Accelerate Safety Compliance
Arm Software Test libraries (STL) complement Arm’s functional safety technology which supports systematic capability for ISO26262 ASIL D. STLs are efficient assembly language routines that test for the presence of faults when executing on Arm-based processors at startup and during run time. A single straightforward C language application programmer interface (API) lets developers quickly and easily scale test functions across multiple CPU systems.
Features and Benefits
Arm Software Test Libraries undergo an extensive functional safety assessment process, that helps developers shrink time to market and give them the confidence their system will meet industry safety standards.
Boot diagnostics (which can be destructive) only execute as the system is coming online when there is less of a real-time execution requirement, thus avoiding the chance of mishap in a running system.
Runtime diagnostics execute during normal system operation and therefore must not destroy any data and must complete their function in a defined time, called the worst-case execution time.
Industry standards require that diagnostics test for the widest possible number of faults. Arm’s in-depth knowledge of its processors means we offer top-class diagnostic coverage of potential faults.
Arm Software Test Libraries have size-optimized code and require fewer memory resources, leaving more available for the target application software and helping to reduce cost.
Arm Software Test Libraries take maximum advantage of built-in processor features that enable rapid test execution and short test granularity reducing impact on other system functions.
Easing Flexible Functional Safety Checking
Vehicle Functional Safety
Faults and failures may be life threatening, so automotive systems are demanding higher levels of functional safety than ever before. Today, it’s vital to enable functional safety from classic automotive applications, such as anti-lock braking systems to sophisticated advanced driver-assistance systems (ADAS) and autonomous driving. Arm Software Test Libraries allow checks to be performed for some functions without the need for high levels of redundant hardware.
Flexible Processor Diagnostics
Software Test Libraries provide a mechanism to deploy testing of the processor while minimizing the impact on the application. They can be run at start-up to confirm correct function before the safety application begins executing. They can also be configured to test during the execution of the application. Impact on the application is minimized as there is no need to reboot the processor after testing. Tests can be triggered in a complete block or as short bursts, which allows checking to be performed whenever time permits.
Application Development
Arm Software Test Libraries can be easily integrated into applications by using a standard API and scheduler with bare-metal implementation or with the OS, allowing appropriate action whenever the libraries detect a designated fault. Together with a hypervisor, they can help ensure software separation for simplified integration.
Talk with an Expert
If you have any questions about Software Test Libraries or functional safety for Arm-based devices, talk to an Arm expert.
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