Tornado

Tornado 2.0
User’s Guide
As a further debugging aid, you can also configure the serial-mode target agent to
echo all characters it receives over the serial line. This is not the default
configuration, because as a side effect it stops the boot process until a target server
is attached. If you need this configuration in order to set up your host serial port,
edit wind/target/src/config/usrWdb.c. Look for the following lines:
#ifdef INCLUDE_WDB_TTY_TEST
/* test in polled mode if the kernel hasn't started */
if (taskIdCurrent == 0)
wdbSioTest (pSioChan, SIO_MODE_POLL, 0);
else
wdbSioTest (pSioChan, SIO_MODE_INT, 0);
#endif /* INCLUDE_WDB_TTY_TEST */
In both calls to wdbSioTest( ), change the last argument from 0 to 0300.
With this configuration, attach any terminal emulator on the host to the tty port
connected to the target to verify the serial connection. When the serial-line settings
are correct, whatever you type to the target is echoed as you type it.
! WARNING: Because this configuration change also prevents the target from
completing its boot process until a target server attaches to the target, it is best to
change the wdbSioTest( )third argument back to the default 0 value as soon as you
verify that the serial line is set up correctly.
Starting the Target Server
After successfully testing the serial connection, you can connect the target server
to the agent by following these steps:
1. Close the serial port that you opened for testing (if you do not close the port,
then it will be busy when the target server tries to use it).
2. Start the target server with the serial back end to connect to the agent. Use the
tgtsvr -B option to specify the back end, and also specify the line speed to
match the speed configured into your target:
% tgtsvr -V targetname -B wdbserial -bps 38400 &
You can also use the Tornado GUI to configure and start a target server (see
3.5 Managing Target Servers, p.72).
36