Diff: counting_task.cpp

Revision:

4:48761259552a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/counting_task.cpp	Tue Mar 14 14:46:43 2017 +0000
@@ -0,0 +1,51 @@
+/**
+ * This task do a binary count on the 4 mbed LEDs
+ *
+ * Author: Jacob Baungard Hansen
+ */
+
+#include "counting_task.h"
+
+/**
+ *
+ * @param starting_offset       when the task should but run first
+ * @param frequency_ms          the frequency in ms of how often the task should run
+ */
+CountingTask::CountingTask(int starting_offset, int frequency_ms)
+                                    : Task(starting_offset, frequency_ms) {
+                                        
+  this->count = 0;
+
+    this->led1 = new DigitalOut(LED1);
+    this->led2 = new DigitalOut(LED2);
+    this->led3 = new DigitalOut(LED3);
+    this->led4 = new DigitalOut(LED4);
+    
+
+}
+
+CountingTask::~CountingTask() {
+    delete this->led1;
+    delete this->led2;
+    delete this->led3;
+    delete this->led4;
+}
+
+/** 
+ * The function that is run at the specified frequency.
+ */
+void CountingTask::action() {
+
+  // simple way to get the bits
+    std::bitset<4> bits(this->count);
+    
+    // set the result
+    this->led1->write(bits[3]);
+    this->led2->write(bits[2]);
+    this->led3->write(bits[1]);
+    this->led4->write(bits[0]);
+    
+    // don't overflow
+    this->count = (this->count+1) % 16;
+
+}
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