Refactor ISR logic into FreeRTOS tasks via semaphore and queue
This commit is contained in:
+123
-106
@@ -9,148 +9,165 @@
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#include "InterruptHandler.h"
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#include "InterruptHandler.h"
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#define LOOP_COUNTS_FOR_PAUSE 2u
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#define RF_QUEUE_SIZE 32u
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SemaphoreHandle_t beepSemaphore;
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QueueHandle_t rfEventQueue;
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#define LOOP_COUNTS_FOR_PAUSE (2u)
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hw_timer_t *timer;
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/*****************************************************/
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IRAM_ATTR void timerIsr();
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IRAM_ATTR void pinLevelChangeIsr(void);
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/*****************************************************/
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hw_timer_t * timer;
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static IRAM_ATTR void timerIsr(void);
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static IRAM_ATTR void pinLevelChangeIsr(void);
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static void beepTask(void *pvParameters);
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static void rfDecodeTask(void *pvParameters);
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/**
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/**
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*
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*
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*/
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*/
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void InterruptHandler_Init(void)
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void InterruptHandler_Init(void)
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{
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{
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/* setup interrupt */
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beepSemaphore = xSemaphoreCreateBinary();
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rfEventQueue = xQueueCreate(RF_QUEUE_SIZE, sizeof(RfEvent_t));
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/* beepTask: replaces beep logic that was in timerIsr — high priority so it responds within one tick */
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xTaskCreatePinnedToCore(beepTask, "beepTask", 2048, NULL, 5, NULL, 1);
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/* rfDecodeTask: replaces receiver ISR calls that were in pinLevelChangeIsr */
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xTaskCreatePinnedToCore(rfDecodeTask, "rfTask", 3072, NULL, 4, NULL, 1);
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attachInterrupt(digitalPinToInterrupt(DIN_FUNK), pinLevelChangeIsr, CHANGE);
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attachInterrupt(digitalPinToInterrupt(DIN_FUNK), pinLevelChangeIsr, CHANGE);
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#if 1
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timer = timerBegin(0, 80, true); /* prescaler 80 → 1 MHz */
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timer = timerBegin(0, 80, true); /* 80 -> 1 Mhz */
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timerAttachInterrupt(timer, &timerIsr, true);
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timerAttachInterrupt(timer, &timerIsr, true);
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timerAlarmWrite(timer, ISR_TIME_US, true);
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timerAlarmWrite(timer, ISR_TIME_US, true);
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timerAlarmEnable(timer);
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timerAlarmEnable(timer);
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#endif
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}
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}
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/**
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/**
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* called every 10 ms
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* Called every ISR_TIME_US (10 ms).
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*
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* Kept minimal: advance tDecis and wake beepTask via semaphore.
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* used to update tDecis, and for beeping
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*/
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*/
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IRAM_ATTR void timerIsr()
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static IRAM_ATTR void timerIsr(void)
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{
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{
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static uint32_t tshortPiepStartedMs = 0;
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static uint8_t count = 0;
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static uint8_t count = 0;
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if (++count == MS_TO_ISR_COUNT(100uL))
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static boolean toneOn = false;
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uint32_t tMillis = millis();
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#if 0
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static bool on = true;
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if (on) digitalWrite(DOUT_TEST_TIMER, HIGH);
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else digitalWrite(DOUT_TEST_TIMER, LOW);
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on = !on;
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#endif
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if (++count == MS_TO_ISR_COUNT(100uL) )
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{
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/* increment tDecis every 100ms */
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count = 0;
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tDecis++;
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}
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if (bRequestShortBeep)
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{
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bRequestShortBeep = false;
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tshortPiepStartedMs = tMillis;
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}
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if (tshortPiepStartedMs > 0u)
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{
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if (tMillis < (tshortPiepStartedMs + 30uL))
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{
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if (false == toneOn)
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{
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TONE_REQUEST_ON(TONE_REQUEST_SOURCE_SHORTPIEP);
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toneOn = true;
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}
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}
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else
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{
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TONE_REQUEST_OFF(TONE_REQUEST_SOURCE_SHORTPIEP);
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tshortPiepStartedMs = 0;
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toneOn = false;
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}
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}
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else
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{
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piepPattern->TaskCyclic();
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}
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if (toneRequest != 0u)
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{
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{
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digitalWrite(DOUT_PIEP_VCC, HIGH);
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count = 0;
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}
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tDecis++;
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else
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{
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digitalWrite(DOUT_PIEP_VCC, LOW);
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}
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}
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BaseType_t woken = pdFALSE;
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xSemaphoreGiveFromISR(beepSemaphore, &woken);
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portYIELD_FROM_ISR(woken);
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}
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}
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IRAM_ATTR void InterruptHandler_Stop(void)
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/**
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* Called on every 433 MHz pin edge.
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* Kept minimal: measure pulse width and push to rfEventQueue for rfDecodeTask.
