Files
ruv a426ae386d Fix ADR-081 Timer Svc stack overflow on ESP32-S3
emit_feature_state() runs inside the FreeRTOS Timer Svc task via the
fast loop callback; it memsets an rv_feature_state_t, queries vitals/
radio, and sends via stream_sender (lwIP sendto). Default Timer Svc
stack is 2 KiB, which overflows and panics ~1 s after boot:

  ***ERROR*** A stack overflow in task Tmr Svc has been detected.

Bump CONFIG_FREERTOS_TIMER_TASK_STACK_DEPTH to 8 KiB across the three
sdkconfig defaults files (default, template, 4mb). Matches the main
task stack size already in use.

Found during on-device validation on ESP32-S3 (MAC 3c:0f:02:e9:b5:f8)
after flashing the post-merge v0.6.1 build — firmware boots, connects
WiFi, emits one medium tick, then crashes on the fast tick that calls
emit_feature_state().

Follow-up: consider moving emit_feature_state + network I/O out of the
timer daemon into a dedicated worker task (open issue).

Co-Authored-By: claude-flow <ruv@ruv.net>
2026-04-20 10:48:21 -04:00

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# ESP32-S3 CSI Node — 4MB Flash SDK Configuration (issue #265)
# For boards with 4MB flash (e.g. ESP32-S3 SuperMini 4MB).
#
# Build: cp sdkconfig.defaults.4mb sdkconfig.defaults && idf.py set-target esp32s3 && idf.py build
# Or: idf.py -D SDKCONFIG_DEFAULTS="sdkconfig.defaults.4mb" set-target esp32s3 && idf.py build
CONFIG_IDF_TARGET="esp32s3"
# 4MB flash partition table
CONFIG_PARTITION_TABLE_CUSTOM=y
CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions_4mb.csv"
CONFIG_ESPTOOLPY_FLASHSIZE_4MB=y
CONFIG_ESPTOOLPY_FLASHSIZE="4MB"
# Compiler: optimize for size (critical for 4MB)
CONFIG_COMPILER_OPTIMIZATION_SIZE=y
# CSI support
CONFIG_ESP_WIFI_CSI_ENABLED=y
# Disable display support to save flash (ADR-045 display requires 8MB)
# CONFIG_DISPLAY_ENABLE is not set
# Reduce logging to save flash
CONFIG_BOOTLOADER_LOG_LEVEL_WARN=y
CONFIG_LOG_DEFAULT_LEVEL_INFO=y
CONFIG_LWIP_SO_RCVBUF=y
CONFIG_ESP_MAIN_TASK_STACK_SIZE=8192
# ADR-081: adaptive_controller runs emit_feature_state + stream_sender
# network I/O inside Timer Svc callbacks, exceeding the 2 KiB default.
CONFIG_FREERTOS_TIMER_TASK_STACK_DEPTH=8192