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9 Interrupt Frequency Test
This module contains functional safety diagnostics API for Interrupt Frequency Test.
9.3 Functions
9.3.2 DIAG_INTERRUPT_Register
This API registers an interrupt for diagnosis. When any interrupt is registered, diag_interrupt_params_t parameters are initialized with user defined values and are later updated or monitored by GUID-6710B17A-D9B8-4E77-B578-00E9FFDB4F96.html function.

Introduction
This document contains API documentation for the diagnostic tests included MPLAB® Code Configurator AVR® IEC60730 Class B Diagnostic Library.
1 Software Requirements
2 Clock Frequency Test
This module contains functional safety diagnostics APIs for Clock Frequency test.
3 CPU Program Counter
This module contains functional safety diagnostics APIs for CPU Program counter test.
4 CPU Registers
This module contains functional safety diagnostics APIs for CPU Registers.
5 EEPROM - 16-bit CRC
This module contains APIs to calculate, store and validate 16-bit CCITT CRC for a given EEPROM region.
6 EEPROM - 32-bit CRC
This module contains APIs to calculate, store and validate 32-bit CCITT CRC for a given EEPROM region.
7 FLASH - 16-bit CRC
This module contains APIs to calculate, store and validate 16-bit CCITT CRC for a given FLASH region.
8 FLASH - 32-bit CRC
This module contains APIs to calculate, store and validate 32-bit CCITT CRC for a given FLASH region.
9 Interrupt Frequency Test
This module contains functional safety diagnostics API for Interrupt Frequency Test.
- 9.1 Structs
- 9.2 Enums
- 9.3 Functions
  - 9.3.1 DIAG_INTERRUPT_Frequency
    This API is called at in RTC interrupt service routine. In this API monitors the frequency of registered interrupts by comparing the respective counter with reference considering the given tolerance. Interrupts are monitored only if those are registred and enabled for monitoring.
  - 9.3.2 DIAG_INTERRUPT_Register
    This API registers an interrupt for diagnosis. When any interrupt is registered, diag_interrupt_params_t parameters are initialized with user defined values and are later updated or monitored by GUID-6710B17A-D9B8-4E77-B578-00E9FFDB4F96.html function.
  - 9.3.3 DIAG_INTERRUPT_Unregister
    This API unregisters an interrupt from frequency diagnosis.
  - 9.3.4 DIAG_INTERRUPT_Initialize
    This API configures the callback function for reference RTC periodic interrupt.
  - 9.3.5 DIAG_INTERRUPT_UpdateInterruptCounter
    This API increments the intr_counter for the registered interrupt.
  - 9.3.6 DIAG_INTERRUPT_GetStatus
    This API returns the result frequency diagnosis for required interrupt.
10 SRAM - Checkerboard Algorithm
This module contains functional safety diagnostics APIs for SRAM Checkerboard Test.
11 SRAM - March C-Minus Algorithm
This module contains functional safety diagnostics APIs for SRAM March-C Minus.
12 Simple Watchdog Timer
This module contains functional safety diagnostics APIs for WatchDog Timer Test.
13 Windowed Watchdog Timer
This module contains functional safety diagnostics APIs for WatchDog Timer Test.
14 File List
Here is a list of all documented files with brief descriptions
15 Class List
Here is a list of all documented files with brief descriptions

9.3.2 DIAG_INTERRUPT_Register

This API registers an interrupt for diagnosis. When any interrupt is registered, diag_interrupt_params_t parameters are initialized with user defined values and are later updated or monitored by DIAG_INTERRUPT_Frequency function.

bool DIAG_INTERRUPT_Register(
    diag_interrupt_id_t intrId,    uint16_t refCount,    uint16_t tolerance,    uint16_t fdtiCount
)

Parameters


[in] intrId	diag_interrupt_id_t - Unique ID for the interrupt to be monitored
[in] refCount	uint16_t - The number of interrupts expected to occur within a given monitoring period
[in] tolerance	uint16_t - The tolerance band for the number of interrupts which occur in the defined FDTI
[in] fdtiCount	uint16_t - This is the count to derive Fault Detection Time Interval for the interrupt registered for monitoring. FDTI is the time interval between the occurrence of a fault and its detection. This count gets decremented every time reference ISR is called. When this counter reaches 1, its time to check the intr_counter with expected intr_ref_counter for interrupt under test with given intr_counter_tolerance.

Returns


bool	bool