Fertig

software/signal_processing/add.c

@@ -4,7 +4,17 @@
 
 int task_add_run( void * task ) {
 
-    // TODO
+    add_config * config = ( add_config * ) task;
+   
+    for ( uint32_t i = 0; i < DATA_CHANNEL_DEPTH; i++ ) {
+	    float a;
+	    float b;
+	    data_channel_read( config-> sources[ 0 ], (uint32_t * ) & a);
+	    data_channel_read( config-> sources[ 1 ], (uint32_t * ) & b);
+	    float_word c;
+	    c.value = a+b;
+	    data_channel_write( config->sink, c.word );
+    }
 
     return 0;
 }

software/signal_processing/rand.c

@@ -1,12 +1,45 @@
-#include "system/task_rand.h"
-#include "system/hardware_task.h"
-#include "system/data_channel.h"
-#include "system/float_word.h"
-
-int task_rand_run( void * task ) {
-
-    // TODO
-
-    return 0;
-}
-
+#include "system/task_rand.h"
+#include "system/hardware_task.h"
+#include "system/data_channel.h"
+#include "system/float_word.h"
+#include <stdio.h>
+#include <system.h>
+
+int task_rand_run(void *task) {
+    rand_config *config = (rand_config *)task;
+    uint32_t data_channel_base = DATA_CHANNEL_2_BASE;
+
+
+    uint32_t lfsr = config->seed;
+
+    for (uint32_t i = 0; i < DATA_CHANNEL_DEPTH; ++i) {
+
+        uint32_t bit = ((lfsr >> 31) ^ (lfsr >> 21) ^ (lfsr >> 1) ^ (lfsr >> 0)) & 1;
+        lfsr = (lfsr << 1) | bit;
+
+
+        float_word res;
+        res.word = lfsr;
+
+        
+	uint32_t exponent = (lfsr >> 23) & 0xFF;
+
+	
+	if (exponent & 0x80) {  
+          exponent = 0x80 | (lfsr & 0x01);  
+	}else {  
+
+         exponent = 0x7C | (lfsr & 0x03);  
+	}	
+
+
+	res.word &= ~(0xFF << 23);  
+	res.word |= (exponent << 23); 
+
+
+
+        data_channel_write(data_channel_base, res.word);
+    }
+
+    return 0;
+}

software/signal_processing/sine.c

@@ -1,10 +1,30 @@
 #include "system/task_sine.h"
+#include "system/hardware_task.h"
+#include "system/sine_config.h"
 #include "system/data_channel.h"
 #include "system/float_word.h"
 
+#include <math.h>
+#include <stdio.h>
+#include <limits.h>
+#include <system.h>
+
 int task_sine_run( void * data ) {
 
-    // TODO
+    sine_config * task = ( sine_config * ) data;
+    uint32_t data_channel_base = task-> base.sink;
+    data_channel_clear( data_channel_base );
+
+    for ( uint32_t i = 0; i < DATA_CHANNEL_DEPTH; i++ ) {
+
+	    float_word res;
+
+        for(uint32_t y = 0; y < task->samples_per_periode; y++)
+        {
+	    	res.value = task->amplitude * sin(2*3.14/task->samples_per_periode*y + task->phase);
+	    	data_channel_write( data_channel_base, res.word );
+        }
+    }
 
     return 0;
 }