diff options
Diffstat (limited to 'main/puzzle')
| -rw-r--r-- | main/puzzle/neo/esp-neopuzzle/.devcontainer/Dockerfile | 47 | ||||
| -rw-r--r-- | main/puzzle/neo/esp-neopuzzle/.devcontainer/devcontainer.json | 45 | ||||
| -rw-r--r-- | main/puzzle/neo/esp-neopuzzle/.vscode/c_cpp_properties.json | 27 | ||||
| -rw-r--r-- | main/puzzle/neo/esp-neopuzzle/.vscode/launch.json | 10 | ||||
| -rw-r--r-- | main/puzzle/neo/esp-neopuzzle/.vscode/settings.json | 17 | ||||
| -rw-r--r-- | main/puzzle/neo/esp-neopuzzle/.vscode/tasks.json | 259 | ||||
| -rw-r--r-- | main/puzzle/neo/esp-neopuzzle/CMakeLists.txt | 8 | ||||
| -rw-r--r-- | main/puzzle/neo/esp-neopuzzle/README.md | 35 | ||||
| -rw-r--r-- | main/puzzle/neo/esp-neopuzzle/main/CMakeLists.txt | 2 | ||||
| -rw-r--r-- | main/puzzle/neo/esp-neopuzzle/main/main.c | 85 |
10 files changed, 535 insertions, 0 deletions
diff --git a/main/puzzle/neo/esp-neopuzzle/.devcontainer/Dockerfile b/main/puzzle/neo/esp-neopuzzle/.devcontainer/Dockerfile new file mode 100644 index 0000000..1fe78dc --- /dev/null +++ b/main/puzzle/neo/esp-neopuzzle/.devcontainer/Dockerfile @@ -0,0 +1,47 @@ +FROM espressif/idf + +ARG DEBIAN_FRONTEND=nointeractive +ARG CONTAINER_USER=esp +ARG USER_UID=1000 +ARG USER_GID=$USER_UID + +RUN apt-get update \ + && apt install -y -q \ + cmake \ + git \ + libglib2.0-0 \ + libnuma1 \ + libpixman-1-0 \ + && rm -rf /var/lib/apt/lists/* + +# QEMU +ENV QEMU_REL=esp_develop_8.2.0_20240122 +ENV QEMU_SHA256=e7c72ef5705ad1444d391711088c8717fc89f42e9bf6d1487f9c2a326b8cfa83 +ENV QEMU_DIST=qemu-xtensa-softmmu-${QEMU_REL}-x86_64-linux-gnu.tar.xz +ENV QEMU_URL=https://github.com/espressif/qemu/releases/download/esp-develop-8.2.0-20240122/${QEMU_DIST} + +ENV LC_ALL=C.UTF-8 +ENV LANG=C.UTF-8 + +RUN wget --no-verbose ${QEMU_URL} \ + && echo "${QEMU_SHA256} *${QEMU_DIST}" | sha256sum --check --strict - \ + && tar -xf $QEMU_DIST -C /opt \ + && rm ${QEMU_DIST} + +ENV PATH=/opt/qemu/bin:${PATH} + +RUN groupadd --gid $USER_GID $CONTAINER_USER \ + && adduser --uid $USER_UID --gid $USER_GID --disabled-password --gecos "" ${CONTAINER_USER} \ + && usermod -a -G root $CONTAINER_USER && usermod -a -G dialout $CONTAINER_USER + +RUN chmod -R 775 /opt/esp/python_env/ + +USER ${CONTAINER_USER} +ENV USER=${CONTAINER_USER} +WORKDIR /home/${CONTAINER_USER} + +RUN echo "source /opt/esp/idf/export.sh > /dev/null 2>&1" >> ~/.bashrc + +ENTRYPOINT [ "/opt/esp/entrypoint.sh" ] + +CMD ["/bin/bash", "-c"]
\ No newline at end of file diff --git a/main/puzzle/neo/esp-neopuzzle/.devcontainer/devcontainer.json b/main/puzzle/neo/esp-neopuzzle/.devcontainer/devcontainer.json new file mode 100644 index 0000000..1d913ec --- /dev/null +++ b/main/puzzle/neo/esp-neopuzzle/.devcontainer/devcontainer.json @@ -0,0 +1,45 @@ +// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at: +// https://github.com/microsoft/vscode-dev-containers/tree/v0.183.0/containers/ubuntu +{ + "name": "ESP-IDF