27
GR-UT699 Development Board
User Manual
To perform software download and debugging on the processor, a link from the Host
computer to the DSU interface of the board is necessary. A connection to the DSU of the
board can be made using a USB cable (Type-A to Mini-AB connectors) from the Host PC to
the USB-DSU connector on the front panel.
Note, to use the USB-DSU interface you need to install the FTDI Virtual Com driver on the
Host PC. This driver allows the USB connection to the board to be used as a 'virtual' serial
port, operating at baud rates up to 460800 Baud.
These drivers can be downloaded from the
FTDI
web site, (www.ftdichip.com/FTDrivers.htm)
and drivers for both Linux and Windows are available. Information for the installation of
these drivers can be found on the
FTDI
web site
To perform program download and software debugging on the hardware it is necessary to
use the Gaisler Research
GRMON
debugging software, installed on a host PC (as
represented in Figure 2-8).
Note that it is necessary to use the 'PRO' version of GRMON, as the
UT699
ASIC
incorporates FT features. It is not possible to use evaluation version of GRMON with this
ASIC. Please refer to the
GRMON
documentation for the installation of the software on the
host PC (Linux or Windows), and for the installation of the associated hardware dongle.
Starting
GRMON
, with the command:
grmon -i
will establish a link to the DSU, and will initialise the processor registers and timers.
The default serial interface used by
GRMON
is
/dev/ttyS0
(linux) or
com1
(Windows).
To use a different serial interface, specify the command
grmon -i -uart /dev/comXX (
where
XX
is the number of the com port)
In the example shown in Figure 3-1 a connection is being made with GRMON over the USB-
Serial link, which in this instance is
com63
on the host (Windows) PC.
The resulting response generated on the Host Computer is shown in Figure 3-1.
Typing the command
flash
will reported the detected Flash Prom memory configuration and
info sys
will provide more information on the processors registers and internal cores as
shown in Figure 3-2.
Rather than using the Serial-DSU interface for debugging it is also fossible to instead use
the
JTAG
interface.
To connect via the JTAG_DSU interface using a
Xilinx JTAG programming cable
, start
GRMON
with the command:
grmon -i -jtag -freq 66
(where '66' is is the clock frequency of the main processor oscillator).
Alternatively to connect via the JTAG_DSU interface using a
Digilent HS-1 JTAG cable
(
when running
GRMON
on
MS-Windows)
, start
GRMON
with the command:
grmon -i -digilent
Program download and debugging can be performed in the usual manner. For more
information on the usage, commands and debugging features of
GRMON,
please refer to
the
GRMON Users Manual
and associated documentation.
© Aeroflex Gaisler AB
March 2013, Rev. 0.6
Содержание GR-UT699
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