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3.1. Hardware
23
nection, as shown in the Table 3.2.
5
PC/104 devices, screens, USB -mice, keyboards,
USB-sticks, hard drives and serial communication devices can easily be attached to the
Wafer-9371A, and communication with the device is made simple by an Ethernet connector.
COM1 is set up to be using RS-232 signals, but COM2 could be congured to communicate on RS-232, RS-422 or RS-485 by modifying the jumper JP4 settings on Wafer9371A. The location of JP4 is showed in Figure 3.4, and the pin conguration is showed
in Figure 3.3.
Figure 3.4:
The JP4 pin locations on Wafer-9371A. Figure taken from [IEI Technology
Corp., 2006].
PIN
COMBINATION
DESCRIPTION
1-3
RS-232
3-5/2-4
RS-422
3-5/4-6
RS-485
Table 3.3: The Wafer-9371A JP4 settings to congure COM2.
3.1.3 Storage
When the work on this thesis started, the CyberBike was equipped with a compact ash
card (CF) as storage medium, shown in Figure 3.5. This is a 1GB
6
TwinMOS UltraX
CompactFlash card, with 140x reading transfer speed. It is important that this speed
is high, to avoid creating a bottleneck in the execution speed.
5
6
Universal Serial Bus
Giga Byte