diff options
Diffstat (limited to 'src/gmr1_rach_gen.c')
-rw-r--r-- | src/gmr1_rach_gen.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src/gmr1_rach_gen.c b/src/gmr1_rach_gen.c new file mode 100644 index 0000000..de4cf12 --- /dev/null +++ b/src/gmr1_rach_gen.c @@ -0,0 +1,65 @@ +/* GMR-1 RACH generation utility */ + +/* (C) 2015 by Sylvain Munaut <tnt@246tNt.com> + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <stdio.h> +#include <stdlib.h> + +#include <osmocom/core/bits.h> +#include <osmocom/core/utils.h> + +#include <osmocom/dsp/cxvec.h> + +#include <osmocom/gmr1/l1/rach.h> +#include <osmocom/gmr1/sdr/defs.h> +#include <osmocom/gmr1/sdr/pi4cxpsk.h> +#include <osmocom/gmr1/sdr/nb.h> + +int main(int argc, char *argv[]) +{ + const char *filename; + uint8_t sb_mask, rach[18]; + ubit_t ebits[494]; + struct osmo_cxvec *burst; + int rv; + + /* Check and parse args */ + if (argc != 4) { + fprintf(stderr, "Usage: %s out.cfile sb_mask payload\n", argv[0]); + return -1; + } + + filename = argv[1]; + sb_mask = strtoul(argv[2], NULL, 0); + + rv = osmo_hexparse(argv[3], rach, 18); + if (rv != 18) { + fprintf(stderr, "Invalid payload string\n"); + return -1; + } + + /* Alloc, encode, modulate, save, release */ + burst = osmo_cxvec_alloc(gmr1_rach_burst.len); + gmr1_rach_encode(ebits, rach, sb_mask); + gmr1_pi4cxpsk_mod(&gmr1_rach_burst, ebits, 0, burst); + osmo_cxvec_dbg_dump(burst, filename); + osmo_cxvec_free(burst); + + /* Done */ + return 0; +} |