hello, i'm using nrf connect sdk version 2.3, and nrf5340dk board.
1. i want ble data length extension, so i am using this function after connected call back ,in central uart example project
static int connection_configuration_set()
{
int err;
struct bt_le_conn_param* conn_param;
struct bt_conn_le_phy_param phy;
struct bt_conn_le_data_len_param data_len;
conn_param = BT_LE_CONN_PARAM(INTERVAL_MIN, INTERVAL_MAX, 0, 400);
phy.pref_tx_phy = BT_GAP_LE_PHY_2M;
phy.pref_rx_phy = BT_GAP_LE_PHY_2M;
data_len.tx_max_len = 251;
data_len.tx_max_time = 2120;
err = bt_conn_le_phy_update(default_conn, &phy);
if (err) {
printk("PHY update failed: %d\n", err);
return err;
}
printk("PHY update pending");
err = k_sem_take(&throughput_sem, THROUGHPUT_CONFIG_TIMEOUT);
if (err) {
printk("PHY update timeout");
return err;
}
data_length_req = true;
err = bt_conn_le_data_len_update(default_conn, &data_len);
if (err) {
printk("LE data length update failed: %d",
err);
return err;
}
printk("LE Data length update pending");
err = k_sem_take(&throughput_sem, THROUGHPUT_CONFIG_TIMEOUT);
if (err) {
printk("LE Data Length update timeout");
return err;
}
err = bt_conn_le_param_update(default_conn, conn_param);
if (err) {
printk(
"Connection parameters update failed: %d",
err);
return err;
}
printk("Connection parameters update pending");
err = k_sem_take(&throughput_sem, THROUGHPUT_CONFIG_TIMEOUT);
if (err) {
printk("Connection parameters update timeout");
return err;
}
return 0;
}
but le_data_length_updated print that log:
it looks like data length not updated, so i have question for update data length
how can i set 251 byte ble data length
this is my prj.conf
central uart prj.conf
# # Copyright (c) 2018 Nordic Semiconductor # # SPDX-License-Identifier: LicenseRef-Nordic-5-Clause # # Enable the UART driver CONFIG_UART_ASYNC_API=y CONFIG_NRFX_UARTE0=y CONFIG_SERIAL=y CONFIG_CONSOLE=y CONFIG_UART_CONSOLE=y # Enable the BLE stack with GATT Client configuration CONFIG_BT=y CONFIG_BT_CENTRAL=y CONFIG_BT_SMP=y CONFIG_BT_GATT_CLIENT=y # Enable the BLE modules from NCS CONFIG_BT_NUS_CLIENT=y CONFIG_BT_SCAN=y CONFIG_BT_SCAN_FILTER_ENABLE=y CONFIG_BT_SCAN_UUID_CNT=1 CONFIG_BT_GATT_DM=y CONFIG_HEAP_MEM_POOL_SIZE=2048 CONFIG_BT_USER_DATA_LEN_UPDATE=y CONFIG_BT_USER_PHY_UPDATE=y CONFIG_BT_GAP_AUTO_UPDATE_CONN_PARAMS=n CONFIG_BT_L2CAP_TX_MTU=247 #CONFIG_BT_CTLR_DATA_LENGTH_MAX=251 CONFIG_BT_BUF_ACL_TX_SIZE=251 CONFIG_BT_BUF_ACL_RX_SIZE=251 # This example requires more workqueue stack CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048 # Enable bonding CONFIG_BT_SETTINGS=y CONFIG_FLASH=y CONFIG_FLASH_PAGE_LAYOUT=y CONFIG_FLASH_MAP=y CONFIG_NVS=y CONFIG_SETTINGS=y # Config logger CONFIG_LOG=y CONFIG_USE_SEGGER_RTT=y CONFIG_LOG_BACKEND_RTT=y CONFIG_LOG_BACKEND_UART=n CONFIG_LOG_PRINTK=n CONFIG_ASSERT=y
central uart child_image/rpc_host.conf
# # Copyright (c) 2021 Nordic Semiconductor # # SPDX-License-Identifier: LicenseRef-Nordic-5-Clause # CONFIG_BT=y CONFIG_BT_PERIPHERAL=n CONFIG_BT_CENTRAL=y CONFIG_BT_OBSERVER=y CONFIG_BT_DEVICE_NAME="Zephyr" CONFIG_BT_SMP=y CONFIG_BT_GATT_CLIENT=y CONFIG_BT_GATT_DM=y CONFIG_HEAP_MEM_POOL_SIZE=2048 CONFIG_BT_DEBUG_LOG=y CONFIG_BT_GATT_DM_DATA_PRINT=y CONFIG_SETTINGS=y CONFIG_BT_SETTINGS=y CONFIG_NRF_RPC_THREAD_STACK_SIZE=2048 CONFIG_BT_CTLR_DATA_LENGTH_MAX=251 CONFIG_BT_BUF_ACL_RX_SIZE=251 CONFIG_BT_AUTO_DATA_LEN_UPDATE=y
peripheral uart prj.conf
# # Copyright (c) 2018 Nordic Semiconductor # # SPDX-License-Identifier: LicenseRef-Nordic-5-Clause # # Enable the UART driver CONFIG_UART_ASYNC_API=y CONFIG_NRFX_UARTE0=y CONFIG_SERIAL=y CONFIG_GPIO=y # Make sure printk is printing to the UART console CONFIG_CONSOLE=y CONFIG_UART_CONSOLE=y CONFIG_HEAP_MEM_POOL_SIZE=2048 CONFIG_BT=y CONFIG_BT_PERIPHERAL=y CONFIG_BT_DEVICE_NAME="Nordic_UART_Service" CONFIG_BT_DEVICE_APPEARANCE=833 CONFIG_BT_MAX_CONN=1 CONFIG_BT_MAX_PAIRED=1 CONFIG_BT_USER_DATA_LEN_UPDATE=y CONFIG_BT_USER_PHY_UPDATE=y CONFIG_BT_GAP_AUTO_UPDATE_CONN_PARAMS=n CONFIG_BT_L2CAP_TX_MTU=247 #CONFIG_BT_CTLR_DATA_LENGTH_MAX=251 CONFIG_BT_BUF_ACL_TX_SIZE=251 CONFIG_BT_BUF_ACL_RX_SIZE=251 # Enable the NUS service CONFIG_BT_NUS=y # Enable bonding CONFIG_BT_SETTINGS=y CONFIG_FLASH=y CONFIG_FLASH_PAGE_LAYOUT=y CONFIG_FLASH_MAP=y CONFIG_NVS=y CONFIG_SETTINGS=y # Enable DK LED and Buttons library CONFIG_DK_LIBRARY=y # This example requires more workqueue stack CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048 # Config logger CONFIG_LOG=y CONFIG_USE_SEGGER_RTT=y CONFIG_LOG_BACKEND_RTT=y CONFIG_LOG_BACKEND_UART=n CONFIG_LOG_PRINTK=n CONFIG_ASSERT=y CONFIG_SPI=y CONFIG_SPI_ASYNC=y CONFIG_SPI_SLAVE=y
peripheral uart project no child_image/rpc_host.conf
