Requirements on I/O Hardware Abstraction, No.75, 2021-11

AUTOSAR R21-11記事一覧はこちら。

AUTOSAR 21-11,160文書読んだ。2022年5月中に全部読み。

AUTOSAR 21-11, 62文書読んだ。2022年5月中に半分到達予定。

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用語(terms)

Term	Description	Example
Class	A class represents a kind of electrical connection to the ECU. It could be for example an analogue, a discrete,…	Analogue Class, Discrete Class…
Electrical Signal	It is the electrical signal on the pin of the ECU	Physical input voltage at an ECUPin
ECU pin	It is an hardware electrical connection of the ECU with the rest of the electronic system
ECU Signals	It is the software representation of an electrical signal. A signal has attributes and a symbolic name	Input voltage,Discrete Output, PWM Input …
ECU Signal group	It is the software representation of a group of electrical signals from the same Class	Only for discrete Inputs and discrete Outputs
Attributes	Characteristics that can be Software (SW) and Hardware (HW) for each kind of Signals existing in a ECU	Range, Lifetime / delay, …
Symbolic name	The symbolic name of a signal is used by the IO Hardware Abstraction module to make a link (function, pin)
Data Type	Analogue: Datatype of the signal Discrete: either bool or AUTOSAR defined type (BoolType)	(VoltageType, CurrentType, ResistanceType, BoolType) Each DataType has a given size: 16 bits or 32 bits
Range	This is a functional range and not an electrical range.) For analogue signals [lowerLimit...upperLimit] (Voltage, current), [0...upperLimit] (resistance) For discrete signals [0,1] For timing signals [0…upperLimit] (period), [- 100…100%] (Duty Cycle)	[-12Volts...+12Volts] (voltage)
Resolution	This attribute for many Classes is dependent on the range and the Data Type. Example: (upperLimit - lowerLimit) / (2datatypelength -1) For the others is known and defined.	Voltagemin = -12 Volts Voltagemax = 12 Volts Data Type : 16 bits Resolution => 24 / 65535
Hardware Resolution	This is the maximum possible resolution of the hardware (ADC)	ADC converter could have a 8/10/12/16 bits resolution
Hardware Accuracy	This is the accuracy of Hardware. It depends on hardware peripheral used for acquisition and/or generation	ADC converter could have an accuracy of +-3LSB
Accuracy	It depends of hardware peripheral used for acquisition and/or generation.	ADC converter could be a a 8/10/12/16 bits converter
Diagnosis	Diagnosis capability of the functionality	Diagnosis Not Supported (could be a static check) No valid information available Short to Power Supply Short to Ground Open Load Over Temperature Diagnosis OK
Synchronization	A signal could be synchronize with another signal or with an event like a trigger	If a discrete signal is “TRUE”, acquire an analogue signal
Access	Defines if the Signal is attached to a Get(Read) / Set(Write) feature.
Inversion	Inversion between the physical value and the logical value. This attribute is not visible and not configurable by users of IO Hardware Abstraction.	Physical HighState -> (Signal=False) Physical LowState -> (Signal=True)
Lifetime	Only for Inputs: It is the maximum allowed age of the data (time is in microseconds). If Lifetime is 0, then the signal is directly get from the register.	Lifetime = 0 is a direct access Lifetime = 1000µs the value read is at maximum 1ms older
Delay	Only for Outputs: It is the maximum allowed time until an output is actually set (time is in microseconds) If Delay is 0, then the signal is set immediately	Delay = 0 is a direct access Delay = 100µs the command is set until 100µs elapse
Filtering /Debouncing	It defines if the Signal is provided as a raw value or if a filtering/debouncing method is included in the IO Hardware Abstraction module for this Signal.	Raw, Debounce 3 Samples, Wait 10ms,
Sampling Rate	Time period required to get a Signal value.	Sampling rate for a sampling windows (burst)
Report Changes	This attribute is only applicable to Discrete Inputs. It defines the capability (or not) of reporting level changes.	Enable or Disable
Pulse Test	This attribute means that the output shall be	tested thanks a dedicated pulse. If this attribute is not set, diagnosis will be done while using the output.

英日

日本語は仮訳

T.B.D.

参考(reference)

[1] Layered Software Architecture
AUTOSAR_EXP_LayeredSoftwareArchitecture.pdf
[2] Software Standardization Template
AUTOSAR_TPS_StandardizationTemplate.pdfAUTOSAR 英語単語帳参考文献 AdventCalendar2022