66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
/* GMR-1 RACH generation utility */
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/* (C) 2011-2019 by Sylvain Munaut <tnt@246tNt.com>
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <osmocom/core/bits.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/dsp/cxvec.h>
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#include <osmocom/gmr1/l1/rach.h>
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#include <osmocom/gmr1/sdr/defs.h>
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#include <osmocom/gmr1/sdr/pi4cxpsk.h>
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#include <osmocom/gmr1/sdr/nb.h>
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int main(int argc, char *argv[])
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{
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const char *filename;
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uint8_t sb_mask, rach[18];
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ubit_t ebits[494];
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struct osmo_cxvec *burst;
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int rv;
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/* Check and parse args */
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if (argc != 4) {
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fprintf(stderr, "Usage: %s out.cfile sb_mask payload\n", argv[0]);
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return -1;
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}
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filename = argv[1];
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sb_mask = strtoul(argv[2], NULL, 0);
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rv = osmo_hexparse(argv[3], rach, 18);
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if (rv != 18) {
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fprintf(stderr, "Invalid payload string\n");
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return -1;
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}
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/* Alloc, encode, modulate, save, release */
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burst = osmo_cxvec_alloc(gmr1_rach_burst.len);
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gmr1_rach_encode(ebits, rach, sb_mask);
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gmr1_pi4cxpsk_mod(&gmr1_rach_burst, ebits, 0, burst);
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osmo_cxvec_dbg_dump(burst, filename);
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osmo_cxvec_free(burst);
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/* Done */
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return 0;
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}
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