On Mon, 4 Jun 2018 18:22:38 +0000, Paul Ourada wrote:
I have a situation where I am using two FT4232H devices for serial
communication via ftdi_sio, and a third device which I wish to use in
bit bang mode to set up some control lines in the UARTS which
are downstream from the first two FT4232Hs. These UARTS can be
configured as RS232/422/485, etc. Of course, I do not wish to disturb
the first two FT4232H devices wrt to their connection to ftdi_sio.
However, I must discover all these devices to decide which one I should
use with libftdi. But first, I check how things come up before
attempting anything:
Have you considered changing the Vendor/Product ID, description, and/or
serial number fields stored in the EEPROM for the FT4232H which you
will be using for BitBang mode? I use those capabilities with the
ftdi_usb_open_desc_index() method to always and easily select the
desired device irrespective of any other FTDI devices on the USB
bus. Easy, foolproof.
--
libftdi - see http://www.intra2net.com/en/developer/libftdi for details.
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