- 引言
我們知道AUTOSAR OS規範是在OSEK OS基礎上補充完善實現的，在OSEK OS規範中對帶狀態返回值的API進行了約束，類型爲StatusType，正常情況下返回值爲E_OK，定義E_OK爲0，其他若干非正常情況進行了歸類並分別統一了錯誤碼形式，AUTOSAR OS在其基礎上進行了補充，也就是說在每個API中什麼情況下該回什麼樣的錯誤碼是已規定的，本文將所有錯誤碼進行總結。
其中 OSEK OS相關內容如下：
StatusType
This data type is used for all status information the API services offer. Naming convention:
all errors for API services start with E_. Those reserved for the operating system will begin
with E_OS_.
The normal return value is E_OK which is associated with the value 0.
The following error values are defined:
All errors of API services:
• E_OS_ACCESS = 1,
• E_OS_CALLEVEL = 2,
• E_OS_ID = 3,
• E_OS_LIMIT = 4,
• E_OS_NOFUNC = 5,
• E_OS_RESOURCE = 6,
• E_OS_STATE = 7,
• E_OS_VALUE = 8
If the only possible return status is E_OK, the implementation is free not to return a status;
this is not separately stated in the description of the individual services.
Internal errors of the operating system:
These errors are implementation specific and not part of the portable section. The error names
reside in the same name-space as the errors for API services mentioned above. The
implementations has to ensure that the range of numbers does not overlap.
To show the difference in use, the names internal errors shall start with E_OS_SYS_
- 錯誤碼
|
序號 |
錯誤碼 |
描述 |
|
1 |
E_OS_ACCESS |
Access to the service/object denied |
|
2 |
E_OS_CALLEVEL |
Access to the service from the ISR is not permitted |
|
3 |
E_OS_ID |
Object ID is invalid |
|
4 |
E_OS_LIMIT |
Limit of services/objects exceeded |
|
5 |
E_OS_NOFUNC |
The object is not used, service rejected |
|
6 |
E_OS_RESOURCE |
Task still occupies resource |
|
7 |
E_OS_STATE |
The state of the object is not correct for the required service |
|
8 |
E_OS_VALUE |
Value outside of the admissible limit |
|
9 |
E_OS_STACKFAULT |
A stack fault detected via stack monitoring by the OS |
|
10 |
E_OS_PARAM_POINTER |
A pointer argument OS an API is null |
|
11 |
E_OS_DISABLEDINT |
A service of the OS is called inside an interrupt disable/enable pair |
|
12 |
E_OS_SERVICEID |
Service can not be called |
|
13 |
E_OS_ILLEGAL_ADDRESS |
An invalid address is given as a parameter to a service |
|
14 |
E_OS_MISSINGEND |
Tasks terminates without a TerminateTask() or ChainTask() call |
|
15 |
E_OS_PROTECTION_MEMORY |
A memory access violation occurred |
|
16 |
E_OS_PROTECTION_TIME |
A Task/Category 2 ISR exceeds its execution time budget |
|
17 |
E_OS_PROTECTION_ARRIVAL |
A Task/Category 2 ISR arrives before its timeframe has expired |
|
18 |
E_OS_PROTECTION_LOCKED |
A Task/Category 2 ISR blocks for too long |
|
19 |
E_OS_PROTECTION_EXCEPTION |
A trap occurred |
|
20 |
E_OS_CORE |
Core is not available |
|
21 |
E_OS_SPINLOCK |
De-scheduling with occupied spinlock |
|
22 |
E_OS_INTERFERENCE_DEADLOCK |
Deadlock situation due to interference |
|
23 |
E_OS_NESTING_DEADLOCK |
Potential deadlock due to wrong nesting |
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