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50 lines
1.6 KiB
Markdown
50 lines
1.6 KiB
Markdown
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These samples are meant to be used with the [PTS Dongel](https://bluekitchen-gmbh.com/bluetooth-pts-with-nordic-nrf52840-usb-dongle/) or an equivalent setup like
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the one described in here using a nrf5340dk.
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# nrf5340dk as HCI dongle
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for this a working [Zephyr](https://www.zephyrproject.org/) build environment is required, where the setup of Zephyr is beyond the scope of this document.
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The nrf5340 is a dual core SOC for which the network core handles the low level radio control and the application core handles the actual application.
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So to make a working dongle the network core and the application core need to be programmed.
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### network core / Packetcraft LL
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for nrf5340 the latest netcore firmware is located at [sdk-nrf](https://github.com/nrfconnect/sdk-nrf/tree/main/lib/bin/bt_ll_acs_nrf53/bin)
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to program it:
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```sh
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nrfjprog --program ble5-ctr-rpmsg_<version number>.hex --chiperase --coprocessor CP_NETWORK -r
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```
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### application core
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the `hci_uart` sample is used here over USB CDC
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build using:
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```sh
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west build -b nrf5340dk_nrf5340_cpuapp -- -DDTC_OVERLAY_FILE=usb.overlay -DOVERLAY_CONFIG=overlay-usb.conf
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```
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with `usb.overlay` specifying to use USB CDC instead of a physical UART
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```c
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/*
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* Copyright (c) 2021 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
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*/
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/ {
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chosen {
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zephyr,bt-c2h-uart = &cdc_acm_uart0;
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};
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};
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&zephyr_udc0 {
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cdc_acm_uart0: cdc_acm_uart0 {
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compatible = "zephyr,cdc-acm-uart";
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};
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};
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```
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and `overlay-usb.conf` to enable USB
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```make
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CONFIG_USB_DEVICE_STACK=y
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CONFIG_USB_DEVICE_PRODUCT="Zephyr HCI UART sample"
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CONFIG_USB_CDC_ACM=y
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CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=n
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```
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