gsm_04_12.h

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#pragma once
 
#include <stdint.h>
#include <osmocom/core/endian.h>
 
#define GSM412_MSG_LEN          88      /* TS 04.12 Section 3.1 */
#define GSM412_BLOCK_LEN        22      /* TS 04.12 Section 3.1 */
 
#define GSM412_SEQ_FST_BLOCK            0x0
#define GSM412_SEQ_SND_BLOCK            0x1
#define GSM412_SEQ_TRD_BLOCK            0x2
#define GSM412_SEQ_FTH_BLOCK            0x3
#define GSM412_SEQ_FST_SCHED_BLOCK      0x8
#define GSM412_SEQ_NULL_MSG             0xf
 
struct gsm412_block_type {
#if OSMO_IS_LITTLE_ENDIAN
        uint8_t seq_nr : 4,
                lb : 1,
                lpd : 2,
                spare : 1;
#elif OSMO_IS_BIG_ENDIAN
/* auto-generated from the little endian part above (libosmocore/contrib/struct_endianness.py) */
        uint8_t spare:1, lpd:2, lb:1, seq_nr:4;
#endif
} __attribute__((packed));
 
struct gsm412_sched_msg {
#if OSMO_IS_LITTLE_ENDIAN
        uint8_t beg_slot_nr : 6,
                type : 2;
        uint8_t end_slot_nr : 6,
                spare1 : 1, spare2: 1;
        uint8_t cbsms_msg_map[6];
        uint8_t data[0];
#elif OSMO_IS_BIG_ENDIAN
/* auto-generated from the little endian part above (libosmocore/contrib/struct_endianness.py) */
        uint8_t type:2, beg_slot_nr:6;
        uint8_t spare2:1, spare1:1, end_slot_nr:6;
        uint8_t cbsms_msg_map[6];
        uint8_t data[0];
#endif
} __attribute__((packed));