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*/
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static IRAM_ATTR void pinLevelChangeIsr(void)
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{
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{
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timerAlarmDisable(timer);
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static bool lastVal = LOW;
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static uint32_t lastMics = 0;
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const uint32_t now = micros();
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const uint32_t dtMicros = now - lastMics;
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const bool pinVal = digitalRead(DIN_FUNK);
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if (lastVal == pinVal)
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return;
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lastMics = now;
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lastVal = pinVal;
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if (loopCountSincePause < LOOP_COUNTS_FOR_PAUSE || dtMicros < 100u)
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return;
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RfEvent_t ev = {dtMicros, pinVal};
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BaseType_t woken = pdFALSE;
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xQueueSendFromISR(rfEventQueue, &ev, &woken);
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portYIELD_FROM_ISR(woken);
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}
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IRAM_ATTR void InterruptHandler_Stop(void)
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{
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timerAlarmDisable(timer);
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detachInterrupt(digitalPinToInterrupt(DIN_FUNK));
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detachInterrupt(digitalPinToInterrupt(DIN_FUNK));
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}
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}
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IRAM_ATTR void InterruptHandler_PauseReceive()
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IRAM_ATTR void InterruptHandler_PauseReceive()
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{
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{
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loopCountSincePause = 0u;
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loopCountSincePause = 0u;
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}
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}
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/**
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/**
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* Woken every 10 ms by timerIsr via beepSemaphore.
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* Handles short-beep timing and the PiepPattern state machine,
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* then drives the buzzer supply pin — work that was previously in timerIsr.
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*
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*
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* Both tasks (beepTask and loop) run on Core 1, so they interleave only at
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* scheduling points and there is no true parallel access to piepPattern or
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* bRequestShortBeep.
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*/
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*/
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IRAM_ATTR void pinLevelChangeIsr(void)
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static void beepTask(void *pvParameters)
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{
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{
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static bool lastVal = LOW;
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static uint32_t tshortPiepStartedMs = 0;
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static uint32_t lastMics = 0;
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static bool toneOn = false;
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static uint32_t MINIMAL_DT_MICROS_FOR_RECEIVERS = 100u;
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uint32_t dtMicros = micros() - lastMics;
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for (;;)
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bool pinFunkVal = digitalRead(DIN_FUNK);
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{
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xSemaphoreTake(beepSemaphore, portMAX_DELAY);
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if (lastVal == pinFunkVal)
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const uint32_t tMillis = millis();
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{
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return;
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}
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else
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{
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lastMics = micros();
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lastVal = pinFunkVal;
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if (bRequestShortBeep)
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if (loopCountSincePause < LOOP_COUNTS_FOR_PAUSE)
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{
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{
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bRequestShortBeep = false;
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/* after receiving a key, wait for the main loop to run x times before activating receiving again */
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tshortPiepStartedMs = tMillis;
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return;
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}
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}
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else if (dtMicros > MINIMAL_DT_MICROS_FOR_RECEIVERS)
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{
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receiverSw.Isr(dtMicros, pinFunkVal);
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receiverAiggend.Isr(dtMicros, pinFunkVal);
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receiverOval.Isr(dtMicros, pinFunkVal);
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receiverKerui.Isr(dtMicros, pinFunkVal);
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receiverThermo.Isr(dtMicros, pinFunkVal);
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//digitalWrite(LED_BUILTIN, pinFunkVal);
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if (tshortPiepStartedMs > 0u)
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}
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{
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}
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if (tMillis < tshortPiepStartedMs + 30u)
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{
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if (!toneOn)
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{
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TONE_REQUEST_ON(TONE_REQUEST_SOURCE_SHORTPIEP);
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toneOn = true;
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}
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}
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else
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{
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TONE_REQUEST_OFF(TONE_REQUEST_SOURCE_SHORTPIEP);
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tshortPiepStartedMs = 0;
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toneOn = false;
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}
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}
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else
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{
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piepPattern->TaskCyclic();
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}
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digitalWrite(DOUT_PIEP_VCC, toneRequest != 0u ? HIGH : LOW);
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}
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}
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/**
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* Drains rfEventQueue and runs all receiver state machines.
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* Runs on Core 1 at priority 4 (above loop priority 1), so it pre-empts
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* the loop task when RF edges arrive but never runs in true parallel with it.
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*/
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static void rfDecodeTask(void *pvParameters)
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{
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RfEvent_t ev;
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for (;;)
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{
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if (xQueueReceive(rfEventQueue, &ev, portMAX_DELAY) == pdTRUE)
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{
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receiverSw.Isr(ev.dtMicros, ev.pinValue);
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receiverAiggend.Isr(ev.dtMicros, ev.pinValue);
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receiverOval.Isr(ev.dtMicros, ev.pinValue);
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receiverKerui.Isr(ev.dtMicros, ev.pinValue);
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receiverThermo.Isr(ev.dtMicros, ev.pinValue);
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}
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}
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}
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}
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