Twice Blinking after Upload

[kresnanotrobots.cpp]

Hey again, after few months.

While i'm uploading for binary read switch test project, i just notice the blinking L led pattern.

The pattern goes: before the upload loading message pops, the L led initially blinks. But
After the loading, it blinks again, and finishes the upload.

As i remember, i never seen this before.

So, Does it normal or is it?

Best regards,
Myself.

[xfpd]

My "Nano";

• with "minimal.ino" previously uploaded...
• after I press RESET, "L" blinks three times.
• When IDE (2.3.10) reaches "Uploading..." the "L" blinks two times, then RX/TX send/ack

@kresnanotrobots.cpp

the L led initially blinks.

This could be your loaded sketch has "L" blinking. Start with "minimal.ino"

[edit] It seems blinking "L" occurs with activity on SCK line or Pin 13.