NXP Semiconductors
UM11623
PCA9959HN-ARD evaluation board
8 GUI description
A GUI application is available for the three EVK boards from NXP Semiconductors. The
application is common for all EVKs/development boards.
This section describes the GUI application and how the user can control the
PCA9959HN-ARD daughter board from the graphical interface. First, install the GUI
package and software on the PC (Windows 10). For more details, see
.
Once installation is complete, make sure that one of the three supported EVKs with
the attached PCA9959HN-ARD daughter board is connected to the PC and powered-
on. Open the NXP_GUI(PCA995x) GUI application. An interface appears as shown in
.
8.1 Settings
Figure 12. Graphical user interface — Settings tab activated
The GUI application starts with the
Settings
tab (marked with red arrow). In the right side
of the blue region are located two read-only flags mapped in “MODE2 register (#01h).
The
FAULT
flag indicates that the PCA9959HN-ARD’s internal controller has detected
an LED output error (no load, short). The
OVERTEMP
flag indicates that the PCA9959
die temperature exceeds its specified limit (see section 7.2.3 “LED error detection” and
section 7.2.4 “Overtemperature protection” in PCA9959 data sheet).
Note:
Due to the absence of status registers for the LED outputs in the PCA9959 IC, for
the PCA9959HN-ARD board, the LED indicators on the GUI are not indicating the status
of the onboard LEDs (there is no information to be read and displayed in the GUI).
Below the LED indicators are three sections:
General Setting
on the right,
Device
Setting
in the middle, and
Board Setting
on the left.
Board Setting
parameters are:
• Select EVK
displays a list of EVKs. Selecting a wrong EVK board causes the
connection to fail and a pop-up window with the message: “
Unable to Connect with
EVK
” appears on the screen.
UM11623
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2021. All rights reserved.
User manual
Rev. 1 — 21 May 2021
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