UART receiving problem

[jenya7]

I see all prints outside like

Code: Select all

Serial.println("UDP OK");


Now I want to receive a char from a terminal

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void UART_Get()
{
     char chr;
    if (Serial.available() > 0)
    {
        chr = Serial.read();

        //for debug
        Serial.print(chr);
    }
}


and I put it in a loop

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void loop()
{
     UART_Get();
}


But I get nothing.
I test the RX pin with a scope and I see incoming signals on the pin.
What can be wrong?