Re: Debug serial port
- From: "Shu Wei" <Shu Wei@xxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Thu, 31 Mar 2005 01:43:01 -0800
Hi Bruce,
I met the same problem as Dongquan.Z. and i am using a XScale PXA255 as
well. i modified the settings what you mentioned, but it seemed that the
serial port still couldn't be used when i tried to make a connection to an
external modem in windows ce. there is no debug message output from winCE via
the hyperterminal if i connect the board to PC's hyperterminal. it seems that
the serial port has been closed. am i right?
btw, Dongquan.Z, have you solved it as what Bruce said?
Many thanks!
Best regards,
Shu Wei
"Bruce Eitman (eMVP)" wrote:
> Looking at the XSC1BD BSP, you just need to define PRODUCT_SERIAL_ENABLED to
> disable serial debug output. Yes, that seems backward but what it does is
> enable the standard serial port and disable the debug port. You define
> PRODUCT_SERIAL_ENABLED by clearing the environment variable BSP_NOSERIAL
>
> set BSP_NOSERIAL=
>
> --
> Bruce Eitman (eMVP)
> Senior Engineer
> beitman AT applieddata DOT net
>
> Applied Data Systems
> www.applieddata.net
> An ISO 9001:2000 Registered Company
> Microsoft WEP Gold-level Member
>
>
> "Dongquan.Z" <dongquan@xxxxxxxxxxxxxxxxx> wrote in message
> news:eXslq58%23EHA.2192@xxxxxxxxxxxxxxxxxxxxxxx
> > The following is the code from the debug.c file:
> >
> >
> > void OEMInitDebugSerialKernel (void)
> > {
> > volatile GEN_UART *pDebugUartPort;
> > PDRIVER_GLOBALS pDriverGlobals;
> > volatile GPIO_REGS *pGPIO_REGS;
> > static BOOL DebugEtherPresent;
> >
> > pDriverGlobals =
> (PDRIVER_GLOBALS)DRIVER_GLOBALS_PHYSICAL_MEMORY_START;
> > pDebugUartPort=(volatile GEN_UART *)DEBUG_PORT_ADDRESS;
> > pGPIO_REGS = (volatile GPIO_REGS *)GPIO_BASE_U_VIRTUAL;
> >
> > //
> > // This UART initialization needs to be tested...
> > //
> > // Ensuring UART and interrupts are off before configuring
> > // even though LCR and IER reset values are 0x0.
> > pDebugUartPort->lcr = 0x0; // clearing DLAB
> > pDebugUartPort->ier_dlh = 0x0; // IER_DLH = 0x0
> >
> > // Set the Baud Rate (Divisor low = DEBUG_BAUD_38400)
> > // Divisor latches are at offsets 0 and 1, which are
> > // receive/transmit data and ier registers.
> > pDebugUartPort->lcr = 0x80; // Access Divisor
> > pDebugUartPort->thr_rbr_dll = DEBUG_BAUD_38400; // low byte divisor
> > pDebugUartPort->ier_dlh = 0x00; // high byte divisor
> > pDebugUartPort->lcr = 0x0; // clearing DLAB
> >
> > //Setting UART properties to 8N1
> > pDebugUartPort->lcr = 0x3; // 8 bits, 1 stop, no parity. Also
> > LCR DLAB bit = 0
> >
> > pDebugUartPort->iir_fcr=0x01; // Enable FIFO
> > pDebugUartPort->iir_fcr=0x07; // Clear Rx,Tx FIFOs
> >
> > // Don't enable UART, place in polled mode
> > // UART is not enabled till GPIO pins are configured also.
> > // We don't have to configure INTC_REGS to use IRQ and enable
> interrupt
> > // as UART is used in polling mode only.
> > pDebugUartPort->ier_dlh = 0x0;
> >
> > //Ensuring loop back test mode is off
> > //even though MCR reset value is 0x0.
> > pDebugUartPort->mcr = 0x0; //UART is in normal mode.
> >
> >
> > // Configuring GPIO pins for FFUART
> > if(DEBUG_PORT_ADDRESS == FFUART_BASE_U_VIRTUAL)
> > {
> > //Initialize GPIO pins
> > //Write 0 on GPIO pins 39, 40 and 41 before configuring them as
> > outputs.
> > pGPIO_REGS->GPCR_y |= (GPIO_39 | GPIO_40 | GPIO_41);
> >
> > //Configure direction of GPIO pins 34, 35, 36, 37 and 38 as input
> > //and GPIO pins 39, 40 and 41 as output
> > pGPIO_REGS->GPDR_y &= (~GPIO_34 & ~GPIO_35 & ~GPIO_36 & ~GPIO_37 &
> > ~GPIO_38);
> > pGPIO_REGS->GPDR_y |= (GPIO_39 | GPIO_40 | GPIO_41);
> >
> > //Configure GPIO pins 34, 35, 36, 37 and 38 for Alt_fn1. And pins
> > 39, 40 and 41 for Alt_fn2.
