Diff: Processes/Printing/Printing.cpp

Revision:

20:70d651156779

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Processes/Printing/Printing.cpp	Tue Apr 09 15:33:36 2013 +0000
@@ -0,0 +1,85 @@
+#include "Printing.h"
+#ifdef PRINTINGOFF
+void printingThread(void const*){Thread::wait(osWaitForever);}
+bool registerID(char, size_t){return true;}
+bool unregisterID(char) {return true;}
+bool updateval(char, float*, size_t){return true;}
+bool updateval(char id, float value){return true;}
+#else
+#include <iostream>
+using namespace std;
+
+size_t idlist[NUMIDS]; // Stores length of buffer 0 => unassigned
+float* buffarr[NUMIDS];
+volatile unsigned int newdataflags;
+
+bool registerID(char id, size_t length) {   
+    if (id < NUMIDS && !idlist[id]) {//check if the id is already taken
+        idlist[id] = length;
+        buffarr[id] = new float[length];
+        return true;
+    } else
+        return false;
+}
+bool unregisterID(char id) {
+    if (id < NUMIDS) {
+        idlist[id] = 0;
+        if (buffarr[id])
+            delete buffarr[id];
+        return true;
+    } else
+        return false;
+}
+
+bool updateval(char id, float* buffer, size_t length) {
+    //check if the id is registered, and has buffer of correct length
+    if (id < NUMIDS && idlist[id] == length && buffarr[id] && !(newdataflags & (1<<id))) {
+        for (size_t i = 0; i < length; i++)
+            buffarr[id][i] = buffer[i];
+        newdataflags |= (1<<id);
+        return true;
+    } else
+        return false;
+}
+
+bool updateval(char id, float value){
+    //check if the id is registered, and the old value has been written
+    if (id < NUMIDS && idlist[id] == 1 && buffarr[id] && !(newdataflags & (1<<id))) {
+        buffarr[id][0] = value;
+        newdataflags |= (1<<id);
+        return true;
+    } else
+        return false;
+}
+
+void printingThread(void const*){
+    newdataflags = 0;
+    for (int i = 0; i < NUMIDS; i++) {
+        idlist[i] = 0;
+        buffarr[i] = 0;
+    }
+
+
+    Thread::wait(3500);
+    while(true){   
+        // Send number of packets
+        char numtosend = 0;
+        for (unsigned int v = newdataflags; v; numtosend++){v &= v - 1;}        
+        cout.put(numtosend);
+
+        // Send packets
+        for (char id = 0; id < NUMIDS; id++) {
+            if (newdataflags & (1<<id)) {
+                cout.put(id);
+                cout.write((char*)buffarr[id], idlist[id] * sizeof(float));
+                newdataflags &= ~(1<<id);
+            }
+        }
+        cout << endl;
+        Thread::wait(200);
+    }
+}
+#endif
+
+
+