FreeCalypso > hg > ice1-trau-tester

annotate abis/tx_func.c @ 33:351bd801cdce

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abis: should be complete now
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 13 Aug 2024 22:53:42 +0000
parents 5dd30224b70a
children
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1 /*
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2 * Here we are going to implement Tx on Abis toward the BTS.
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3 */
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4
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5 #include <stdint.h>
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6 #include <stdbool.h>
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9 #include <string.h>
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10 #include <unistd.h>
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12 #include <osmocom/core/msgb.h>
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13 #include <osmocom/core/select.h>
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14 #include <osmocom/isdn/i460_mux.h>
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15 #include <osmocom/trau/trau_frame.h>
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17 #include "globals.h"
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18 #include "submux.h"
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19 #include "dl_frames.h"
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20
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21 static void tx_service_subslot(int nr)
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22 {
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23 struct abis_subslot *ab = &subslots[nr];
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24 const uint8_t *srcbuf;
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25 struct msgb *msg;
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26 uint8_t *outbuf;
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28 if (!ab->got_sync)
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29 return;
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30 switch (ab->frame_type) {
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31 case TRAU_FT_FR_UP:
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32 srcbuf = dl_frame_fr;
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33 break;
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34 case TRAU_FT_EFR:
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35 srcbuf = dl_frame_efr;
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36 break;
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37 default:
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38 return;
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39 }
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40 msg = msgb_alloc_c(g_ctx, DL_OUTPUT_LEN, "TRAU-DL-frame");
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41 if (!msg)
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42 return;
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43 outbuf = msgb_put(msg, DL_OUTPUT_LEN);
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44 memcpy(outbuf, srcbuf, DL_OUTPUT_LEN);
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45 osmo_i460_mux_enqueue(ab->schan, msg);
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46 }
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47
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48 void transmit_e1_ts(void)
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49 {
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50 uint8_t buf[160];
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51 int nr;
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52
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53 for (nr = 0; nr < ABIS_SUBSLOTS; nr++)
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54 tx_service_subslot(nr);
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55 osmo_i460_mux_out(&i460_ts, buf, 160);
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56 write(ts_fd, buf, 160);
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57 }