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23 lines
807 B
23 lines
807 B
gotchas:
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* wrong atmega328 (need atmega328p-pu, not atmega328-pu) (though this can still be used)
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* need fuse bits set separate from programming hex (pickit w/pics on the other hand
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handles this all in one)
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* need lock bits set
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* need 16MHz crystal when programming hex and lock bits (can use one from uno
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board)
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quick guide:
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set proper wiring on avr dragon (see image in pics)
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set fuse bits
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avrdude -b 19200 -c dragon_isp -p m328p -v -e -U efuse:w:0xFD:m -U hfuse:w:0xDE:m -U lfuse:w:0xFF:m
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add crystal, load hex, and program lock fuse
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avrdude -b 19200 -c dragon_isp -p m328p -v -e -U flash:w:hexfilename.hex -U lock:w:0x0F:m
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hexfilename.hex - the optiboot loader is included in
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arduino-1.8.5/hardware/arduino/avr/bootloaders/optiboot_atmega328.hex
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for more details, and references, see notes
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