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Only write to the flash what was read from the file

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The write method is given the full aligned buffer to write to flash even though it may not be fully populated. This change ensures only what has been read is written to flash. Preventing potential corrupted firmware and additional flash wear.
This commit is contained in:
John Youren
2025-06-20 14:45:13 +01:00
committed by GitHub
parent 206a324cf4
commit 53fd571ddb
1 changed files with 1 additions and 1 deletions
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examples/boot/application/rp/src/bin/a.rs
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@@ -54,7 +54,7 @@ async fn main(_s: Spawner) {
for chunk in APP_B.chunks(4096) {
buf.0[..chunk.len()].copy_from_slice(chunk);
defmt::info!("writing block at offset {}", offset);
writer.write(offset, &buf.0[..]).unwrap();
writer.write(offset, &buf.0[..chunk.len()]).unwrap();
offset += chunk.len() as u32;
}
watchdog.feed();