[nrf52,ota] allow to update OTA via cmd

[tomaszduda23]

What does this implement/fix?

It can be used in following way.

esphome upload h.yaml
esphome upload h.yaml --device /dev/ttyACM0
esphome upload h.yaml --device 00:11:22:33:44:55
esphome upload h.yaml --device BLE

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):

• fixes

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

• [nrf52,ota] zephyr mcumgr ota esphome-docs#5740

Test Environment

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

Example entry for config.yaml:

# Example config.yaml

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:

• Documentation added/updated in esphome-docs.

[github-actions]

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#12344
    components: [nrf52]
    refresh: 1h

---

(Added by the PR bot)

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.26%. Comparing base (1912dcf) to head (4da600c).
⚠️ Report is 8 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev   #12344      +/-   ##
==========================================
- Coverage   74.28%   74.26%   -0.03%     
==========================================
  Files          55       55              
  Lines       11597    11597              
  Branches     1583     1583              
==========================================
- Hits         8615     8612       -3     
- Misses       2578     2580       +2     
- Partials      404      405       +1     

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[github-actions]

Memory Impact Analysis

Components: nrf52
Platform: nrf52-adafruit

Metric	Target Branch	This PR	Change
RAM	18,281 bytes	18,281 bytes	➡️ +0 bytes (0.00%)
Flash	78,592 bytes	78,592 bytes	➡️ +0 bytes (0.00%)

---

Note: This analysis measures static RAM and Flash usage only (compile-time allocation).
Dynamic memory (heap) cannot be measured automatically.
⚠️ You must test this PR on a real device to measure free heap and ensure no runtime memory issues.

This analysis runs automatically when components change. Memory usage is measured from a representative test configuration.

[Copilot]

Pull request overview

Adds support for uploading nRF52 (Zephyr/MCUBoot) firmware updates via esphome upload ... --device ... using mcumgr/SMP over BLE (by name or MAC) or serial, integrating it into the existing nRF52 upload flow.

Changes:

• Add an nRF52 OTA uploader (smpclient-based) supporting BLE scan-by-name and direct BLE MAC / serial device targeting.
• Route nRF52 uploads to the new mcumgr path when BOOTLOADER_MCUBOOT is used, and allow explicit --device BLE / --device <MAC> selection.
• Update Python dependencies to include smpclient and adjust the pinned bleak version.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 8 comments.

File	Description
requirements.txt	Adds smpclient and changes the pinned bleak version.
esphome/components/nrf52/ota.py	New mcumgr/SMP upload implementation (BLE + serial).
esphome/components/nrf52/init.py	Hooks the new uploader into the nRF52 upload_program path and tweaks BLE logger scan usage.

[tomaszduda23]

retested
also with https://github.com/boogie/mcumgr-web