Further details about my query
On using (dmesg | grep tty) to find out the details of COMPORT establisation, it returned with
[ 1178.254634] cdc_acm 5-1:1.0: ttyACM0: USB ACM device
On trying to establish serial port communication using
setserial -g /dev/ttyS[ACM0], it said UNKNOWN UART
/dev/ttyS0, UART: unknown, Port: 0x03f8, IRQ: 4
Can anyone solve my problem now ??