ST STM32F2 Series - System Configuration Controller (SYSCFG); Table 93. SYSCFG_SM_0; Table 94. DIAG_SM_0

3.6.23 System configuration controller (SYSCFG)
Table 93. SYSCFG_SM_0
SM CODE SYSCFG_SM_0
Description Periodical read-back of configuration registers
Ownership End user
Detailed implementation
This method must be applied to System Configuration controller configuration registers.
This method is strongly recommended to protect registers related to hardware diagnostics
activation and error reporting chain related features.
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 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 faults protection Refer to NVIC_SM_0
Recommendations and known limitations
This method is mainly overlapped by several other “configuration register read-back” required for
other MCU peripherals. It is reported here for the sake of completeness
Table 94. DIAG_SM_0
SM CODE DIAG_SM_0
Description Periodical read-back of hardware diagnostics configuration registers
Ownership End user
Detailed implementation
In STM32F2 Series several hardware-based efficient safety mechanisms (e.g. ECC on Flash) are
available. This method shall be applied to any configuration register related to diagnostic measure
operations, including error reporting. End user shall therefore individuate configuration registers
related to:
• Hardware diagnostic enable
• 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 MCU 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 faults protection Refer to NVIC_SM_0
Recommendations and known limitations Refer to NVIC_SM_0
UM1845
Description of hardware and software diagnostics
UM1845 - Rev 4
page 64/108