RabbitCore RCM2200, Getting Started Manual

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2–4 Hardware Setup RabbitCore RCM2200
2.2.2 Prototyping Board Expansion
The Prototyping Board comes with several unpopu-
lated areas, which may be filled with components to
suit the user’s development needs. After you have
experimented with the sample programs in
Section 3.5, you may wish to expand the board’s
capabilities for further experimentation and devel-
opment. Refer to the Prototyping Board schematic
(090–0122) for details as necessary.
Module Extension Headers The com-
plete pin set of both the Master and Slave
RabbitCore modules are duplicated at
these two sets of headers. Developers can
solder wires directly into the appropriate
holes, or, for more flexible development,
26-pin header strips can be soldered into
place. See Figure 1–1 on page 1–2 for the
header pinouts.
RS-232 Port
Two 2-wire or one 4-wire
RS-232 serial port can be added to the
Prototyping Board by installing a driver
IC and four capacitors. The Maxim
MAX232CPE driver chip or a similar
device is recommended for the U2. Refer
to the Prototyping Board schematic for
additional details.
A 10-pin 0.1-inch spacing header strip
can be installed at J6 to permit connec-
tion of a ribbon cable leading to a stan-
dard DE-9 serial connector.
All RS-232 port components mount to
the underside of the Prototyping Board,
between the Master module connectors.
NOTE: The RS-232 chip, capacitors
and header strip are available from
electronics distributors such as
Digi-Key.
Proto Board Component Header
Four I/O pins from the module are hard-
wired to the Prototyping Board LEDs
and switches.
To disconnect these devices and permit
the pins to be used for other purposes, cut
the traces between the pin rows of JP1.
Use a knife or similar tool to cut or
break the traces crossing JP1 in the area
between the silk-screened arrows, as
indicated in Figure 2–2 below.
Use jumpers across the positions on JP1
if you need to reconnect any of the
devices later on.
2.3 Development Hardware
Connections
There are four steps to connecting the Prototyping
Board for use with Dynamic C and the sample pro-
grams:
1.
Attach the RabbitCore module to the Proto-
typing Board.
2.
Connect the programming cable between
the RabbitCore module and the worksta-
tion PC.
3.
Connect the module’s Ethernet port to a
PC’s Ethernet port, or to an Ethernet net-
work.
4.
Connect the power supply to the Prototyp-
ing Board.
Figure 2–2:
JP1, seen from the underside
of the Prototyping Board. The connections to
the LEDs and switches may be broken by
cutting the four traces between the arrows.