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Bluetooth: controller: fixup to peripheral CIS Create check instant

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In case a CIS is the first in a CIG, we should start ISO peripheral
early to allow small CIS offsets

Signed-off-by: Erik Brockhoff <erbr@oticon.com>
This commit is contained in:
Erik Brockhoff 2022-11-30 11:15:51 +01:00 • committed by Carles Cufí
commit 9f5eb0f1a8
1 changed files with 11 additions and 0 deletions
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11
subsys/bluetooth/controller/ll_sw/ull_llcp_cc.c
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@ -432,8 +432,19 @@ static void rp_cc_check_instant(struct ll_conn *conn, struct proc_ctx *ctx, uint
void *param) void *param)
{ {
uint16_t start_event_count; uint16_t start_event_count;
struct ll_conn_iso_group *cig;
cig = ll_conn_iso_group_get_by_id(ctx->data.cis_create.cig_id);
start_event_count = ctx->data.cis_create.conn_event_count; start_event_count = ctx->data.cis_create.conn_event_count;
LL_ASSERT(cig);
if (!cig->started) {
/* Start ISO peripheral one event before the requested instant
* for first CIS. This is done to be able to accept small CIS
* offsets.
*/
start_event_count--;
}
if (is_instant_reached_or_passed(start_event_count, if (is_instant_reached_or_passed(start_event_count,
cc_event_counter(conn))) { cc_event_counter(conn))) {