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2 Clock Frequency Test
This module contains functional safety diagnostics APIs for Clock Frequency test.
2.2 Functions
2.2.1 DIAG_CLOCK_Frequency
This API checks the stability and reliability oscillation at the expected clock frequency.

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.
- 2.1 Defines
- 2.2 Functions
  - 2.2.1 DIAG_CLOCK_Frequency
    This API checks the stability and reliability oscillation at the expected clock frequency.
  - 2.2.2 DIAG_CLOCK_Frequency_Initialize
    This API configures the callback handlers for required ISRs and enables the interrupts. This API should be called before using GUID-B4CCDFF2-E0A9-452E-AC75-DFA237AA7D9E.html.
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.
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

2.2.1 DIAG_CLOCK_Frequency

This API checks the stability and reliability oscillation at the expected clock frequency.

This is the Periodic test for the CPU Clock frequency. The test consists in monitoring the frequency of a Timer/Counter (TC) using the Real Time Counter (RTC) module using PIT as a time reference. Note that the TC has the same clock domain as the CPU.

diag_clock_frequency_status_t DIAG_CLOCK_Frequency(
    void
)

Returns


diag_clock_frequency_status_t	DIAG_CLOCK_FREQUENCY_PASS= 0, DIAG_CLOCK_FREQUENCY_FAIL= 1