Getting Started with the DS1840K . . .
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illuminates when data passes from the software to the demo board. LED1 is disabled by default because it
slows down the communication considerably.
Property pages that follow behind the General tab will vary depending on which device you are evaluating.
Figure 12 shows a typical “Pots” page (DS1845 in this case). The pots page is probably where you will be
doing the majority of your evaluation.
The “Pots” page groups the controls for each pot. Each pot can be modified in three ways: with the edit
box, the spin control, or the slider control. Secret: the pots can also be set/read using the memory page
discussed later. The easiest way to move the pot is by using the edit box. Simply click on the edit box,
type a decimal value in the appropriate range, and click on “Write to Pot”. To read the pot setting, click on
“Read Pot”. Another way to
move the pot is by using the
spin control (up/down arrows).
Click up or down until you
reach the desired value. Then
click on “Write Pot”. The most
fun method, however, is using
the slider control. Drag the
slider the desired position and
release. The value of the slider
will be sent to the pot when you
release the mouse button. Also,
once a slider is selected, you can
use the keyboard to move it as
well.
For even more excitement,
enable the oscillator circuit (DIP
switch 5) and listen to the tone
change as you modify the pots.
Figure 12. Typical “Pots” page.
Another common page is the
“Memory” page. The Memory
page can be used to read and
write data to the EEPROM. The
“Page Mode” allows you to
read/write memory one page at a
time (8 bytes). The “Byte
Mode”, as its name suggests,
allows you to read/write one
byte at a time. For fun, try
reading F8 and F9. These are
the addresses of Pot 1 and Pot 0,
respectively.
Figure 13. Memory page.
