 232R or 2232C or
some other?

and when i try to use the ftdi api FT_ListDevices(&numDevs, NULL,
FT_LIST_NUMBER_ONLY) it always gives the numDevs as Zero. can anybody
help on this?
Thanks in advance.

If it's a UART chip, you probably want to use the standard Windows file
handling functions as if it was a normal comm port, using the VCOMM driver
from ftdi. They make a program MProg which you can use to program a model
string into the firmware so you can distinguish between different devices.

FT_CreateDeviceInfoList also works rather well. I've not used the
FT_ListDevices function, I suspect because it didn't provide as much detail.