init_subfun.c

来自「TMS320C6416的BOOTLOADER程序代码」· C语言 代码 · 共 23 行

void erase_flash()
{ int aa;
  flash_adr1=(unsigned volatile char *)0x64005555;
  flash_adr2=(unsigned volatile char *)0x64002aaa;
  *(unsigned volatile char *)flash_adr1=0x00aa;
  *(unsigned volatile char *)flash_adr2=0x0055;
  *(unsigned volatile char *)flash_adr1=0x0080;
  *(unsigned volatile char *)flash_adr1=0x00aa;
  *(unsigned volatile char *)flash_adr2=0x0055;
  *(unsigned volatile char *)flash_adr1=0x0010;
  for(aa=0;aa<150;aa++)
   {asm(" nop ");}
  *(unsigned volatile char *)flash_adr1=0x00aa;
  *(unsigned volatile char *)flash_adr2=0x0055;
  *(unsigned volatile char *)flash_adr1=0x0090;   
  for(aa=0;aa<150;aa++)
   {asm(" nop ");}
  *(unsigned volatile char *)flash_adr1=0x00aa;
  *(unsigned volatile char *)flash_adr2=0x0055;
  *(unsigned volatile char *)flash_adr1=0x00f0;
  for(aa=0;aa<150;aa++)
   {asm(" nop ");}
   }