QEMU", + "build": { + "dockerfile": "Dockerfile" + }, + // Add the IDs of extensions you want installed when the container is created + "workspaceMount": "source=${localWorkspaceFolder},target=${localWorkspaceFolder},type=bind", + /* the path of workspace folder to be opened after container is running + */ + "workspaceFolder": "${localWorkspaceFolder}", + "mounts": [ + "source=extensionCache,target=/root/.vscode-server/extensions,type=volume" + ], + "customizations": { + "vscode": { + "settings": { + "terminal.integrated.defaultProfile.linux": "bash", + "idf.espIdfPath": "/opt/esp/idf", + "idf.customExtraPaths": "", + "idf.pythonBinPath": "/opt/esp/python_env/idf5.3_py3.10_env/bin/python", + "idf.toolsPath": "/opt/esp", + "idf.gitPath": "/usr/bin/git" + }, + "extensions": [ + "espressif.esp-idf-extension" + ], + }, + "codespaces": { + "settings": { + "terminal.integrated.defaultProfile.linux": "bash", + "idf.espIdfPath": "/opt/esp/idf", + "idf.customExtraPaths": "", + "idf.pythonBinPath": "/opt/esp/python_env/idf5.3_py3.10_env/bin/python", + "idf.toolsPath": "/opt/esp", + "idf.gitPath": "/usr/bin/git" + }, + "extensions": [ + "espressif.esp-idf-extension" + ], + } + }, + "runArgs": ["--privileged"] +}
\ No newline at end of file diff --git a/main/puzzle/neo/esp-neopuzzle/.vscode/c_cpp_properties.json b/main/puzzle/neo/esp-neopuzzle/.vscode/c_cpp_properties.json new file mode 100644 index 0000000..ee1cac1 --- /dev/null +++ b/main/puzzle/neo/esp-neopuzzle/.vscode/c_cpp_properties.json @@ -0,0 +1,27 @@ +{ + "configurations": [ + { + "name": "ESP-IDF", + "compilerPath": "${config:idf.toolsPathWin}\\tools\\xtensa-esp-elf\\esp-13.2.0_20230928\\xtensa-esp-elf\\bin\\xtensa-esp32-elf-gcc.exe", + "compileCommands": "${workspaceFolder}/build/compile_commands.json", + "includePath": [ + "${config:idf.espIdfPath}/components/**", + "${config:idf.espIdfPathWin}/components/**", + "${config:idf.espAdfPath}/components/**", + "${config:idf.espAdfPathWin}/components/**", + "${workspaceFolder}/**" + ], + "browse": { + "path": [ + "${config:idf.espIdfPath}/components", + "${config:idf.espIdfPathWin}/components", + "${config:idf.espAdfPath}/components/**", + "${config:idf.espAdfPathWin}/components/**", + "${workspaceFolder}" + ], + "limitSymbolsToIncludedHeaders": false + } + } + ], + "version": 4 +} diff --git a/main/puzzle/neo/esp-neopuzzle/.vscode/launch.json b/main/puzzle/neo/esp-neopuzzle/.vscode/launch.json new file mode 100644 index 0000000..6d2236f --- /dev/null +++ b/main/puzzle/neo/esp-neopuzzle/.vscode/launch.json @@ -0,0 +1,10 @@ +{ + "version": "0.2.0", + "configurations": [ + { + "type": "espidf", + "name": "Launch", + "request": "launch" + } + ] +}
