save

Makefile

@@ -5,7 +5,7 @@ PROG=oran
 OBJS=main.o dl.o ul.o shared_buffer.o utils.o nr.o packetize.o
 
 $(PROG) : $(OBJS)
-	$(CC) $(CFLAGS) -o $(PROG) $(OBJS)
+	$(CC) $(CFLAGS) -o $(PROG) $(OBJS) -lm
 
 %.o: %.c
 	$(CC) $(CFLAGS) -c $<

dl.c

@@ -10,6 +10,9 @@
 
 #include <errno.h>
 
+/* todo: remove, this is for testing */
+#include <math.h>
+
 #include "utils.h"
 #include "nr.h"
 #include "packetize.h"
@@ -112,6 +115,16 @@ void transmit_dl_u_plane(processor_t *p, int frame, int subframe, int slot, int
   rb_count = 100;
 
 next:
+  int v;
+  if (rb_start == 100) {
+    v = 4000;
+  } else {
+    v = 0;
+  }
+  short *z = (short *)iq;
+  int pos = 36*12 + cos(2*M_PI*(frame*10+subframe)/(1024))*100;
+  z[pos*2] = v;
+
   p->st.frame = frame;
   p->st.subframe = subframe;
   p->st.slot = slot;
@@ -130,11 +143,14 @@ next:
   addr.sll_ifindex = p->interface_index;
   errno = 0;
 
+#if 0
 {
   printf("  f/sf/slot/symbol %d.%d.%d.%d [%d] (start %3d count %3d next seq %d)", frame, subframe, slot, symbol, len, rb_start, rb_count, p->st.seq_id_up_dl);
   for (int i = 0; i < 50; i++) printf(" %2.2x", (unsigned char)b[i]);
   printf("\n");
 }
+#endif
+
   if (sendto(p->socket, b, len, 0, (struct sockaddr *)&addr, sizeof(addr)) != len) { perror("send"); }
 
   rb_start += 100;

packetize.c

@@ -11,7 +11,6 @@
   } while (0)
 
 #define PUT_BIT(b) do { \
-    printf("b %d ret %d bit %d out %p\n", (b), ret, bit, out); \
     if (ret == size) { printf("buffer too small\n"); return -1; } \
     out[ret] &= ~((1) << (7 - bit)); \
     out[ret] |= (b) << (7 - bit); \
@@ -71,13 +70,7 @@ static int make_cp_uldl(packet_config_t *cfg, packet_state_t *st, char *out, int
   data_start = ret;
 
   PUT_BITS(cfg->eaxc_id_dl, 16);
-  if (dl) {
-    PUT_BITS(st->seq_id_cp_dl, 8);
-//    st->seq_id_cp_dl++;
-  } else {
-    PUT_BITS(st->seq_id_cp_ul, 8);
-//    st->seq_id_cp_ul++;
-  }
+  PUT_BITS(dl ? st->seq_id_cp_dl : st->seq_id_cp_ul, 8);
 
   PUT_BITS(1, 1);     /* E bit, always 1 */
   PUT_BITS(0, 7);     /* subsequence ID, always 0 */
@@ -121,7 +114,7 @@ static int make_cp_uldl(packet_config_t *cfg, packet_state_t *st, char *out, int
   PUT_BITS(0, 1);               /* ef = 0 (no extension) */
   PUT_BITS(0, 15);              /* beam id */
 
-  /* put payload size at the right position */
+  /* put payload size */
   payload_size = ret - data_start;
   out_payload_size[0] = payload_size >> 8;
   out_payload_size[1] = payload_size & 255;
@@ -146,7 +139,6 @@ void make_cp_prach()
 int make_up_dl(packet_config_t *cfg, packet_state_t *st, char *out, int size,
                char *iq, int rb_start, int rb_count, int symbol_id)
 {
-printf("make_up_dl start %d count %d\n", rb_start, rb_count);
   int ret = 0;
   int bit = 0;
   int data_start;
@@ -173,7 +165,6 @@ printf("make_up_dl start %d count %d\n", rb_start, rb_count);
 
   PUT_BITS(cfg->eaxc_id_dl, 16);
   PUT_BITS(st->seq_id_up_dl, 8);
-//  st->seq_id_up_dl++;
 
   PUT_BITS(1, 1);     /* E bit, always 1 */
   PUT_BITS(0, 7);     /* subsequence ID, always 0 */
@@ -208,7 +199,7 @@ printf("make_up_dl start %d count %d\n", rb_start, rb_count);
 
   ret += iq_size;
 
-  /* put payload size at the right position */
+  /* put payload size */
   payload_size = ret - data_start;
   out_payload_size[0] = payload_size >> 8;
   out_payload_size[1] = payload_size & 255;