NXP Semiconductors PCAL6524EV, Руководство пользователя, Страница: 22 / 31

NXP Semiconductors
UM11711
PCAL6524EV-ARD evaluation board
7 GUI description
A GUI application is available for the three EVK boards from NXP Semiconductors. The
application is common for all EVKs and the development boards of the entire family of IO
expanders produced by NXP Semiconductors (PCAL6408A-ARD, PCAL6416AEV-ARD,
PCAL6524EV-ARD, and PCAL6534EV-ARD).
This section describes the GUI application and how the user can control the
PCAL6524EV-ARD daughterboard from the graphical interface. First, install the GUI
package and software on the PC (Windows 10). For more details, see UM11581 .
Once installation is complete, assure that one of the mentioned three EVKs with attached
PCAL6524EV-ARD daughterboard is connected to a PC and powered-on. Open
NXP_(PCAL65x4,PCAL64xxA) GUI application. An interface will appear as is shown in
Figure 11 :
The GUI application starts with Settings tab (marked with red arrow). The left side of the
window displays Board settings . The section provides the following settings:
• Select EVK: displays the 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.
• Select COM port:
displays port selected for the communication. The port is
automatically selected by the system (in the picture is COM 3).
• Select Board: allows the user to select the correct daughterboard (the application can
support four different boards). In Figure 10 , the selected board is PCAL6524. Selecting
a wrong daughterboard causes the connection to fail and a pop-up window with the
message: “Unable to Connect with Daughter Card” appears on the screen.
In the right side of the window is located Device setting section. The following settings
are provided:
• I2C Frequency: displays the I
2
C-bus clock frequency (100 kHz, 400 kHz, and 1 MHz).
With the Set button the value is written in the internal register of PCAL6524 IC.
• Address Selection: allows the user to select the hardware address of PCAL6524 IC.
• Reset Chip: reset the internal register of PCAL6524.
Assuming the correct parameters are chosen, clicking the Connect button establishes
the connection with the EVK. In the bottom side of the GUI window a status bar shows in
real time the status connection between PC and the EVK.
UM11711 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2022. All rights reserved.
User manual Rev. 1.0 — 19 January 2022
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