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comboctl-main: Refine waiting periods during long RT button press

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Signed-off-by: Carlos Rafael Giani <crg7475@mailbox.org>
This commit is contained in:
Carlos Rafael Giani 2022-11-24 22:52:18 +01:00
parent 1e6b560199
commit 1131ad1195
1 changed files with 11 additions and 4 deletions
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15
pump/combov2/comboctl/src/commonMain/kotlin/info/nightscout/comboctl/main/RTNavigation.kt
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@ -20,7 +20,14 @@ import kotlin.reflect.KClassifier
private val logger = Logger.get("RTNavigation")
private const val WAIT_PERIOD_DURING_LONG_RT_BUTTON_PRESS_IN_MS = 110L
// There are _two_ waiting periods during RT button presses. The minimum one is there
// in case a new RT arrives very quickly; it is then necessary to wait a bit before
// sending the next button press packet to the Combo to avoid overflow. The maximum
// one is there if there is no screen update until we send the next button press
// packet to the Combo. Without the maximum period, we'd then end up in a deadlock.
// In other words, the maximum waiting period functions as a timeout.
private const val MINIMUM_WAIT_PERIOD_DURING_LONG_RT_BUTTON_PRESS_IN_MS = 110L
private const val MAXIMUM_WAIT_PERIOD_DURING_LONG_RT_BUTTON_PRESS_IN_MS = 600L
private const val MAX_NUM_SAME_QUANTITY_OBSERVATIONS = 10
/**
@ -390,7 +397,7 @@ suspend fun longPressRTButtonUntil(
// both cases), keep pressing the button.
val parsedDisplayFrame = try {
withTimeout(
timeMillis = WAIT_PERIOD_DURING_LONG_RT_BUTTON_PRESS_IN_MS
timeMillis = MAXIMUM_WAIT_PERIOD_DURING_LONG_RT_BUTTON_PRESS_IN_MS
) {
rtNavigationContext.getParsedDisplayFrame(filterDuplicates = true)
}
@ -414,8 +421,8 @@ suspend fun longPressRTButtonUntil(
// to be a phenomenon that is separate to the packet overflow
// that is documented in TransportLayer.IO.sendInternal().)
val elapsedTime = getElapsedTimeInMs() - timestampBeforeDisplayFrameRetrieval
if (elapsedTime < WAIT_PERIOD_DURING_LONG_RT_BUTTON_PRESS_IN_MS) {
val waitingPeriodInMs = WAIT_PERIOD_DURING_LONG_RT_BUTTON_PRESS_IN_MS - elapsedTime
if (elapsedTime < MINIMUM_WAIT_PERIOD_DURING_LONG_RT_BUTTON_PRESS_IN_MS) {
val waitingPeriodInMs = MINIMUM_WAIT_PERIOD_DURING_LONG_RT_BUTTON_PRESS_IN_MS - elapsedTime
logger(LogLevel.VERBOSE) { "Waiting $waitingPeriodInMs milliseconds before continuing button long-press" }
delay(timeMillis = waitingPeriodInMs)
}