From b519db31c5457d9e029f83e8399862c7efddcb79 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thea=20Sch=C3=B6bl?= <dev@theaninova.de>
Date: Fri, 30 Jan 2026 18:13:29 +0100
Subject: [PATCH] feat: adjust chunking

---
 src/lib/serial/device.ts | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/lib/serial/device.ts b/src/lib/serial/device.ts
index 83935a47..b953fa85 100644
--- a/src/lib/serial/device.ts
+++ b/src/lib/serial/device.ts
@@ -548,7 +548,6 @@ export class CharaDevice {
 
       const writer = this.port.writable!.getWriter();
       try {
-        const log: SerialLogEntry[] = [];
         const start = performance.now();
         writer.write(new TextEncoder().encode(`RST OTA\r\n`));
 
@@ -559,11 +558,11 @@ export class CharaDevice {
         const chunkSize = 128;
         const chunks: Promise<void>[] = [];
         for (let i = 0; i < file.byteLength; i += chunkSize) {
-          const chunk = file.slice(i, i + chunkSize);
+          const size = Math.min(chunkSize, file.byteLength - i);
           chunks.push(
             writer
-              .write(new Uint8Array(chunk))
-              .then(() => progress(i + chunk.byteLength, file.byteLength)),
+              .write(new Uint8Array(file, i, size))
+              .then(() => progress(i + size, file.byteLength)),
           );
         }
         await Promise.all(chunks);