Quote Originally Posted by picnaut
Now, if you're not handling serial port communication all of the time, you are going to have to at least check the receive buffer every second or so to see if the "request-to-send" character has been received (the bootloader software will send if many times).
Actually, I did some more experimenting and found that you can go up to a minute without checking the serial port. The bootloader sends out the request for quite a while. However, to be on the safe side, I would check for that character at least every 30 seconds.

Regards,