3.6.30 Digital camera interface (DCMI)
Table 112. DCMI_SM_0
SM CODE DCMI_SM_0
Description Periodical read-back of DCMI configuration registers
Ownership End user
Detailed implementation
This method must be applied to DCMI configuration registers.
Detailed information on the implementation of this method can be found in Section 3.6.5
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 MCU configuration DCMI interface is available only on selected part numbers
Initialization Refer to NVIC_SM_0
Periodicity Refer to NVIC_SM_0
Test for the diagnostic Refer to NVIC_SM_0
Multiple faults protection Refer to NVIC_SM_0
Recommendations and known limitations Refer to NVIC_SM_0
Table 113. DCMI_SM_1
SM CODE DCMI_SM_1
Description DCMI video input data synchronization
Ownership ST
Detailed implementation
According to the nature of video data stream received, DCMI module implements synchronization
controls, from the simplest one (hardware synchronization) to the most complex (e.g. embedded data
synchronization mode). DCMI internal failures leading to the incapability of correcting synchronizing
the data stream can be therefore detected
Error reporting No explicit error signal/message generation is provided (*)
Fault detection time Depends on implementation
Addressed fault model Permanent
Dependency on MCU configuration DCMI interface is available only on selected part numbers
Initialization Depends on implementation
Periodicity Continuous
Test for the diagnostic N/A
Multiple faults protection DCMI_SM_0: Periodical read-back of DCMI configuration registers
Recommendations and known
limitations
(*) For its nature, the detection of an actual hardware failure by this safety mechanism can be
confused with functional-related scenarios (e.g. camera device disconnected or powered-off). It is
responsibility of the application software to discriminate, as far as it is technically possible, among
different events
UM1845
Description of hardware and software diagnostics
UM1845 - Rev 4
page 75/108
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