Board arduino:avr:ATmega328p-16 doesn't define a 'build.board' preference. Auto-set to: AVR_ATMEGA328P-16
Board breadboard:avr:atmega328bb doesn't define a 'build.board' preference. Auto-set to: AVR_ATMEGA328BB
But if I use Putty with baud rate 9600 or 115200, garbage characters appears. Only 74880 gives a close to meaningful output (no mis-typing below):
ets Jan 8 2013,rst cause:2, boot mode:(3,6)
load 0x4010f000, len 1384, room 16
tail 8
chksum 0x2d
csum 0x2d
v09f0c112
~ld
which is not what I saw in others tutorials I've followed. Besides, it refused to react to any keyboard input from Putty or Arduino serial monitor. I would appreciate if anyone can point my the direction to fix it?