Why are you using two UARTs along with the JTAG UART? If I'm right you only want to send and receive data via Serial RS232 link. UART interfaces have Tx and Rx ports, so you only need to use a single UART along with the JTAG UART.
By default the clock source on the board would be 50Mhz and it will be connected to one of the CLK pins on the FPGA. Make sure that the same clock pin is used as the clock source for your project.
Also make sure that the RS232 UART interface that is exported is assigned to the correct pins that are connected to the serial port on the Dev board. Have you created the BSP and application software that makes use of the UART to send/receive data?
Hi Embedded Guy,
Thanks for your fast reply, I am using two UARTs to communicate with two devices, For now I will send from one and receive from the second and vic versa for testing. I am waiting your support.