The size of partition of type APP should be multiple of 4 KB. Partition
generation tool now make this as a mandatory requirement. This is
minimum flash erase size. If the size of the APP type partition is not
aligned to 4 KB then the last erase operation could go beyond the allocated
partition and hence may fail. This issue would only be observed when the
firmware size grows very close to the allocated partition size, and hence
causing the OTA update to fail.
For already deployed devices on-field with the size of APP partition not
aligned to flash sector boundary, it is best to ensure that firmware
size always remains within the lower 4 KB boundary of the total
allocated space. While migrating to ESP-IDF 5.3 release, partition table
for an existing project can be adjusted accordingly for the build to
succeed.
Found during discussion in https://github.com/espressif/esp-idf/pull/12460
Examples for zigbee are using custom license, which is not present
on the SPDX license list. This was discussed on !16205 and a decision
was made that the examples will be put on check-copyright's ignore list.
SPDX has LicenseRef-[idstring] identifier for such cases, so let's try
to use it. In this particular case the LicenseRef-Included is used to
express that the full license text is included in the source file.
Note that the LicenseRef-Included is not part of SPDX. It's just
something I used. No change is needed on the check-copyright side.
Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
