MPC5634M

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MPC5634M  如何将数据写到内部flash中，用官方的程序修改了  写MCR LMLR 都写不进去   哪位朋友指点一下?


int main(void) {

  uint32_t i=0; /* Dummy idle counter */
  
  uint32_t mem_write_code [] = {
    0x90640000, /* stw r3,(0)r4 machine code; writes r3 contents to addr in r4 */
    0x7C0006AC, /* mbar machine code: ensure prior store completed */
    0x4E800020  /* blr machine code: branches to return address in link register */
   };

  typedef void (*mem_write_code_ptr_t)(uint32_t, uint32_t);
          /* create a new type def: a func pointer called mem_write_code_ptr_t */
          /* which does not return a value (void) */
          /* and will pass two 32 bit unsigned integer values */
          /* (per EABI, the first parameter will be in r3, the second r4) */

  (*((mem_write_code_ptr_t)mem_write_code))     /* cast mem_write_code as func ptr*/
                                 /* * de-references func ptr, i.e. converts to func*/
     (FLASH_CONFIG_DATA_LMLR_R,            /* which passes integer (in r3) */
      (uint32_t)&FLASH_CONFIG_REG_LMLR); /* and address to write integer (in r4) */
  enable_accel_BTB();            /* Enable branch accel., branch target buffers */

  while(1) {i++;}                /* Wait forever */
}

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