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