GUI Application
4
SLVUAW2 – October 2016
Copyright © 2016, Texas Instruments Incorporated
DRV8702-Q1 EVM User’s Guide
2.2
Hardware Setup
The hardware required to run the motor control is a micro-USB cable, the DRV8702-Q1-EVM, and a
power supply with a DC output from 5.9 to 45 V. First the brushed DC motor is connected to the motor
header on the DRV8702-Q1-EVM. Next the micro-USB is connected to the PC and to the DRV8702-Q1-
EVM. Finally the power supply is connected to the DRV8702-Q1-EVM. Verify any faults by testing the
nFAULT pin voltage to have a high logical value (pulled logic low if a fault condition exists).
2.3
DRV8702-Q1-EVM GUI
The DRV8702-Q1-EVM_GUI is provided with the DRV8702-Q1-EVM to control a brushed DC motor and
manipulate various settings. The GUI provides functionality for adjusting the speed and direction of the
motor, adjusting the current-regulation limit, observing the measured drive current, and monitoring the
device status.
Use these steps to control the DRV8702-Q1 EVM through the GUI application
Step 1.
Attach the brushed DC motor.
Step 2.
Plug in the micro-USB cable.
Step 3.
Enable your motor power supply (see
).
Step 4.
Click on the DRV8702-Q1-EVM shortcut either on the desktop or from the start menu to run
the GUI application.
The
Serial Port
page displays the list of COMs available for opening the connection as shown in
. If nothing is physically connected to the PC, the COM drop-down list displays
-- No Ports --
.
Figure 5. DRV8702-Q1-EVM GUI (List COM Ports)
Step 5.
Select the relevant COM from the drop-down list and click on the
Open
button.
Step 6.
After the GUI connects, the window in
is displayed. Verify that the COM port name
(COM port number may differ), and baud rate match what is shown in
. The bottom
left corner of the status bar shows a green indicator to indicate the connection with the
opened COM mentioned in the bracket.