Help needed for diagnose/debug arduino+UART

Projects Networking, Protocols, and Devices
3

I am using Arduino 1.8.3 32bit on a windows 10 machine

// transmitter (hardware serial)
char transmittedChar = '1';

void setup() 
{
    Serial.begin(9600);
    Serial.println("<Arduino is ready>");
}

void loop() 
{
    transmitOneChar();
}

void transmitOneChar() 
{
    Serial.write(transmittedChar);
}

// receiver (hardware serial)

char receivedChar;
boolean newData = false;

void setup() 
{
    Serial.begin(9600);
    Serial.println("<Arduino is ready>");
}

void loop() 
{
    recvOneChar();
    showNewData();
}

void recvOneChar() 
{
    if (Serial.available() > 0) 
    {
        receivedChar = Serial.read();
        newData = true;
    }
}

void showNewData() 
{
    if (newData == true) 
    {
        Serial.println(receivedChar);
        newData = false;
    }
}

Transmitter code:

11111111111111111111111111111111.........//keeps on going

Receiver code:

On transmitter UART, TX led on arduino lights up, on receiver UART, RX led doesn't light up. Hope this is enough information.