sc_passkey_round
return sc_passkey_round(smp, 0);
if (sc_passkey_round(smp, smp_op))
return sc_passkey_round(smp, SMP_CMD_PAIRING_CONFIRM);
return sc_passkey_round(smp, SMP_CMD_PAIRING_RANDOM);
return sc_passkey_round(smp, SMP_CMD_PUBLIC_KEY);