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Altera_Forum
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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...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

I just upgraded to Quartus 16.1 and now I have this problem.

Without the FTDI cable plugged in USB-Blaster is at port USB-0, and I can program my device through JTAG.

With the FTDI cable plugged in the USB-Blaster changes to USB-1, and I can still program my device through JTAG.

With the FTDI cable plugged in as USB-1 and PuTTY open, then I cannot program my device through JTAG - the Quartus programmer reports "No Hardware". Closing the PuTTY window allows the programmer to work again.