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PG-FP5 V2.13 PROGRAMMING GUI USAGE
R20UT2924EJ0200 Rev.2.00 Page 31 of 71
Mar 02, 2015
(7) [Checksum] command
The [Checksum] command displays the checksum in the target device in the action log window. As the calculation
method, either 32-bit addition or 32-bit CRC can be selected. For more information, refer to 1.3.3 (14)(b).
Note The checksum read by this command differs from the one displayed in the [File checksum] area in the
programmer parameter window. For details on the [File checksum] area, refer to 1.3.1 (3) [Checksum]
command.
The checksum is calculated as follows. Note that this is the result when the [Enable Checksum Compare Function]
check box of the FP5 manager dialog box is not selected.
Method: Subtraction (32-bit arithmetic (addition))
Range: The whole of areas (user, data, and user boot areas) selected in the [Operation Area] area on the [Advanced]
tab in the Device Setup dialog box
Note If at least one block of an area is selected, the entire area is subjected to calculation.
>sum
Code flash: 0x0FF169A0
User Boot area: 0x007F8000
Data flash: 0x003FF1D9
Total: 0x10B0DB79
PASS
Checksum operation finished.
>
Figure 1.41 Action Log Window After [Checksum] Command Execution
Note With the 32-bit arithmetic (Addition) mode, the lower 8 digits of the result from which a value is subtracted from
00h in 1-byte units are displayed.
Method: 32-bit CRC
Range: Area set in the [Operation Area] area on the [Advanced] tab in the Device Setup dialog box
>sum
Code flash: 0xA19FB353
User Boot area: 0x42A83D27
Data flash: 0x1D047738
Total: 0x014C67B2
PASS
Checksum operation finished.
>
Figure 1.42 Action Log Window After [Checksum] Command Execution
Note 32-bit CRC displays the 8-digit result of CRC32 function operation. For the calculation specifications, refer to
Common APPENDIX B SUPPLEMENTARY INFORMATION Figure B.2 32-bit CRC Calculation Specifications.