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Manchester LLA - Support more modes


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Tim

Currently our Manchester LLA supports the following modes:
- Manchester
- Differential Manchester
- Bi-Phase Mark
- Bi-Phase Space

It would be nice to add support for other modes and variations, such as:
- Bi-Phase Line
- NRZ (M, S, and L)
- DALI

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Tim

Merged with: Support DALI protocol

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Saleae

To have Manchester analyzer updated so it can support DALI protocol decoding. DALI is made based on Manchester encoding, having a start bit (HIGH -> LOW -> HIGH) that should be ignored and 2 stop bits at the end that should be ignored too. See i.stack.imgur.com/sT7Tl.png


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Peter Jaquiery

There are lots of protocols that use Manchester encoding as their physical layer transport. Facilitating using HLAs with Manchester analyzers would unlock these. A HLA template for the job that recognized preamble patterns like the start bit mentioned above then pulled out fixed length blocks of bits would handle a lot of the common processing.

My own recent interest was decoding USB-C's PD communications across CC lines. Pulling that fully apart is a big job but could obviate the need for a dedicated PD analyzer.