Initial commit for hci_usb

.gitignore

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+# editors
+*.swp
+*~
+
+# build
+/build*/

CMakeLists.txt

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+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(hci_usb)
+
+include(${ZEPHYR_BASE}/samples/subsys/usb/common/common.cmake)
+target_sources(app PRIVATE src/main.c)

Kconfig

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+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+# Source common USB sample options used to initialize new experimental USB
+# device stack. The scope of these options is limited to USB samples in project
+# tree, you cannot use them in your own application.
+source "samples/subsys/usb/common/Kconfig.sample_usbd"
+
+source "Kconfig.zephyr"

README.rst

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+.. zephyr:code-sample:: bluetooth_hci_usb
+   :name: HCI USB
+   :relevant-api: hci_raw bluetooth _usb_device_core_api usbd_api
+
+   Turn a Zephyr board into a USB Bluetooth dongle (compatible with all operating systems).
+
+Overview
+********
+
+Make a USB Bluetooth dongle out of Zephyr. Requires USB device support from the
+board it runs on (e.g. :ref:`nrf52840dk_nrf52840` supports both Bluetooth LE and USB).
+
+Requirements
+************
+
+* Bluetooth stack running on the host (e.g. BlueZ)
+* A board with Bluetooth and USB support in Zephyr
+
+Building and Running
+********************
+This sample can be found under :zephyr_file:`samples/bluetooth/hci_usb` in the
+Zephyr tree.
+
+See :zephyr:code-sample-category:`bluetooth` samples for details.

prj.conf

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+CONFIG_BT=y
+CONFIG_BT_HCI_RAW=y
+
+CONFIG_USB_DEVICE_STACK=y
+CONFIG_USB_DEVICE_PID=0x000B
+CONFIG_USB_DEVICE_BLUETOOTH=y
+CONFIG_USB_DEVICE_BLUETOOTH_VS_H4=n
+CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=n
+
+# We dont want any console or CDC ACM that may cause BlueZ to not detect hci_usb
+CONFIG_SERIAL=n
+CONFIG_CONSOLE=n
+CONFIG_UART_CONSOLE=n
+
+# Workaround: Unable to allocate command buffer when using K_NO_WAIT since
+# Host number of completed commands does not follow normal flow control.
+CONFIG_BT_BUF_CMD_TX_COUNT=10

sample.yaml

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+sample:
+  name: Bluetooth over USB sample
+tests:
+  sample.bluetooth.hci_usb:
+    harness: bluetooth
+    depends_on:
+      - usb_device
+      - ble
+    tags:
+      - usb
+      - bluetooth
+  sample.bluetooth.hci_usb.device_next:
+    harness: bluetooth
+    depends_on:
+      - usb_device
+      - ble
+    tags:
+      - usb
+      - bluetooth
+    extra_args: CONF_FILE="usbd_next_prj.conf"
+    platform_allow: nrf52840dk/nrf52840

src/main.c

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+/*
+ * Copyright (c) 2018 Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/kernel.h>
+#include <zephyr/sys/printk.h>
+#include <zephyr/usb/usb_device.h>
+#include <zephyr/usb/usbd.h>
+
+#if defined(CONFIG_USB_DEVICE_STACK_NEXT)
+#include <sample_usbd.h>
+
+static int enable_usb_device_next(void)
+{
+	struct usbd_context *sample_usbd = sample_usbd_init_device(NULL);
+
+	if (sample_usbd == NULL) {
+		printk("Failed to initialize USB device");
+		return -ENODEV;
+	}
+
+	return usbd_enable(sample_usbd);
+}
+#endif /* CONFIG_USB_DEVICE_STACK_NEXT */
+
+int main(void)
+{
+	int ret;
+
+#if defined(CONFIG_USB_DEVICE_STACK_NEXT)
+	ret = enable_usb_device_next();
+#else
+	ret = usb_enable(NULL);
+#endif
+
+	if (ret != 0) {
+		printk("Failed to enable USB");
+		return 0;
+	}
+
+	printk("Bluetooth over USB sample\n");
+	return 0;
+}

usbd_next_prj.conf

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+CONFIG_STDOUT_CONSOLE=y
+CONFIG_GPIO=y
+CONFIG_SERIAL=y
+CONFIG_UART_INTERRUPT_DRIVEN=y
+CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=n
+
+CONFIG_BT=y
+CONFIG_BT_HCI_RAW=y
+
+CONFIG_USB_DEVICE_STACK_NEXT=y
+CONFIG_SAMPLE_USBD_PID=0x000b
+CONFIG_SAMPLE_USBD_PRODUCT="Zephyr USBD BT HCI"
+CONFIG_USBD_BT_HCI=y
+
+CONFIG_LOG=y
+CONFIG_USBD_LOG_LEVEL_WRN=y
+CONFIG_UDC_DRIVER_LOG_LEVEL_WRN=y