Texas Instruments DRV84 EVM Series User Manual

This document is provided with the DRV84xx evaluation module (EVM) as a supplement to DRV84xx
Stepper Motor Driver datasheet. This user's guide details on how to use the DRV84xx EVM GUI
application.
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1 Overview
2 Hardware and Software Setup
3 GUI Application
1 DRV84xx EVM GUI (Landing Page)
2 DRV84xx EVM GUI (Home Page)
3 DRV84xx EVM GUI (Device Connection Pane)
4 Serial Port Configuration
5 DRV84xx EVM GUI (Stepper Motor Control Page)
6 Controls Available for Speed Mode
7 Controls Available for Step Mode
8 Stop Conditions
9 DRV84xx EVM GUI (Decay Mode)
10 DRV84xx EVM GUI (Menu Bar - Help Option)
Trademarks
1 Overview
The DRV84xx EVM is a platform to support prototyping and evaluation for the DRV84xx, a medium-
voltage dual H-bridge driver for stepper driving applications. The DRV84xx drives a single bipolar stepper
with microstep settings ranging from full-stepping to 1/256 resolution with internally-regulated microstep
levels. It provides a variety of programmable decay settings.
The EVM uses an MSP430™ microcontroller and a USB interface chip to manage communication from
the GUI software application installed on a PC computer with Windows®. The GUI sends serial
commands to the MSP430 to control the device signals, monitor faults, read and write SPI registers, and
drive a stepper motor by issuing the step commands at the desired rate. This document describes the
software and tools used to evaluate DRV84xx device for stepper motor driving on the DRV84xx EVM.
2

Hardware and Software Setup

The hardware (HW) and software (SW) tools that follow are required for the evaluation of DRV84xx:
• DRV84xx EVM
• Stepper motor
• Voltage supply from 4.5 to 48 V
This document only describes the installation and usage of the DRV84xx EVM GUI. For additional details
on hardware connections refer to the
SLOU517A - May 2019 - Revised May 2020
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DRV84xxEVM GUI User's Guide
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DRV84xx EVM User's Guide
Copyright © 2019-2020, Texas Instruments Incorporated
SLOU517A - May 2019 - Revised May 2020
Contents
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User's Guide
DRV84xxEVM GUI User's Guide
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