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ITEM FILES
The item files contain the commands used to configure the system. The commands are simply added
to the file in the same format as the command line control utility. For clarity, multiple item files can be
included in the .json definition, each specifying a sub-set of commands relating to a particular function
or aspect. Example item files for common configurations are provided in the data-
partition/input directory of the release package. For example, the agc_bypass.txt item file
bypasses the AGC for both output channels contains the following commands:
SET_ADAPT_CH0_AGC 0
SET_ADAPT_CH1_AGC 0
SET_GAIN_CH0_AGC 1
SET_GAIN_CH1_AGC 1
4.2.2. GENERATING A DATA PARTITION FOR CUSTOM APPLICATIONS
It is recommended that in order to create a custom Data Partition, an existing set of .json and item files
is used as a template and modified as required. The release package contains example .json and item
files for this purpose.
NOTE: The following process requires the use of Python 3. Installation is covered in
section.
The required additional control commands should be stored in an appropriately named text file inside
the data-partition/input subdirectory. For example a file named aec_bypass.txt could be
added containing the collected commands:
SET_BYPASS_AEC 1
NOTE: Only commands which are required to be set with non-default values need to be included in
the item file list.
These text files are then included in the custom JSON description.
In the above example, the aec_bypass.txt is added to to a JSON description, bypass_AEC.json
as shown below:
...
"item_files": [
...
{
"path": "input/aec_bypass.txt",
"comment": ""
}
...
]
...
NOTE: Remember that the execution order of the commands and input files can affect the behaviour
of the device. For example, commands to configure USB and I
the data image.
Finally, to generate the custom data partition, the command below should be run from the data-
partition directory:
python3 xvf3510_data_partition_generator.py <build_type>.json
The generator script produces two data image files; one for factory programming and one for device
upgrade in a directory named output.
XM-014232-PC
Required Tools
2
S should be added at the beginning of
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