NXP Semiconductors PCF2131-ARD, Руководство пользователя, Страница: 22 / 31

NXP Semiconductors
UM11597
PCF2131-ARD evaluation board
Figure 14. PCF2131-ARD daughterboard connected to Aardvark I
2
C / SPI host adapter
7 GUI description
This section describes the GUI application for the three mentioned EVKs and how the
user can control the PCF2131-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 three EVKs with attached PCF2131-
ARD daughterboard is connected to a PC and powered-on. Open PCF2131 RTC GUI
application. An interface appears as shown in Figure 15 :
The GUI application starts with Settings tab (marked with red arrow). The left side of the
window displays the following settings:
• COM port: displays port selected for the communication. The port is automatically
selected by the system (in the picture is COM 39).
• I2C speed: displays the I
2
C-bus clock frequency (100 kHz, and 400 kHz).
• SPI Speed: displays the SPI-bus clock frequency (2 MHz, and 6 MHz).
• I2C
and
SPI
buttons: allows the user to select the type of communication.
• Connect: initiate the connection to the EVK / daughterboard device.
• Init Board: initiate the daughterboard.
In the right side of the window is located Device settings field. The following settings are
provided:
• SW Reset (SR): initiate the software reset.
• CLR Prescaler (CPR): clear the Prescaler register.
• CLR Timestamp CTS):
clear the Timestamp register.
• Hour Mode: select the hour display mode (12 / 24).
• Int A/B Mode: select the interrupt type of signal (voltage level / pulse).
• 100th Seconds Counter: enable / disable the 100th seconds counter
• Read:
allow the user to read the internal registers of the DUT.
Near to each button (on the right side, or under) the register address and the bit number
is displayed. See the PCF2131TF datasheet for more details about register map of the
DUT IC.
In the bottom side of the GUI window a log window displays the communication process
between the PC and the EVK / daughterboard device. The window can be cleared from
UM11597 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved.
User manual Rev. 1.0 — 15 September 2021
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