mirror of https://github.com/rusefi/rusefi-1.git
99 lines
3.1 KiB
C++
99 lines
3.1 KiB
C++
/**
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* @file trigger_input.cpp
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* @brief Position sensor hardware layer
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*
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* @date Dec 30, 2012
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* @author Andrey Belomutskiy, (c) 2012-2014
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*/
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#include "main.h"
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#if EFI_SHAFT_POSITION_INPUT || defined(__DOXYGEN__)
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#include "trigger_input.h"
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#include "wave_analyzer_hw.h"
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#include "pin_repository.h"
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#include "trigger_structure.h"
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#include "trigger_central.h"
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#include "engine_configuration.h"
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#include "wave_analyzer_hw.h"
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static WaveReaderHw primaryCrankInput;
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static WaveReaderHw secondaryCrankInput;
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extern engine_configuration_s *engineConfiguration;
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extern engine_configuration2_s *engineConfiguration2;
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extern board_configuration_s *boardConfiguration;
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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 shaft_icu_width_callback(ICUDriver *icup) {
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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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int isPrimary = icup == primaryCrankInput.driver;
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if (!isPrimary && !engineConfiguration->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 ? SHAFT_PRIMARY_UP : SHAFT_SECONDARY_UP;
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hwHandleShaftSignal(signal);
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}
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static void shaft_icu_period_callback(ICUDriver *icup) {
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int isPrimary = icup == primaryCrankInput.driver;
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if (!isPrimary && !engineConfiguration->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 = isPrimary ? SHAFT_PRIMARY_DOWN : SHAFT_SECONDARY_DOWN;
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hwHandleShaftSignal(signal);
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}
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/**
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* the main purpose of this configuration structure is to specify the input interrupt callbacks
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*/
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static ICUConfig shaft_icucfg = { ICU_INPUT_ACTIVE_LOW, 100000, /* 100kHz ICU clock frequency. */
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shaft_icu_width_callback, shaft_icu_period_callback };
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void initShaftPositionInputCapture(void) {
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ICUDriver *driver;
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driver = getInputCaptureDriver(boardConfiguration->triggerInputPins[0]);
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// todo: extract method!
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// initialize primary Input Capture Unit pin
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initWaveAnalyzerDriver(&primaryCrankInput, boardConfiguration->triggerInputPins[0]);
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/**
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* Start primary Input Capture Unit using given configuration
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* @see shaft_icucfg for callback entry points
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*/
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shaft_icucfg.channel = ICU_CHANNEL_1;
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print("initShaftPositionInputCapture 1 %s\r\n", hwPortname(boardConfiguration->triggerInputPins[0]));
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// todo: reuse 'setWaveReaderMode' method here?
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if (driver != NULL) {
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icuStart(driver, &shaft_icucfg);
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icuEnable(driver);
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}
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driver = getInputCaptureDriver(boardConfiguration->triggerInputPins[1]);
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// initialize secondary Input Capture Unit pin
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initWaveAnalyzerDriver(&secondaryCrankInput, boardConfiguration->triggerInputPins[1]);
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shaft_icucfg.channel = ICU_CHANNEL_1;
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print("initShaftPositionInputCapture 2 %s\r\n", hwPortname(boardConfiguration->triggerInputPins[1]));
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if (driver != NULL) {
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icuStart(driver, &shaft_icucfg);
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icuEnable(driver);
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}
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print("crank input disabled\r\n");
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}
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#endif /* EFI_SHAFT_POSITION_INPUT */
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