Re: [avr-gcc-list] Writing to flash memory from bootloader

[E. Weddington]

On 8 Mar 2004 at 0:19, Ganeriwal Saurabh wrote:

> 
> hi,
> 
> I have been trying to get the APIs provided in boot.h working on atmega128
> but without any success. I use the boot_test function defined in boot.h. I
> have added the following things to it.
> 
> 1. Define the function to lie in .bootloader section
> void boot_test(void) BOOTLOADER_SECTION;
> 
> 2. Define the starting point of the bootloader section to be 0xF000 in
> makefile.
> LDFLAGS = atmega128 -Wl,--section-start=.bootloader=0xF000
> 

WARNING: The Atmel data sheets give the bootloader addresses as WORD addresses. 
The 
GNU tools use BYTE addresses. So loading the .bootloader section to 0xF000 is 
incorrect. 
Multiply the value by 2: 0x1E000

Eric

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