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virtual zero timer (#2426) 

* virtual zero timer

* it would help to call the correct function

Co-authored-by: Matthew Kennedy <makenne@microsoft.com>
This commit is contained in:
Matthew Kennedy 2021-03-07 12:32:41 -08:00 committed by GitHub
parent c716e045ae
commit 5a4c24f9a5
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 10 additions and 8 deletions
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6
firmware/controllers/trigger/trigger_central.cpp
View File

@ -175,8 +175,8 @@ void hwHandleVvtCamSignal(trigger_value_e front, efitick_t nowNt, int index DECL
tc->vvtCamCounter++;
efitick_t offsetNt = nowNt - tc->timeAtVirtualZeroNt;
angle_t currentPosition = NT2US(offsetNt) / oneDegreeUs;
float offsetUs = tc->virtualZeroTimer.getElapsedUs(nowNt);
angle_t currentPosition = offsetUs / oneDegreeUs;
// convert engine cycle angle into trigger cycle angle
currentPosition -= tdcPosition();
// https://github.com/rusefi/rusefi/issues/1713 currentPosition could be negative that's expected
@ -503,7 +503,7 @@ void TriggerCentral::handleShaftSignal(trigger_event_e signal, efitick_t timesta
triggerIndexForListeners = triggerState.getCurrentIndex() + (crankInternalIndex * getTriggerSize());
}
if (triggerIndexForListeners == 0) {
timeAtVirtualZeroNt = timestamp;
virtualZeroTimer.reset(timestamp);
}
reportEventToWaveChart(signal, triggerIndexForListeners PASS_ENGINE_PARAMETER_SUFFIX);

5
firmware/controllers/trigger/trigger_central.h
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@ -67,10 +67,7 @@ public:
// synchronization event position
angle_t vvtPosition[BANKS_COUNT][CAMS_PER_BANK];
/**
* this is similar to TriggerState#startOfCycleNt but with the crank-only sensor magic
*/
efitick_t timeAtVirtualZeroNt = 0;
Timer virtualZeroTimer;
efitick_t vvtSyncTimeNt[BANKS_COUNT][CAMS_PER_BANK];

6
firmware/util/timer.cpp
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@ -35,6 +35,10 @@ float Timer::getElapsedSeconds() const {
}
float Timer::getElapsedSeconds(efitick_t nowNt) const {
return 1e-6 * getElapsedUs(nowNt);
}
float Timer::getElapsedUs(efitick_t nowNt) const {
auto delta = nowNt - m_lastReset;
// Yes, things can happen slightly in the future if we get a lucky interrupt between
@ -50,7 +54,7 @@ float Timer::getElapsedSeconds(efitick_t nowNt) const {
auto delta32 = (uint32_t)delta;
return 1e-6 * NT2US(delta32);
return NT2US(delta32);
}
float Timer::getElapsedSecondsAndReset(efitick_t nowNt) {

1
firmware/util/timer.h
View File

@ -18,6 +18,7 @@ public:
// then a time period representing 2^32 counts will be returned.
float getElapsedSeconds() const;
float getElapsedSeconds(efitick_t nowNt) const;
float getElapsedUs(efitick_t nowNt) const;
// Perform an atomic update event based on the passed timestamp,
// returning the delta between the last reset and the provided timestamp