In my previous post "How to: Setup UART console for IOT-2020", I used non-standard cable.

* So I bought a new USB-to-UART cable: FTDI C232HD-DDHSP-0

http://www.ftdichip.com/Support/Documents/DataSheets/Cables/DS_C232HD_UART_CABLE.pdf

* But again, I can see the booting message, but can NOT make any input!!!

* Here is my connections to X14 of IOT-2020:

x-14:     CTS_N      TxD        RxD       n.c.      RTS_N     GND

x-14:        6             5               4            3            2              1

cable:   Green      Yellow   Orange   Red    Brown       Black

cable:   RTS_N     RxD        TxD         VCC    CTS_N     GND

Anything wrong with my connections?

Thanks!

Jerry

Hi Jerry,

is there a reason why the RxD from the cable is connected to the TxD pin and not the RxD Pin?

Best regards,
Chris

Please connect only RX, TX and GND.

Other pins are for handshake and it is not necessary with this  baudrates.

Chris:

* since I can see the booting message, I think RxD-TxD connection is correct.

Ocean:

* I have try different ways of connection, including three pins only (RxD, TxD, GND).

* But still can NOT make any input.

Bergmanu:

* When I inserted USB cable to PC, it says "ready to use", no warning at all.

* Probably my IOT-2020 is buggy? and need to get a new board?

Thank you all!

Jerry