Difference between revisions of "API FCD.GetItemValue"
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| − | + | {| class="wikitable" style="width:60%; background-color:#FFFFFF;" | |
| − | Gets a paths item value from the FCD document | + | |- |
| + | | width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]] | ||
| + | | width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetItemValue''' | ||
| + | |- | ||
| + | | colspan="2" | Gets a paths item value from the FCD document | ||
| + | |- | ||
| + | |- | ||
| + | | width="10%" align="center" | [[File:Fc9-string-icon.png]] - STRING | ||
| + | | width="90%" | PathName | ||
| + | |- | ||
| + | | colspan="2" | The '.' separated path through the FCD to look in | ||
| + | |- | ||
| + | | width="10%" align="center" | [[File:Fc9-string-icon.png]] - STRING | ||
| + | | width="90%" | ItemName | ||
| + | |- | ||
| + | | colspan="2" | The name of the item to read | ||
| + | |- | ||
| + | | width="10%" align="center" | [[File:Fc9-string-icon.png]] - STRING | ||
| + | | width="90%" | DefText | ||
| + | |- | ||
| + | | colspan="2" | A default value to return if the item is not found | ||
| + | |- | ||
| + | | width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-string-icon.png]] - STRING | ||
| + | | width="90%" style="border-top: 2px solid #000;" | ''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". |
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| − | '' | + | If the ''ItemName'' is not found in the specified location then ''DefText'' will be returned instead. |
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| − | + | ==Examples== | |
| − | + | ===Calling in a calculation=== | |
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* Declare a variable 'result' of type STRING | * Declare a variable 'result' of type STRING | ||
| − | * Add to a calculation icon: result = ::FCD.GetItemValue("pathname", "itemname", "deftext") | + | * Add to a calculation icon: <pre class="brush:[cpp]">result = ::FCD.GetItemValue("pathname", "itemname", "deftext")</pre> |
Latest revision as of 11:55, 16 January 2023
|
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")
