<p></p>
<p><b>@benpicco</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/15493#discussion_r564634925">dist/tools/riotboot_serial/main.c</a>:</p>
<pre style='color:#555'>> +    while (_get_char(fd) != RIOTBOOT_STAT_WAITING) {
+        printf("\rconnecting [%c]", spinner[tries % (sizeof(spinner) - 1)]);
+        _put_char(fd, RIOTBOOT_PROBE);
+        ++tries;
+    }
</pre>
<p>Maybe - but it can just as well be stopped with <code>ctrl + c</code> if you want to give up attaching to the bootloader.</p>

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