Add a new CMake function esp_partition_flash_binary() that provides a
unified API for registering partition data binaries to be flashed. It
replaces the direct esptool_py_flash_target calls scattered across
components (spiffs, fatfs, nvs_flash) with a single function that:
- Resolves partition offset from the partition table automatically
- Determines encryption requirements (auto-detect or ALWAYS_PLAINTEXT)
- Creates per-partition flash targets (e.g. idf.py <partition>-flash)
- Optionally includes the binary in `idf.py flash` via FLASH_IN_PROJECT
On the linux target, the function registers binaries for pre-loading
into the emulated flash. A build-time manifest (linux_flash_data.txt)
is generated via file(GENERATE), and partition_linux.c reads it at
runtime to copy each binary into the memory-mapped flash buffer at
the correct offset.
The partition_ops example is updated to use the new function and
includes a custom_partition with pre-built data to demonstrate the
full workflow, including on the linux target.
The condition filtering attributes lacked parentheses, causing the
'not startswith(_)' guard to only apply to str attributes. Python 3.14's
new __firstlineno__ (int) class attribute leaked into the output.
Also includes ruff auto-formatting fixes (imports, trailing commas,
union type annotations).
Rewrite build_lfn_short_entry_name() and add _gen_numname_suffix() helper
to match the gen_numname() algorithm in ff.c. This fixes:
- chr(order) producing raw binary instead of ASCII digits
- Collision for order >= 10 when str(order) makes the name exceed 8 chars
- Hex suffix with dynamic stem shortening (matching C implementation)
- CRC16-CCITT hash for seq > 5 to reduce collision probability
Also fix LDIR_Name2_SIZE typo in long_filename_utils.py (should be
LDIR_Name3_SIZE), which made the assertion guard too permissive.
Add ShortFilenameGenerationTestCase with 9 unit tests covering single-digit,
multi-digit, hash-based, and collision-free generation scenarios.
This commit establishes the foundation for making the esptool_py
component idempotent.
The following changes are made in this commit:
- Removes unnecessary dependency of esp_wifi component on esptool_py.
- Add missing esptool_py dependencies to components which directly use
esptool_py specific functions or variables but do not declare a public
or private dependency.
