RE: [avr-gcc-list] Problems with bootloader

[Yannick PODGORSKI]

Hi,

I suppose you have done this :

 

In Makefile :
DFLAGS = -Wl,-Ttext=0x1E000 to put all code at this @.

With AVRStudio, program the fuses :
BOOTRST = 0 (reset at @ 0x1E000)
BOOTSZ = 00 (4096 words for BLS)

At start of code, program :
MCUCR = (1<<IVCE);
MCUCR = (1<<IVSEL); to put interrupt vector in LBS

You can try :

void pageErase(uint16_t page)
{
    cli();
    eeprom_busy_wait();
    boot_page_erase(page);
    boot_spm_busy_wait();
    sei();
}

 

Or

 

void WritePage(uint16_t page)
{
    cli();
    eeprom_busy_wait();
    boot_page_erase(page);

 

    //fille temporary buffer

    for(uint16_t i=0; i< SPM_PAGESIZE; i+=2){

        boot_page_fill(page + i, i);

    }

    boot_page_write(page);

    boot_spm_busy_wait();
    boot_rww_enable();

    sei();
}

 

Hope that helps.

 

Yannick.

 

---

De : address@hidden [mailto:address@hidden De la part de Ollinad
Envoyé : lundi 17 octobre 2005 23:43
À : address@hidden
Objet : [avr-gcc-list] Problems with bootloader

Hi people,

I'm trying to write a bootloader for the at90can128 
and I'm having problems. The biggest one is that I can't write to the flash, 
I've tried everything and nothing works. So I gave up and tried to erase a flash 
page, nothing too...

void pageErase(uint16_t 
page)
{
    cli();
    
boot_spm_busy_wait();
    
boot_page_erase(page);
    
boot_spm_busy_wait();
    sendChar('F');
    
while (1);
}

this is the function I use to erase a page, I'm using the 
functions from the boot module of the libc.

thanks for your help,

-- 
Mr. Santos, Danillo Moura  - Computer Science 
Student - 
UFSC
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