Installing 8bit AVR development kit from macOS HomeBrew and FreeBSD Ports with the optiboot environment

avr-devenv-install-macos.md

AVR 8bit HomeBrew installation for macOS

In case you have a trouble for updating the tap, perform uninstalling of the related tools and osx-cross/avr tap:

brew remove avr-binutils avr-gcc
brew untap osx-cross/avr

For installing the tap, do the following:

brew tap osx-cross/avr
brew install avr-gcc
# avrdude is under homebrew-core
brew install avrdude

See also

• http://oramind.com/osx-stk500/
• https://github.com/osx-cross/homebrew-avr/
• osx-cross/homebrew-avr#14
• osx-cross/homebrew-avr#55

avr-ports-for-FreeBSD.md

AVR 8bit Ports for FreeBSD

• devel/avr-binutils
• devel/avr-gcc
• devel/avr-libc
• devel/avrdude

avrdude-m168-optiboot-load.sh

#!/bin/sh
# write a hex file to optiboot-enabled arduino
avrdude -D -c arduino -p m168 -b 115200 -P /dev/cu.[target-device] -U flash:w:target-file.hex

avrdude-m168-writing-dragon-pp.sh

#!/bin/sh
# this is an example of writing the optiboot image to atmega168
# for ATmega168 with AVR Dragon in HVPP (note *PP*) mode
# NOTE: the -P should be changed appropriately
# Check out the lock/efuse/hfuse/lfuse bits
# Note 2: hfuse set to preserve EEPROM through chip erase
avrdude -D -v -p m168 -c dragon_pp \
	-P usb -e -u -U lock:w:0xff:m \
	-U efuse:w:0xfc:m -U hfuse:w:0xD5:m -U lfuse:w:0xF7:m \
	-U flash:w:optiboot_atmega168.hex \
	-U lock:w:0xef:m

avrdude-m328p-optiboot-load.sh

#!/bin/sh
# write a hex file to optiboot-enabled arduino
avrdude -D -c arduino -p m328p -b 115200 -P /dev/cu.[target-device] -U flash:w:target-file.hex

avrdude-m328p-writing-dragon-pp.sh

#!/bin/sh
# this is an example of writing the optiboot image to atmega328
# for ATmega328p with AVR Dragon in HVPP (note *PP*) mode
# NOTE: the -P should be changed appropriately
# Check out the lock/efuse/hfuse/lfuse bits
# Note 2: must add -F flag as an workaround for the Device ID issue
# (removed from this script)
# Note 3: hfuse set to preserve EEPROM through chip erase
avrdude -D -v -p m328p -c dragon_pp \
	-P usb -e -u -U lock:w:0xff:m \
	-U efuse:w:0xfd:m -U hfuse:w:0xd6:m -U lfuse:w:0xff:m \
	-U flash:w:optiboot_atmega328p.hex \
	-U lock:w:0xef:m

hex-edit-on-vim.md

Hexadecimal edit on vim

References

• What's a good hex editor/viewer for the Mac?
• How to start vim without executing /etc/vimrc?
• VIM Disable Automatic Newline At End Of File

Howto

vim -u NONE -b eeprom.bin
:set noeol
:% !xxd
[hex dump format, do the editing]
:% !xxd -r
:w

