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ASC1 TX and RX swapped ? (EHS6T USB) | Telit Cinterion IoT Developer Community

October 18, 2017 - 4:56am, 1716 views

Hi, im experiencing something odd with the EHS6T (USB).

When connecting the arduino uno TX (pin 1 on the arduino) to the EHS6T RXD1 (pin 4) there is no communication from the arduino to the EHS6T. But if I connect the arduino TX pin to TXD1 (pin 3) then communication works flawlessly.

Other connections performed are:

Arduino  GND     ----  EHS6T GND (pin 2)

EHS6T VCCref (pin 1)   ----  EHS6T +5Vout (pin 7)

Is this a normal behaviour ? Im using RS232Demo.jar ("comm:COM1;blocking=on;baudrate=115200") as a base for the program (reading with;).