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DRV8848 EVM GUI
3. A message describing how to connect the motor appears. The message also instructs the user to
place the shunt on J2.
NOTE: The shunt on J2 is only used for parallel mode, it should be placed on J6 for all other
operations.
The parallel mode can now be controlled using the BINx sliders. The operation is the same as normal
mode.
a. For slow decay mode, decreasing BIN1 while holding BIN2 at 100% causes the brushed motor to run
in one direction. Decreasing BIN2 while holding BIN1 at 100% causes the brushed motor to run in the
opposite direction.
b. For fast decay mode, increasing BIN1 while holding BIN2 at 0% causes the brushed motor to run in
one direction. Increasing BIN2 while holding BIN1 at 0% causes the brushed motor to move in the
opposite direction.
3.4
Stepper Mode Operation
The DRV8848 EVM provides the ability to operate a stepper motor in full step mode. The firmware
provides the necessary timing pulses on the INAx/INBx input signals to drive the stepper at the desired
speed and direction.
To use the stepper feature, set the Mode select pulldown to Stepper mode.
Set the desired stepper step and direction, and then select RUN. The stepper speed and direction can be
changed as the motor is running but may cause the motor to stall.
3.5
Menu Options
3.5.1
File
The File menu contains the options as shown in
12
DRV8848EVM Hardware and GUI User Guide
Figure 13. Stepper Mode Operation
Figure
Copyright © 2014–2019, Texas Instruments Incorporated
14. This section describes each of the options.
SLLU210C – October 2014 – Revised September 2019
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