mirror of https://github.com/esphome/esphome.git synced 2026-06-24 16:38:43 +00:00

Files

J. Nick Koston 6b67224286 [core] Chunk setup() into per-component noinline IIFEs

Generated setup() is a single monolithic function whose stack frame
scales super-linearly with config size. On a 5,943-line apollo build
the frame reached 1,264 B at -Os; extrapolation onto larger configs
(e.g. the 16k-line LVGL config in #15796) plausibly overflows the
8 KB loop task stack before safe_mode can increment its boot counter.

Emit a ComponentMarker sentinel at the start of each component's
to_code output, then have cpp_main_section wrap each component's
block (and sub-splits of up to 50 statements within each block) in a
noinline IIFE lambda. Each lambda's ENTRY frame is released on
return, bounding peak stack to setup() frame + max chunk frame.

Measured on apollo-r-pro-1-eth (esp32-s3, -Os):

  setup() frame        1264 B  ->  160 B
  max chunk frame      n/a     ->  144 B
  peak setup stack     1264 B  ->  304 B  (-76%)
  total flash      792,471 B   ->  791,995 B  (-476 B)

The brace-depth guard in _wrap_in_noinline_iifes ensures we never
split between the RawStatement("{") / RawStatement("}") pair emitted
by cg.with_local_variable() (currently only wifi), so scoped locals
stay intact.

2026-04-17 15:06:41 -05:00

benchmarks

[core] Add uint32_to_str helper and use in preferences (#15597 )

2026-04-14 07:49:44 -10:00

component_tests

[mipi_spi] Drawing fixes for native display (#15802 )

2026-04-17 21:17:16 +10:00

components

[core] Fix DelayAction compile error with non-const reference args (#15814 )

2026-04-17 14:31:31 +00:00

dashboard

[dashboard] Handle malformed Basic Auth headers gracefully (#13866 )

2026-02-09 08:45:03 -06:00

integration

[core] coerce set_interval(0) / update_interval: 0ms to 1ms (#15799 )

2026-04-17 02:45:50 -10:00

script

[ci] move import to function (#15440 )

2026-04-05 19:17:52 -04:00

test_build_components

[emontx] emonTx component (#9027 )

2026-04-07 22:29:55 +00:00

test_packages

YAML linting (#3779 )

2022-09-06 15:48:01 +12:00

unit_tests

[core] Chunk setup() into per-component noinline IIFEs

2026-04-17 15:06:41 -05:00

__init__.py

[mipi_spi] Template code, partial buffer support (#9314 )

2025-07-16 11:05:27 +10:00

.gitignore

Rename esphomeyaml to esphome (#426 )

2019-02-13 16:54:02 +01:00

custom.h

Add attribute support to Home Assistant sensors (#1770 )

2021-05-17 11:16:22 +12:00

dummy_main.cpp

[logger] Move task log buffer storage to BSS (#15153 )

2026-03-25 00:52:37 +00:00

pnglogo.png

Add transparency support to all image types (#4600 )

2023-05-22 08:03:21 +12:00

README.md

Wireguard component (#4256 )

2023-09-12 07:13:24 +12:00

testing_helpers.py

[core] cpp tests: Allow customizing code generation during tests (#14681 )

2026-03-18 00:16:01 +00:00

README.md

Tests for ESPHome

This directory contains some tests for ESPHome. At the moment, all the tests only work by simply executing esphome over some YAML files that are made to test whether the yaml gets converted to the proper C++ code.

Of course this is all just very high-level and things like unit tests would be much better. So if you have time and know how to set up a unit testing framework for python, please do give it a try.

When adding entries in test_.yaml files we usually need only one file updated, unless conflicting code is generated for different configurations, e.g. wifi and ethernet cannot be tested on the same device.

Current test_.yaml file contents.

Test name	Platform	Network	BLE
test1.yaml	ESP32	wifi	None
test2.yaml	ESP32	ethernet	esp32_ble_tracker
test3.yaml	ESP8266	wifi	N/A
test4.yaml	ESP32	ethernet	None
test5.yaml	ESP32	wifi	ble_server
test6.yaml	RP2040	wifi	N/A
test7.yaml	ESP32-C3	wifi	N/A
test8.yaml	ESP32-S3	wifi	None
test10.yaml	ESP32	wifi	None