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don't reflash agnos update if already flashed (#19944)

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Co-authored-by: Comma Device <device@comma.ai>
old-commit-hash: c95c4df51df33094ed88ff78ee16000208272678
This commit is contained in:
Adeeb Shihadeh
2021-01-27 17:10:54 -08:00
committed by GitHub
parent 933f2952bd
commit 5db3d3f18e
1 changed files with 8 additions and 1 deletions
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selfdrive/hardware/tici/agnos.py
+8 -1
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@@ -80,8 +80,15 @@ def flash_partition(cloudlog, spinner, target_slot, partition):
cloudlog.info(f"Downloading and writing {partition['name']}")
downloader = StreamingDecompressor(partition['url'])
with open(f"/dev/disk/by-partlabel/{partition['name']}{target_slot}", 'wb') as out:
with open(f"/dev/disk/by-partlabel/{partition['name']}{target_slot}", 'wb+') as out:
partition_size = partition['size']
# Check if partition is already flashed
out.seek(partition_size)
if out.read(64) == partition['hash_raw'].lower().encode():
cloudlog.info(f"Already flashed {partition['name']}")
return
# Clear hash before flashing
out.seek(partition_size)
out.write(b"\x00" * 64)