(OSX) Ecpprog and FTDI USB Serial driver not working together for ECP5 Versa board

[cbrinkerink]

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I hope this is the correct place to report the issue, I will gladly follow pointers to the appropriate place if it is not.

I am using MacOS X Mojave, 10.14.6.

The ECP5 Versa board, connected over USB, seems to not be recognised by ecpprog when I make use of the FTDI USB serial drivers instead of the native OSX FTDI driver:

$ ecpprog -S full-correlator.bin init.. Can't find iCE FTDI USB device (vendor_id 0x0403, device_id 0x6010 or 0x6014). ABORT. $ sudo kextunload /System/Library/Extensions/FTDIUSBSerialDriver.kext/ $ sudo kextload -b com.apple.driver.AppleUSBFTDI $ ecpprog -S full-correlator.bin init.. IDCODE: 0x02224086 does not match :( reset.. programming.. Bye. $

The IDCODE warning message notwithstanding, the bitfile is successfully loaded in the second instance.

While the FTDI USB serial driver is active, the connected board does show up normally in /dev:

crw-rw-rw- 1 root wheel 18, 23 Aug 24 19:30 /dev/cu.usbserial-FT1V75R1A crw-rw-rw- 1 root wheel 18, 25 Aug 24 19:30 /dev/cu.usbserial-FT1V75R1B

and also appears when I use the lsusb command:

$ lsusb 0403:6010 (bus 20, device 10) path: 1 047d:1020 (bus 20, device 7) path: 2.3 05ac:0221 (bus 20, device 6) path: 2.2 <snip> $

The top entry in the list above shows the ECP5 Versa board appearing through the expected vendor and product IDs for the FT2232H chip involved (0x0403 and 0x6010). I am therefore not sure why ecpprog does not recognise it.

Happy to provide more information if needed!

[gregdavill]

I'm not familiar enough with OSX's drivers to have any extra insight on this unfortunately.