I have two of the older HiFive1 A01 – I got very side-tracked and finally started to try to play with it.
I cannot get them to apper via via lsusb and sudo ls /dev/ttyUSB* – yes I own TWO of these.
What are my options if both of these aren’t detected? Both light up and are being powered by USB.
That’s weird. Maybe try a different USB cable. I’ve had bad ones. Also I know it’s sacrilege in Linux land (and I’m often unjustifiably proud of my own 200 day or 400 day uptimes) but sometimes I have managed to get my USB ports into weird states after playing with this kind of hardware (including AVR Arduinos) and needed a reboot to fix it.
Interesting – it turns out the 2 USB cables and mini USB hub all don’t work with the HiFive. I switched to other USB cables and now they are detected. Odd! Never seen this before. Thank you!
I did need to reboot in order for the USB to be detected as ttyUSB as well.