From acf1e8036632658881d9a8eeee0f173f26df3851 Mon Sep 17 00:00:00 2001
From: Pavel Brychta <pavel.brychta@post.cz>
Date: Wed, 4 Aug 2021 07:27:19 +0200
Subject: [PATCH] Pouziti semaforu u ESP32

---
 src/wsLED.cpp | 14 ++++++++++++++
 src/wsLED.h   |  1 +
 2 files changed, 15 insertions(+)

diff --git a/src/wsLED.cpp b/src/wsLED.cpp
index 3e766dc..8aae605 100644
--- a/src/wsLED.cpp
+++ b/src/wsLED.cpp
@@ -102,6 +102,8 @@ void wsLED::begin(void)
 
         ESP_ERROR_CHECK(rmt_config(&config));
         ESP_ERROR_CHECK(rmt_driver_install(config.channel, 0, 0));
+
+        _semaphore = xSemaphoreCreateBinary();
 #endif
         _color[0] = _color[1] = _color[2] = 0;
         show();
@@ -120,6 +122,9 @@ void ICACHE_RAM_ATTR wsLED::rtLed(void)
 {
     uint32_t timing;
 
+#if defined(ESP32)
+    xSemaphoreTakeFromISR(_semaphore, pdFALSE);
+#endif
     _handler.detach();
     switch (_ledState) {
     case LED_BLINK:
@@ -167,6 +172,9 @@ void ICACHE_RAM_ATTR wsLED::rtLed(void)
     }
     show();
     _handler.attach_ms(timing, ledTrampoline, this);
+#if defined(ESP32)
+    xSemaphoreGiveFromISR(_semaphore, pdFALSE);
+#endif
 }
 
 void wsLED::setColors(LEDRGB color1, LEDRGB color2)
@@ -218,6 +226,9 @@ void wsLED::pulse(LEDRGB color, uint32_t duration)
 {
 
     if (NOT_A_PIN != _pin) {
+#if defined(ESP32)
+        xSemaphoreTake(_semaphore, portMAX_DELAY);
+#endif
         _handler.detach();
         _scale = 0xff;
         _pulseColor = color;
@@ -227,6 +238,9 @@ void wsLED::pulse(LEDRGB color, uint32_t duration)
         _pulseDuration = duration;
         _ledState = LED_PULSE_START;
         _handler.attach_ms(5, ledTrampoline, this);
+#if defined(ESP32)
+        xSemaphoreGive(_semaphore);
+#endif
     }
 }
 
diff --git a/src/wsLED.h b/src/wsLED.h
index cb50783..258e32e 100644
--- a/src/wsLED.h
+++ b/src/wsLED.h
@@ -146,6 +146,7 @@ protected:
 #if defined(ARDUINO_ARCH_ESP32)
     int _rmtChannel;
     rmt_item32_t led_data_buffer[LED_BUFFER_ITEMS];
+    SemaphoreHandle_t _semaphore;
 #endif
 
     void show(void);