I bought the Pololu USB AVR Programmer v2.1 and I have problems to get the TTL-level serial port running on windows 7 professional 64-bit. The programming port works well, so it is possible to programm an atmega8 with AVR Studio or bascom. The microcontroller sends with USART “Hello” back to the computer and despite the drivers are okay I am not able to read it with the bascom terminal or another terminal (hterm for example). With ubuntu 16.04 the TTL section works well, so I assume the USB driver or other windows related software might have a problem. With ubuntu also switching RTS and DTR on and of works, but not with windows. I double-checked the driver, I checked the input to the programmer with an oscilloscop, also the green LED is blinking in the moment the “Hello” is send.
Do you have an hints what I could do to get windows communicating with the programmer TTL port?
Many thanks in advance