# VesiScan BASIC - Zephyr configuration
# Stage 1: GPIO + Power Control + LED + Debug Logging
# Stage 2: BLE (NUS)

CONFIG_GPIO=y

# Debug Message (RTT)
# Zephyr logging subsystem enable.
CONFIG_LOG=y
# Print logs immediately when log API is called.
CONFIG_LOG_MODE_IMMEDIATE=y
# Default log level: 3 = INFO.
CONFIG_LOG_DEFAULT_LEVEL=3
# Do not add ANSI color codes to logs.
CONFIG_LOG_BACKEND_SHOW_COLOR=n
# Enable printk().
CONFIG_PRINTK=y
# Send Zephyr LOG output to SEGGER RTT.
CONFIG_LOG_BACKEND_RTT=y
# Enable SEGGER RTT support.
CONFIG_USE_SEGGER_RTT=y
# Enable Zephyr console subsystem.
CONFIG_CONSOLE=y
# Send console/printk output to RTT.
CONFIG_RTT_CONSOLE=y
# If RTT buffer is full, wait instead of dropping logs.
CONFIG_LOG_BACKEND_RTT_MODE_BLOCK=y
# RTT log backend output buffer size.
CONFIG_LOG_BACKEND_RTT_OUTPUT_BUFFER_SIZE=1024

# Disable UART logging/console/serial driver. This project uses RTT instead of UART.
CONFIG_LOG_BACKEND_UART=n
CONFIG_SERIAL=n
CONFIG_UART_CONSOLE=n

# BLE stack
# Enable Zephyr Bluetooth host stack.
CONFIG_BT=y
# Keep Bluetooth internal logs at warning level.
CONFIG_BT_LOG_LEVEL_WRN=y
# Operate as a BLE peripheral device.
CONFIG_BT_PERIPHERAL=y
# Default local device name. Runtime advertising name is set from SERIAL_NO by bt_set_name().
CONFIG_BT_DEVICE_NAME="VBT260300ZZ"
# Allow runtime BLE name change with bt_set_name(SERIAL_NO).
CONFIG_BT_DEVICE_NAME_DYNAMIC=y
# Maximum runtime BLE name length. Current serial number is 12 characters.
CONFIG_BT_DEVICE_NAME_MAX=16
# Allow only one simultaneous peripheral link.
CONFIG_BT_MAX_CONN=1

# BLE NUS (Nordic UART Service)
# Enable Nordic UART Service for BLE data exchange.
CONFIG_BT_NUS=y

# BLE PHY
# Disable 2M PHY so the link stays on 1M PHY.
CONFIG_BT_CTLR_PHY_2M=n

# GATT / MTU
# Enable GATT client support. May be removable if no client API is used.
CONFIG_BT_GATT_CLIENT=y
# L2CAP TX MTU. ATT MTU is this value minus 3 bytes.
CONFIG_BT_L2CAP_TX_MTU=247
# BLE ACL TX buffer size for larger MTU packets.
CONFIG_BT_BUF_ACL_TX_SIZE=251
# BLE ACL RX buffer size for larger MTU packets.
CONFIG_BT_BUF_ACL_RX_SIZE=251

# Connection parameters
# Preferred minimum connection interval: 12 x 1.25ms = 15ms.
CONFIG_BT_PERIPHERAL_PREF_MIN_INT=12
# Preferred maximum connection interval: 12 x 1.25ms = 15ms.
CONFIG_BT_PERIPHERAL_PREF_MAX_INT=12
# Slave latency 0: do not skip connection events.
CONFIG_BT_PERIPHERAL_PREF_LATENCY=0
# Supervision timeout: 1000 x 10ms = 10s.
CONFIG_BT_PERIPHERAL_PREF_TIMEOUT=1000

# BLE security (production)
# Enable BLE Security Manager Protocol for pairing/bonding.
CONFIG_BT_SMP=y
# Allow bonding so pairing information can be stored and reused.
CONFIG_BT_BONDABLE=y
# App provides the passkey through the auth callback.
CONFIG_BT_APP_PASSKEY=y
# Require MITM-protected pairing.
CONFIG_BT_SMP_ENFORCE_MITM=y
# Allow only LE Secure Connections pairing.
CONFIG_BT_SMP_SC_ONLY=y
# Store and restore BLE bond/security information through settings.
CONFIG_BT_SETTINGS=y
# Maximum number of stored bonded peers.
CONFIG_BT_MAX_PAIRED=20

