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MCP215X/40 Developer’s Daughter Board User’s Guide
D.1.3
Palm PDA Demo using the AN888 Application Program
Application Note 888 supports doing Demo #3, the Data Logger (250 Byte) demo. For
this, the embedded system must be configured as in Figure D-7.
D.1.3.1
THE PALM PDA GUI
The GUI consists of a number of user-interface elements, including command buttons,
text labels and a text-entry field. Refer to Figure D-8.
FIGURE D-8:
2
4
PALM PDA MAIN FORM
1
3
5
6
7
9
Send File
8
1. The Connect button attempts to establish a connection to the MCP215X/40
Developer’s Daughter Board with the Palm PDA acting as the Primary device.
The label to the left of the button provides an indication of the connection.
2. The Read Data button sends a query to the demo board requesting the soda and
candy counter values. Received data is parsed and displayed.
3. The Clear Data button sends a command to the demo board instructing it to reset
the application level counters. The command to “Read Data” is then sent to
ensure that the registers were cleared.
4. The ASCII/HEX button toggles the application between ASCII and HEX modes.
This value is used when preparing and transmitting data to the IR demo board.
This is useful when there is a need to send a non-printable value, such as
low-order ASCII. For example, to send the value 0x03, use the keyboard or
Graffiti ? to enter “ 03 ” (without the quotes). This will be converted to 0x03 and
transmitted.
5. The Send button sends the data shown on the “TX Data” line. If HEX mode is
selected, minimal error-checking is performed.
6. The Show button causes a message box to be displayed that contains the
received buffer information.
7. The Reset button clears the Palm PDA application's receive data buffer.
8. The Send File button is used to send a file.
9. The 123 and ABC button opens a keyboard for data entry. The 123 button will
open the numeric keyboard, while the ABC button will open the alpha keyboard.
DS51591A-page 56
? 2006 Microchip Technology Inc.
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