I'm in macOS 12.5.1 on Intel-based MacBook Pro using a ATmega328P in Audio Uno, avr-gcc and avrdude integrated by Makefile in VSCode IDE for my development.
I've my program done. But it tried ten times avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00 avrdude: stk500_recv(): programmer is not responding and reported avrdude: opening programmer "avrisp" on port "/dev/tty.usbmodem14301" failed when I use avrdude -c avrisp -p m328p -b 19200 -P /dev/tty.usbmodem14301 -U AVRTest.hex to upload my program to on-board microcontroller on Arduino Uno.
However, after a while, what error I mentioned above disappeared. But it also has an error that avrdude: Device signature = 0x000000 avrdude: Yikes! Invalid device signature. Double check connections and try again, or use -F to override this check.
By the way, I successfully uploaded a program in Arduino IDE but failed to burn Bootloader with an error Error while burning bootloader..
Does it means it's impossible to load program to Arduino Uno's on-board microcontroller via AVRDUDE outside of Arduino IDE? If not, how can I fix this?