mirror of https://github.com/rusefi/rusefi.git
66 lines
1.4 KiB
C++
66 lines
1.4 KiB
C++
/**
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* @file frequency_sensor.cpp
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*/
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#include "pch.h"
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#include "frequency_sensor.h"
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#include "digital_input_exti.h"
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// Callback adapter since we can't pass a member function to a callback
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static void freqSensorExtiCallback(void* arg, efitick_t nowNt) {
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reinterpret_cast<FrequencySensor*>(arg)->onEdge(nowNt);
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}
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void FrequencySensor::initIfValid(brain_pin_e pin, SensorConverter &converter, float filterParameter) {
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if (!isBrainPinValid(pin)) {
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return;
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}
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// Filter parameter greater than or equal to 0.5 impossible as it causes filter instability, clamp
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// far under that value.
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if (filterParameter > 0.35f) {
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filterParameter = 0.35f;
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}
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m_filter.configureLowpass(1, filterParameter);
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setFunction(converter);
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m_pin = pin;
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#if EFI_PROD_CODE
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// todo: refactor https://github.com/rusefi/rusefi/issues/2123
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efiExtiEnablePin(getSensorName(), pin,
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PAL_EVENT_MODE_FALLING_EDGE,
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freqSensorExtiCallback, reinterpret_cast<void*>(this));
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#endif // EFI_PROD_CODE
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Register();
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}
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void FrequencySensor::deInit() {
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if (!isBrainPinValid(m_pin)) {
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return;
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}
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#if EFI_PROD_CODE
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efiExtiDisablePin(m_pin);
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#endif
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m_pin = Gpio::Unassigned;
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}
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void FrequencySensor::onEdge(efitick_t nowNt) {
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// diagnostics
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eventCounter++;
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float frequency = 1 / m_edgeTimer.getElapsedSecondsAndReset(nowNt);
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if (useBiQuad) {
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frequency = m_filter.filter(frequency);
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}
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postRawValue(frequency, nowNt);
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}
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