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uISP / uHID-bootloader-avr

the uISP bootloader, loosely based on bootloadHID
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attiny #2

Open badgeek opened 7 years ago

badgeek commented 7 years ago

is there any attiny85 chip support for this bootloader?

nekromant commented 7 years ago

It looks like attiny85 lacks the hardware bootloader support, so making a software-only workaround will be VERY tricky due to the fact that v-usb needs interrupts to function properly.

On the other hand, there exists this v-usb modification that might give us a chance: https://cpldcpu.com/2014/03/02/interrupt-free-v-usb/

Unfortunately I don't have an attiny85 around to give it a proper try, but if you are feeling like it I've added an attiny85 test config to devices/ and added some minor modifications so that it would at least compile properly. If you manage to get it running - please send a pull request ;)