loader: add ota#424
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Wraps a sketch (and optionally the loader) in the 20-byte Arduino OTA header and LZSS-compresses the payload. Invoked from postobjcopy hooks in platform.txt. Signed-off-by: Gilberto Conti <g.conti@arduino.cc>
On boot, install /ota:/UPDATE.BIN into the user_sketch partition when the OTA_UPDATE_PENDING sentinel is present. Validates the sketch header, bounds, and keeps the sentinel on post-erase failure for retry. Signed-off-by: Gilberto Conti <g.conti@arduino.cc>
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This is a first porting of portenta_ota and
The main "change" is that now the ota payload contains
<llext loader + padding + user sketch>Features
Boards
Step to reproduce
extra/ota-pack.otafile from the output dirpython -m http.server 8000in the directory that contains the sketch