\ No newline at end of file diff --git a/main/puzzle/neo/esp-neopuzzle/.vscode/settings.json b/main/puzzle/neo/esp-neopuzzle/.vscode/settings.json new file mode 100644 index 0000000..49f00b0 --- /dev/null +++ b/main/puzzle/neo/esp-neopuzzle/.vscode/settings.json @@ -0,0 +1,17 @@ +{ + "C_Cpp.intelliSenseEngine": "default", + "idf.adapterTargetName": "esp32", + "idf.customExtraPaths": "C:\\Users\\Elwin\\.espressif\\tools\\xtensa-esp-elf-gdb\\12.1_20231023\\xtensa-esp-elf-gdb\\bin;C:\\Users\\Elwin\\.espressif\\tools\\riscv32-esp-elf-gdb\\12.1_20231023\\riscv32-esp-elf-gdb\\bin;C:\\Users\\Elwin\\.espressif\\tools\\xtensa-esp-elf\\esp-13.2.0_20230928\\xtensa-esp-elf\\bin;C:\\Users\\Elwin\\.espressif\\tools\\riscv32-esp-elf\\esp-13.2.0_20230928\\riscv32-esp-elf\\bin;C:\\Users\\Elwin\\.espressif\\tools\\esp32ulp-elf\\2.35_20220830\\esp32ulp-elf\\bin;C:\\Users\\Elwin\\.espressif\\tools\\cmake\\3.24.0\\bin;C:\\Users\\Elwin\\.espressif\\tools\\openocd-esp32\\v0.12.0-esp32-20230921\\openocd-esp32\\bin;C:\\Users\\Elwin\\.espressif\\tools\\ninja\\1.11.1;C:\\Users\\Elwin\\.espressif\\tools\\idf-exe\\1.0.3;C:\\Users\\Elwin\\.espressif\\tools\\ccache\\4.8\\ccache-4.8-windows-x86_64;C:\\Users\\Elwin\\.espressif\\tools\\dfu-util\\0.11\\dfu-util-0.11-win64;C:\\Users\\Elwin\\.espressif\\tools\\esp-rom-elfs\\20230320", + "idf.customExtraVars": { + "OPENOCD_SCRIPTS": "C:\\Users\\Elwin\\.espressif\\tools\\openocd-esp32\\v0.12.0-esp32-20230921/openocd-esp32/share/openocd/scripts", + "IDF_CCACHE_ENABLE": "1", + "ESP_ROM_ELF_DIR": "C:\\Users\\Elwin\\.espressif\\tools\\esp-rom-elfs\\20230320/" + }, + "idf.espIdfPathWin": "C:\\Users\\Elwin\\esp\\v5.2.1\\esp-idf", + "idf.openOcdConfigs": [ + "interface/ftdi/esp32_devkitj_v1.cfg", + "target/esp32.cfg" + ], + "idf.pythonBinPathWin": "C:\\Users\\Elwin\\.espressif\\python_env\\idf5.2_py3.11_env\\Scripts\\python.exe", + "idf.toolsPathWin": "C:\\Users\\Elwin\\.espressif" +} diff --git a/main/puzzle/neo/esp-neopuzzle/.vscode/tasks.json b/main/puzzle/neo/esp-neopuzzle/.vscode/tasks.json new file mode 100644 index 0000000..1dc7915 --- /dev/null +++ b/main/puzzle/neo/esp-neopuzzle/.vscode/tasks.json @@ -0,0 +1,259 @@ +{ + "version": "2.0.0", + "tasks": [ + { + "label": "Build - Build project", + "type": "shell", + "command": "${config:idf.pythonBinPath} ${config:idf.espIdfPath}/tools/idf.py build", + "windows": { + "command": "${config:idf.pythonBinPathWin} ${config:idf.espIdfPathWin}\\tools\\idf.py build", + "options": { + "env": { + "PATH": "${env:PATH};${config:idf.customExtraPaths}" + } + } + }, + "options": { + "env": { + "PATH": "${env:PATH}:${config:idf.customExtraPaths}" + } + }, + "problemMatcher": [ + { + "owner": "cpp", + "fileLocation": [ + "autoDetect", + "${workspaceFolder}" + ], + "pattern": { + "regexp": "^(.*?):(\\d+):(\\d*):?\\s+(?:fatal\\s+)?(warning|error):\\s+(.*)$", + "file": 1, + "line": 2, + "column": 3, + "severity": 4, + "message": 5 + } + } + ], + "group": { + "kind": "build", + "isDefault": true + } + }, + { + "label": "Set ESP-IDF Target", + "type": "shell", + "command": "${command:espIdf.setTarget}", + "problemMatcher": { + "owner": "cpp", + "fileLocation": [ + "autoDetect", + "${workspaceFolder}" + ], + "pattern": { + "regexp": "^(.