mallinfo().fordblks counts only free bytes within the committed arena.
On STM32WL (newlib sbrk heap) the arena grows lazily from _end toward SP,
so fordblks reads near-zero at early boot even when ~48 KB of addressable
space remains. This caused NodeDB::isFull() to fire prematurely and evict
nodes on a freshly booted device.
Fix getFreeHeap() to include uncommitted sbrk headroom (SP - sbrk(0)) so
the returned value reflects true available memory throughout the boot
lifecycle.
Introduce MESHTASTIC_DYNAMIC_SBRK_HEAP as an opt-in build flag (set in
stm32.ini) so the fix is gated to platforms with a dynamic sbrk heap
rather than a static heap. Future platforms with the same heap model can
opt in by adding this flag.
Signed-off-by: Andrew Yong <me@ndoo.sg>
Assisted-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Integrate STM32 battery monitoring into AnalogBatteryLevel, supporting
external GPIO ADC pins as well as internal VBAT channel.
Features:
- ADC reading using STM32 LL (Lower Layer) macros supporting external
ADC channels and internal VBAT channel (AVBAT)
- ADC compensation using STM32 LL macros with factory-calibrated VREFINT
(AVREF) for accurate voltage measurement
- LFP battery OCV curve for STM32WL using AVBAT (STM32 VDD absolute
maximum supply voltage 3.9V, direct connection of Li-Po batteries is
not supported)
Internal VBAT channel implemented in:
- Russell
- RAK3172
In these variants, ADC_MULTIPLIER = (1.01f * 3) = 3.30 as there is a
3:1 internal divider (DS13105 Rev 12 §5.3.21), and a bit of tolerance
as the actual 10% spec leads to readings much too high.
Assisted-by: Claude:sonnet-4-5
Signed-off-by: Andrew Yong <me@ndoo.sg>
To save resources, some devices where LR11x0 was never an option
excluded it from compilation, using RADIOLIB_EXCLUDE_LR11X0 .
As we will soon have LR2021 support, apply the same treatment
to that chip to these devices, by adding RADIOLIB_EXCLUDE_LR2021
This reverts commit 391928ed08.
Since esp32_https_server commit e2c9f98, this is no longer necessary.
Also, the esp32-common.ini '-include mbedtls/error.h' causes a build error
under IDF v5 (https://github.com/meshtastic/firmware/pull/9122#issuecomment-4185767085):
<command-line>: fatal error: mbedtls/error.h: No such file or directory
so this change fixes that error.
* fix MESHTASTIC_EXCLUDE_SCREEN
* mesh-tab map constraints (2 MB PSRAM)
* point MUI commit to the related PR
---------
Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
* Fix TAG low‑voltage reboot hang after App configuration
* nRF52: Move low-VDD System OFF logic to variant hook
* Addressed review
* serialize SAADC access with shared mutex for VDD and battery reads
* raise LPCOMP wake threshold to ensure rising-edge wake
* Trunk fmt
---------
Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
* Fix TAG low‑voltage reboot hang after App configuration
* nRF52: Move low-VDD System OFF logic to variant hook
* Addressed review
* serialize SAADC access with shared mutex for VDD and battery reads
* raise LPCOMP wake threshold to ensure rising-edge wake
* Trunk fmt
---------
Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
We cache and dedupe our dependencies, referring to them with multiple methods/urls is just noise.
```
lewisxhe/XPowersLib@0.3.3
lewisxhe/SensorLib@0.3.4
```
This does *not* include any updates, just a cleanup.
Problem:
- Inserting a µSD card causes RadioLib to hit a critical error and reboot
- Device enters a boot loop as the SD card remains inserted
Reproduction:
- Insert a µSD card and power on
- RadioLib reports a critical error on boot
- Device reboots, repeating indefinitely
Root cause:
- On T-Lora Pager, SX1262 and the µSD slot share the same physical SPI bus
(same SCK/MOSI/MISO pins, differentiated only by CS)
- SDCARD_USE_SPI1 is intended for boards where SD is on a separate SPI bus;
it initializes a second ESP32 SPI peripheral (SPI3) for SD
- SPI2 is already driving those same pins for LoRa, so both controllers
simultaneously drive the same GPIO lines, causing bus contention
Fix:
- Remove SDCARD_USE_SPI1 so both devices share a single SPI peripheral (SPI2),
with CS pins providing device selection as intended
- Tested on a custom fork of device-ui; LoRa and SD card map tiles both work
correctly with an SD card inserted
Signed-off-by: Andrew Yong <me@ndoo.sg>
Andrew YongandChloe Bethel
Tom FifieldandGitHub
AustinandGitHub
Catalin PatuleaandGitHub
TomandGitHub
Ethac.chenandBen Meadors
Chloe BethelandBen Meadors
Robert SasakandBen Meadors