mega16 boot loader

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楼主 | 2015-11-6 19:42 | 只看该作者回帖奖励

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boot, Loader, mega16, unsigned, TE

跪求大神指导！！！我把这个boot loader程序烧进去为什么看不到从0x0080~0x0100处从0~127！！！求大神指导我错在哪里！！！我不甚感激谢谢你了
#include "iom16v.h"
#include "macros.h"

#define Con_true 1

void iap (void);

union char_int
{
unsigned char chr_dat[2];
unsigned int int_dat;
};

#define char_h 1
#define char_l 0

void write_rw_ok(void)
{
while(SPMCR&0x40)
{
while(SPMCR&0x01);
SPMCR=0x11;
asm("spm\n");
}

}

void main (void)
{

iap();
}

void fill_tb (unsigned int dat, unsigned int addr)
{
unsigned char lw,hi;
hi=addr>>8;
lw=addr;
asm("mov R31,%hi");
asm("mov R30,%lw");
hi=dat>>8;
lw=dat;
asm("mov R1,%hi");
asm("mov R0,%lw");
asm("ldi R16,0x01");
asm("sts 0x57,R16");
asm("spm");
while(SPMCR&(1));
}

void erase_page (unsigned int addr)
{
unsigned char lw,hi;
hi=addr>>8;
lw=addr;
asm("mov R31,%hi");
asm("mov R30,%lw");
asm("ldi R16,0x03");
asm("sts 0x57,R16");
asm("spm");
write_rw_ok();
}

void prog_page (unsigned int addr)
{
unsigned char lw,hi;
hi=addr>>8;
lw=addr;
asm("mov R31,%hi");
asm("mov R30,%lw");
asm("ldi R16,0x05");
asm("sts 0x57,R16");
asm("spm");
write_rw_ok();
}

void iap (void)
{
unsigned char counter;
union char_int iap_dat;

CLI();

for(counter = 0 ; counter < 64; counter++)    //缓冲页面填充
{
iap_dat.chr_dat[char_h] = counter*2+1;
iap_dat.chr_dat[char_l] = counter*2;
fill_tb(iap_dat.int_dat, (unsigned int)(2*counter));
}

erase_page(0x0080);                            //页面擦除
prog_page(0x0080);                            //页面写入

while(Con_true);                               //由于FLASH第一个页面已经擦除,程序无法返回main函数
}

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