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Topic: [RESOLVED!] Modify adaboot for ATmega1284P (Read 875 times) previous topic - next topic


Dec 03, 2009, 05:40 pm Last Edit: Dec 04, 2009, 12:47 am by RunAway Reason: 1
Hi, I just got 2 Atmega128P as samples from Atmel.
I was wondering if ADABOOT can be adapted for the 1284P since it already support the 644P (used by Sanguino project).

I tried to modify latest ADABootLoaderR3_9D15 myself, basically I added
Code: [Select]
|| defined(__AVR_ATmega1284P__) in the same #elif of 644P except for the signature section.
However isn't working (no led flashes) :(

I figured out that maybe the problem was "simply" the different LDSECTION value in the Makefile that needs to be changed for the 1284P.
So, as the datasheet say, for a boot size of 1024 words (2kbytes) the boot reset address is 0xFC00 then the LDSECTION will be LDSECTION  = --section-start=.text=0x1F800 (0xFC00 x 2 = 0x1F800)
The value of 1F800 is even confirmed calculating it starting from the flash size (128k = 131072 bytes - 2048 bytes = 129024 bytes = 0x1F800)
However using 0x1F800 give me this error:
Code: [Select]
Max:Yrouel$ make atmega1284p
/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/bin/avr-gcc -g -Wall -O2 -mmcu=atmega1284p -DF_CPU=16000000L   '-DMAX_TIME_COUNT=F_CPU>>6' '-DBAUD_RATE=57600' '-DADABOOT=4' '-DWATCHDOG_MODS'   -c -o ATmegaBOOT_168.o ATmegaBOOT_168.c
/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/bin/avr-gcc -g -Wall -O2 -mmcu=atmega1284p -DF_CPU=16000000L   '-DMAX_TIME_COUNT=F_CPU>>6' '-DBAUD_RATE=57600' '-DADABOOT=4' '-DWATCHDOG_MODS' -Wl,--section-start=.text=0x1F800 -o ADABoot_1284p.elf ATmegaBOOT_168.o
/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/bin/../lib/gcc/avr/4.3.2/../../../../avr/bin/ld: address 0x2000e of ADABoot_1284p.elf section .text is not within region text
/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/bin/../lib/gcc/avr/4.3.2/../../../../avr/bin/ld: address 0x2000e of ADABoot_1284p.elf section .text is not within region text
make: *** [ADABoot_1284p.elf] Error 1
rm ATmegaBOOT_168.o

Here the files I'm using:
Modified source (diff with the original)

RESOLVED: I modified the optimization from -O2 to -Os and NO ERRORS! and now the bootloader is working (led flashes correctly) :D


Did I understand right? You got the 1284p fully working with IDE?

If so, please repost links.... they don't ork any more....


Thank you!
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How did you get the sample from them i have had no luck.

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