mirror of https://github.com/rusefi/rusefi-1.git
126 lines
3.7 KiB
C++
126 lines
3.7 KiB
C++
/**
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* @file trigger_input_icu.cpp
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* @brief Position sensor hardware layer - ICU version
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*
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* todo: code reuse with digital_input_icu.cpp was never finished
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* todo: at the moment due to half-done code reuse we already depend on EFI_ICU_INPUTS but still have custom code
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* todo: VVT implementation is a nasty copy-paste :(
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*
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* see digital_input_icu.cpp
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*
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* @date Dec 30, 2012
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* @author Andrey Belomutskiy, (c) 2012-2020
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*/
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#include "global.h"
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volatile int icuWidthCallbackCounter = 0;
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volatile int icuWidthPeriodCounter = 0;
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#if EFI_SHAFT_POSITION_INPUT && (HAL_USE_ICU == TRUE)
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#include "trigger_input.h"
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#include "digital_input_icu.h"
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EXTERN_ENGINE;
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extern bool hasFirmwareErrorFlag;
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static Logging *logger;
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static void vvtWidthCallback(void *) {
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hwHandleVvtCamSignal(TV_RISE, getTimeNowNt());
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}
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static void vvtPeriodCallback(void *) {
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hwHandleVvtCamSignal(TV_FALL, getTimeNowNt());
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}
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/**
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* that's hardware timer input capture IRQ entry point
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* 'width' events happens before the 'period' event
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*/
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static void shaftWidthCallback(bool isPrimary) {
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efitick_t stamp = getTimeNowNt();
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if (!engine->hwTriggerInputEnabled) {
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return;
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}
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icuWidthCallbackCounter++;
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// todo: support for 3rd trigger input channel
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// todo: start using real event time from HW event, not just software timer?
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if (hasFirmwareErrorFlag)
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return;
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if (!isPrimary && !TRIGGER_WAVEFORM(needSecondTriggerInput)) {
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return;
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}
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// icucnt_t last_width = icuGetWidth(icup); so far we are fine with system time
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// todo: add support for 3rd channel
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trigger_event_e signal = isPrimary ? (engineConfiguration->invertPrimaryTriggerSignal ? SHAFT_PRIMARY_FALLING : SHAFT_PRIMARY_RISING) : (engineConfiguration->invertSecondaryTriggerSignal ? SHAFT_SECONDARY_FALLING : SHAFT_SECONDARY_RISING);
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hwHandleShaftSignal(signal, stamp);
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}
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static void shaftPeriodCallback(bool isPrimary) {
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efitick_t stamp = getTimeNowNt();
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if (!engine->hwTriggerInputEnabled) {
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return;
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}
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icuWidthPeriodCounter++;
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if (hasFirmwareErrorFlag)
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return;
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if (!isPrimary && !TRIGGER_WAVEFORM(needSecondTriggerInput)) {
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return;
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}
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// todo: add support for 3rd channel
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// icucnt_t last_period = icuGetPeriod(icup); so far we are fine with system time
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trigger_event_e signal =
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isPrimary ? (engineConfiguration->invertPrimaryTriggerSignal ? SHAFT_PRIMARY_RISING : SHAFT_PRIMARY_FALLING) : (engineConfiguration->invertSecondaryTriggerSignal ? SHAFT_SECONDARY_RISING : SHAFT_SECONDARY_FALLING);
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hwHandleShaftSignal(signal, stamp);
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}
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/*==========================================================================*/
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/* Exported functions. */
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/*==========================================================================*/
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int icuTriggerTurnOnInputPin(const char *msg, int index, bool isTriggerShaft) {
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(void)msg;
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brain_pin_e brainPin = isTriggerShaft ? CONFIG(triggerInputPins)[index] : engineConfiguration->camInputs[index];
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if (brainPin == GPIO_UNASSIGNED) {
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return -1;
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}
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digital_input_s* input = startDigitalCapture("trigger", brainPin, true);
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if (input == NULL) {
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/* error already reported */
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return -1;
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}
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if (isTriggerShaft) {
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void * arg = (void*) (index == 0);
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input->setWidthCallback((VoidInt)(void*)shaftWidthCallback, arg);
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input->setPeriodCallback((VoidInt)(void*)shaftPeriodCallback, arg);
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} else {
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input->setWidthCallback((VoidInt)(void*)vvtWidthCallback, NULL);
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input->setPeriodCallback((VoidInt)(void*)vvtPeriodCallback, NULL);
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}
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return 0;
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}
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void icuTriggerTurnOffInputPin(brain_pin_e brainPin) {
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stopDigitalCapture("trigger", brainPin);
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}
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void icuTriggerSetPrimaryChannel(brain_pin_e brainPin) {
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(void)brainPin;
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}
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void icuTriggerTurnOnInputPins(Logging *sharedLogger) {
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logger = sharedLogger;
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}
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#endif /* (EFI_SHAFT_POSITION_INPUT && (HAL_USE_ICU == TRUE)) */
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