Страница 1 мировой engineering стандарты общая спецификация

GMW3110
8.8.6.2 Node Interface Pseudo Code.
Powerup States:
SPS_Bad_Key_Counter ←
2
SPS_Security_Key_Allowed ←
FALSE
DevCtrl_Bad_Key_Counter ←
2
DevCtrl_Security_Key_Allowed ←
FALSE
DeviceContol_Security_Level ←
SERVICE
IF ((Vulnerability_flag=$FF) OR (manufacturers_enable_counter > 0))THEN
Security_Delay_Timer ←
0
ELSE
Security_Delay_Timer ←
10
ENDIF
Each time a $27 message is received, the following logic is executed:
BEGINFUNCTION Serv_27_Msg_Recvd()
IF (more than P2
C 
ms is needed to process this request) THEN
send Negative Response ($7F $27 $78) /* RequestCorrectlyReceived-ResponsePending */
ENDIF
IF ( $Level != $00 AND $Level != $FF AND
(($Level MOD 2=$01 AND message_data_length = 2) OR
($Level MOD 2=$00 AND message_data_length = 4))) THEN
SELECT FIRST
WHEN ($Level=$01)
IF (Security_Delay_Timer > 0) THEN
Send ($7F $27 $37) /* Time Delay Not Expired */
ELSE
IF ((Vulnerability_flag=$FF) OR (manufacturers_enable_counter > 0)) THEN
Security_Access_Unlocked ←
TRUE
ENDIF
IF (Security_Access_Unlocked=TRUE) THEN
TesterPresent_Timer_State ←
ACTIVE
Send ($67 $01 $00 $00) message
ELSE
Send ($67 $01 $Seed) message
SPS_Security_Key_Allowed ←
TRUE
ENDIF
ENDIF
WHEN ($Level=$02)
IF (SPS_Security_Key_Allowed=TRUE) THEN
SPS_Security_Key_Allowed ←
FALSE
IF ($Key does not match stored key) THEN
SPS_Bad_Key_Counter ←
SPS_Bad_Key_Counter - 1
IF (SPS_Bad_Key_Counter = 0) THEN

---

25.06.2020
WORLDWIDE ENGINEERING STANDARDS General Motors Local Area Network Enhanced Diagnostic Test Mode Specification
https://translate.googleusercontent.com/translate_f
117/298
© Copyright 2010 General Motors All Rights Reserved
February 2010
Page 131 of 336
Security_Delay_Timer ←10 s
SPS_Bad_Key_Counter ←
1
send ($7F $27 $36) /* for Exceeded Number Of Attempts */
--``,,``````,``,,``,,,`,`,`,,-`-`,,`,,`,`,,`---