ST STM32L4 Series User Manual

3.6.12 Chrom-Art Accelerator controller (DMA2D)
Table 57. DMA2D_SM_0
SM CODE DMA2D_SM_0
Description Periodic read-back of configuration registers
Ownership End user
Detailed implementation
This method must be applied to DMA2D 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 58. DMA2D_SM_1
SM CODE DMA2D_SM_1
Description Periodic software test for DMA2D functions
Ownership End user
Detailed implementation
This method requires the periodical testing of the DMA2D basic functionality, implemented
through a deterministic transfer and processing of a set of test images from memory to
memory and the checking of the correct execution (output image must be generated as
per specifications). Output image correctness can be performed by fast methods like CRC
fingerprint computation.
Test definition must be able to cover following DMA2D basic functions:
• full image copy
• image filling with a specific color
• copy of part of the image
• pixel format conversion
• blending of two different images
Achieved diagnostic coverage on the module depends on the quantity and variance of tests
performed.
Error reporting Depends on implementation
Fault detection time Depends on implementation
Addressed fault model Permanent
Dependency on Device configuration None
Initialization Depends on implementation
Periodicity Periodicity
Test for the diagnostic Not applicable
Multiple-fault protection CPU_SM_0: Periodic core self-test software
Recommendations and known limitations
In principle, DMA2D basic functions not used in the safety application can be excluded from
this test suite implementation.
UM2305
Hardware and software diagnostics
UM2305 - Rev 10
page 38/110

ST STM32L4 Series Specifications

General

Brand	ST
Model	STM32L4 Series
Category	Microcontrollers
Language	English