YTM32B1MD1_SafLib_3_0_0 Release Notes

Frankie

1. Overview

YUNTU SafLib (Safety Library) provides peripheral self-tests and software safety mechanisms for AUTOSAR application integration. This document describes SafLib 3.0.0 for YTM32B1MD1.

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

Item	Previous Release / Baseline	Current Release (3.0.0)
SafLib Version	2.0.0	3.0.0
Target Device	YTM32B1MD1	YTM32B1MD1
AUTOSAR CP	v4.4.0	v4.4.0
MCAL Dependency	See the previous release notes	MCAL 3.0.0 (required)

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

IDE / Compiler	Minimum Version	Notes
IAR	v9.50
VSCode (Ninja + CMake + GCC/IAR)	VSCode v1.80	Cross-platform build system
GCC for ARM	v10.3
Green Hills	v2022.1.4

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 YTM32B1MD1:

[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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