zephyr/samples/bluetooth/iso_central/overlay-bt_ll_sw_split.conf

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# Zephyr Bluetooth Controller
CONFIG_BT_LL_SW_SPLIT=y
# Zephyr Bluetooth LE Controller needs 16 event buffers to generate Extended
# Advertising Report for receiving the complete 1650 bytes of data
CONFIG_BT_BUF_EVT_RX_COUNT=16
# Set maximum scan data length for Extended Scanning in Bluetooth LE Controller
CONFIG_BT_CTLR_SCAN_DATA_LEN_MAX=1650
# Increase Zephyr Bluetooth LE Controller Rx buffer to receive complete chain
# of PDUs
CONFIG_BT_CTLR_RX_BUFFERS=9
# Sufficient ISO SDU and PDU length for this sample with ISO_TX_MTU of 247
CONFIG_BT_CTLR_CONN_ISO_SDU_LEN_MAX=247
CONFIG_BT_CTLR_CONN_ISO_PDU_LEN_MAX=251
# Number of supported streami sources and sinks
CONFIG_BT_CTLR_ISOAL_SOURCES=2
CONFIG_BT_CTLR_ISOAL_SINKS=1
# Support the highest SDU size required by this sample 247 + 8 bytes of HCI ISO Data
# packet overhead (timestamp and HCI ISO Data packet header)
CONFIG_BT_CTLR_ISO_TX_BUFFER_SIZE=255
CONFIG_BT_CTLR_ISO_TX_BUFFERS=4
# Use Low Latency Connected ISO policy
CONFIG_BT_CTLR_ADVANCED_FEATURES=y
CONFIG_BT_CTLR_CONN_ISO_LOW_LATENCY_POLICY=y
# Use the below if the sample is sending stale packet sequence number
# CONFIG_BT_CTLR_ISOAL_SN_STRICT=n