The linker script was created by merging variants/STM32WLxx/WL54JCI_WL55JCI_WLE4J(8-B-C)I_WLE5J(8-B-C)I/ldscript.ld and system/ldscript.ld from stm32duino/Arduino_Core_STM32.
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>
* Fix heap blowout on TBeams
* Update src/graphics/draw/MessageRenderer.cpp
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Set MESSAGE_HISTORY_LIMIT to 10 for original ESP32 to optimize RAM usage
* Optimize message frame allocation to prevent excessive memory usage
* Refine message history limits for resource-constrained builds and cap cached lines to prevent heap overflow
* Update src/graphics/draw/MessageRenderer.cpp
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---------
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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
* fix(native): implement BinarySemaphorePosix with proper pthread synchronization
The BinarySemaphorePosix class (used on all Linux/portduino/native builds)
had stub implementations: give() was a no-op and take() just called
delay(msec) and returned false. This broke the cooperative thread scheduler
on native platforms — threads could not wake the main loop, radio RX
interrupts were missed, and telemetry never transmitted over the mesh.
Replace the stubs with a proper binary semaphore using pthread_mutex_t +
pthread_cond_t + bool signaled:
- take(msec): pthread_cond_timedwait with CLOCK_REALTIME timeout, consumes
signal atomically (binary semaphore semantics)
- give(): sets signaled=true, signals condition variable
- giveFromISR(): delegates to give(), sets pxHigherPriorityTaskWoken
Tested on Raspberry Pi 3 Model B (ARM64, Debian Bookworm) with Adafruit
LoRa Radio Bonnet (SX1276). Before fix: no radio TX/RX, no telemetry on
mesh. After fix: bidirectional LoRa, MQTT gateway, telemetry all working.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* ARCH_PORTDUINO
* Refactor BinarySemaphorePosix header for ARCH_PORTDUINO
* Change preprocessor directive from ifndef to ifdef
* Gate new Semaphore code to Portduino and fix STM compilation
* Binary Semaphore Posix better error handling
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
Co-authored-by: Jonathan Bennett <jbennett@incomsystems.biz>
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.
* Add powerlimits to reconfigured radio settings as well as init settings.
* Refactor preamble length handling for wide LoRa configurations
* Moved the preamble setting to the main class and made the references static
MQTT password was logged in cleartext via LOG_INFO when connecting to
the broker, exposing credentials to anyone with log access. Replace
the password format specifier with a static mask.
Co-authored-by: Patrickschell609 <patrickschell609@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Chloe BethelandChloe Bethel
Andrew YongandChloe Bethel
Jennifer SanchezandGitHub
Thomas GöttgensandBen Meadors
Tom FifieldandGitHub
AustinandGitHub
Catalin PatuleaandGitHub
TomandGitHub
