Modifications to the example for demonstrating using integer queues to pass data between tasks.

Author: Michael Polia

examples/IntegerQueue/IntegerQueue.ino

@@ -3,8 +3,8 @@
  * https://www.freertos.org/Embedded-RTOS-Queues.html
  */
 
-// Include Arduino FreeRTOS library
-#include <Arduino_FreeRTOS.h>
+#include <Arduino.h>
+#include <Adafruit_TinyUSB.h> // for Serial
 
 // Include queue support
 #include <queue.h>
@@ -17,6 +17,18 @@ QueueHandle_t integerQueue;
 
 void setup() {
 
+    Serial.begin(115200);
+
+    // Wait for a serial port connection to be established before continuing.
+    // Don't want to miss any debug messages.
+    while ( !Serial ) delay(10);   // for nrf52840 with native usb
+
+    Serial.println("STARTING THE APPLICATION.");
+
+
+  // Configure pin 4 as an input and enable the internal pull-up resistor.
+  pinMode(4, INPUT_PULLUP);
+
   /**
    * Create a queue.
    * https://www.freertos.org/a00116.html
@@ -56,7 +68,33 @@ void setup() {
 
 }
 
-void loop() {}
+void loop() {
+
+    static bool firstTime = true;
+    static int previousDigitalReadValue = -1;
+
+    if ( firstTime ) {
+        Serial.println("Starting loop....");
+        delay(1000);
+
+        firstTime = false;
+    }
+
+    int digitalReadValue = digitalRead (4);
+
+    if (digitalReadValue != previousDigitalReadValue) {
+        if (digitalReadValue == HIGH) {
+            Serial.println("HIGH");
+        }
+        else {
+            Serial.println("LOW");
+        }
+
+        previousDigitalReadValue = digitalReadValue;
+    }
+
+    delay(1000);
+}
 
 
 /**
@@ -67,6 +105,9 @@ void loop() {}
 void TaskAnalogRead(void *pvParameters)
 {
   (void) pvParameters;
+
+    Serial.print("Starting task ");
+    Serial.println(pcTaskGetName(NULL)); // Get task name
 
   for (;;)
   {
@@ -91,13 +132,8 @@ void TaskAnalogRead(void *pvParameters)
 void TaskSerial(void * pvParameters) {
   (void) pvParameters;
 
-  // Init Arduino serial
-  Serial.begin(9600);
-
-  // Wait for serial port to connect. Needed for native USB, on LEONARDO, MICRO, YUN, and other 32u4 based boards.
-  while (!Serial) {
-    vTaskDelay(1);
-  }
+    Serial.print("Starting task ");
+    Serial.println(pcTaskGetName(NULL)); // Get task name
 
   int valueFromQueue = 0;
 
@@ -122,13 +158,16 @@ void TaskBlink(void *pvParameters)
 {
   (void) pvParameters;
 
+    Serial.print("Starting task ");
+    Serial.println(pcTaskGetName(NULL)); // Get task name
+
   pinMode(LED_BUILTIN, OUTPUT);
 
   for (;;)
   {
     digitalWrite(LED_BUILTIN, HIGH);
-    vTaskDelay( 250 / portTICK_PERIOD_MS );
+    vTaskDelay( 250 / (1 + portTICK_PERIOD_MS) );
     digitalWrite(LED_BUILTIN, LOW);
-    vTaskDelay( 250 / portTICK_PERIOD_MS );
+    vTaskDelay( 250 / (1 + portTICK_PERIOD_MS) );
   }
 }