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fix(bt): clarify BR/EDR TX power behavior in menuconfig help

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This commit is contained in:
chenqingqing
2026-07-02 17:08:01 +08:00
parent e42038bad2
commit 9fbebf293d
1 changed files with 22 additions and 0 deletions
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22
components/bt/porting_btdm/controller/bredr/Kconfig.in
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@@ -227,6 +227,13 @@ menu "TX Power Level settings"
help
Minimum BR/EDR transmission power level for ACL.
The transmission power for an ACL connection link will be affected by the following factors:
It must fall within the range of [`BT_CTRL_BR_EDR_TX_PWR_ACL_MIN`, `BT_CTRL_BR_EDR_TX_PWR_ACL_MAX`]
The initial TX power level for an ACL link is inherited from
`BT_CTRL_BR_EDR_TX_PWR_PAGE` (for Central) and `BT_CTRL_BR_EDR_TX_PWR_PSCAN` (for Peripheral).
If the power is lower than BT_CTRL_BR_EDR_TX_PWR_ACL_MIN, BT_CTRL_BR_EDR_TX_PWR_ACL_MIN will be used.
It can be adjusted in response to LMP power control request PDUs from the peer device.
config BT_CTRL_BR_EDR_TX_PWR_ACL_MAX
int "Default maximum TX power level for ACL"
default 4
@@ -234,6 +241,13 @@ menu "TX Power Level settings"
help
Maximum BR/EDR transmission power level for ACL.
The transmission power for an ACL connection link will be affected by the following factors:
It must fall within the range of [`BT_CTRL_BR_EDR_TX_PWR_ACL_MIN`, `BT_CTRL_BR_EDR_TX_PWR_ACL_MAX`]
The initial TX power level for an ACL link is inherited from
`BT_CTRL_BR_EDR_TX_PWR_PAGE` (for Central) and `BT_CTRL_BR_EDR_TX_PWR_PSCAN` (for Peripheral).
If the power is higher than BT_CTRL_BR_EDR_TX_PWR_ACL_MAX, BT_CTRL_BR_EDR_TX_PWR_ACL_MAX will be used.
It can be adjusted in response to LMP power control request PDUs from the peer device.
config BT_CTRL_BR_EDR_TX_PWR_APB
int "Default TX power level for APB"
depends on BT_CTRL_BR_EDR_APB_EN
@@ -248,6 +262,10 @@ menu "TX Power Level settings"
range -24 20
help
BR/EDR transmission power level for Page.
`BT_CTRL_BR_EDR_TX_PWR_PAGE` is recommended to fall within the ACL transmission power range
[`BT_CTRL_BR_EDR_TX_PWR_ACL_MIN`, `BT_CTRL_BR_EDR_TX_PWR_ACL_MAX`], because the Bluetooth controller
will try to use it as the initial TX power on the ACL link upon connection establishment from page
substate.
config BT_CTRL_BR_EDR_TX_PWR_PSCAN
int "Default TX power level for Page Scan"
@@ -255,6 +273,10 @@ menu "TX Power Level settings"
range -24 20
help
BR/EDR transmission power level for Page Scan.
`BT_CTRL_BR_EDR_TX_PWR_PSCAN` is recommended to fall within the ACL transmission power range
[`BT_CTRL_BR_EDR_TX_PWR_ACL_MIN`, `BT_CTRL_BR_EDR_TX_PWR_ACL_MAX`], because the Bluetooth controller
will try to use it as the initial TX power on the ACL link upon connection establishment from
page scan substate.
config BT_CTRL_BR_EDR_TX_PWR_ISCAN
int "Default TX power level for Inquiry Scan"