BLE Controller Core Spec 5.2 Power Control Feature
I am working on the LE power control feature of Core Spec 5.2. I am almost 60-70% done defining the air-messages and the state machine within the llcp and he actions/behavior upon receiving PWR_CTRL_REQ/RSP or a related REJ. Also, not currently handling PWR_CTRL_IND and this should come later I guess. Feature still untested but it is in the pipeline.
Main issues now are:
1) Handling the APR (acceptable power reduction) in the PWR_CTRL_RSP
2) Insuring there are no leaks or any PWR_CTRL received pdu not released
3) Issuing command to change PHY TX power (I used the same method as in the host based TX power that this PR https://github.com/zephyrproject-rtos/zephyr/pull/19779 is addressing which seems to only change the connection TX power in the connection record and I guess the radio manager will then somehow use that to control the PHY?)
4) Overall testing. I need help here from the Zephyr Bluetooth developers.
Since this is my first potential contribution to Zephyr, I am following the contribution guidelines by posting in the mailing list to discuss the feature before proceeding with a pull request.
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