Running the STMPE801 port expander GUI

UM0401

8/17

●

0x88. There are pull-down and pull-up resistors for the respective selection and these

can be enabled by shorting the headers as shown in Figure 8.

Figure 8.

●

JP6_3 and JP7_3: These jumpers are provided to isolate the STMPE801 chip from the

rest of the board for troubleshooting. They can also be used as test points to measure

jumpers should be shorted as shown in Figure 9.

Figure 9.

The board is ready to function after these jumper settings and the GPIOs can be accessed

through the different headers provided. Refer to Section 4 for the location of the various

jumpers on the board.

2

Running the STMPE801 port expander GUI

This port expander demo board consists of two main parts:

●

PC GUI

●

Demonstration board

The various jumpers on the board should be configured correctly before running the GUI.

In order to run the GUI, the demo board must first be connected to the PC with the DB-25

parallel port cable and the power supply of +5 V should be provided.

The user should login as administrator before running the GUI (STMPE801_DEMO.exe).

This file should be run from the same directory as the io.dll file.

When the GUI is successfully running, the startup screen resembles Figure 10. There are

four tab options for testing the various device functionalities as explained in the following

sections.