I want to send and receive short commands from ATtiny85 using its USB port without using any external chips (like FT232 etc.). I have tried DigiCDC, but it is not working with Win8.1 and Win10 and, as far as I understand, there is no fix available. I have found suggestions to use HID or V-USB as alternatives, but they look to be rather difficult compared to a simple virtual serial port - you have to have advanced knowledge in that field and there are no easy examples that I could adapt. Is there any simple working example that shows how to send one letter and receive it back (implementation of Echo) over an USB?
kfa:
I want to send and receive short commands from ATtiny85 using its USB port
The Attiny85 does not have a USB port.
...R
Yeah, you are right. I meant to say its virtual/emulated USB port.
kfa:
Yeah, you are right. I meant to say its virtual/emulated USB port.
AFAIK it does not have one of those either.
An Attiny85 has a max clock speed of 20MHz and USB is about 20 times that speed.
...R
There is a low speed USB, which is 1.5 Mbit/s.
kfa:
There is a low speed USB, which is 1.5 Mbit/s.
So I see. I was not aware of that - sorry.
I am lazy so I just use a USB-TTL cable 
...R