XMC_SCU_UnlockProtectedBits() seems to be dangerous

[User7804]

Hi all,

void XMC_SCU_UnlockProtectedBits(void)
{
  SCU_GENERAL->PASSWD = SCU_GCU_PASSWD_PROT_DISABLE;

  while(((SCU_GENERAL->PASSWD) & SCU_GENERAL_PASSWD_PROTS_Msk))
  {
    /* Loop until the lock is removed */
  }
}

IMO checking PROTS after unlocking is useless and dangerous: If an interrupt (taking more than 32 MCLK cycles) happens after unlocking, the funcion will wait forever.

Any idea what the author wanted to achieve with the PROTS query?

Oliver

[Travis]

If i remember correctly, after 32 clock cycles it will go back to LOCK state.

[User7804]

Hello Travis,

please read again my posting: " If an interrupt (taking more than 32 MCLK cycles) happens after unlocking, the function will wait forever."