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Disable NRF52 undervoltage bootlock feature

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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>
This commit is contained in:
Frieder Schrempf committed 2026-04-22 19:56:57 +02:00
1 parent 5372388e6e
commit 3984b872ca
11 files changed
-11
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variants/gat562_30s_mesh_kit/platformio.ini
-1
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@@ -7,7 +7,6 @@ build_flags = ${nrf52_base.build_flags}
-I variants/gat562_30s_mesh_kit
-D RAK_4631
-D RAK_BOARD
-D NRF52_POWER_MANAGEMENT
-D PIN_BOARD_SCL=14
-D PIN_BOARD_SDA=13
-D PIN_OLED_RESET=-1
variants/gat562_mesh_evb_pro/platformio.ini
-1
View File
@@ -5,7 +5,6 @@ board_check = true
build_flags = ${nrf52_base.build_flags}
${sensor_base.build_flags}
-I variants/gat562_mesh_evb_pro
-D NRF52_POWER_MANAGEMENT
-D PIN_BOARD_SCL=14
-D PIN_BOARD_SDA=13
-D RADIO_CLASS=CustomSX1262
variants/gat562_mesh_tracker_pro/platformio.ini
-1
View File
@@ -5,7 +5,6 @@ board_check = true
build_flags = ${nrf52_base.build_flags}
${sensor_base.build_flags}
-I variants/gat562_mesh_tracker_pro
-D NRF52_POWER_MANAGEMENT
-D PIN_BOARD_SCL=14
-D PIN_BOARD_SDA=13
-D PIN_OLED_RESET=-1
variants/gat562_mesh_watch13/platformio.ini
-1
View File
@@ -8,7 +8,6 @@ build_flags = ${nrf52_base.build_flags}
-I variants/gat562_mesh_watch13
-D RAK_4631
-D RAK_BOARD
-D NRF52_POWER_MANAGEMENT
-D PIN_BOARD_SCL=14
-D PIN_BOARD_SDA=13
-D PIN_OLED_RESET=-1
variants/heltec_t096/platformio.ini
-1
View File
@@ -9,7 +9,6 @@ build_flags = ${nrf52_base.build_flags}
-I variants/heltec_t096
-I src/helpers/ui
-D HELTEC_T096
-D NRF52_POWER_MANAGEMENT
-D P_LORA_DIO_1=21
-D P_LORA_NSS=5
-D P_LORA_RESET=16
variants/heltec_t114/platformio.ini
-1
View File
@@ -12,7 +12,6 @@ build_flags = ${nrf52_base.build_flags}
-I variants/heltec_t114
-I src/helpers/ui
-D HELTEC_T114
-D NRF52_POWER_MANAGEMENT
-D P_LORA_DIO_1=20
-D P_LORA_NSS=24
-D P_LORA_RESET=25
variants/muziworks_r1_neo/platformio.ini
-1
View File
@@ -7,7 +7,6 @@ build_flags = ${nrf52_base.build_flags}
-I variants/muziworks_r1_neo
-I src/helpers/ui
-D R1Neo
-D NRF52_POWER_MANAGEMENT
-D RADIO_CLASS=CustomSX1262
-D WRAPPER_CLASS=CustomSX1262Wrapper
-D LORA_TX_POWER=22
variants/rak3401/platformio.ini
-1
View File
@@ -6,7 +6,6 @@ build_flags = ${nrf52_base.build_flags}
${sensor_base.build_flags}
-I variants/rak3401
-D RAK_3401
-D NRF52_POWER_MANAGEMENT
-D RADIO_CLASS=CustomSX1262
-D WRAPPER_CLASS=CustomSX1262Wrapper
-D LORA_TX_POWER=22
variants/rak4631/platformio.ini
-1
View File
@@ -7,7 +7,6 @@ build_flags = ${nrf52_base.build_flags}
-I variants/rak4631
-D RAK_4631
-D RAK_BOARD
-D NRF52_POWER_MANAGEMENT
-D PIN_BOARD_SCL=14
-D PIN_BOARD_SDA=13
-D PIN_GPS_TX=PIN_SERIAL1_RX
variants/sensecap_solar/platformio.ini
-1
View File
@@ -10,7 +10,6 @@ build_flags = ${nrf52_base.build_flags}
-I src/helpers/nrf52
-D NRF52_PLATFORM=1
-D USE_SX1262
-D NRF52_POWER_MANAGEMENT
-D RADIO_CLASS=CustomSX1262
-D WRAPPER_CLASS=CustomSX1262Wrapper
-D P_LORA_TX_LED=11
variants/xiao_nrf52/platformio.ini
-1
View File
@@ -9,7 +9,6 @@ build_flags = ${nrf52_base.build_flags}
-I variants/xiao_nrf52
-UENV_INCLUDE_GPS
-D NRF52_PLATFORM
-D NRF52_POWER_MANAGEMENT
-D XIAO_NRF52
-D USE_SX1262
-D RADIO_CLASS=CustomSX1262