Errata
12
SLVUBM4A – April 2019 – Revised October 2019
Copyright © 2019, Texas Instruments Incorporated
DRV8889-Q1EVM GUI User's Guide
Figure 12. DRV8889-Q1 EVM GUI (Menu bar – Help Option)
3.3.7.1
File Menu
The File Menu has the following options:
•
Program Device
- The user can load the firmware (.out) file onto the device by clicking this option. For
the firmware load to work, MSP430 FET needs to be plugged into the J2 connector on the EVM board.
•
Load/Save Registers
– The user can save (and load) a particular configuration of the registers. This
saves time when the user need to reconfigure the registers after power cycle.
3.3.7.2
Options Menu
This menu provides the option to configure the serial port communication settings.
3.3.7.3
Help Menu
The Help Menu contains options to view Readme File and About Section. The about section displays the
installed software information including the application version.
4
Errata
This section outlines known errata with the DRV8889-Q1EVM and GUI.
1. When the board is powered, and the "Motor Driver" status is set to "Awake", UVLO and CPUV faults
will display in the fault monitor and in the register map for 1p0 sample (CTRL8 register=0000b). These
do not interfere with the operation of the EVM, and they can be cleared by setting the CLR_FLT bit in
the register map. If the UVLO fault is not be clear after try 2 or 3 time Clear command, please re-start
the GUI.
2. There is 1-4 seconds delay between the GUI and EVM when updating settings between the GUI and
the board. If the setting is not gone through or is ignored, please try updating settings multiple times in
register map page. Updates and faults may not occur immediately in the GUI, but the EVM board will
display faults on the nFAULT LED in real time. STALL_TH and TRQ_COUNT updates in the 'Stall
Threshold Graph' are also delayed.
3. If 'Step and direction control' is set to 'SPI' and a high step rate is chosen for 'Target Speed,' the GUI
may lose communication with the EVM due to the large number of SPI transactions in a given amount
of time.