OMAPL-138 UART Communication Problem

Hi,

   I am using OMAP-L138 EVK for my project. I am facing UART communication problem when I load uartEcho.c project of ARM processor. I found that UART communication channel is working fine when I first load arm5 uart project without running it and then c674x uart project on EVK. But i do not want to run c674x uart project in my project. I want to run UART on arm processor only. But with ARM code it is not working. Please help me. 

Regards,

Mitul Shinde