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[k32w0] Add OTA encryption info in contact sensor README #34257

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Jul 10, 2024
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[k32w0] Add OTA encryption info in contact sensor README #34257

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7 changes: 6 additions & 1 deletion examples/contact-sensor-app/nxp/k32w/k32w0/README.md
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Expand Up @@ -730,9 +730,14 @@ Please see more in the
Here is an example that generates an OTA image with application update TLV:

```
./scripts/tools/nxp/ota/ota_image_tool.py create -v 0xDEAD -p 0xBEEF -vn 42021 -vs "1.0" -da sha256 --app-input-file chip-k32w0x-contact-example.bin chip-k32w0x-contact-example.ota
./scripts/tools/nxp/ota/ota_image_tool.py create -v 0xDEAD -p 0xBEEF -vn 2 -vs "2.0" -da sha256 --enc_enable --input_ota_key "1234567890ABCDEFA1B2C3D4E5F6F1B4" --app-input-file chip-k32w0x-contact-example.bin chip-k32w0x-contact-example.ota
```

Please note the two options `--enc_enable` and `--input_ota_key`, which are
mandatory when `chip_with_ota_encryption=1`. The value of `--input_ota_key` must
match the value of `chip_with_ota_key`. See `args.gni` for the default gn
configuration.

A note regarding OTA image header version (`-vn` option). An application binary
has its own software version, given by
`CHIP_DEVICE_CONFIG_DEVICE_SOFTWARE_VERSION` (`42020` by default), which can be
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