Is it possible to embed AVR fuse bit values inside a compiled C source
file for programming? Indeed it is. However, be forewarned that
getting this into avrdude is not as straightforward as you may like.
Essentially, you’re going to have to extract the .fuse section and
pass in the value in a separate command.
20200917/DuckDuckGo avr-gcc fuse bits
20200917/http://www.nongnu.org/avr-libc//user-manual/group__avr__fuse.html
20200917/DuckDuckGo avr-gcc avr dude fuse section
20200917/https://www.avrfreaks.net/forum/fuse-bits-c-source-avr-libc-and-program-avrdude
How do you do high-voltage serial programming for the ATTiny85? Easy, just build this circuit with Arduino, or a slight variant with more level shifters Raspberry Pi. The solution is rather simple, just use a BJT transistor to control the 12 V signal. Please note that 1K resistors are used on all Arduino outputs, probably to protect the Arduino from any unexpectedly high voltages. A 1K resistor is also used in the 12 V power supply path, to limit the amount of 12 V current that can flow.
The Arduino sketch, in particular, just resets the fuse bits so that
you can use standard In-System Programming (ISP) over SPI to write the
rest of the program code. avrdude does have high-voltage serial
programming modes in it, but I’m not sure how to use those with
Raspberry Pi.
Oh yes… I see what’s going on with avrdude on Raspberry Pi.
Typically, you’ll just use it with the spidev programmer type.
Otherwise, you would select “GPIO bitbanging using the Linux sysfs
interface.” Ugh… that’s going to be slow. There is an arduino
programer type listed, that would probably be your best bet if nothing
else is stated.
20200917/DuckDuckGo raspberry pi avrdude high voltage serial
programming
20200917/http://kevincuzner.com/2013/05/27/raspberry-pi-as-an-avr-programmer/
20200917/https://www.electronics-lab.com/recover-bricked-attiny-using-arduino-as-high-voltage-programmer/