Transceiver: Move out TRXD socket send code to prepare for TRXDv1
Only old v0 is supported so far. TRXD protocol related data/logic is
moved to its own file out of Transceiver class. Code is refactored so it
can be re-used later by TRXDv1.
Related: OS#4006
Change-Id: I5786dd44b076202c6f1a6e82405670e8605797ed
diff --git a/Transceiver52M/proto_trxd.h b/Transceiver52M/proto_trxd.h
index 9da18db..2e5ad52 100644
--- a/Transceiver52M/proto_trxd.h
+++ b/Transceiver52M/proto_trxd.h
@@ -1,28 +1,52 @@
#pragma once
#include <stdint.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <math.h>
+
#include <osmocom/core/endian.h>
+#include "debug.h"
+
+#define MAX_RX_BURST_BUF_SIZE 444 /* 444 = EDGE_BURST_NBITS */
+
+struct trx_ul_burst_ind {
+ float rx_burst[MAX_RX_BURST_BUF_SIZE]; /* soft bits normalized 0..1 */
+ unsigned nbits; // number of symbols per slot in rxBurst, not counting guard periods
+ uint32_t fn; // TDMA frame number
+ uint8_t tn; // TDMA time-slot number
+ double rssi; // in dBFS
+ double toa; // in symbols
+ double noise; // noise level in dBFS
+ bool idle; // true if no valid burst is included
+};
+
+bool trxd_send_burst_ind_v0(size_t chan, int fd, const struct trx_ul_burst_ind *bi);
+
+/* The latest supported TRXD header format version */
+#define TRX_DATA_FORMAT_VER 0
+
struct trxd_hdr_common {
#if OSMO_IS_LITTLE_ENDIAN
- uint8_t tn:3,
- reserved:1,
- version:4;
+ uint8_t tn:3,
+ reserved:1,
+ version:4;
#elif OSMO_IS_BIG_ENDIAN
- uint8_t version:4,
- reserved:1,
- tn:3;
+ uint8_t version:4,
+ reserved:1,
+ tn:3;
#endif
- uint32_t fn; /* big endian */
+ uint32_t fn; /* big endian */
} __attribute__ ((packed));
struct trxd_hdr_v0_specific {
- uint8_t rssi;
- uint16_t toa; /* big endian */
+ uint8_t rssi;
+ uint16_t toa; /* big endian */
} __attribute__ ((packed));
struct trxd_hdr_v0 {
- struct trxd_hdr_common common;
- struct trxd_hdr_v0_specific v0;
- uint8_t soft_bits[0];
+ struct trxd_hdr_common common;
+ struct trxd_hdr_v0_specific v0;
+ uint8_t soft_bits[0];
} __attribute__ ((packed));