nRF5340 errors in multi-NUS central

RE: nRF5340 errors in multi-NUS central

JPhilippe — Mon, 24 Jul 2023 13:14:09 GMT

Thank's a lot Hung.

RE: nRF5340 errors in multi-NUS central

Hung Bui — Mon, 24 Jul 2023 11:41:20 GMT

Hi,
I think most likely it's CONFIG_BT_MAX_CONN=4 needed.
It's because you need to configure the hci_rpmsg child image so that it will be flashed on the netcore of the NRF53 (the BLE controller).
On the nRF52 there is no netcore and the configuration is automatically added to the BLE controller when you configure the application.
opcode 0x200d = LE Create Connection

RE: nRF5340 errors in multi-NUS central

JPhilippe — Mon, 24 Jul 2023 07:55:28 GMT

Hello again,

I found a solution that works!

taking Laird CP's BLE_gateway_Firmware application as an example, I modified the child_image/hci_rpmsg.conf file like this:

#
# Copyright (c) 2021 Nordic Semiconductor
#
# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
#

CONFIG_BT_CTLR_SDC_MAX_CONN_EVENT_LEN_DEFAULT=4000000

CONFIG_BT_CTLR_DATA_LENGTH_MAX=251
CONFIG_BT_BUF_ACL_RX_SIZE=502
CONFIG_BT_BUF_ACL_TX_SIZE=502

CONFIG_BT_MAX_CONN=10

#-------------------------------------

CONFIG_RPMSG_SERVICE=y
CONFIG_RPMSG_SERVICE_MODE_REMOTE=y

CONFIG_HEAP_MEM_POOL_SIZE=8192

CONFIG_MAIN_STACK_SIZE=512
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
CONFIG_BT=y
CONFIG_BT_HCI_RAW=y
CONFIG_BT_MAX_CONN=4
CONFIG_BT_CTLR_ASSERT_HANDLER=y
CONFIG_BT_HCI_RAW_RESERVE=1

CONFIG_ASSERT=y
CONFIG_DEBUG_INFO=y
CONFIG_EXCEPTION_STACK_TRACE=y

I don't know which CONF_... are really essential but it works.

Good luck from France to all developers ...