At what "Baud Rate" does an ATmega1280 receive serial data when uploading???

Using Arduino Programming Questions
#1

What is the default "Baud Rate" for an ATmega1280 on an "Arduino Mega1280", when receiving serial data during an upload of a sketch???

I need to know because I think the FTDI chip on my board got fried after finding that my "resettable polyfuse" was actualy breaking at 630mA to 1A!!! :astonished: :astonished: :astonished:

#2

Arduino/hardware/arduino/bootloaders/atmega/ATmegaBOOT_168.c

#3

From boards.txt:

mega.name=Arduino Mega (ATmega1280)

mega.upload.protocol=stk500
mega.upload.maximum_size=126976
mega.upload.speed=57600

mega.bootloader.low_fuses=0xFF
mega.bootloader.high_fuses=0xDA
mega.bootloader.extended_fuses=0xF5
mega.bootloader.path=atmega
mega.bootloader.file=ATmegaBOOT_168_atmega1280.hex
mega.bootloader.unlock_bits=0x3F
mega.bootloader.lock_bits=0x0F

mega.build.mcu=atmega1280
mega.build.f_cpu=16000000L
mega.build.core=arduino

#4 
/* set the UART baud rate */
/* 20060803: hacked by DojoCorp */
//#define BAUD_RATE   115200
#ifndef BAUD_RATE
#define BAUD_RATE   19200
#endif

so... 19.2k bps?

#5

johnwasser: From boards.txt:

mega.name=Arduino Mega (ATmega1280)

mega.upload.protocol=stk500 mega.upload.maximum_size=126976 mega.upload.speed=57600

mega.bootloader.low_fuses=0xFF mega.bootloader.high_fuses=0xDA mega.bootloader.extended_fuses=0xF5 mega.bootloader.path=atmega mega.bootloader.file=ATmegaBOOT_168_atmega1280.hex mega.bootloader.unlock_bits=0x3F mega.bootloader.lock_bits=0x0F

mega.build.mcu=atmega1280 mega.build.f_cpu=16000000L mega.build.core=arduino

yeah, I saw both files... but which is it? 19.2k or 57.6k baud?

#6

so... 19.2k bps?

No, BAUD_RATE (Hint: Makefile)

#7

so 57.6kbps

mega: TARGET = atmega1280
mega: MCU_TARGET = atmega1280
mega: CFLAGS += '-DMAX_TIME_COUNT=F_CPU>>4' '-DNUM_LED_FLASHES=0' -DBAUD_RATE=57600
mega: AVR_FREQ = 16000000L 
mega: LDSECTION  = --section-start=.text=0x1F000
mega: $(PROGRAM)_atmega1280.hex
#8

I'm getting this error message:

avrdude: stk500_getsync(): not in sync: resp=0x00

What does that mean?

#9