bootloader baud rate for 3.3v 8MHz processor

I'm using an 3.3volt 8 MHz 328 chip
connected via USB it all works nicely
I now want to upload software wirelessly
I have a pair of XRF that also work very nicely,
but (there's always a but) I think i have to set the baud rate for bootloading
question is - to what
I'm guessing not 115,200 - or is it?
(how do I find out)
cheers
Mike

Which bootloader are you using?

How will you create a Reset pulse to start the bootloader looking for the download?

regular optibootloader

CrossRoads:
How will you create a Reset pulse to start the bootloader looking for the download?

XRF can be persuaded to generate the reset pulse
I have it working with a Uno
just wondered what the changes are for a slower processor

Optiboot for a 16MHz Uno assumes 115200 bps but will probably work at 8MHz and 57600 bps. You will notice the three or four flashes it gives on the pin 13 LED will be faster than normal because it thinks it's running at 16MHz.

I use this version for 8MHz projects, it's compiled for 8MHz and 57600 upload speed.

:slight_smile: sucks eggs!
can now update software wirelessly using a pair of XRF modules
bunny = happy!