*?):(\\d+):(\\d*):?\\s+(?:fatal\\s+)?(warning|error):\\s+(.*)$", + "file": 1, + "line": 2, + "column": 3, + "severity": 4, + "message": 5 + } + } + }, + { + "label": "Clean - Clean the project", + "type": "shell", + "command": "${config:idf.pythonBinPath} ${config:idf.espIdfPath}/tools/idf.py fullclean", + "windows": { + "command": "${config:idf.pythonBinPathWin} ${config:idf.espIdfPathWin}\\tools\\idf.py fullclean", + "options": { + "env": { + "PATH": "${env:PATH};${config:idf.customExtraPaths}" + } + } + }, + "options": { + "env": { + "PATH": "${env:PATH}:${config:idf.customExtraPaths}" + } + }, + "problemMatcher": [ + { + "owner": "cpp", + "fileLocation": [ + "autoDetect", + "${workspaceFolder}" + ], + "pattern": { + "regexp": "^(.*?):(\\d+):(\\d*):?\\s+(?:fatal\\s+)?(warning|error):\\s+(.*)$", + "file": 1, + "line": 2, + "column": 3, + "severity": 4, + "message": 5 + } + } + ] + }, + { + "label": "Flash - Flash the device", + "type": "shell", + "command": "${config:idf.pythonBinPath} ${config:idf.espIdfPath}/tools/idf.py -p ${config:idf.port} -b ${config:idf.flashBaudRate} flash", + "windows": { + "command": "${config:idf.pythonBinPathWin} ${config:idf.espIdfPathWin}\\tools\\idf.py flash -p ${config:idf.portWin} -b ${config:idf.flashBaudRate}", + "options": { + "env": { + "PATH": "${env:PATH};${config:idf.customExtraPaths}" + } + } + }, + "options": { + "env": { + "PATH": "${env:PATH}:${config:idf.customExtraPaths}" + } + }, + "problemMatcher": [ + { + "owner": "cpp", + "fileLocation": [ + "autoDetect", + "${workspaceFolder}" + ], + "pattern": { + "regexp": "^(.*?):(\\d+):(\\d*):?\\s+(?:fatal\\s+)?(warning|error):\\s+(.*)$", + "file": 1, + "line": 2, + "column": 3, + "severity": 4, + "message": 5 + } + } + ] + }, + { + "label": "Monitor: Start the monitor", + "type": "shell", + "command": "${config:idf.pythonBinPath} ${config:idf.espIdfPath}/tools/idf.py -p ${config:idf.port} monitor", + "windows": { + "command": "${config:idf.pythonBinPathWin} ${config:idf.espIdfPathWin}\\tools\\idf.py -p ${config:idf.portWin} monitor", + "options": { + "env": { + "PATH": "${env:PATH};${config:idf.customExtraPaths}" + } + } + }, + "options": { + "env": { + "PATH": "${env:PATH}:${config:idf.customExtraPaths}" + } + }, + "problemMatcher": [ + { + "owner": "cpp", + "fileLocation": [ + "autoDetect", + "${workspaceFolder}" + ], + "pattern": { + "regexp": "^(.*?):(\\d+):(\\d*):?\\s+(?:fatal\\s+)?(warning|error):\\s+(.