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sd put: copy a file to the SD card over USB serial

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scripts/sd_put.sh <file> [card path] sends a file (by default into
/updates, for Update from SD) without taking the card out. The serial
driver drops bytes once its receive buffer is full, so the transfer is
stop-and-wait: 1 KB chunks, each acknowledged once the Storage Service
has written it, into a 2 KB receive buffer. The device checks the
SHA-256 before renaming <path>.part into place, and gives up after 5 s
of silence or a card job that never returns. FileReceiver holds the
logic, with 12 host tests. About 55 KB/s: 1.6 MB in under 30 s.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT
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twisla
2026-10-04 02:31:19 +02:00
co-authored by Claude Opus 5.5
parent 8ec4e9e449
commit 5b199c2436
7 changed files with 575 additions and 1 deletions
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README.md
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@@ -48,7 +48,7 @@ scripts/flash.sh --ota 10.39.39.12 # build, sign and push; or set RORO_OTA_H
The device shows the push address in **Settings → Firmware**. It installs a correctly signed update right away, restarts (waiting up to 60 s if you're typing), and runs the new firmware on **Probation**. If the new firmware crashes, or can't reconnect Wi-Fi within 3 minutes, it rolls back to the previous one and says so.
To install from the SD card instead, copy the `.ota` file from `.pio/build/cardputer-adv/` into `/updates` on the card, then use **Settings → Firmware**.
To install from the SD card instead, copy the `.ota` file from `.pio/build/cardputer-adv/` into `/updates` on the card, then use **Settings → Firmware**. With the Cardputer on USB, the card can stay in: `scripts/sd_put.sh <file.ota>` sends it over the serial console into `/updates` (about 30 s for 1.6 MB, checked with SHA-256 before it's renamed into place; `SD_PUT_DEBUG=1` shows the console while it runs).
**The private key** lives in `~/.config/roro9stack/ota-key.pem` and must never be committed. If it's lost, generate a new pair and flash once over USB.