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Using the GUI
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7.3 GUI Operation
The GUI automatically searches to see if the LaunchPad is connected upon startup and immediately
attempts to read the register values from the LaunchPad. If the message in
Figure 19 appears, the GUI
was unable to detect the LaunchPad and starts up without reading the registers. Ensure that the
LaunchPad is connected to the PC correctly.
Figure 19. MSP430 LaunchPad Warning Window
If there are no connection issues, try unplugging the LaunchPad and plugging it back in, since windows
sometimes encounters errors with COM Ports. Try to read from the device when the LaunchPad is
plugged back in, there is no need to restart the GUI. If not connected, the GUI tries to connect every time
a read or write is attempted on the LaunchPad. This allows the LaunchPad to be unplugged without
having to close the GUI.
If Auto Write on Click is enabled and a Reserved register bit in one of the R/W registers is clicked, the GUI
does not populate that bit as a ‘1’ in the register map. The GUI still writes the existing value to the register.
If
Auto Write on Click is disabled, nothing happens.
7.3.1 Using the TS3A227E-EVM On-Board Keys
Make sure nothing is inserted into the EVM jack.
1. Setup the jumpers on the EVM to the positions listed in Table 2 :
Table 2. Jumper Locations for On-Board Keys
Reference Designator Jumper Location
J2 Populated
J3 Pins 1-2
J12 Not Populated
J15 Populated
J16 Populated
J20 Populated
J22 Pins 7-8 only
No jumper on other pins
J24 Populated
J27 Pins 1-2
Pins 3-4
Pins 4-5
Pins 7-8
2. Enable the following switches by clicking on the appropriate bits in the GUI:
• S3GR
• S3PS
• RING2 GNDFET
• Manual switch control
3. Enable key press by pressing the Key Press Enable bit.
4. The GUI should now appear as shown in Figure 20 .
16 TS3A227E EVM User's Guide SLVUAD9 – December 2014
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