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Apr 16, 2022 at 14:28 comment added Sim Son ...you probably have to change the command a little bit if you want to upload a bootloader, I don't quite remember atm... but you definitely need to use the -U option for upload
Apr 16, 2022 at 14:25 comment added Sim Son chrisl is right, you are not uploading anything. The line to upload in one of my makefiles for an ATmega328 looks like this... avrdude -p m328 -c avrispv2 -P COM4 -U flash:w:hexfile.hex -U lfuse:w:0xe2:m -U hfuse:w:0xdf:m -U efuse:w:0xf9:m -v -B 10 -i 10... if you want to upload, you need to specify both the write target and a hex file (-U flash:w:hexfile.hex)
Apr 16, 2022 at 13:36 comment added timemage Most people will never have a legitimate reason to use avrdude's -F options. That message you get from avrdude about -F is a not a prescription. I see you mentioning 328P and 328, but it's not clear to me that you understand that these are different devices, which is why they have different signatures. So what you actually have? Is there a P in your actual chip's part number or not?
Apr 15, 2022 at 22:39 comment added chrisl Why do you think that you have burned the bootloader? Neither the avrdude commandline, nor its output mention the bootloader hex file or writing to the Atmega. I'm not that firm with the avrdude options, but it seems, that you just read the fuses. You have written nothing (it would have told you if it had written something).
S Apr 15, 2022 at 22:33 review First questions
Apr 15, 2022 at 22:37
S Apr 15, 2022 at 22:33 history asked Jenna Hebert CC BY-SA 4.0