port_microsecond_timer.h File Reference

Functions
void	portInitMicrosecondTimer ()
void	portSetHardwareSchedulerTimer (efitick_t nowNt, efitick_t setTimeNt)
void	portMicrosecondTimerCallback ()

Function Documentation

portInitMicrosecondTimer()

void portInitMicrosecondTimer

(

)

This file defines the API for the microsecond timer that a port needs to implement

Do not call these functions directly, they should only be called by microsecond_timer.cpp

Definition at line 35 of file microsecond_timer_gpt.cpp.

                                {
    gptStart(&GPTDEVICE, &gpt5cfg);
    efiAssertVoid(ObdCode::CUSTOM_ERR_TIMER_STATE, GPTDEVICE.state == GPT_READY, "hw state");
}

Referenced by initMicrosecondTimer().

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portMicrosecondTimerCallback()

void portMicrosecondTimerCallback

(

)

Definition at line 98 of file microsecond_timer.cpp.

                                    {
    timerCallbackCounter++;
    isTimerPending = false;
 
    uint32_t before = getTimeNowLowerNt();
    globalTimerCallback();
    uint32_t precisionCallbackDuration = getTimeNowLowerNt() - before;
    if (precisionCallbackDuration > maxPrecisionCallbackDuration) {
        maxPrecisionCallbackDuration = precisionCallbackDuration;
    }
}

Referenced by hwTimerCallback(), and hwTimerCallback().

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portSetHardwareSchedulerTimer()

void portSetHardwareSchedulerTimer	(	efitick_t	nowNt,
		efitick_t	setTimeNt
	)

Definition at line 6 of file microsecond_timer_gpt.cpp.

                                                                         {
    int32_t deltaTimeUs = NT2US((int32_t)setTimeNt - (int32_t)nowNt);
 
    // If already set, reset the timer
    if (GPTDEVICE.state == GPT_ONESHOT) {
        gptStopTimerI(&GPTDEVICE);
    }
 
    if (GPTDEVICE.state != GPT_READY) {
        firmwareError(ObdCode::CUSTOM_HW_TIMER, "HW timer state %d", GPTDEVICE.state);
        return;
    }
 
    // Start the timer
    gptStartOneShotI(&GPTDEVICE, deltaTimeUs);
}

Referenced by setHardwareSchedulerTimer().

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