samples: bluetooth: fixes tmap sample issues

- Added support for CAP_COMMANDER in configuration to allow tmap-cg
 and tmap-ums roles to be validated. For CG and UMR, CAP INITIATOR
 and CAP COMMANDER roles are mandatory. Without this support, config
 "CONFIG_BT_TMAP_CG_SUPPORTED" & "CONFIG_BT_TMAP_UMS_SUPPORTED" are
 not getting defined and function fail during "valid_tmap_role()".

- Replaced iso_pool user-data size from 8 to kconfig setting
 "CONFIG_BT_CONN_TX_USER_DATA_SIZE" to allow conn_iso_send()
 to success. Without it the user-data for iso_pool configured
 with value 8 but the kconfig "BT_CONN_TX_USER_DATA_SIZE" has
 default value as 16 causes conn_iso_send() function to fail.

- Updated audio_timer_timeout() with expected QoS interval value
 to send ISO_SDU at every 10msec instead of 1 sec. Without this sink
 device receiving null-sdu most of the time as ISO interval is 10ms
 and unicast-source keep sends SDU at every 1 sec.

Signed-off-by: Nirav Agrawal <nirav.agrawal@nxp.com>

Author: nirav-agrawal

samples/bluetooth/tmap_bms/src/cap_initiator.c

@@ -29,7 +29,8 @@
 
 NET_BUF_POOL_FIXED_DEFINE(tx_pool,
 			  (BROADCAST_ENQUEUE_COUNT * CONFIG_BT_BAP_BROADCAST_SRC_STREAM_COUNT),
-			  BT_ISO_SDU_BUF_SIZE(CONFIG_BT_ISO_TX_MTU), 8, NULL);
+			  BT_ISO_SDU_BUF_SIZE(CONFIG_BT_ISO_TX_MTU),
+			  CONFIG_BT_CONN_TX_USER_DATA_SIZE, NULL);
 
 static K_SEM_DEFINE(sem_broadcast_started, 0, 1);
 static K_SEM_DEFINE(sem_broadcast_stopped, 0, 1);

samples/bluetooth/tmap_central/prj.conf

@@ -16,6 +16,7 @@ CONFIG_BT_TMAP=y
 
 # CAP support
 CONFIG_BT_CAP_INITIATOR=y
+CONFIG_BT_CAP_COMMANDER=y
 
 # CSIP support
 CONFIG_BT_CSIP_SET_COORDINATOR=y

samples/bluetooth/tmap_central/src/cap_initiator.c

@@ -35,7 +35,8 @@ static struct bt_bap_ep *unicast_sink_eps[CONFIG_BT_BAP_UNICAST_CLIENT_ASE_SNK_C
 static struct bt_bap_ep *unicast_source_eps[CONFIG_BT_BAP_UNICAST_CLIENT_ASE_SRC_COUNT];
 
 NET_BUF_POOL_FIXED_DEFINE(tx_pool, CONFIG_BT_BAP_UNICAST_CLIENT_ASE_SNK_COUNT,
-			  CONFIG_BT_ISO_TX_MTU + BT_ISO_CHAN_SEND_RESERVE, 8, NULL);
+			  BT_ISO_SDU_BUF_SIZE(CONFIG_BT_ISO_TX_MTU),
+			  CONFIG_BT_CONN_TX_USER_DATA_SIZE, NULL);
 
 static K_SEM_DEFINE(sem_cas_discovery, 0, 1);
 static K_SEM_DEFINE(sem_discover_sink, 0, 1);
@@ -411,7 +412,7 @@ static void audio_timer_timeout(struct k_work *work)
 		/* Retry later */
 	}
 
-	k_work_schedule(&audio_send_work, K_MSEC(1000));
+	k_work_schedule(&audio_send_work, K_USEC(unicast_preset_48_2_1.qos.interval));
 }
 
 int cap_initiator_init(void)