Revision 0:ff3de4aaacf8, committed 2019-03-06

Comitter:

altb

Date:

Wed Mar 06 14:19:23 2019 +0000

Commit message:

New RTOS part

Changed in this revision

diff -r 000000000000 -r ff3de4aaacf8 Signal.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Signal.cpp	Wed Mar 06 14:19:23 2019 +0000
@@ -0,0 +1,54 @@
+/*
+ * Signal.cpp
+ * Copyright (c) 2017, ZHAW
+ * All rights reserved.
+ */
+
+#include "Signal.h"
+
+using namespace std;
+
+int32_t Signal::signals = 0;
+
+/**
+ * Creates a signal object and assignes a unique flag.
+ */
+Signal::Signal() {
+    
+    mutex.lock();
+    
+    int32_t n = 0;
+    while ((((1 << n) & signals) > 0) && (n < 30)) n++;
+    signal = (1 << n);
+    
+    mutex.unlock();
+}
+
+/**
+ * Deletes the signal object and releases the assigned flag.
+ */
+Signal::~Signal() {
+    
+    mutex.lock();
+    
+    signals &= ~signal;
+    
+    mutex.unlock();
+}
+
+/**
+ * Gets the assigned signal flag.
+ */
+int32_t Signal::read() {
+    
+    return signal;
+}
+
+/**
+ * The empty operator is a shorthand notation of the <code>read()</code> method.
+ */
+Signal::operator int32_t() {
+    
+    return read();
+}
+

diff -r 000000000000 -r ff3de4aaacf8 Signal.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Signal.h	Wed Mar 06 14:19:23 2019 +0000
@@ -0,0 +1,34 @@
+/*
+ * Signal.h
+ * Copyright (c) 2017, ZHAW
+ * All rights reserved.
+ */
+
+#ifndef SIGNAL_H_
+#define SIGNAL_H_
+
+#include <cstdlib>
+#include <stdint.h>
+#include <mbed.h>
+
+/**
+ * This class manages the handling of unique signal flags to trigger rtos threads.
+ */
+class Signal {
+    
+    public:
+        
+                        Signal();
+        virtual         ~Signal();
+        virtual int32_t read();
+                        operator int32_t();
+        
+    private:
+        
+        static int32_t  signals;    // variable that holds all assigned signal flags
+        int32_t         signal;     // signal flag of this object
+        Mutex           mutex;      // mutex to lock critical sections
+};
+
+#endif /* SIGNAL_H_ */
+