SLVU681 Datasheet, PDF (3/21 Pages) Texas Instruments – DRV8818EVM Evaluation Module

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Installing Drivers And Software
1.4 Jumpers
Two styles of jumpers are on the DRV8818EVM: two-pin jumpers and three-pin jumpers.
Users can configure three-pin jumpers independently from other two- or three-pin jumpers. However, two-
pin jumpers must all be closed or left open.
1.4.1 VREF SELECT, JP1
To configure the VREF SELECT jumper: (a) Select an analog voltage derived from VDD through a voltage
divider implemented as a potentiometer R4. (b) Select an analog voltage derived from the MSP430’s
digital-to-analog converter (DAC) channel 0 (DAC0). Set as the following inset shows in (b) if you want to
use the GUI to control the VREF voltage.
(a)
(b)
1.4.2 DECAY SELECT, JP6
To configure the DECAY SELECT jumper: (a) Select an analog voltage derived from VDD through a
voltage divider implemented as a potentiometer R6. (b) Select an analog voltage derived from the
MSP430’s DAC channel 1 (DAC1). Set as the following inset shows in (b) if you want to use the GUI to
control the DECAY modes.
(a)
(b)
1.5 Motor Outputs
Users can connect the bipolar stepper motor into the DRV8818EVM in three ways: four-pin header (J2),
four-position terminal block (J3), or test clips. Each connection style offers identical connectivity to the
device’s output terminals. The recommended way, however, is to use the header or terminal block
because the test stakes traces are of low-current handling capability.
2 Installing Drivers And Software
2.1 Installing FTDI USB Driver
Download the DRV8818EVM Software and Development package from the TI Web site in the
DRV8818EVM Evaluation Module product folder. Find and unzip Step 1 - INSTALL_USB_Driver into a
separate folder. See instructions on how to install the FTDI USB driver on a Windows™-based computer
in the FTDI_Drivers_Install_Readme.pdf file.
2.2 Installing DRV8818EVM Windows Application Software
The available download also includes a file named DRV8818EVM_Windows7_Application.zip. Copy the
contents of this folder to any desired folder on the computer. This causes the Settings.ini file to be written
to the desired folder on software exit. This action cannot occur if the application is run within the zip file.
Make sure to first unzip all the contents of the zip file into a folder on your computer.
2.3 Running Windows Application Software
To run the application, double-click the DRV8818EVM.exe application icon found on the same folder into
which the application was extracted. It is also available in the START menu under Texas Instruments Inc.
SLVU681 – February 2012
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DRV8818EVM Evaluation Module
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