I want to communicate the sensor with the uart communication using the arduino pins on the board. Baud rate 9600 is seen in the documents. Is it possible to set a baud rate of 115200. How to do it if possible.
The Arduino IOP and the UART IP is in the PL, and unfortunately this parameter is not controllable from software.
You would need to change this parameter and rebuild the base overlay.
The parameter is here in the Tcl.
You could also build the block design in Vivado and change it in the GUI.