HARDWARE
The
system schematic is shown in Figure 1. The pins
of the STK500 board are depicted along the bottom.
Note that the RXD and TXD pins for the RS-232
connection and the data flash are also located
on the board.
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(Click here to enlarge)
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Figure
1—The system’s schematic shows the STK500
and its connections with each of the other
components. |
Port
A connects to the photodiode and the switches.
Port B also connects with the switches as well
as the data flash. Port C controls the LCD and
Port D sends data to the RS-232 connection and
the field effect transistor. These ports connect
to the ATmega32 microcontroller.
