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Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

USB Blaster driver conflict with other FTDI kit

Hi, I am using a USB blaster (Terasic) and on the same system I need to use two Asix Presto programmers that use the same FTDI device and (apparently) drivers. The Presto devices load up and...
tlavt's avatar
tlavt
Icon for New Contributor rankNew Contributor
6 years ago

Having the same issue with Windows 10 Enterprise 64 bit. As long as I have a FTDI based USB to serial converter plugged in and opened in a terminal, Quartus doesn't list the USB Blaster as a selectable hardware. If I plug out the USB to serial converter, the USB Blaster works fine.

  • Drivers for both devices installed fine without any exclamation mark or error message
  • USB to serial chip is FT2232C/D/H Dual UART/FIFO IC; Driver is ftser2k.sys, V2.12.28.0
  • Terasic blaster has FT245BL chip; Driver is usbblstr.sys, V2.12.00.2 as contained in Quartus 16.1 and Quartus 18.1

I see this thread was opened 11 years ago, any chance that there will ever be a solution?

Regards

SparkyNZ's avatar
SparkyNZ
Icon for Contributor rankContributor
5 years ago

I now have the same problem. I have been using Quartus 14 without problem for quite some time. This morning I upgraded to 20.x and now I have the same problem.

I have to shut Putty down in order to download to my FPGA. What a pain.

Looks like I'm going to need a second PC to run Putty..

  • avib's avatar
    avib
    Icon for Occasional Contributor rankOccasional Contributor
    5 years ago

    I'm also having the same problem of not being able to use the USB to serial together with the USB Blaster.

    There is a way to workaround Programming by disconnecting the USB to serial and re-attaching it after the programming was completed, but there is no way to use SignalTap since I need the serial port connected during the debugging...

    I've tried many Quartus driver versions, and the latest USB to serial driver, but it still doesn't work.