Linux: wired input from the RS232

Tool/software: Linux

Hi,

For our telematics device we using DAR604 processor and ti-sdk-am335x-evm-07.00.00.00-Linux-x86 SDK .

Now for inter-acting with the uboot /applications on device one of the processor UART is interface with RS232.

When we are keeping our board for test(for long cycle), we observed input on RS232 ( such as \r\n (ENTER) or weird character) even we are not provided it.

please suggest what can be the issue.

Also we wanted to disable the serial port (Rx gpio pin) of RS232, how we can do this (were we can configure this setting)

 Thanks and regards