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4 EVM GUI Operation
4.1 Hardware Setup
Follow these steps to setup the EVM prior to launching the GUI:
1. TI recommends to make any jumper configuration changes prior to powering the EVM. The hardware device
variant latches MODE, SLEW RATE and DIAG jumper settings after power-up and coming out of sleep
(however, ITRIP takes effect immediately).
For the SPI device variant, TI recommends to make the IPROPI selection prior to powering the EVM.
2. Connect micro-USB cable to J6
D7 illuminates. The nFAULT LED D2 can blink at a fast rate to indicate the absence of VM power supply.
For proper GUI application operation, to connect the EVM USB cable to a computer prior to applying +BAT
power to the EVM is important. For standalone EVM testing, a USB connection is not necessary.
3. With the +BAT external supply outputs disabled, connect +BAT supply to the screw terminals on the EVM
(J14), observing polarity
4. Energize the +BAT supply. VM LED D3 illuminates. If VM LED does not illuminate, then verify polarity and
check fuses are installed and have continuity. Power consumption is on the order of 10 mA @ +12VDC
input. Significantly higher or lower can indicate a hardware problem if the fuse and supply polarity are
correct.
5. The EVM is ready to be used with the GUI application (
disconnecting and reconnecting VM power before the power supply capacitors are fully discharged a proper
firmware reset does not happen. A proper reset is indicated by the STATUS LED D1 blinking at a rate of
approximately 1 Hz for the SPI variant EVMs and approximately 0.1 Hz for the HW variant EVMs. If the
Status LED is not blinking as expected, then press the reset push button once with jumper J1 installed in the
RST position. Do not unplug the USB cable while the VM power is active. If the USB cable is unplugged,
then switch off the VM power, wait until the power fully discharged and proceed to step 2.
6. The latest version of the GUI application is bundled with the latest version of the EVM firmware. TI
recommends to do a firmware update before selecting and connecting to an EVM variant using the GUI
application. The firmware update procedure is described in
4.2 Launching the DRV824x_DRV814x-Q1EVM GUI Application
Whether using the desktop or web version of the GUI, the user experience and steps covered below is the same.
These steps assume the hardware setup steps in the previous section have already been completed.
1. Launch the GUI application
2. From the screen referenced in
The 'S' and 'H' part number decorators – these indicate either the SPI or Hardware variant of the
device.
SLVUC46D – MARCH 2021 – REVISED NOVEMBER 2023
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(Figure
2-3). The digital portion of the EVM becomes active. LEDs D6 and
(Figure
2-4).
Figure
4-1, select the EVM variant connected using the icons on the right.
Copyright © 2023 Texas Instruments Incorporated
Section
4.2). In certain situations, such as while
Section
4.3.4.
Note
DRV824x_DRV814x-Q1EVM User's Guide
EVM GUI Operation
17
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