Deium,
When I hook up Edison to PC, I use both J16 and J3 with two USB cables to PC. So, before the MX20DX256 tes,
this two-usb-cable-to-PC was working just fine. After, the test ( test used J21 with power adapter to wall socket power),
the same two-usb cable is showing abnormal behavior => Edison sees FT232R (ttyMFD2) working, PC sees COM port
is working , PuTTY connects to (virtual) COM port, however no chars..
I think there is some setup ( I checked different Baudrates, parities, bit combinations -- none work) issue inside the FT232R
device itself.
So one of my questions is : Is there a loop back test that I can run on Edison to check if FT232R is really Tx-Rx ing ?