> > pGPIO_REGS->GAFR0_y |= ( GPIO_34_AF1_FFRXD | GPIO_35_AF1_CTS |
> > GPIO_36_AF1_DCD |
> > GPIO_37_AF1_DSR | GPIO_38_AF1_RI |
> > GPIO_39_AF2_FFTXD | GPIO_40_AF2_DTR |
> > GPIO_41_AF2_RTS);
> > }
> > else if(DEBUG_PORT_ADDRESS == BTUART_BASE_U_VIRTUAL)
> > {
> > //Configuring GPIO pins for BTUART
> > //Initialize GPIO pins
> > //Write 0 on GPIO pins 43 and 45 before configuring them as outputs.
> > pGPIO_REGS->GPSR_y |= (GPIO_43 | GPIO_45);
> >
> > //Configure direction of GPIO pins 42 and 44 as input
> > //and GPIO pins 43 and 45 as output
> > pGPIO_REGS->GPDR_y &= (~GPIO_42 & ~GPIO_44);
> > pGPIO_REGS->GPDR_y |= (GPIO_43 | GPIO_45);
> >
> > //Configure GPIO pins 42 and 44 for Alt_fn1. And pins 43 and 45 for
> > Alt_fn2.
> > pGPIO_REGS->GAFR0_y |= ( GPIO_42_AF1_BTRXD | GPIO_44_AF1_CTS |
> > GPIO_43_AF2_BTTXD | GPIO_45_AF2_RTS);
> > }
> >
> > //UART is enabled here
> > pDebugUartPort->ier_dlh = 0x40; //Enabling UART
> >
> > } // OEMInitDebugSerialKernel ()
> >
> >
> > void OEMInitDebugSerial(void)
> > {
> >
> >
> > // Do the real work. Separated out so that output is not forced on
> > resume.
> > // We don't want to change state.
> >
> >
> > OEMInitDebugSerialKernel ();
> >
> > OEMWriteDebugString(TEXT("\r\n"));
> >
> OEMWriteDebugString(TEXT("**************************************************
> ****\r\n"));
> >
> OEMWriteDebugString(TEXT("**************************************************
> ****\r\n"));
> >
> OEMWriteDebugString(TEXT("**************************************************
> ****\r\n"));
> >
> OEMWriteDebugString(TEXT("**************************************************
> ****\r\n"));
> >
> OEMWriteDebugString(TEXT("**************************************************
> ****\r\n"));
> > OEMWriteDebugString(TEXT(DEBUG_OUT_STRING));
> >
> > } // OEMInitDebugSerial()
> >
> >
> > I modified the following code line:
> >
> > //UART is enabled here
> > pDebugUartPort->ier_dlh = 0x40; //Enabling UART
> >
> > to
> >
> > //UART is enabled here
> > pDebugUartPort->ier_dlh = 0x0; //Enabling UART
> >
> > but the ce system can not boot,and the PB output window display:
> >
> > Waiting for connecting to the kernal debuger!
> >
> >
> > Please help me!
> >
> >
> > Thanks
> >
> >
> >
> > "Bruce Eitman (eMVP)" <beitmannospam@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
> дÈëÏûÏ¢ÐÂÎÅ:Ob%23QHbk%23EHA.2180@xxxxxxxxxxxxxxxxxxxxxxx
> > > Pretty much the same way. That link shows two things to do:
> > >
> > > 1. Turn off using the UART in the kernel (look for debug.c)
> > > 2. Add the com port into the registry so that users can access it.
> > >
> > > It is your platform, you can do this any way that meets your needs. You
> > > could do it based on an environment variable/macro, hard code it ...
> > >
> > > --
> > > Bruce Eitman (eMVP)
> > > Senior Engineer
> > > beitman AT applieddata DOT net
> > >
> > > Applied Data Systems
> > > www.applieddata.net
> > > An ISO 9001:2000 Registered Company
> > > Microsoft WEP Gold-level Member
> > >
> > >
> > > "Dongquan.Z" <dongquan@xxxxxxxxxxxxxxxxx> wrote in message
> > > news:uAPXpsd%23EHA.3368@xxxxxxxxxxxxxxxxxxxxxxx
> > >> Thank you very much!
> > >>
> > >> But, My platform is a Xscale PXA255£¬for such a platform, How to
> disable
> > > the
> > >> debug serial port?
> > >>
> > >>
> > >>
> > >> Best Regards!
> > >>
> > >>
> > >> "Bill T" <btheisen@xxxxxxxx>
> > > дÈëÏûÏ¢ÐÂÎÅ:%23uRvNQ06EHA.2572@xxxxxxxxxxxxxxxxxxxxxxx
> > >> > Check out this link:
> > >> >
> > >
> http://msdn.microsoft.com/embedded/community/community/tips/ce/disable/default.aspx
> > >> >
> > >> > "Dongquan.Z" <dongquan@xxxxxxxxxxxxxxxxx> wrote in message
> > >> > news:e1gNckv6EHA.1452@xxxxxxxxxxxxxxxxxxxxxxx
> > >> >> Hi, Everyone
> > >> >>
> > >> >> How to modify the OAL codes to make the serial port can't be used by
> > > the
> > >> >> kernal.
> > >> >>
> > >> >> I want to make the Serial Port COM1 as a headless device's output!
> > >> >>
> > >> >>
> > >> >> Thanks
> > >> >>
> > >> >> Dongquan.Z
> > >> >>
> > >> >>
> > >> >
> > >> >
> > >>
> > >>
> > >
> > >
> >
> >
>
>
>
.
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