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Define a new Format
Chris Thompson edited this page Mar 21, 2020
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FoxTelem decodes fixed length frames that are encoded with Reed Solomon Forward Error correction. It has to know in advance how long a frame is before it can be decoded. It also needs to know how to find the FoxId. The other details of the frame layout are then defined in the Spacecraft File.
Format files have the extension .format and are stored in the spacecraft directory. As of version 1.09e the available formats are hard coded into FoxTelem and are selectable from the Input Tab. In future we will make all .format files in the spacecraft folder automatically available for selection.
The .format file is a Java Properties File. Each row contains a key and value.
It has the following rows:
| Key | Value | Description |
|---|---|---|
| name | String | |
| mode | String | |
| bps | Integer | Number of bits per second |
| frame_length | Integer | |
| data_length | Integer | |
| header_length | Integer | |
| header_layout_file | String | |
| trailer_length | Integer | |
| word_length | Integer | |
| sync_word_length | Integer | |
| rs_words | Integer | |
| rs_padding | CSV list of Integers |