Sorry for posting it again. It seems editing the post doesn't update it and
there were some significant updates.
I am running sertest on ttyS2 at 115200. I am able to transmit from my
verdex-pro but unable to receive.
Though I am able to program my robostix using uisp (using a suitable
jumper). The loopback test using sertest also works.
Even when I touch my Rx pin with my finger or any metallic object I start
seeing gibberish being displayed on the screen. Nothing is connected to
either Rx or Tx pins. At other times I see nothing, even on touching he RX
pin. The behaviour keeps fluctuating.
I am being unable to isolate the fault.
>From what I understand the resistor on the console UART (ttyS0) has nothing
to do with this.
Any help/ ideas would be greatly appreciated.
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