# ADC (battery)
# Enable Zephyr ADC driver for battery voltage measurement.
CONFIG_ADC=y

# I2C (IMU: ICM42670P)
# Enable Zephyr I2C driver for IMU communication.
CONFIG_I2C=y

# Direct nrfx SPIM3 driver for ADC121S051
# Enable nrfx SPIM driver for direct echo ADC SPI control.
CONFIG_NRFX_SPIM=y

# System
# Heap memory available for runtime dynamic allocation.
CONFIG_HEAP_MEM_POOL_SIZE=4096
# Stack size for Zephyr system workqueue thread.
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048

# BLE RX stack sizes
# BLE RX thread stack size. Helps prevent overflow during RX/security processing.
CONFIG_BT_RX_STACK_SIZE=4096

# DFU
# Build the application for MCUboot bootloader environment.
CONFIG_BOOTLOADER_MCUBOOT=y
# Enable zcbor library used by mcumgr/SMP/DFU CBOR payloads.
CONFIG_ZCBOR=y
# Version string used by MCUboot imgtool signing and versioned DFU zip naming.
CONFIG_MCUBOOT_IMGTOOL_SIGN_VERSION="0.0.2+9"

# Internal flash
# Enable internal flash driver.
CONFIG_FLASH=y
# Enable flash partition/slot lookup APIs.
CONFIG_FLASH_MAP=y

# Persistent application settings (FDS replacement)
# Enable Zephyr NVS storage.
CONFIG_NVS=y
# Enable Zephyr settings subsystem.
CONFIG_SETTINGS=y
# Use NVS as the settings backend.
CONFIG_SETTINGS_NVS=y
# Number of flash sectors used by settings/NVS backend.
CONFIG_SETTINGS_NVS_SECTOR_COUNT=2
# settings_storage partition size. 0x2000 = 8KB.
CONFIG_PM_PARTITION_SIZE_SETTINGS_STORAGE=0x2000

# mcumgr framework
# Enable mcumgr management framework.
CONFIG_MCUMGR=y

# mcumgr over BLE transport
# Enable mcumgr/SMP messages over BLE SMP service.
CONFIG_MCUMGR_TRANSPORT_BT=y
# Require authenticated BLE connection for mcumgr read/write operations.
CONFIG_MCUMGR_TRANSPORT_BT_PERM_RW_AUTHEN=y
# Reassemble SMP packets fragmented over BLE.
CONFIG_MCUMGR_TRANSPORT_BT_REASSEMBLY=y
# mcumgr transport receive buffer size for DFU image chunks.
CONFIG_MCUMGR_TRANSPORT_NETBUF_SIZE=1024

# CBOR (mcumgr/SMP/DFU command payload format)
# Maximum CBOR byte/string length.
CONFIG_ZCBOR_MAX_STR_LEN=512

# mcumgr callbacks/hooks
# Enable mcumgr management event notification hooks.
CONFIG_MCUMGR_MGMT_NOTIFICATION_HOOKS=y
# Enable image upload/DFU status hooks.
CONFIG_MCUMGR_GRP_IMG_STATUS_HOOKS=y
# Enable SMP command done/failed status hooks.
CONFIG_MCUMGR_SMP_COMMAND_STATUS_HOOKS=y

# mcumgr command groups
# Enable image management group: upload, test, confirm, state.
CONFIG_MCUMGR_GRP_IMG=y
# Enable OS management group: reset and OS-related commands.
CONFIG_MCUMGR_GRP_OS=y

# MCUboot image handling
# Enable image manager for MCUboot image state/verify/confirm operations.
CONFIG_IMG_MANAGER=y
# Write uploaded image data to flash as a stream.
CONFIG_STREAM_FLASH=y

# Netcore HCI IPC
# nRF52840 build does not use network core HCI IPC.
#CONFIG_SB_CONFIG_NETCORE_HCI_IPC=y
#SB_CONFIG_NETCORE_HCI_IPC=y