ST STM32L4 Series, User Manual

Page: 67 / 110

Table 117. RTC_SM_3
SM CODE RTC_SM_3
Description Application-level measures to detect failures in timestamps/event capture
Ownership End user
Detailed implementation
This method must detect failures affecting the RTC capability to correct execute the
timestamps/event capture functions. Due to the nature strictly application-dependent of this
solution, no detailed guidelines for its implementation are given here.
Error reporting Depends on implementation
Fault detection time Depends on implementation
Addressed fault model Permanent/transient
Dependency on Device configuration None
Initialization Depends on implementation
Periodicity Periodic/On demand
Test for the diagnostic Not applicable
Multiple-fault protection CPU_SM_0: Periodic core self-test software
Recommendations and known limitations
This method must be used only if the timestamps/event capture function is used in the
safety function implementation. It is worth noting that the use of timestamp / event capture in
safety-related applications with the
MCU in Sleep or Stop mode is prevented by the assumed
requirement ASR7 (refer to Section 3.3.1 Safety requirement assumptions ).
3.6.34 Inter-integrated circuit (I2C)
Table 118. IIC_SM_0
SM CODE IIC_SM_0
Description Periodic read-back of configuration registers
Ownership End user
Detailed implementation
This method must be applied to I2C configuration registers.
Detailed information on the implementation of this method can be found in
Section 3.6.14 Extended interrupt and events controller (EXTI) .
Error reporting Refer to NVIC_SM_0
Fault detection time Refer to NVIC_SM_0
Addressed fault model Refer to NVIC_SM_0
Dependency on Device configuration Refer to NVIC_SM_0
Initialization Refer to NVIC_SM_0
Periodicity Refer to NVIC_SM_0
Test for the diagnostic Refer to NVIC_SM_0
Multiple-fault protection Refer to NVIC_SM_0
Recommendations and known limitations Refer to NVIC_SM_0
Table 119. IIC_SM_1
SM CODE IIC_SM_1
Description Protocol error signals
Ownership ST
UM2305
Hardware and software diagnostics
UM2305 - Rev 10
page 67/110