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[pn7150] Combine log statements to reduce loop blocking - #12944

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bdraco merged 1 commit into
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combine-logs-pn7150
Jan 5, 2026
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[pn7150] Combine log statements to reduce loop blocking#12944
bdraco merged 1 commit into
devfrom
combine-logs-pn7150

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@bdraco
@bdraco bdraco commented Jan 4, 2026
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What does this implement/fix?

Combine consecutive log statements into single calls using multi-line string literals.

Logging is one of the most intensive operations in ESPHome and blocks the event loop longer than most other operations. Each ESP_LOG* call involves formatting, memory allocation, serial output, and network packet transmission. Combining consecutive log statements reduces event loop blocking and the number of network packets sent to connected clients.

Note: The log processor reformats multi-line output so each line gets its own timestamp and log level prefix - the final output format is unchanged. Minor reordering of dump_config output may occur when LOG_PIN or other logging macros cannot be combined with ESP_LOG* calls - this is acceptable as it does not affect functionality.

See https://developers.esphome.io/architecture/logging/ for more details.

Types of changes

  • Bugfix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to not work as expected)
  • Developer breaking change (an API change that could break external components)
  • Code quality improvements to existing code or addition of tests
  • Other

Related issue or feature (if applicable):

Pull request in esphome-docs with documentation (if applicable):

Test Environment

  • ESP32
  • ESP32 IDF
  • ESP8266
  • RP2040
  • BK72xx
  • RTL87xx
  • nRF52840

Example entry for config.yaml:

# N/A - no config changes

Checklist:

  • The code change is tested and works locally.
  • Tests have been added to verify that the new code works (under tests/ folder).

If user exposed functionality or configuration variables are added/changed:

Copilot AI review requested due to automatic review settings January 4, 2026 23:12
@codecov-commenter
codecov-commenter commented Jan 4, 2026
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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.46%. Comparing base (a37d4b1) to head (23676a6).

Additional details and impacted files
@@           Coverage Diff           @@
##              dev   #12944   +/-   ##
=======================================
  Coverage   73.46%   73.46%           
=======================================
  Files          53       53           
  Lines       11310    11310           
  Branches     1535     1535           
=======================================
  Hits         8309     8309           
  Misses       2602     2602           
  Partials      399      399           

☔ View full report in Codecov by Sentry.
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@github-actions
github-actions Bot commented Jan 4, 2026
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To use the changes from this PR as an external component, add the following to your ESPHome configuration YAML file:

external_components:
  - source: github://pr#12944
    components: [pn7150]
    refresh: 1h

(Added by the PR bot)

@github-actions
github-actions Bot commented Jan 4, 2026
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👋 Hi there! I've automatically requested reviews from codeowners based on the files changed in this PR.

@jesserockz, @kbx81 - You've been requested to review this PR as codeowner(s) of 1 file(s) that were modified. Thanks for your time! 🙏

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Pull request overview

This PR optimizes logging performance in the pn7150 NFC component by combining consecutive log statements into single multi-line calls. This reduces event loop blocking caused by the overhead of multiple separate logging operations (formatting, memory allocation, serial output, and network transmission).

Key Changes:

  • Combined 2 sequential log statements in reset_core_() into 1 multi-line call
  • Combined 5 sequential log statements in init_core_() into 1 multi-line call
  • Combined 2 log statements in process_rf_intf_activated_oid_() into 1 multi-line call

Comment thread esphome/components/pn7150/pn7150.cpp
@bdraco
bdraco commented Jan 5, 2026
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thanks

@bdraco
bdraco merged commit 2d8abbb into dev Jan 5, 2026
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@bdraco
bdraco deleted the combine-logs-pn7150 branch January 5, 2026 00:46
@github-actions github-actions Bot locked and limited conversation to collaborators Jan 6, 2026
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