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Posted to commits@mynewt.apache.org by GitBox <gi...@apache.org> on 2020/10/21 12:17:13 UTC

[GitHub] [mynewt-nimble] Avamander opened a new issue #877: No documentation about Data Length Extension

Avamander opened a new issue #877:
URL: https://github.com/apache/mynewt-nimble/issues/877


   There's currently no documentation about Data Length Extension. 
   
   It is silly to list a feature on the front page of documentation that isn't documented in any normal way.


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[GitHub] [mynewt-nimble] sjanc commented on issue #877: No documentation about Data Length Extension

Posted by GitBox <gi...@apache.org>.
sjanc commented on issue #877:
URL: https://github.com/apache/mynewt-nimble/issues/877#issuecomment-849495761


   how was your investigation? any chances you could send PR with documentation update?


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[GitHub] [mynewt-nimble] Avamander commented on issue #877: No documentation about Data Length Extension

Posted by GitBox <gi...@apache.org>.
Avamander commented on issue #877:
URL: https://github.com/apache/mynewt-nimble/issues/877#issuecomment-719445773


   Will investigate and test out, thanks @haukepetersen.


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[GitHub] [mynewt-nimble] haukepetersen commented on issue #877: No documentation about Data Length Extension

Posted by GitBox <gi...@apache.org>.
haukepetersen commented on issue #877:
URL: https://github.com/apache/mynewt-nimble/issues/877#issuecomment-719428721


   Yes, it is indeed not easy to find. Take a look at `nimble/controller/syscfg.yml`:
   ```
       BLE_LL_CFG_FEAT_DATA_LEN_EXT:
           description: >
               This option enables/disables the data length update procedure in
               the controller. If enabled, the controller is allowed to change the
               size of tx/rx pdu's used in a connection. This option has only
               minor impact on code size and non on RAM.
           value: '1'
   ```
   And from my own experience, looking at 
   - `BLE_LL_MAX_PKT_SIZE`
   - `BLE_LL_CONN_INIT_MAX_TX_BYTES`, 
   - `BLE_LL_SUPP_MAX_RX_BYTES`
   - `BLE_LL_SUPP_MAX_TX_BYTES`
   
   will add to the picture and hopefully achieve the desired behavior?!


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