UART5 problem

Dear all

I'm found a problem on UART5.

At the startup I use   UARTCharPut() to send a charactere and the routine work correctly.

Into the loop I used UARTprintf() but the firmware stall.

Follow the code:

 while(1)
    {
       
              pui8MsgData[0]= ui32MsgData;            // Messafe data to trasmit on CAN0 controller
            
        // Send the CAN message using object number 1 (not the same thing as
        // CAN ID, which is also 1 in this example).  This function will cause
        // the message to be transmitted right away.
        CANMessageSet(CAN0_BASE, 1, &sCANMessageTX, MSG_OBJ_TYPE_TX);  

        
              while((CANStatusGet(CAN1_BASE, CAN_STS_NEWDAT)& 0x1)== 0x1)
                {
                    CANMessageGet(CAN1_BASE, 1, &sCANMessageRX, 0);
                }
            
        // Check the error flag to see if errors occurred
        if(g_bErrFlag)
        {
          UARTprintf("Message Tx: NAK");    // code stall here
                    GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_7, 0x00); 
                   g_bErrFlag= 0;
        }
        else
        {
            
          UARTprintf("Message Tx: OK");     // cade stall here
          GPIOPinWrite(GPIO_PORTQ_BASE, GPIO_PIN_7, 0x80);        // TX OK LED verde acceso        
        }

        // Increment the value in the message data.
        ui32MsgData++;
                
                SimpleDelay();
    }

if I remuve the two UARTprintf() statement code run correctly.

Have you same ideas?

Many Thanks

M