### Start Intray for Audio Capture

Source: https://github.com/heywillow/willow/blob/main/NOTES.md

Use this command to start the intray tool for capturing audio data to a specified directory. Intray appends suffixes to filenames if they already exist.

```bash
./intray-x86_64-unknown-linux-musl --dir /tmp
```

--------------------------------

### Configuration Command

Source: https://github.com/heywillow/willow/wiki/Local-Command-Support

Enable Multinet support during the Willow configuration process. Ensure PCM codec is selected to reveal the Multinet option.

```bash
./utils.sh config
```

--------------------------------

### Build Command

Source: https://github.com/heywillow/willow/wiki/Local-Command-Support

The build process utilizes a Python script to generate Multinet grammar and mapping files for local command detection.

```bash
utils.sh build
```

--------------------------------

### Create SPIFFS Partition Image

Source: https://github.com/heywillow/willow/blob/main/main/CMakeLists.txt

Creates a SPIFFS partition image named 'user' from the '../spiffs/user' directory and places it in the project.

```cmake
spiffs_create_partition_image(user ../spiffs/user FLASH_IN_PROJECT)
```

--------------------------------

### Willow CMakeLists.txt Boilerplate

Source: https://github.com/heywillow/willow/blob/main/CMakeLists.txt

These lines must be included in your project's CMakeLists.txt in this exact order for CMake to function correctly.

```cmake
cmake_minimum_required(VERSION 3.5)

if($ENV{MULTINET})
    message("Enabling MultiNet support. Please note we will not provide support. Issues related to MultiNet will be closed without resolution.")
    add_definitions(-DWILLOW_SUPPORT_MULTINET)
endif()

if(DEFINED ENV{WILLOW_VERSION})
    add_definitions(-DWILLOW_USER_AGENT="Willow/$ENV{WILLOW_VERSION}")
else()
    add_definitions(-DWILLOW_USER_AGENT="Willow/0.1")
endif()

set(EXCLUDE_COMPONENTS
    "adf_utils"
    "app_trace"
    "battery_service"
    "bluetooth_service"
    "cmock"
    "coredump_upload_service"
    "esp_codec_dev"
    "esp_eth"
    "esp_event_cast"
    "esp_gdbstub"
    "esp_hid"
    "esp_http_server"
    "esp_https_ota"
    "esp_https_server"
    "esp_local_ctrl"
    "espcoredump"
    "idf_test"
    "ieee802154"
    "mqtt"
    "openthread"
    "ota_service"
    "perfmon"
    "playlist"
    "protobuf-c"
    "protocomm"
    "touch_element"
    "ulp"
    "unity"
    "usb"
    "wifi_provisioning"
)

include($ENV{ADF_PATH}/CMakeLists.txt)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)

project(willow)
```

--------------------------------

### Play Raw Audio with ffplay

Source: https://github.com/heywillow/willow/blob/main/NOTES.md

This command plays back raw audio data captured by intray using ffplay. Ensure the format options match the captured audio stream.

```bash
ffplay -f s16le -ac 1 -ar 16000 willow.raw
```

--------------------------------

### Register Willow Component with Source and Include Directories

Source: https://github.com/heywillow/willow/blob/main/main/CMakeLists.txt

Registers the main Willow component, specifying source and include directories. Conditionally includes the 'net' directory if CONFIG_WILLOW_ETHERNET is enabled.

```cmake
if(CONFIG_WILLOW_ETHERNET)
    set(WILLOW_ETHERNET_SRC_DIRS "net")
endif()

idf_component_register(
    SRC_DIRS
        "."
        "endpoint"
        "${WILLOW_ETHERNET_SRC_DIRS}"
    INCLUDE_DIRS
        "."
        "${WILLOW_ETHERNET_SRC_DIRS}"
    PRIV_REQUIRES
        app_update
        audio_board
        audio_hal
        audio_pipeline
        audio_recorder
        audio_sal
        audio_stream
        esp_http_client
        esp_peripherals
        esp_websocket_client
        input_key_service
        spiffs
)
```

--------------------------------

### SDK Configuration Sanity Checks for Wi-Fi Credentials

Source: https://github.com/heywillow/willow/blob/main/main/CMakeLists.txt

Performs sanity checks on Wi-Fi credentials if SDK configuration sanity checks are enabled and Ethernet is not configured. Validates that the Wi-Fi passphrase contains only ASCII characters and meets length requirements.

```cmake
# sdkconfig sanity checks
if($ENV{WILLOW_SDKCONFIG_SANITY_CHECKS})
    if (NOT CONFIG_WILLOW_ETHERNET)
        string(REGEX MATCH "^[ -~]+" WIFI_PASSPHRASE "${CONFIG_WIFI_PASSWORD}")
        if(NOT "${CONFIG_WIFI_PASSWORD}" STREQUAL "${WIFI_PASSPHRASE}")
            message(FATAL_ERROR "Wi-Fi WPA passphrase must only contain ASCII characters")
        endif()

        string(LENGTH "${CONFIG_WIFI_PASSWORD}" WIFI_PLEN)
        if(WIFI_PLEN LESS 8 OR WIFI_PLEN GREATER 63)
            message(FATAL_ERROR "Wi-Fi WPA passphrase must be between 8 and 63 ASCII characters")
        endif()
    endif()

endif()
```

--------------------------------

### Generate NVS Partition Binary

Source: https://github.com/heywillow/willow/blob/main/NOTES.md

This command generates a binary NVS partition file from a CSV definition. Specify the version, input CSV file, output binary file, and partition size.

```bash
/opt/esp/idf/components/nvs_flash/nvs_partition_generator/nvs_partition_gen.py generate --version 2 nvs.csv nvs.bin 0x24000
```

--------------------------------

### Analyze Crash Dump with addr2line

Source: https://github.com/heywillow/willow/blob/main/NOTES.md

Use addr2line to translate memory addresses from a crash dump into human-readable source code locations. Provide the ELF file and the backtrace addresses.

```bash
/opt/esp/tools/xtensa-esp32s3-elf/esp-2021r2-patch5-8.4.0/xtensa-esp32s3-elf/bin/xtensa-esp32s3-elf-addr2line -e build/willow.elf 0x42043afc:0x3fcaf490 0x42042b4a:0x3fcaf4b0 0x420245f6:0x3fcaf4d0 0x42024637:0x3fcaf840 0x420105ea:0x3fcaf860 0x42008b20:0x3fcaf890 0x4211bd17:0x3fcafac0
```

--------------------------------

### Append Warning Flag for C Compiler

Source: https://github.com/heywillow/willow/blob/main/main/CMakeLists.txt

Appends the -Werror flag to C compiler flags, treating all warnings as errors.

```cmake
string(APPEND CMAKE_C_FLAGS -Werror)
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.