INA230EVM Software Overview
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5.3.4 Graph Tab
The Graph tab contains a plot window that shows the progression of data over time on the INA230. All
four variables at the bottom of the EVM software (V
BUS
, V
SHUNT
, Current, and Power) can be plotted using
the drop-down box directly above the graph. After the desired plot has been selected, toggle the
Continuously Poll Data button above the plot to begin polling for data. If the user desires to save the
data from the plot, simply select the USB Controls drop-down at the top of the page, then select the Start
Graph Log option. Once the Start Graph Log has been selected, the user is prompted to select a location
for the data and to name the file.
Figure 25. Graphing the INA230 Data
5.3.5 Auto-Write and the Supply Voltage
The INA230EVM software allows users to customize the board level voltage, regulated by the SM-USB-
DIG. By selecting either 3.3 V or 5 V, the user can designate which voltage the device should operate at.
The software also includes an Auto-Write feature as shown in Figure 26, which is enabled by default. This
feature automatically updates the register table whenever a change is made. When this feature is
enabled, the Write All Registers button serves little purpose and is only used as an alternative to when
AutWrite is disabled.
Figure 26. Auto-Write, Power Button, and Voltage Control
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INA230EVM Evaluation Board and Software Tutorial SBOU124–March 2012
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