Страница 1 мировой engineering стандарты общая спецификация

Page 123
GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
© Copyright 2010 General Motors All Rights Reserved
February 2010
Page 123 of 336
ENDIF
\* Check whether any memory address in the requested interval is protected, restricted (by Security
Status) or invalid*/
FOR (Memory_Address ←
messageAddress TO (messageAddress + memorySize- $01) BY $01)
IF ((Memory_Address is restricted) OR (Memory_Address is Invalid) OR
((Memory_Address is secure) AND (Security_Access_Unlocked = FALSE))) THEN
Bad_Address ←
TRUE
Memory_Address ←
(messageAddress + memorySize) /* exit for loop */
send Negative Response ($7F $23 $31) /*Request Out Of Range */
ELSE
IF (operating conditions do not allow access to memory address)
send Negative Response ($7F $23 $22) /* Condition Not Correct */
Memory_Address ←
(messageAddress + memorySize) /*exit for loop*/
Bad_Address ←
TRUE
ELSE
memoryDataRecord[Index] ←
Memory_Address.data
Index ←
(Index + 1)
ENDIF
ENDIF
ENDFOR
IF (Bad_Address = FALSE) THEN
/* send positive response message */
send ($63 $MA_B1 $MA_B2 ... $memoryDataRecord[0]... $memoryDataRecord[m])
ENDIF
ENDIF
ENDFUNCTION
8.7.7 Node Verification Procedure.
Procedure 1:
1. Request one valid memory address which is not restricted, and non-secured (MS = $0001). Verify the
proper positive response.
2. Request the maximum number of consecutive addresses allowed by the ECU (max value is the lesser of
the NWL buffer size or 4094, minus the number of bytes in the memoryAddress parameter) starting at a
memory address which will result in all addresses being valid, not restricted, and not secure. Verify the
proper positive response.
3. If applicable, send a request to an unlocked ECU for an address range that is completely valid, not
restricted, and includes secure locations. Verify the proper positive response.
Procedure 2:
1. Send a request with less than the required number of data bytes (3 + the number of bytes in the
memoryAddress parameter), verify negative response ($7F $23 $12).
2. Send a request with more than the required number of data bytes (3 + the number of bytes in the
memoryAddress parameter), verify negative response ($7F $23 $12).
3. Send a request with a valid SA and a MS that results in an invalid ECU address. Verify negative response
($7F $23 $31).
4. Send a request with valid SA and MS = 0. Verify the negative response ($7F $23 $31).
5. Send a request with a MS greater than the maximum MS supported by the ECU. Verify the negative
response ($7F $23 $31).
6. If applicable, send a request with a valid range of non secure addresses that includes at least one
restricted address. Verify negative response ($7F $23 $31).

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