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You may set the pin's drive mode to high Z, There are APIs for doing that, check the UART_Pins.h files.
bkphat, Something like #define Pin_DM_DIG_HIZ (0x01u) // High Impedance Digital. #define Pin_DM_STRONG (0x06u) // Strong Drive. PIN_SetDriveMode(Pin_DM_STRONG); //digital output PIN_SetDriveMode(Pin_DM_DIG_HIZ); //digital input