Hello to all!
I am working with the “USB to Serial Converter” project from LUFA. Code is working fine. Now I would like to use bootloader (so I don’t need a programmer). That’s when I saw the “CDC Bootloader” example project (also from LUFA). Is this the correct bootloader for this case?
So, I flashed the bootloader with a programmer to the atmega32u4. This step is fine (led is blinking). Now I would like to flash my application to the uC. I am using a USB cable connected to the D+/D- pins. When I try to program the device from Atmel Studio, there is no option there… only the “simulator” tool… Probably that’s not the correct hardware connection I need…
I read the “Bootloader FAQ” pdf and there it’s written:
“… you will need an external programmer to write the bootloader to the MCU…” -> Done!
“…Then simply use the bootloader's normal communication mechanism to transfer and program the application…” -> That’s the part I am lost…
How is this done? What am I missing here?
Should I use maybe another software (and not Atmel Studio) just to flash to *.hex?
And what would be the hardware connection?
Thank you very much for your support! Any tip will be appreciated!