Added Core Affinity

Author: gonzabrusco

Diff for: Kconfig.projbuild

@@ -82,6 +82,27 @@ choice ARDUINO_UDP_RUNNING_CORE
 
 endchoice
 
+choice ARDUINO_SERIAL_EVENT_TASK_RUNNING_CORE
+    bool "Core on which Arduino's Serial Event task is running"
+    default ARDUINO_SERIAL_EVENT_RUN_NO_AFFINITY
+    help
+        Select on which core Arduino's Serial Event task run
+
+    config ARDUINO_SERIAL_EVENT_RUN_CORE0
+        bool "CORE 0"
+    config ARDUINO_SERIAL_EVENT_RUN_CORE1
+        bool "CORE 1"
+    config ARDUINO_SERIAL_EVENT_RUN_NO_AFFINITY
+        bool "BOTH"
+
+endchoice
+
+config ARDUINO_SERIAL_EVENT_TASK_RUNNING_CORE
+    int
+    default 0 if ARDUINO_SERIAL_EVENT_RUN_CORE0
+    default 1 if ARDUINO_SERIAL_EVENT_RUN_CORE1
+    default -1 if ARDUINO_SERIAL_EVENT_RUN_NO_AFFINITY
+
 config ARDUINO_SERIAL_EVENT_TASK_STACK_SIZE
     int "Serial Event task stack size"
     default 2048

Diff for: cores/esp32/HardwareSerial.cpp

@@ -17,6 +17,10 @@
 #define ARDUINO_SERIAL_EVENT_TASK_PRIORITY (configMAX_PRIORITIES-1)
 #endif
 
+#ifndef ARDUINO_SERIAL_EVENT_TASK_RUNNING_CORE
+#define ARDUINO_SERIAL_EVENT_TASK_RUNNING_CORE -1
+#endif
+
 #ifndef SOC_RX0
 #if CONFIG_IDF_TARGET_ESP32
 #define SOC_RX0 3
@@ -167,7 +171,7 @@ HardwareSerial::~HardwareSerial()
 void HardwareSerial::_createEventTask(void *args)
 {
     // Creating UART event Task
-    xTaskCreate(_uartEventTask, "uart_event_task", ARDUINO_SERIAL_EVENT_TASK_STACK_SIZE, this, ARDUINO_SERIAL_EVENT_TASK_PRIORITY, &_eventTask);
+    xTaskCreateUniversal(_uartEventTask, "uart_event_task", ARDUINO_SERIAL_EVENT_TASK_STACK_SIZE, this, ARDUINO_SERIAL_EVENT_TASK_PRIORITY, &_eventTask, ARDUINO_SERIAL_EVENT_TASK_RUNNING_CORE);
     if (_eventTask == NULL) {
         log_e(" -- UART%d Event Task not Created!", _uart_nr);
     }