Loesung von add sin cos und rand

software/signal_processing/add.c

@@ -2,10 +2,23 @@
 #include "system/data_channel.h"
 #include "system/float_word.h"
 
-int task_add_run( void * task ) {
+int task_add_run( void * task )
+{
+	add_config * config = (add_config * ) task;
 
-    // TODO
+	// Nachfolgende Antworten Lesen den FIFO der ersten und zweiten Datenquelle aus
+	// den jeweils gelesenen Wert mit 4 und speichern das Ergebnis in der Datensenke
+	for (uint32_t i = 0; i < DATA_CHANNEL_DEPTH; ++i)
+	{
+		float a, 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;
 
-    return 0;
 }
-

software/signal_processing/rand.c

@@ -2,11 +2,43 @@
 #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 ) {
 
-    // TODO
+    // Nachfolgende Anweisungen Schreiben 1024 Mal den seed Wert in den FIFO für Rand
+	rand_config * config = ( rand_config * ) task;
+	float_word seed = {.value = config->seed};
 
-    return 0;
+	uint32_t lfsr = seed.word;
+    uint32_t bit = 0;                    // Must be 32-bit to allow bit << 31 later in the code
+
+	for( uint32_t i = 0; i < DATA_CHANNEL_DEPTH; i++ ) {
+		float_word res;
+
+		uint32_t sign = (lfsr >> 31) & 1;
+		uint32_t exponent;
+		uint32_t mantisse = lfsr & 0x7FFFFF;
+
+		if((lfsr >> 30) & 1) // MSB exponent
+		{
+			exponent = 128 + ((lfsr >> 23) & 1); // 128 to 129
+		}
+		else
+		{
+			exponent = 124 + ((lfsr >> 23) & 3); // 124 to 127
+		}
+
+		uint32_t ieee754 = (sign << 31) | (exponent << 23) | mantisse;
+		res.value = ieee754;
+
+		data_channel_write( config->base.sink, ieee754);
+
+		// fibonacci feedback polynomial: x^31 + x^21 + x^1 + 1
+		bit = ((lfsr >> 31) ^ (lfsr >> 21) ^ (lfsr >> 1)) & 1;
+        lfsr = (lfsr << 1) | bit;
+	}
+
+	return 0;
 }
-

software/signal_processing/sine.c

@@ -1,10 +1,21 @@
 #include "system/task_sine.h"
 #include "system/data_channel.h"
 #include "system/float_word.h"
+#include <math.h>
 
 int task_sine_run( void * data ) {
 
-    // TODO
+    // Nachfolgende Anweisungen Schreiben 1024 Mal den Wert 4 in den FIFO für Sinus
+	sine_config * task = ( sine_config * ) data;
+	uint32_t data_channel_base = task->base.sink;
+	data_channel_clear( data_channel_base );
 
-    return 0;
+	for( uint32_t i = 0; i < DATA_CHANNEL_DEPTH; i++ ) {
+		float_word res;
+		res.value = task->amplitude * sin((2 * M_PI / task->samples_per_periode) * i + task->phase );
+
+		data_channel_write( data_channel_base, res.word );
+	}
+
+	return 0;
 }