API FCD.GetItemValue: Difference between revisions
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| width="90%" | | width="90%" class="mtx-class-macrohead" | '''GetItemValue''' | ||
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| colspan="2" | Gets a paths item value from the FCD document | | colspan="2" | Gets a paths item value from the FCD document | ||
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* Declare a variable 'result' of type STRING | * Declare a variable 'result' of type STRING | ||
* Add to a calculation icon: <pre class="brush:[cpp]">result = ::FCD.GetItemValue("pathname", "itemname", "deftext")</pre> | * Add to a calculation icon: <pre class="brush:[cpp]">result = ::FCD.GetItemValue("pathname", "itemname", "deftext")</pre> | ||
Latest revision as of 14:11, 13 July 2026
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GetItemValue |
| Gets a paths item value from the FCD document | |
 - STRING
|
PathName |
| The '.' separated path through the FCD to look in | |
| - STRING
|
ItemName |
| The name of the item to read | |
| - STRING
|
DefText |
| A default value to return if the item is not found | |
| - STRING
|
Return |
Detailed description
FCD files are XML files. The PathName must be a list of items, not including the XML root tag of the tags where the XML attribute ItemName is to be located. So to extract the FLASH memory size Pathname="device.memory" and ItemName="bytes".
If the ItemName is not found in the specified location then DefText will be returned instead.
Examples
Calling in a calculation
- Declare a variable 'result' of type STRING
- Add to a calculation icon:
result = ::FCD.GetItemValue("pathname", "itemname", "deftext")