prj.conf

#
# Copyright (c) 2024-2025 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
#
################################################################################
# Application Configuration

CONFIG_DESKTOP_INIT_LOG_MOTION_EVENT=n
CONFIG_DESKTOP_INIT_LOG_HID_REPORT_EVENT=n
CONFIG_DESKTOP_INIT_LOG_HID_REPORT_SENT_EVENT=n
CONFIG_CAF_INIT_LOG_KEEP_ALIVE_EVENTS=n

CONFIG_DESKTOP_ROLE_HID_PERIPHERAL=y
CONFIG_DESKTOP_PERIPHERAL_TYPE_MOUSE=y
CONFIG_DESKTOP_DEVICE_PID=0x52DE
CONFIG_DESKTOP_HID_BOOT_INTERFACE_MOUSE=y

# Application supports 2 HID subscribers: HID over GATT (BLE) and a single USB HID instance
CONFIG_DESKTOP_HID_STATE_SUBSCRIBER_COUNT=2

CONFIG_DESKTOP_MOTION_BUTTONS_ENABLE=y
CONFIG_DESKTOP_MOTION_BUTTONS_UP_KEY_ID=0
CONFIG_DESKTOP_MOTION_BUTTONS_DOWN_KEY_ID=3
CONFIG_DESKTOP_MOTION_BUTTONS_LEFT_KEY_ID=2
CONFIG_DESKTOP_MOTION_BUTTONS_RIGHT_KEY_ID=1

CONFIG_CAF_BUTTONS=y
CONFIG_CAF_BUTTONS_POLARITY_INVERSED=y
CONFIG_CAF_BUTTONS_PM_KEEP_ALIVE=n

CONFIG_CAF_CLICK_DETECTOR=y

CONFIG_CAF_LEDS=y
CONFIG_CAF_LEDS_GPIO=y

CONFIG_DESKTOP_USB_ENABLE=y
# Enable the only USB stack that supports USBHS
CONFIG_DESKTOP_USB_STACK_NEXT=y

# Suspend Bluetooth while USB is connected to improve USBHS report rate.
CONFIG_DESKTOP_BLE_ADV_CTRL_ENABLE=y
CONFIG_DESKTOP_BLE_ADV_CTRL_SUSPEND_ON_USB=y

# The LLPM must be explicitly enabled, as the Bluetooth Controller
# is not part of the main application.
CONFIG_CAF_BLE_USE_LLPM=y

CONFIG_DESKTOP_BLE_USE_DEFAULT_ID=y

CONFIG_DESKTOP_BLE_PEER_CONTROL=y
CONFIG_DESKTOP_BLE_PEER_CONTROL_BUTTON=0x0000
CONFIG_DESKTOP_BLE_PEER_ERASE_ON_START=y

CONFIG_DESKTOP_BLE_SECURITY_FAIL_TIMEOUT_S=10
CONFIG_DESKTOP_BLE_LOW_LATENCY_LOCK=y

CONFIG_DESKTOP_CONFIG_CHANNEL_ENABLE=y
CONFIG_DESKTOP_CONFIG_CHANNEL_OUT_REPORT=y
CONFIG_DESKTOP_CONFIG_CHANNEL_DFU_ENABLE=y

CONFIG_DESKTOP_DFU_MCUMGR_ENABLE=y
CONFIG_CAF_INIT_LOG_BLE_SMP_TRANSFER_EVENTS=n

################################################################################
# Zephyr Configuration

CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=3584
CONFIG_ISR_STACK_SIZE=2560
CONFIG_MAIN_STACK_SIZE=2816
CONFIG_BT_RX_STACK_SIZE=2048
CONFIG_BT_HCI_TX_STACK_SIZE_WITH_PROMPT=y
CONFIG_BT_HCI_TX_STACK_SIZE=1536
CONFIG_IDLE_STACK_SIZE=512

CONFIG_BOOT_BANNER=n
CONFIG_NCS_BOOT_BANNER=n

CONFIG_NUM_COOP_PRIORITIES=10
CONFIG_NUM_PREEMPT_PRIORITIES=15

CONFIG_HEAP_MEM_POOL_SIZE=2560

CONFIG_HW_STACK_PROTECTION=y
CONFIG_RESET_ON_FATAL_ERROR=n

CONFIG_GPIO=y

# Optimize for size to reduce memory footprint.
CONFIG_SIZE_OPTIMIZATIONS=y

CONFIG_REBOOT=y

CONFIG_LED=y
# The target uses GPIOs to control LEDs.
CONFIG_LED_GPIO=y
# Disable unused LED driver to reduce memory footprint.
CONFIG_LED_PWM=n

# The UDC DWC2 DMA support is experimental. Disable the feature to improve USB stability. Since nRF
# Desktop uses only small HID reports (size < 64 bytes), the DMA doesn't improve performance.
CONFIG_UDC_DWC2_DMA=n

CONFIG_BT_MAX_PAIRED=2
CONFIG_BT_ID_MAX=3

# Accepting any values for Bluetooth LE connection parameters must be explicitly enabled, as the
# Bluetooth Controller is not part of the main application.
CONFIG_BT_CONN_PARAM_ANY=y

# Enable MCUmgr Bluetooth transport
CONFIG_MCUMGR_TRANSPORT_BT=y
CONFIG_MCUMGR_TRANSPORT_BT_PERM_RW_ENCRYPT=y

# Allow for large Bluetooth data packets.
CONFIG_BT_L2CAP_TX_MTU=498
CONFIG_BT_BUF_ACL_RX_SIZE=502
CONFIG_BT_BUF_ACL_TX_SIZE=251

# Enable the MCUmgr Packet Reassembly feature over Bluetooth and its configuration dependencies.
# MCUmgr buffer size is optimized to fit one SMP packet divided into five Bluetooth Write Commands,
# transmitted with the maximum possible MTU value: 498 bytes.
CONFIG_MCUMGR_TRANSPORT_BT_REASSEMBLY=y
CONFIG_MCUMGR_TRANSPORT_NETBUF_SIZE=2475
CONFIG_MCUMGR_TRANSPORT_WORKQUEUE_STACK_SIZE=4096

# Allow a DFU host to retrieve information about the number and size of MCUmgr buffers.
# The nRF Connect Device Manager uses this information to speed up the DFU.
CONFIG_MCUMGR_GRP_OS=y
CONFIG_MCUMGR_GRP_OS_MCUMGR_PARAMS=y

CONFIG_STREAM_FLASH=y
CONFIG_IMG_MANAGER=y
CONFIG_MCUBOOT_IMG_MANAGER=y

# Configure Zephyr system power management
CONFIG_PM=y

# Temporarily disable Link Time Optimization (LTO) to prevent linker warnings about the type
# mismatch (-Wlto-type-mismatch) that are caused by the device_deps.c file. The device_deps.c
# file is autogenerated and its generation is controlled by the CONFIG_DEVICE_DEPS Kconfig option.
# This file is required by the Zephyr domain driver to notify child devices in the domain to turn
# on or off when the domain itself is powered up or down.
CONFIG_LTO=n
CONFIG_ISR_TABLES_LOCAL_DECLARATION=n

################################################################################
# Debug logs configuration

CONFIG_ASSERT=y
CONFIG_ASSERT_LEVEL=2

# UART logging is one of two suggested ways of reading logs on nRF54H20DK.
CONFIG_DESKTOP_LOG=y
CONFIG_DESKTOP_LOG_UART=y
CONFIG_DESKTOP_LOG_RTT=n

# Enable code partitioning with DTS
CONFIG_USE_DT_CODE_PARTITION=y

################################################################################
# DFU configuration