Upload firmware

[ok2mon]

Hi everyone, when I copy the firmware file 1749704604.uf2 to BREEZEBOOT, the board disconnects from the PC and the red and blue LEDs start flashing alternately. What am I doing wrong?

Before uploading the file, only the blue diode was pulsing.
I programmed the processor with CMSIS-DAP

Thank you, Radek

[thezenox]

Hi Radek,
This all seems normal, except the red LED alternating. When first time flashing the firmware, there is not valid settings file, so the red LED will turn on, but it should be solid.
When USB is connected (during boot/reset) the blue LED will flash every ~500ms. You should be able to see a MassStorage device (Label: Breezedude) in this state.

About the red LED alternating, my only guess is kind of a bootloop or brownout. Do you have a battery connected? You could check serial output on the solderpads. If its starting, there should be some output.

Hope this helps, Flo

[ok2mon]

Thank you very much, the problem was that I did not have a battery connected, but I was powering from USB with a bridge connected.
Not every PC can read it and cannot read from BREEZEboot.
Thank you very much for everything and greetings from the Czech Republic.

Radek