# HLA as Input Analyzer (for other HLA)

**URL:** <https://discuss.saleae.com/t/hla-as-input-analyzer-for-other-hla/2663>\
**Category:** Extensions\
**Created:** [January 15, 2024, 7:59pm UTC](https://discuss.saleae.com/t/hla-as-input-analyzer-for-other-hla/2663 "2024-01-15T19:59:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sebastian7967](https://avatars.discourse-cdn.com/v4/letter/s/ba8739/32.png) [@Sebastian7967](https://discuss.saleae.com/u/Sebastian7967)\
**Post date:** [January 15, 2024, 7:59pm UTC](https://discuss.saleae.com/t/hla-as-input-analyzer-for-other-hla/2663/1 "2024-01-15T19:59:30Z")

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Hi,

is it possible to set a (custom) HighLevelAnalyzer as the Input Analyzer of another HighLevelAnalyzer?

E.g. process a stream of bytes by the Async Serial analyzer. These bytes are decoded by some custom HLA. The produced frames are then decoded further by another HLA: Async Serial → HLA1 → HLA2.

I tried the HLA py code from the example, but I can only select the Async Serial analyzer as Input Analyzer (not the other analyzer).

Thanks!  
Sebastian

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**Author:** ![timreyes](https://yyz2.discourse-cdn.com/flex030/user_avatar/discuss.saleae.com/timreyes/32/108_2.png) [@timreyes](https://discuss.saleae.com/u/timreyes)\
**Post date:** [January 16, 2024, 12:04am UTC](https://discuss.saleae.com/t/hla-as-input-analyzer-for-other-hla/2663/2 "2024-01-16T00:04:40Z")

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Unfortunately, this is not possible at the moment. Having said that, we’re tracking this feature request below. Feel free to add your vote to it!

> **[HLA - Support Input from another HLA - Logic 2 - Ideas and Feature Requests -...](https://ideas.saleae.com/b/feature-requests/hla-support-input-from-another-hla/)**
>
> enable a hla to use another hla as input, so the stream parser could be used by another hla data layer which will only use the information: packet start, packet type data.data ... and show only an higher layer of the data interpretation.

I’ve added a link to the feature request post above to your forum post here so we can remember your need for this feature.
