boards.txt

# Optiboot Arduino support
# http://optiboot.googlecode.com
# Peter Knight, 2010
# Bill Westfield, 2013 - now includes build.variant for 1.0.2 and later
# Yugo Kajiwara, 2017

##############################################################

## Arduino Pro or Pro Mini (1.8V, 4 MHz) w/ ATmega328
## -------------------------------------------------
pro328p4mhz.name=[PLEN] Arduino Pro Mini 4MHz
pro328p4mhz.upload.tool=arduino:avrdude
pro328p4mhz.upload.protocol=arduino
pro328p4mhz.upload.maximum_size=30720
pro328p4mhz.upload.maxinum_data_size=2048
pro328p4mhz.upload.speed=9600

pro328p4mhz.bootloader.low_fuses=0xfd
pro328p4mhz.bootloader.high_fuses=0xde
pro328p4mhz.bootloader.extended_fuses=0x07
pro328p4mhz.bootloader.path=optiboot
pro328p4mhz.bootloader.file=optiboot/optiboot_atmega328_pro_4MHz.hex
pro328p4mhz.bootloader.unlock_bits=0x2F
pro328p4mhz.bootloader.lock_bits=0x2F
pro328p4mhz.bootloader.tool=arduino:avrdude

pro328p4mhz.build.mcu=atmega328p
pro328p4mhz.build.f_cpu=4000000L
pro328p4mhz.build.core=arduino:arduino
pro328p4mhz.build.variant=arduino:standard
pro328p4mhz.build.board=AVR_PRO_4MHZ