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Demo Examples
9.4
Demo 4: Write and Read Data in Memory
This demo shows how to read and write data into the TMS37157 memory. Basic commands are Read
Page and Write Page.
To use the Read Page command (see
Figure 26
):
1. Go to the Expert Mode tab in the RFID Demo Software.
2. Disconnect the jumper on the battery board (no battery supply).
3. On the Read Page field, choose the page to be read (for example, page 8).
4. Press the Read Page button.
In the Received Bytes field, the received data are shown (01 11 22 33 44 55 MSB).
The Page Unlocked field shows that this page is not locked and can be reprogrammed. If the page is
locked, programming is not possible.
Figure 26. Demo 4 - Read Page
To use the Write Page command:
1. In the Write Page field, enter the page to be programmed (for example, page 8) and the data (for
example, 01 02 03 04 05)
2. Press the Write Page button.
In the Received Bytes field, the received data is shown (01 02 03 04 05 MSB).
3. For validation, the Read Page command can be executed.
4. The same procedure as described for the Write Page can be used to lock pages.
The Page Unlocked field shows that this page can be reprogrammed. If the page is locked,
programming is not possible.
27
SLAU281B
–
November 2009
–
Revised March 2010
eZ430-TMS37157 Development Tool
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Copyright
©
2009
–
2010, Texas Instruments Incorporated
