bootloader

[Mickey]

Thanks a lot...
I already create a MYSController and GW + 2 NODES but your explanation made things much clearer especially the OTA part.
Do you plan to publish MYSController source?

and again I really appreciate the detailed step by step guide.

[Dheeraj]

@tekka
thanks for providing the steps to upload the MSYbootloader..
any idea why i'm getting following error in linking phase

"avr-gcc" -Os -nostartfiles -Wl,-s -Wl,-static -Wl,-Map=".map" -Wl,--start-group -Wl,--end-group -Wl,--gc-sections -mrelax -Wl,-section-start=.text=0x7800 -mmcu=atmega328p -o MYSBootloader.elf MYSBootloader.o -lm
MYSBootloader.o: In function main': MYSBootloader.c:(.init9+0x288): undefined reference to __boot_page_erase_short'
MYSBootloader.c:(.init9+0x2b8): undefined reference to __boot_page_fill_short' MYSBootloader.c:(.init9+0x2d6): undefined reference to __boot_page_write_short'
MYSBootloader.c:(.init9+0x2e0): undefined reference to `__boot_rww_enable_short'
collect2: error: ld returned 1 exit status
make: *** [MYSBootloader.elf] Error 1

not sure which library to include to resolve the issue.

[tekka]

@Dheeraj These are the code and cycle-optimized versions of the standard boot.h library which can be found here.
Alternatively, substitute these calls:

__boot_page_erase_short() ==> boot_page_erase()

__boot_page_fill_short() ==> boot_page_fill()

__boot_rww_enable_short() ==> boot_rww_enable()

[MarkV]

@tekka
Goodmorning i've got a question:
Isn't it possible to write a Boards.txt for al boards? or does someone have this allready.
I tried to load the bootloader in a Arduino Uno (CH340 interface) but this didn't function.
It would be nice to load it in:
Arduino Mega 2560
Arduino Uno (official)
Arduino Uno (CH340) chinees clone
Arduino mini
Arduino nano
Arduino micro
etc.

[tekka]

@MarkV I'm not sure I understand your question - bootloaders are programmed via the ISP interface (e.g. USBasp or ArduinoISP as programmer), not via serial/usb interface.

[MarkV]

@tekka
Thanks for the replay.
I ment i trying to load the boatloader into a arduino pro mini (clone) through a Arduino (as ISP) Mega 2560.
When i try to upload the boatloader i'm getting this error:

avrdude: Yikes!  Invalid device signature.
         Double check connections and try again, or use -F to override
         this check.

Fout bij het branden van de bootloader.

What's wrong and what should i change?

[dynamite]

@MarkV I had this message two days ago as well. I was programming with usbasp. I have solved it by powering my pro mini with a separate power supply. So please check the cables.

[MarkV]

@dynamite
Oh thanks, will do that. .
But why does it giveel this message.. i wouldn't link this message to a failty powernapp supply..

[dynamite]

@MarkV Dont't know, it helped in my case. Whether it was actually the power supply is the question. But if it helps in your case as well, than most probably yes. I think it has something to do with the communication and it reads a faulty or no signature.

[MarkV]

@dynamite
tryed it and got a other error report:

avrdude: Expected signature for ATmega328P is 1E 95 0F
         Double check chip, or use -F to override this check.
Verkeerde microcontroller gevonden. Hebt u het correcte board geselecteerd in het menu Hulpmiddelen > Board?

What now?

[dynamite]

@MarkV This is exactly the message I have received as well... Maybe check the other connection. Replace some cables? I the end I have been able to eliminate this message without changing anything in the software. In my case it was hardware related. (I was programming a pro mini and had it with two seperate mini's)

[MarkV]

I've got it duss far.. Stupid me, i've forgot to change the reset pin from 10 to 53.
After that it says ready with uploading the bootloader..
Now i'm going to test it to see if it worked...

[Mayank Raichura]

Hi,

I'm trying to burn 16Mhz version but I get the following error at the end:

avrdude: verification error, first mismatch at byte 0x0000
         0x3f != 0xff

Programmer: Usbasp

[Redferne]

@Mayank-Raichura I had the same problem with usbasp. The fix was to remove the -D flag (disable auto erase) when running avrdude.

[Mayank Raichura]

@Redferne Thanks. I'll check it out.