Combine all battery failsafe configuration into COM_LOW_BAT_ACT to make the options very clear for the user

[MaEtUgR]

Solved Problem

After #25267 users are missing the bingo fuel feature because it's very hard to know/remember there's a separate parameter which doesn't even have the word battery in its description.

Solution

Combine battery failsafe configuration into COM_LOW_BAT_ACT. There are clear options to choose from and option 3 to have the full functionality stays the same such that previous users and airframes/products without any change stay like the originally worked.

Changelog Entry

Combine all battery failsafe configuration into COM_LOW_BAT_ACT to make the options very clear for the user

Test coverage

I couldn't test it yet. Would be nice to add efficient integration tests to constantly verify.

[github-actions]

❌ PR title needs conventional commit format

Expected format: type(scope): description (conventional commits).

Your title:

Combine all battery failsafe configuration into COM_LOW_BAT_ACT to make the options very clear for the user

Suggested fix:

feat(battery): combine all battery failsafe configuration into COM_LOW_BAT_ACT to make the options very clear for the user

To fix this: click the ✏️ next to the PR title at the top of this page and update it.

See CONTRIBUTING.md for details.

---

This comment will be automatically removed once the issue is resolved.

[github-actions]

🔎 FLASH Analysis

px4_fmu-v5x [Total VM Diff: -48 byte (-0 %)]

    FILE SIZE        VM SIZE    
--------------  -------------- 
+0.0%     +75  [ = ]       0    .debug_abbrev
-0.0%      -8  [ = ]       0    .debug_aranges
-0.0%     -28  [ = ]       0    .debug_frame
-0.0% -2.89Ki  [ = ]       0    .debug_info
-0.0%    -154  [ = ]       0    .debug_line
  [NEW]      +3  [ = ]       0    [Unmapped]
  -0.0%    -157  [ = ]       0    [section .debug_line]
-0.0%    -142  [ = ]       0    .debug_loclists
-0.0%      -4  [ = ]       0    .debug_rnglists
  [NEW]      +1  [ = ]       0    [Unmapped]
  -0.0%      -5  [ = ]       0    [section .debug_rnglists]
-0.0%   -1022  [ = ]       0    .debug_str
+1.3%      +3  [ = ]       0    .shstrtab
-0.0%     -51  [ = ]       0    .strtab
  [NEW]     +11  [ = ]       0    CSWTCH.821
  [DEL]     -11  [ = ]       0    CSWTCH.824
  [DEL]     -51  [ = ]       0    Failsafe::fromRemainingFlightTimeLowActParam()
   +36%     +16  [ = ]       0    ___ZL19param_get_cplusplustPf.isra.0_veneer
 -40.0%     -16  [ = ]       0    __stm32_dmastart_veneer
-0.0%     -32  [ = ]       0    .symtab
  [NEW]     +32  [ = ]       0    CSWTCH.821
  [DEL]     -32  [ = ]       0    CSWTCH.824
 -25.0%     -16  [ = ]       0    Commander::handleCommandActuatorTest()
  +100%     +16  [ = ]       0    Commander::updateParameters()
 -50.0%     -32  [ = ]       0    EKFGSF_yaw::fuseVelocity()
   +33%     +16  [ = ]       0    Failsafe::checkStateAndMode()
   +20%     +16  [ = ]       0    Failsafe::fromOffboardLossActParam()
  [DEL]     -32  [ = ]       0    Failsafe::fromRemainingFlightTimeLowActParam()
   +25%     +16  [ = ]       0    Failsafe::isFailsafeIgnored()
 -50.0%     -16  [ = ]       0    Failsafe::updateArmingState()
   +13%     +32  [ = ]       0    ___ZL19param_get_cplusplustPf.isra.0_veneer
 -40.0%     -32  [ = ]       0    __stm32_dmastart_veneer
+0.4%     +48  [ = ]       0    [Unmapped]
-0.0%     -48  -0.0%     -48    .text
   +52%     +48   +52%     +48    Failsafe::fromBatteryWarningActParam()
  +0.0%     +12  +0.0%     +12    g_cromfs_image
  [NEW]      +4  [NEW]      +4    CSWTCH.821
  +1.0%      +4  +1.0%      +4    EKFGSF_yaw::fuseVelocity()
  +3.2%      +2  +3.2%      +2    Failsafe::updateArmingState()
  [DEL]      -4  [DEL]      -4    CSWTCH.824
  -2.0%      -4  -2.0%      -4    Commander::updateParameters()
  -4.5%      -4  -4.5%      -4    FlightTask
  -0.0%      -8  -0.0%      -8    px4::parameters
  -5.3%     -12  -5.3%     -12    Failsafe::updateParamsImpl()
  -0.0%     -16  -0.0%     -16    [section .text]
  -4.4%     -20  -4.4%     -20    Failsafe::Failsafe()
  [DEL]     -50  [DEL]     -50    Failsafe::fromRemainingFlightTimeLowActParam()
-0.0% -4.22Ki  -0.0%     -48    TOTAL

px4_fmu-v6x [Total VM Diff: -96 byte (-0 %)]

