Hello,
I am writing the flash burnner program for my own board. I can debug it by using ARM SDT2.51, i.e. load my program to RAM (0x0c000000) and execute it. "Hello World" (LED-blinking) is working. Currently I try to burn the "hello world" to flash (0x00000000). My method is to load the flash burnner to RAM and run it and copy "hello world" to flash.
But when I want writing the sequence to flash, like following, I always failed. The debugger told me "This instruction refer to memory "0x00000000" ... that memory is read only...". (This similiar error imformation is got when uninitialized pointer is refered. But I don't refer an uninitialized pointer)
What could be the problem?
/* Erase the whole chip SST39VF160*/ WRITEREGW(0x5555, 0xaaaa); WRITEREGW(0x2aaa, 0x5555); WRITEREGW(0x5555, 0x8080); WRITEREGW(0x5555, 0xaaaa); WRITEREGW(0x2aaa, 0x5555); WRITEREGW(0x5555, 0x1010);
Thanks,
Adrian