avrdude baudrate when flashing

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1

I got a programmer sync issue when flashing on linux and not on windows I compared averdude command line and it looks that baudrate is th answer

the avrdude comand line for uploading on windows is :

C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avrdude -CC:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -carduino -PCOM10 -b[b]57600[/b] -D -Uflash:w:C:\Users\DV\AppData\Local\Temp\arduino_build_247080/AnalogReadSerial.ino.hex:i

and for linux one :

/home/oga/arduinoIDE/arduino-1.8.6/hardware/tools/avr/bin/avrdude -C/home/oga/arduinoIDE/arduino-1.8.6/hardware/tools/avr/etc/avrdude.conf -v -patmega328p -carduino -P/dev/ttyUSB0 -b[b]115200[/b] -D -Uflash:w:/tmp/arduino_build_408142/AnalogReadSerial.ino.hex:i

I changed the baudrate in command line and it looks ok but I looked in IDE settings and dont seen where to change this
I looked in avrdude.conf and it looks that windows and linux one are the same set baudrate for all programers at 115200 (AVRICEMkII included)

does any arduino gods knows where windows IDE is taking this 56200 baudrate parameter ??
thank's

2

Not my area of expertise but look for a file called boards.txt

3

In Arduino AVR Boards 1.6.21, Arduino changed the default upload speed of the Arduino Nano board definition from 57600 to 115200 to accommodate the new bootloader used on official Arduino Nano boards. If you have an old or clone Nano and are using Arduino AVR Boards 1.6.21 or newer, you will need to select Tools > Processor > ATmega328P (Old Bootloader).

Likely the problem is that you have a different version installed on your Windows machine vs. the Linux machine.

4

pert:
In Arduino AVR Boards 1.6.21, Arduino changed the default upload speed of the Arduino Nano board definition

...
...

Likely the problem is that you have a different version installed on your Windows machine vs. the Linux machine.

Ah, so that was also affected. Thanks.

5

pert:
In Arduino AVR Boards 1.6.21, Arduino changed the default upload speed of the Arduino Nano board definition from 57600 to 115200 to accommodate the new bootloader used on official Arduino Nano boards. If you have an old or clone Nano and are using Arduino AVR Boards 1.6.21 or newer, you will need to select Tools > Processor > ATmega328P (Old Bootloader).

Thank's a lot for this explainations !!

pert:
Likely the problem is that you have a different version installed on your Windows machine vs. the Linux machine.

you're probably right I tested on 2 linux machines but with last IDE rev and on a collegue's machine for the windows one and it's probably an oldest release
thank's again