3.2.16 DIAG_OSC32KCTRL

The DIAG_OSC32KCTRL module is designed to verify the correct functionality of the Oscillators Controller (OSC32KCTRL) through a set of C function calls.

Note: This module contains routines which sets the main clock at 48 MHz. The user would need to call DIAG_OSCCTRL_Initialize to restore the clock.

The DIAG_OSC32KCTRL software test API is mapped to the following safety mechanisms:

Table 3-17.
Function	Diagnostic Mechanism	Use Case	Elapsed Time (μs)~
DIAG_OSC32KCTRL_ClkSwitch()	OSC32KCTRL_CLOCK_SWITCH	POST	5232
DIAG_OSC32KCTRL_ClkSwitchDueToCFD()	OSC32KCTRL_CLOCK_FAILURE_DETECTION	POST / OnDemand	4122
DIAG_OSC32KCTRL_FreqCalibration()	OSC32KCTRL_CLOCK_CALIBRATION	POST	7477.85
DIAG_OSC32KCTRL_Interrupts()	OSC32KCTRL_INTERRUPTS	POST	144
DIAG_OSC32KCTRL_OSC32KDisable()	OSC32K_DISABLE	POST	3.35
DIAG_OSC32KCTRL_OSC32KEnable()	OSC32K_ENABLE	POST	3.33
DIAG_OSC32KCTRL_SFRReset()	SFR_RESET	POST	18.84
DIAG_OSC32KCTRL_SFRWriteRead()	SFR_WRITE_READ	POST / OnDemand	23.62
DIAG_OSC32KCTRL_Startup()	OSC32KCTRL_STARTUP	POST	2311
DIAG_OSC32KCTRL_XOSC32KDisable()	XOSC32K_DISABLE	POST	4.12
DIAG_OSC32KCTRL_XOSC32KEnable()	XOSC32K_ENABLE	POST	4.31

Configuring the Diagnostic

DIAG_OSC32KCTRL does not require additional configuration.

Using the Diagnostic

#include "definitions.h"

DIAG_TEST_STATUS DIAG_OSC32KCTRL_SFRPost(void)
{
    DIAG_TEST_STATUS result;
    
    result = DIAG_OSC32KCTRL_SFRReset(NULL,0,false);
    if (result == DIAG_TEST_PASSED)
    {
        result = DIAG_OSC32KCTRL_SFRWriteRead(NULL,0,false);
    }
    return result;
}


OSC32KCTRL_RESET_STATES __attribute__((section(".persist"))) osc32kctrl_reset_state;
DIAG_TEST_STATUS __attribute__((section(".persist"))) osc32Kctrl_result[NO_OF_OSC32KCTRL_POST_TESTS]; 

DIAG_TEST_STATUS DIAG_OSC32KCTRL_Post( DIAG_OSC32K_PERIPHS src )
{
    DIAG_TEST_STATUS test_status = DIAG_TEST_FAILED;
    
    switch( src )
    {
        case DIAG_OSC32KCTRL:
            test_status = DIAG_OSC32KCTRL_Interrupts();
            break;
        case DIAG_OSC32K_SRC:
            test_status = DIAG_OSC32KCTRL_OSC32KEnable();
            if( test_status == DIAG_TEST_PASSED )
            {
                test_status = DIAG_OSC32KCTRL_OSC32KDisable();
                if( test_status == DIAG_TEST_PASSED )
                {
                    test_status = DIAG_OSC32KCTRL_Startup(DIAG_OSC32K);
                    if( test_status == DIAG_TEST_PASSED )
                    {
                        test_status = DIAG_OSC32KCTRL_FreqCalibration(DIAG_OSC32K);
                    }
                }
            }
            break;
        case DIAG_XOSC32K_SRC:
            test_status = DIAG_OSC32KCTRL_XOSC32KEnable();
            if(test_status == DIAG_TEST_PASSED )
            {
                test_status = DIAG_OSC32KCTRL_XOSC32KDisable();
                if( test_status == DIAG_TEST_PASSED )
                {
                    test_status = DIAG_OSC32KCTRL_Startup(DIAG_XOSC32K);
                    if( test_status == DIAG_TEST_PASSED )
                    {
                        test_status = DIAG_OSC32KCTRL_FreqCalibration(DIAG_XOSC32K);
                    }
                }
            }
            break;
        case DIAG_OSCULP32K_SRC:
            if( DIAG_OSC32KCTRL_FreqCalibration(DIAG_OSCULP32K) == DIAG_TEST_PASSED )
            {
                test_status = DIAG_TEST_PASSED;
            }
            break;
        default:
            break;
    }
    return test_status;
}