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CRC Operations dialog box
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This dialog box is used to set the CRC operation.
Figure A.10 | CRC Operations Dialog Box |
The following items are explained here.
[How to open]
- | On the Property panel, select the following property, and then click the [...] button. |
[Description of each area]
(1) | Output address list area |
A list of output addresses is displayed.
The output address is a key for recognizing multiple CRC operation settings.
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Add
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Opens the Character String Input dialog box.
The address specified in the dialog box is appended to the end of a list of output addresses.
The address is entered as a hexadecimal value from 0 to FFFFFFFE.
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Remove
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Deletes the selected output address from the list.
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Edit
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Opens the Character String Input dialog box to change the output address selected in the list.
The address is entered as a hexadecimal value from 0 to FFFFFFFE.
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(2) | [CRC operation property] area |
Displays and sets the properties of the CRC operation for the output address selected in the Output address list area.
The detailed information on CRC operation is displayed and the configuration can be changed.
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Target range
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Specify the CRC calculation range in the format of "start address - end address" or "section name".
Specify the address in hexadecimal without 0x.
The range of specifiable address values is 0 to FFFFFFFF.
This property corresponds to the -CRc option of the rlink command.
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Default
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Blank
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How to change
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Edit by the Text Edit dialog box which appears when clicking the [...] button.
For the subproperty, you can enter directly in the text box.
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Restriction
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Up to 32767 characters
Up to 65535 items can be specified.
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Type of CRC
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Select the method of CRC operation.
See the user's manual of the device and "CC-RH Compiler User's Manual" for details about each operation.
This property corresponds to the -CRc option of the rlink command.
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Default
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32-ETHERNET type
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How to change
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Select from the drop-down list.
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Restriction
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CRC-CCITT(MSB) type
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Outputs the calculation result of CRC-16-CCITT-MSB first operation.
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CRC-CCITT(MSB,LITTLE,4 bytes) type
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Outputs the calculation result of CRC-16-CCITT-MSB first operation with the input specified as 4-byte units in little-endian mode.
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CRC-CCITT(MSB,LITTLE,2 bytes) type
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Outputs the calculation result of CRC-16-CCITT-MSB first operation with the input specified as 2-byte units in little-endian mode.
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32-ETHERNET type
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Outputs the calculation result of CRC-32-ETHERNET operation.
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CCITT type
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Outputs the calculation result of CRC-16-CCITT-MSB first operation with an initial value of 0xffff and inverse of XOR.
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CRC-CCITT(LSB) type
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Outputs the calculation result of CRC-16-CCITT-LSB first operation.
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16
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Outputs the calculation result of CRC-16-LSB first operation.
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SENT(MSB) type
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Outputs the calculation result of operation conforming to SENT.
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Initial value
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Specify the initial value for the CRC operation in the format of "initial value".
This property corresponds to the -CRc option of the rlink command.
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Default
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Blank
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How to change
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Directly enter to the text box.
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Restriction
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- | When other than [32-ETHERNET type] is selected in the [Type of CRC] property |
0 to FFFF (hexadecimal number)
- | When [32-ETHERNET type] is selected in the [Type of CRC] property |
0 to FFFFFFFF (hexadecimal number)
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Endian
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Select the endian for CRC output.
This property corresponds to the -CRc option of the rlink command.
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Default
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Little endian
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How to change
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Select from the drop-down list.
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Restriction
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Little endian
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Outputs the value in little-endian mode.
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Big endian
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Outputs the value in big-endian mode.
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Output size
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Specify the output size for the CRC code.
This property corresponds to the -CRc option of the rlink command.
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Default
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Blank
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How to change
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Directly enter to the text box.
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Restriction
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2, 4, or blank
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[Function Buttons]
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OK
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Reflects the settings to the property that opened this dialog box and closes this dialog box.
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Cancel
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Cancels the settings and closes this dialog box.
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Help
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Displays the help of this dialog box.
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