Disable NRF52 undervoltage bootlock feature - #2377
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The NRF52 undervoltage bootlock feature implemented behind NRF52_POWER_MANAGEMENT was introduced in v1.12. It configures a fixed voltage level of 3.3V and prevents the software from booting if the battery voltage is below that level. This is problematic for various reasons. The most important one being that it breaks devices that use cell chemistries other than Li-Ion, such as LFP, LTO or SIB which have much lower minimum voltages. As a quick fix to prevent devices from failing, disable the feature until it has been decided how to handle this in the future and a proper implementation has been provided. Signed-off-by: Frieder Schrempf <frieder@fris.de>
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@ripplebiz, @recrof - please have a look at this. |
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I have been disabled it since MC 1.13. |
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What is the status of this in V17? Also - any thoughts of harmonizing this with PR 2088? |
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@1nerdherder Currently, NRF52_POWER_MANAGEMENT is disabled in PowerSaving 17. |
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The NRF52 undervoltage bootlock feature implemented behind NRF52_POWER_MANAGEMENT was introduced in v1.12.
It configures a fixed voltage level of 3.3V and prevents the software from booting if the battery voltage is below that level.
This is problematic for various reasons. The most important one being that it breaks devices that use cell chemistries other than Li-Ion, such as LFP, LTO or SIB which have much lower minimum voltages.
As a quick fix to prevent devices from failing, disable the feature until it has been decided how to handle this in the future and a proper implementation has been provided.
This solves #1572.