YUNTU SafLib (Safety Library) provides peripheral self-tests and software safety mechanisms for AUTOSAR application integration. This document describes SafLib 3.0.0 for YTM32B1ME0.

Required dependency: MCAL 3.0.0. SafLib 3.0.0 must be integrated with MCAL 3.0.0.

1.1 Release Type

Major Version — SafLib 3.0.0.

Status: Internal Release Notes | Release Date: TBC | Issue Snapshot: 2026-10-28

1.2 Release Highlights

• CorTst Reliability — Fixed exclusive-access, floating-point conversion, exception-stack and SysTick test failures under interrupt or OS/FPU context conditions.
• DmaTst Configuration — Improved startup-test defaults, runtime-test configuration and DMA channel validation.
• ClkTst Frequency Tolerance — Added a configurable tolerance for enabled clock sources; zero remains the default.
• CrcTst Verification — Added FLASH signature verification configuration for SQT.
• Stack Monitoring — Added hardware stack overflow detection and StkTst_GetDetailsResult() to distinguish MSP and PSP overflow.
• MCAL Integration — Safety MCAL 3.0.0 adaptation covers Resource configuration, module MemMap, regression tests and demos.
• EccTst Interrupt Handling — Fixed application hangs when ECC flags are already pending before the test; the ISR is installed before interrupts are enabled.

1.3 Version Evolution

2. Support Toolchains

YUNTU SafLib software package uses the following toolchains / IDEs:

2.1 Recommended Configuration Tool

• YCT (Yuntu Config Tool) v3.2.0 or higher version

Tip: YCT can be downloaded from YTMicro Account or updated from an installed older version.

2.2 Recommended IDE / Compilers

2.3 Recommended Debugger

• SEGGER J-LINK v9.2 or higher hardware + v6.96 or higher software/driver
  • Required: target-device support patch installed

3. Release List

The following list summarizes changes for YTM32B1ME0:

• [Opt]-[SafLib]-[4] Adapt SafLib resources, SchM MemMap, regression tests and demos to Safety MCAL 3.0.0
• [Fix]-[CorTst]-[2] Fix false Load/Store test failures caused by interrupts clearing the exclusive monitor
• [Fix]-[CorTst]-[2] Fix floating-point conversion test failures when the OS disables FPCCR.ASPEN
• [Fix]-[CorTst]-[2] Fix FPSCR comparison failures in the floating-point exception stack test by preserving the post-exception snapshot
• [Fix]-[CrcTst]-[1] Add CrcTst SQT configuration for signature verification in FLASH
• [Opt]-[DmaTst]-[1] Improve DmaTst YCT defaults, runtime configuration and DMA channel validation
• [Opt]-[ClkTst]-[1] Add configurable frequency tolerance for each enabled clock source, with a default value of zero
• [New]-[StkTst]-[0] Add hardware stack overflow detection using MSPLIM/PSPLIM and configurable reporting
• [New]-[StkTst]-[0] Add StkTst_GetDetailsResult() and its YCT switch to distinguish MSP and PSP overflow
• [Fix]-[CorTst]-[1] Fix intermittent SysTick exception test failures under frequent interrupts by waiting after the pending request
• [Fix]-[EccTst]-[3] Fix EccTst application hangs caused by pending ECC flags by installing the ISR before enabling interrupts and clearing interrupts after the test

Type labels for CorTst-ISSUE-165, CorTst-ISSUE-166, CorTst-ISSUE-167, CrcTst-ISSUE-168, CorTst-ISSUE-186, EccTst-ISSUE-189 are classified from the issue content because the source Type field is empty.

4. Known Issues / Limitation

4.1 Integration Notes

• EccTst (EL3): Update EccTst wherever the module is used. Install the ISR before enabling ECC interrupts, then execute the test and clear interrupts. Revalidate startup and boot-to-application paths with ECC flags already pending.
• CorTst: Revalidate the affected tests with the target OS, interrupt load and FPU context settings. Follow the effect levels in Section 3.
• DmaTst: Regenerate and review configuration for startup-test defaults, the minimum hardware-channel count, the single runtime container and channel-link constraints.
• ClkTst: The tolerance value defaults to zero. Select any nonzero value according to the clock specification and project safety analysis.
• MCAL Integration: Confirm Resource and module MemMap changes, SUT/SIT/SQT regression and demo updates when integrating Safety MCAL 3.0.0.
• Release Baseline: Confirm the 3.0.0 version record, package identifier, delivery contents and regression reports. Issue closure does not replace release-package qualification evidence.

Annex

Release list naming rule

Each release list item contains the following elements:

[Type]-[Module]-[Effect_Level] [Brief Description / Details Link]

• Type: Fix — bug fixes; Opt — optimization; New — new functionality; Demo — demonstration projects; Doc — documentation updates.
• Module: The SafLib module affected by the change. Module names in this document do not constitute a complete device support matrix.
• Effect_Level:
  • 0: No effect on the previous software version / project.
  • 1: Update recommended but optional.
  • 2: Update the affected module if the application uses the related functionality.
  • 3: Update the affected module if it is used.
  • 4: Update if the software package is used.
  • TBC: The source issue does not specify an effect level.
• Details Link: The linked YT_SafLib issue provides the analysis, corrective action and verification records.

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