Added stdout buffering. Now functional as a Pybricks uploader. Takes a main.bin MPY bytecode and sends, executes, and recieves from a Pybricks-running Lego Robot.

main.html

@@ -82,7 +82,7 @@
     let device, server, cmdChar;
     let maxCharSize = 20;
     let lastStatusFlags = 0;
-
+    let stdoutBuffer = '';
     function log(msg) {
       const el = document.getElementById('log');
       el.textContent += msg + '\n';
@@ -161,8 +161,16 @@
       const type = data[0];
 
       if (type === EVT_WRITE_STDOUT) {
-        const text = new TextDecoder().decode(data.slice(1));
-        log('[stdout] ' + text);
+        // Buffer and reassemble split packets
+        stdoutBuffer += new TextDecoder().decode(data.slice(1));
+        const lines = stdoutBuffer.split('\n');
+        stdoutBuffer = lines.pop() || ''; // Keep incomplete line
+
+        for (const line of lines) {
+          if (line.trim()) {
+            log('[stdout] ' + line);
+          }
+        }
       } else if (type === EVT_STATUS_REPORT) {
         const view = new DataView(data.buffer);
         const flags = view.getUint32(1, true);