    FILE SIZE        VM SIZE    
--------------  -------------- 
+0.0%     +75  [ = ]       0    .debug_abbrev
-0.0%      -8  [ = ]       0    .debug_aranges
-0.0%     -48  [ = ]       0    .debug_frame
-0.0% -2.83Ki  [ = ]       0    .debug_info
-0.0%    -218  [ = ]       0    .debug_line
  +100%      +1  [ = ]       0    [Unmapped]
  -0.0%    -219  [ = ]       0    [section .debug_line]
-0.0%    -190  [ = ]       0    .debug_loclists
-0.0%     -12  [ = ]       0    .debug_rnglists
  +200%      +2  [ = ]       0    [Unmapped]
  -0.0%     -14  [ = ]       0    [section .debug_rnglists]
-0.0% -1.01Ki  [ = ]       0    .debug_str
-0.0%     -52  [ = ]       0    .strtab
  [NEW]     +11  [ = ]       0    CSWTCH.821
  [DEL]     -11  [ = ]       0    CSWTCH.824
  [DEL]     -51  [ = ]       0    Failsafe::fromRemainingFlightTimeLowActParam()
  -0.0%      -1  [ = ]       0    do_not_explicitly_use_this_namespace::Param<>::update()
-0.0%     -32  [ = ]       0    .symtab
  [NEW]     +32  [ = ]       0    CSWTCH.821
  [DEL]     -32  [ = ]       0    CSWTCH.824
 -25.0%     -16  [ = ]       0    Commander::handleCommandActuatorTest()
  +100%     +16  [ = ]       0    Commander::updateParameters()
  +100%     +16  [ = ]       0    ConstLayer::containedAsBitset()
  +100%     +32  [ = ]       0    EKFGSF_yaw::fuseVelocity()
   +33%     +16  [ = ]       0    Failsafe::checkStateAndMode()
   +20%     +16  [ = ]       0    Failsafe::fromOffboardLossActParam()
  [DEL]     -32  [ = ]       0    Failsafe::fromRemainingFlightTimeLowActParam()
   +25%     +16  [ = ]       0    Failsafe::isFailsafeIgnored()
 -50.0%     -16  [ = ]       0    Failsafe::updateArmingState()
  -0.6%     -64  [ = ]       0    [section .symtab]
 -25.0%     -16  [ = ]       0    param_import_internal()
+1.4%     +96  [ = ]       0    [Unmapped]
-0.0%     -96  -0.0%     -96    .text
   +52%     +48   +52%     +48    Failsafe::fromBatteryWarningActParam()
  [NEW]      +4  [NEW]      +4    CSWTCH.821
  +4.8%      +4  +4.8%      +4    FlightTask
   +50%      +4   +50%      +4    Zero
  +0.0%      +4  +0.0%      +4    g_cromfs_image
 -96.8%      +2 -96.8%      +2    [1 Others]
  [DEL]      -4  [DEL]      -4    CSWTCH.824
  -2.0%      -4  -2.0%      -4    Commander::updateParameters()
  -5.6%      -4  -5.6%      -4    ConstLayer::containedAsBitset()
  -1.0%      -4  -1.0%      -4    EKFGSF_yaw::fuseVelocity()
  -1.8%      -4  -1.8%      -4    param_foreach
  -1.3%      -4  -1.3%      -4    param_hash_check
  -1.3%      -4  -1.3%      -4    param_load
  -0.9%      -4  -0.9%      -4    param_reset_excludes
  -0.2%      -4  -0.2%      -4    px4::parameters_type
  -0.0%      -8  -0.0%      -8    px4::parameters
  -5.3%     -12  -5.3%     -12    Failsafe::updateParamsImpl()
  -0.0%     -16  -0.0%     -16    [section .text]
  -4.4%     -20  -4.4%     -20    Failsafe::Failsafe()
  -4.5%     -20  -4.5%     -20    param_reset_specific
  [DEL]     -50  [DEL]     -50    Failsafe::fromRemainingFlightTimeLowActParam()
-0.0% -4.31Ki  -0.0%     -96    TOTAL

Updated: 2026-04-02T16:44:30

[github-actions]

No broken links found in changed files.