Added Rand Software, started Rand Hardware, Fixed error in Task

software/signal_processing/rand.c

@@ -3,9 +3,72 @@
 #include "system/data_channel.h"
 #include "system/float_word.h"
 
-int task_rand_run( void * task ) {
+#include "stdio.h"
 
-    // TODO
+#define POLYNOM ((1 << 31)|(1 << 21)|(1 << 1)|(1 << 0))
+
+int32_t shift_lsfr(int32_t *lsfr) {
+	int feedback;
+
+	feedback = *lsfr & 1;
+
+	*lsfr >>= 1;
+
+	if(feedback == 1)
+		*lsfr ^= POLYNOM;
+	return *lsfr;
+
+}
+
+int32_t pot(int32_t base, int exp) {
+	int32_t res = 1;
+	while(exp-- >= 0)
+		res *= base;
+
+	return res;
+}
+
+uint8_t clamp_value(uint8_t value) {
+		
+	if(value & 128) {
+		value &= 0b10000001;
+		//value &= ((1 << 7) | (1 << 0));
+	} else {
+		//value |= ~((1 << 1) | (1 << 0));
+		value |= 0b01111100;
+	}
+	return value;
+
+}
+
+int task_rand_run( void * task ) {
+	
+	rand_config* config = ( rand_config* ) task;
+	float_word seed = { .value = config->seed };
+
+	uint32_t lfsr = seed.word;
+
+	uint32_t data_channel_base = config->base.sink;
+	data_channel_clear(data_channel_base);
+
+	for(uint32_t i = 0; i < DATA_CHANNEL_DEPTH; ++i) {
+		float_word res, value;
+
+		//res.value = lfsr;
+		//
+
+
+		uint32_t E = (value.word >> 23) & 0xff;
+		E = clamp_value(E);
+		
+		res.word = value.word;
+		res.word &= ~(0xFF << 23);
+		res.word |= (E << 23);
+
+		value.word = shift_lsfr(&lfsr) ;
+
+		data_channel_write( data_channel_base, res.word);
+	}
 
     return 0;
 }

software/signal_processing/system/task_rand.c

@@ -21,7 +21,7 @@ rand_config RAND_CONFIG = {
         .cycle_count = 0 },
     .seed = 1.3,
     .abs_min = 0.125,
-    .abs_max = 9.0 };
+    .abs_max = 8.0 };
 
 int task_rand_configure( void * data ) {
     rand_config * task = ( rand_config * ) data;