i tried change pid in ftdi chip (r232r) through ft_prog. working after found windows 7 automaticaly reinstal drivers usb device, not ftdi device. want change pid default (6001). problem can not see device in ft_prog app because has different pid number. tried mprog same result. tried reinstal windows ftdi drivers manualy, still can not see ftd device in ft_prog. actualy not why possible change pid, if cut of communication ft_prod.
ok, foud solution. preston. make copy of default windows ftdi drivers, open ftdibus.inf change pid number default 6001 6005 , make manual instalation of driver. working , can connect ftdi chip standard ftdi tool ft_prog. can create own drivers combination of vid , pid. more information in technical note ftdi tn_104.
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