Re: [avr-chat] programmer writes BootLoader as ihex file at wrong flash address

[Thomas Richter]

Also after upgrading AVRStudio to version 4.13 Build 528 the error could 
not be solved.
:(

Thomas Richter schrieb:
> Hi,
>
> I will write a Boot Loader for the ATmega2561. To create it I use 
> avr-gcc version 4.1.1 (taken from WinAVR installation version 20070122).
> The linker creates an *.elf file (executable and linking format file). 
> I have used the start address 0x3E000. The BootLoader Flash Section is 
> 4096 words wide.
>
> To create the intel hex file I use avr-objcopy (BFD header file 
> version 2.17 + coff-avr-patch (20050630)) also out from WinAVR 
> installation. The resulting Intel Hex file starts with
>    :020000023000CC
>    :10E000000D9466F00D9483F00D9483F00D9483F0DD
>    :10E010000D9483F00D9483F00D9483F00D9483F0B0
> and ends with
>    :10EAC0000052656164790A0057726F6E67206F703B
>    :10EAD00074696F6E2E200A006E6577502E00646F89
>    :0AEAE0006E652E00656E642E0000C6
>    :040000033000E000E9
>    :00000001FF
>
> To program the intel hex file into flash I use AVR Studio Version 
> 4.12, Service Pack 4, Build 498.
>
> I do not understand why the programmer writes the BootLoader not to 
> the correct flash address. If I read out the complete flash with AVR 
> Studio then the BootLoader is placed at 0x1E000 and not a 0x3E000.
> Why AVR Studio programs the BootLoader file at wrong address?
> Is there an error in the Intel Hex file?
> Is AVR Studio the problem? Should I use another tools?
>
> Thanks for any help.
>
> Thomas
>
> PS: Here is the command line output of compiling and linking my 
> BootLoader with a Makefile:
>
> P:\>make
>
> -------- begin --------
> avr-gcc (GCC) 4.1.1 (WinAVR 20070122)
> Copyright (C) 2006 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There 
> is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR 
> PURPOSE.
>
> Compiling: BootLoader.c
> q:/bin/avr-gcc -c -mmcu=atmega2561 -I. -gstabs -DBOOTSIZE=4096 
> -DF_CPU=14745600UL  -Os -funsigned-char -funsigned-bitfields 
> -fpack-struct -fshort-enums -Wall -Wstrict-prototypes 
> -Wa,-adhlns=BootLoader.lst   -MD -MP -MF .dep/BootLoader.o.d 
> BootLoader.c -o BootLoader.o
>
> Compiling: uart.c
> q:/bin/avr-gcc -c -mmcu=atmega2561 -I. -gstabs -DBOOTSIZE=4096 
> -DF_CPU=14745600UL  -Os -funsigned-char -funsigned-bitfields 
> -fpack-struct -fshort-enums -Wall -Wstrict-prototypes 
> -Wa,-adhlns=uart.lst -MD -MP -MF .dep/uart.o.d uart.c -o uart.o
>
> Compiling: memory.c
> q:/bin/avr-gcc -c -mmcu=atmega2561 -I. -gstabs -DBOOTSIZE=4096 
> -DF_CPU=14745600UL  -Os -funsigned-char -funsigned-bitfields 
> -fpack-struct -fshort-enums -Wall -Wstrict-prototypes 
> -Wa,-adhlns=memory.lst   -MD -MP -MF .dep/memory.o.d memory.c -o memory.o
>
> Linking: BootLoader.elf
> q:/bin/avr-gcc -mmcu=atmega2561 -I. -gstabs -DBOOTSIZE=4096 
> -DF_CPU=14745600UL  -Os -funsigned-char
> -funsigned-bitfields -fpack-struct -fshort-enums -Wall 
> -Wstrict-prototypes -Wa,-adhlns=BootLoader.o   -MD -MP -MF 
> .dep/BootLoader.elf.d BootLoader.o uart.o memory.o  --output 
> BootLoader.elf -Wl,-Map=BootLoader.map,--cref    -lm 
> -Wl,--section-start=.text=0x3E000
>
> Creating load file for Flash: BootLoader.hex
> q:/bin/avr-objcopy -O ihex -R .eeprom BootLoader.elf BootLoader.hex
>
> Creating Extended Listing: BootLoader.lss
> q:/bin/avr-objdump -h -S BootLoader.elf > BootLoader.lss
>
> Creating Symbol Table: BootLoader.sym
> q:/bin/avr-nm -n BootLoader.elf > BootLoader.sym
>
> Size after:
> BootLoader.elf  :
> section      size       addr
> .data       0x18a   0x800200
> .text       0x960    0x3e000
> .bss        0x102   0x80038a
> .stab      0x195c        0x0
> .stabstr    0xfcb        0x0
> Total      0x3513
>
> Errors: none
> -------- end --------
>
>
>
>
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