ST STM32L4 Series User Manual

SM CODE DIAG_SM_0
• interrupt/NMI enable (if used for diagnostic error management)
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
3.6.11 Direct memory access controller (DMA/ DMA2D/ DMAMUX))
Table 52. DMA_SM_0
SM CODE DMA_SM_0
Description Periodic read-back of configuration registers
Ownership End user
Detailed implementation
This method must be applied to DMA configuration register and channel address register.
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 53. DMA_SM_1
SM CODE DMA_SM_1
Description Information redundancy on data packet transferred via DMA
Ownership End user
Detailed implementation
This method is implemented by adding, to data packets transferred by DMA, a redundancy
check (such as CRC check or similar one) with encoding capability. Full data packet
redundancy would be an overkill.
The checksum encoding capability must be robust enough to guarantee at least 90%
probability of detection for a single bit flip in the data packet.
Consistency of data packet must be checked by Application software before consuming data.
Error reporting Depends on implementation
Fault detection time Depends on implementation
UM2305
Hardware and software diagnostics
UM2305 - Rev 10
page 35/110

ST STM32L4 Series Specifications

General

Brand	ST
Model	STM32L4 Series
Category	Microcontrollers
Language	English