Alternative

• Hex Fiend for OS X

optiboot_atmega168.hex

:103E00001F92CDB7DEB7112484B714BE982F9D70D2
:103E100009F0D6D085E08093810082E08093C000D5
:103E200088E18093C10086E08093C20080E18093A6
:103E3000C4008EE0B0D0259A86E020E33CEF91E00C
:103E4000309385002093840096BBB09BFECF1D9AD3
:103E5000A8958150A9F7812C912C13E001E025E071
:103E6000F22E31E1E32E8BD0813471F488D0898336
:103E700098D08981823811F482E004C0813809F435
:103E80006DC083E075D071C0823411F484E103C049
:103E9000853419F485E08DD068C0853549F46FD03C
:103EA000D82E6DD08D2C912C982A880C991C5CC032
:103EB000863521F484E07DD080E0E4CF843609F0BB
:103EC00036C05DD05CD0D82E5AD0C82EA12CBB24D1
:103ED000B39455D0F50181935F01DE12FACF61D022
:103EE000F5E4CF1201C0FFCFF40117BFE89507B684
:103EF00000FCFDCFA401A0E0B1E02C911296CD0111
:103F00000197FC01808130E0382BFA01090107BFDD
:103F1000E89511244E5F5F4FDA12EFCFF401F7BE40
:103F2000E89507B600FCFDCFE7BEE8951EC08437D4
:103F300071F425D024D0D82E22D033D05401F501ED
:103F400085915F0115D0DA94D110F9CF0EC0853775
:103F500039F427D08EE10CD084E90AD086E092CFE4
:103F6000813511F488E017D01CD080E101D07BCFDF
:103F70009091C00095FFFCCF8093C600089580917A
:103F8000C00087FFFCCF8091C00084FD01C0A895D0
:103F90008091C6000895E0E6F0E098E19083808388
:103FA0000895EDDF803219F088E0F5DFFFCF84E17E
:103FB000DFCFCF93C82FE3DFC150E9F7CF91F1CF27
:0C3FC000282E80E0E8DFE0E0FF270994F5
:023FFE000206B9
:0400000300003E00BB
:00000001FF

optiboot_atmega328p.hex

:107E00001F92CDB7DEB7112484B714BE982F9D7092
:107E100009F0D7D085E08093810082E08093C00094
:107E200088E18093C10086E08093C20080E1809366
:107E3000C4008EE0B1D0259A86E020E33CEF91E0CB
:107E4000309385002093840096BBB09BFECF1D9A93
:107E5000A8958150A9F7812C912C13E001E025E031
:107E6000F22E31E1E32E8CD0813479F489D08983EC
:107E700099D08981823811F482E005C0813811F4EB
:107E800086E001C083E075D071C0823411F484E1D2
:107E900003C0853419F485E08DD068C0853549F478
:107EA0006FD0D82E6DD08D2C912C982A880C991CCF
:107EB0005CC0863521F484E07DD080E0E4CF843658
:107EC00009F036C05DD05CD0D82E5AD0C82EA12C77
:107ED000BB24B39455D0F50181935F01DE12FACF34
:107EE00061D0F5E4CF1201C0FFCFF40117BFE895D0
:107EF00007B600FCFDCFA401A0E0B1E02C911296E2
:107F0000CD010197FC01808130E0382BFA01090195
:107F100007BFE89511244E5F5F4FDA12EFCFF401EF
:107F2000F7BEE89507B600FCFDCFE7BEE8951EC09A
:107F3000843771F425D024D0D82E22D033D05401E8
:107F4000F50185915F0115D0DA94D110F9CF0EC0FB
:107F5000853739F427D08EE10CD085E90AD08FE03F
:107F600092CF813511F488E017D01CD080E101D088
:107F70007ACF9091C00095FFFCCF8093C600089502
:107F80008091C00087FFFCCF8091C00084FD01C0BC
:107F9000A8958091C6000895E0E6F0E098E190830E
:107FA00080830895EDDF803219F088E0F5DFFFCFA0
:107FB00084E1DFCFCF93C82FE3DFC150E9F7CF9142
:0E7FC000F1CF282E80E0E8DFE0E0FF270994F3
:027FFE00020679
:0400000300007E007B
:00000001FF

Note well: fuse bit definition between ATmega168 and ATmega328p are different from each other!

Remember the 1k BIGBOOT code image must be booted from byte address 0x7c00 in GNU or 0x3c00 in ATmega328p.
The hfuse value must be 0xDC if EESAVE is not enabled (=set to 0), 0xD4 if EESAVE is enabled.