Texas Instruments Evaluation Module for DRV8842 DRV8842EVM DRV8842EVM Scheda Tecnica
Codici prodotto
DRV8842EVM
DRV8840
DRV8842
The Windows Application
3.1
The Menu
The menu at the top of the application offers a series of quick options for how the COM port is to behave.
File: Exit
–
Terminates the application
Settings: Port
–
Selects from COM1 to COM4. Default is COM4.
The serial port's actual port number defaults to what we have specified on the
“
USB_Drivers_Install_Readme.pdf
”
. However, any port between COM 1 and COM 4 are equally usable.
Connect: Opens the serial port. When this menu item is pressed, its caption changes to
“
Disconnect
”
.
Disconnect: Closes the serial port. When this menu item is pressed, its caption changes to
“
Connect
”
.
After opening the application, the order of events should be:
1. Go to Settings
→
Port and choose the COM Port where the FTDI device has been configured to work.
If the COM port is 4, then this step can be skipped, as application defaults to COM4.
2. Press Connect. If the port is available, the menu changes the
“
Connect
“
caption to
“
Disconnect
“
. Press
Disconnect to disable the serial communications.
3. After pressing any command button,
<
1
><
0
><
0
>
should return on the text box as an acknowledge.
The text box also changes from red to green.
4. The application is ready for use.
3.2
DRV88xx GPIO Control Signals
Once the application is communicating with the interface board, the control signals can be actuated by
checking or un-checking check boxes on the Control Signals frame.
checking or un-checking check boxes on the Control Signals frame.
Functionality of control signals is identical across the platform. A checked checkbox translates to a HI level
on the respective control signal. Unchecked checkboxes translate to a LO level on the respective control
signals.
on the respective control signal. Unchecked checkboxes translate to a LO level on the respective control
signals.
Both tabs (DRV8840 and DRV8842) will have a very similar set of control signals. Changes to reflect
correct signal naming have been incorporated.
correct signal naming have been incorporated.
Figure 5. GPIO Control Signals
7
SLVU410
–
April 2011
CPG005_DRV88xx Evaluation Modules
Copyright
©
2011, Texas Instruments Incorporated