December 2010 Doc ID 16041 Rev 1 1/18
UM0757
User manual
S-Touch™ tuning window PC GUI over STEVAL-PCC009V1
1 Introduction
This user manual explains the functions of the S-Touch™ tuning graphical user interface
(GUI) over the STM32x-based STEVAL-PCC009V1 universal USB to serial communication
interface (UUSCI). For details regarding the UUSCI demonstration board, please refer to
UM0726.
The objective of this user manual is to demonstrate how to use this GUI for the hardware
tuning of S-Touch device-based touch boards (STMPE1208S and STMPE821).
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Contents UM0757
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Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Package contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Software installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Hardware installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.5 Running the S-Touch tuning GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Using the S-Touch tuning window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Selection of S-Touch devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 Connecting the board through the GUI . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3 Opening the channel window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4 Step 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.5 Freezing the selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.6 Step 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.7 Step 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.8 Step 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
UM0757 List of figures
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List of figures
Figure 1. Installation Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 2. License Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3. Destination folder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 4. Installation ongoing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 5. Installation complete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 6. Enumeration result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 7. Tuning window GUI menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 8. Board is not connected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 9. Board is connected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 10. S-Touch tuning window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 11. Selection of appropriate S-Touch device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 12. Connecting the board through the GUI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 13. Connecting the board through the GUI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 14. Opening the channel window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 15. Channel window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 16. Making the selection (check/uncheck) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 17. Log file creation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 18. Freeze state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 19. Step 1 output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 20. Step 1 non-zero output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 21. Step 2 output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 22. Step 3 output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
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2 Getting started
2.1 System requirements
In order to use the S-Touch tuning window GUI, a recent version of Windows©, such as
Windows 2000 or Windows XP must be installed on the PC.
The version of the Windows OS installed on the PC may be determined by clicking on the
“System” icon in the control panel.
2.2 Package contents
The S-Touch tuning window consists of the following items:
●Software content:
– S-Touch tuning GUI software to be used along with the demonstration board
●Hardware content:
– This GUI uses the STEVAL-PCC009V1 demonstration board
●Documentation:
–User manual
– Help file
2.3 Software installation
To install the PC GUI software, follow the steps below:
●Step 1: as soon as the setup.exe icon is clicked, the following window appears:
Figure 1. Installation Window
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●Step 2: read the license file and click the “Yes” button if accepted.
Figure 2. License Window
●Step 3: select the folder in which the software is to be installed. By default it installs the
software in the following path - C:\....\STMicroelectronics\Universal Dongle GUI.
Figure 3. Destination folder
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●Step 4: after selecting the folder and clicking the “Next” button, the software starts
installing.
Figure 4. Installation ongoing
Figure 5. Installation complete
After clicking the “Finish” button, the software has been installed in the directory selected or
in the default directory. The shortcut for this software is available in the Start menu. This
user manual is also available in the same directory.
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2.4 Hardware installation
Please refer to the UM0726 user manual for information regarding STEVAL-PCC009V1.
2.5 Running the S-Touch tuning GUI
To run the S-Touch tuning window, it’s necessary to use the STEVAL-PCC009V1
demonstration board. Please connect the demonstration board to the PC with the USB mini
B-type cable.
As a result, the demonstration board should be enumerated as universal serial bus
controllers and is shown as “universal dongle demo board” in the device manager window,
as shown in Figure 6. If this message does not appear, please contact technical support.
Figure 6. Enumeration result
When starting the tuning GUI on the PC, a graphical interface (Figure 7) for controlling the
demonstration board is seen. This PC software is used to issue various commands and to
control data transfer.
Figure 7. Tuning window GUI menu
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You can check whether the board is connected or not by clicking the connection check
button. If the board is not connected the following message appears:
Figure 8. Board is not connected
If the board is connected the following message appears:
Figure 9. Board is connected
Once this is done, the PC GUI is properly connected to the demonstration board and ready
for use.
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3 Using the S-Touch tuning window
After completing the steps to run the S-Touch tuning GUI (shown in Section 3), the following
GUI opens.
Figure 10. S-Touch tuning window
Follow these steps (listed) to fine tune a daughterboard.
●Selection of S-Touch devices
●Connecting the board through the GUI
●Opening of channel window
●Step 0
●Freezing the selection and unit factor
●Step 1
●Step 2
●Step 3
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3.1 Selection of S-Touch devices
Figure 11. Selection of appropriate S-Touch device
Select the appropriate daughterboard that is to be tuned before connecting the board
through the GUI.
3.2 Connecting the board through the GUI
The board can be connected through the GUI in either of the following two ways.
Figure 12. Connecting the board through the GUI
Figure 13. Connecting the board through the GUI
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3.3 Opening the channel window
Figure 14. Opening the channel window
The channel window, which assists in fine tuning the board, can be opened from here. The
channel window appears as follows:
Figure 15. Channel window
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3.4 Step 0
In this step it’s possible to select the channels to be tuned. For instance, if just three
channels are to be tuned, uncheck all the other channels except channel one, two and three.
Once done, the user can proceed to freeze the selection as well as the entered unit factor
for the selected board.
Figure 16. Making the selection (check/uncheck)
Figure 16 depicts the selection of the channels to be tuned. In this example, the first three
channels of STMPE1208S are to be tuned. Therefore, the respective channels are checked
and the unit factor is entered for STMPE1208S. The user can then proceed to freeze this
selection by clicking on the freeze button.
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3.5 Freezing the selection
Freeze the selection by clicking on the freeze button. When the button is green it indicates
that it is enabled and when red it indicates that it is completed and disabled. On freezing, the
GUI asks the user whether to create the log file or not. The user can enter the path where
the file is to be created, as shown below:
Figure 17. Log file creation
The GUI appears as follows on freezing:
Figure 18. Freeze state
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3.6 Step 1
The purpose of step 1 is to set the impedance values as non-zero. To do this, the GUI
guides the user when adding some capacitance on the CREF of the attached daughterboard.
The user can then mount that capacitance value on the CREF and re-attach the board. The
GUI then gives the channel reading after mounting the capacitance. If any channel value is
still non-zero, it asks the user to repeat step 1. Once the values are non-zero, step 1 is
disabled (indicated in red) and the next step to be executed is enabled (indicated in green).
Figure 19. Step 1 output
This shows that the minimum capacitance the user should add is 3.6 pF, and if the capacitor
of value 3.6 pF is not available, the user can set the capacitance value up to 3.6 +1.3 pF.
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3.7 Step 2
Step 2 guides the user when adding capacitances to the individual channels to bring the
channel values to default level. The capacitance to be added to each channel is displayed
under the CC column. For instance, the capacitance values for STMPE821 touch channels,
after step 1, become non-zero, as shown in Figure 20:
Figure 20. Step 1 non-zero output
As shown, the user can now proceed to step two, as step one output has become non-zero.
The step 2 button turns green which means it's enabled.
Figure 21. Step 2 output
In this case the CC value is zero, therefore it’s not necessary to mount any capacitance on
the individual channels. Step 3 is now enabled.
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3.8 Step 3
In step 3, the value for REF_DELAY is calculated and logged into the log file, created for
user reference. It guides the user when mounting capacitance on channels to bring their
values in range.
Figure 22. Step 3 output
In this step, the GUI continues referring the channel capacitances to be added until the
channel values are in range. When all the channel values are in the desired range for tuning,
the process is completed and the user can then close the application.
Finally, the user can refer to the log file, created during the tuning process, to know the
various tuning parameters for the respective daughterboard.
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4 Revision history
Table 1. Document revision history
Date Revision Changes
10-Dec-2010 1 Initial release.
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