96a13712ad
LL_CIS_IND starts a ticker for the created CIG, using the event_counter and offset provided. Ticker generates callbacks to lll_peripheral_iso_prepare. Event done with ISO (extra) type is demuxed and done handled for CIG including ticker update with drift compensation. TODO: Handle multiple CISes as well as pause/resume and scheduling latency. Signed-off-by: Morten Priess <mtpr@oticon.com>
77 lines
2.4 KiB
C
77 lines
2.4 KiB
C
/*
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* Copyright (c) 2021 Demant
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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struct node_tx_iso {
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union {
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void *next;
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memq_link_t *link;
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};
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uint64_t payload_number : 39; /* cisPayloadNumber */
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uint8_t pdu[];
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};
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struct lll_conn_iso_stream_rxtx {
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uint8_t phy; /* PHY */
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uint8_t burst_number; /* Burst number (BN) */
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uint8_t flush_timeout; /* Flush timeout (FT) */
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uint8_t max_octets; /* Maximum PDU size */
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};
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struct lll_conn_iso_stream {
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uint16_t acl_handle; /* ACL connection handle (for encryption,
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* channel map, crc init)
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*/
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uint16_t handle; /* CIS handle */
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/* Connection parameters */
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uint8_t access_addr[4]; /* Access address */
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uint32_t offset; /* Offset of CIS from start of CIG in us */
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uint32_t sub_interval; /* Interval between subevents in us */
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uint32_t subevent_length; /* Length of subevent in us */
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uint8_t num_subevents; /* Number of subevents */
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struct lll_conn_iso_stream_rxtx rx; /* RX parameters */
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struct lll_conn_iso_stream_rxtx tx; /* TX parameters */
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/* Event and payload counters */
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uint64_t event_count : 39; /* cisEventCount */
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uint64_t rx_payload_number : 39; /* cisPayloadNumber */
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/* Acknowledgment and flow control */
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uint8_t sn:1; /* Sequence number */
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uint8_t nesn:1; /* Next expected sequence number */
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uint8_t cie:1; /* Close isochronous event */
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/* Resumption information */
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uint8_t next_subevent; /* Next subevent to schedule */
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/* Transmission queue */
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MEMQ_DECLARE(tx);
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memq_link_t link_tx;
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memq_link_t *link_tx_free;
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};
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struct lll_conn_iso_group {
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struct lll_hdr hdr;
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uint16_t handle; /* CIG handle (internal) */
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uint8_t num_cis; /* Number of CISes in this CIG */
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uint8_t role; /* 0: CENTRAL, 1: PERIPHERAL*/
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#if defined(CONFIG_BT_CTLR_CONN_ISO_STREAMS_PER_GROUP)
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uint16_t cis_handles[CONFIG_BT_CTLR_CONN_ISO_STREAMS_PER_GROUP];
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#endif /* CONFIG_BT_CTLR_CONN_ISO_STREAMS */
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/* Resumption information */
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uint8_t next_cis; /* Next CIS to schedule */
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uint32_t next_time; /* When to trigger next activity in the CIG */
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};
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int lll_conn_iso_init(void);
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int lll_conn_iso_reset(void);
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void lll_conn_iso_done(struct lll_conn_iso_group *cig, uint8_t trx_cnt,
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uint16_t prog_to_anchor_us, uint8_t mic_state);
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void lll_conn_iso_flush(uint16_t handle, struct lll_conn_iso_stream *lll);
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