*)$", + "file": 1, + "line": 2, + "column": 3, + "severity": 4, + "message": 5 + } + } + ], + "dependsOn": "Flash - Flash the device" + }, + { + "label": "OpenOCD: Start openOCD", + "type": "shell", + "presentation": { + "echo": true, + "reveal": "never", + "focus": false, + "panel": "new" + }, + "command": "openocd -s ${command:espIdf.getOpenOcdScriptValue} ${command:espIdf.getOpenOcdConfigs}", + "windows": { + "command": "openocd.exe -s ${command:espIdf.getOpenOcdScriptValue} ${command:espIdf.getOpenOcdConfigs}", + "options": { + "env": { + "PATH": "${env:PATH};${config:idf.customExtraPaths}" + } + } + }, + "options": { + "env": { + "PATH": "${env:PATH}:${config:idf.customExtraPaths}" + } + }, + "problemMatcher": { + "owner": "cpp", + "fileLocation": [ + "autoDetect", + "${workspaceFolder}" + ], + "pattern": { + "regexp": "^(.*?):(\\d+):(\\d*):?\\s+(?:fatal\\s+)?(warning|error):\\s+(.*)$", + "file": 1, + "line": 2, + "column": 3, + "severity": 4, + "message": 5 + } + } + }, + { + "label": "adapter", + "type": "shell", + "command": "${config:idf.pythonBinPath}", + "isBackground": true, + "options": { + "env": { + "PATH": "${env:PATH}:${config:idf.customExtraPaths}", + "PYTHONPATH": "${command:espIdf.getExtensionPath}/esp_debug_adapter/debug_adapter" + } + }, + "problemMatcher": { + "background": { + "beginsPattern": "\bDEBUG_ADAPTER_STARTED\b", + "endsPattern": "DEBUG_ADAPTER_READY2CONNECT", + "activeOnStart": true + }, + "pattern": { + "regexp": "(\\d+)-(\\d+)-(\\d+)\\s(\\d+):(\\d+):(\\d+),(\\d+)\\s-(.+)\\s(ERROR)", + "file": 8, + "line": 2, + "column": 3, + "severity": 4, + "message": 9 + } + }, + "args": [ + "${command:espIdf.getExtensionPath}/esp_debug_adapter/debug_adapter_main.py", + "-e", + "${workspaceFolder}/build/${command:espIdf.getProjectName}.elf", + "-s", + "$OPENOCD_SCRIPTS", + "-dn", + "esp32", + "-om", + "connect_to_instance", + "-t", + "xtensa-esp32-elf-" + + ], + "windows": { + "command": "${config:idf.pythonBinPathWin}", + "options": { + "env": { + "PATH": "${env:PATH};${config:idf.customExtraPaths}", + "PYTHONPATH": "${command:espIdf.getExtensionPath}/esp_debug_adapter/debug_adapter" + } + } + } + } + ] +}
\ No newline at end of file diff --git a/main/puzzle/neo/esp-neopuzzle/CMakeLists.txt b/main/puzzle/neo/esp-neopuzzle/CMakeLists.txt new file mode 100644 index 0000000..fb90ef1 --- /dev/null +++ b/main/puzzle/neo/esp-neopuzzle/CMakeLists.txt @@ -0,0 +1,8 @@ +# For more information about build system see +# https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html +# The following five lines of boilerplate have to be in your project's +# CMakeLists in this exact order for cmake to work correctly +cmake_minimum_required(VERSION 3.16) + +include($ENV{IDF_PATH}/tools/cmake/project.cmake) +project(esp-neopuzzle) diff --git a/main/puzzle/neo/esp-neopuzzle/README.md b/main/puzzle/neo/esp-neopuzzle/README.md new file mode 100644 index 0000000..2bd3097 --- /dev/null +++ b/main/puzzle/neo/esp-neopuzzle/README.md @@ -0,0 +1,35 @@ +| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C6 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 | +| ----------------- | ----- | -------- | -------- | -------- | -------- | -------- | -------- | -------- | + +# _Sample project_ + +(See the README.md file in the upper level 'examples' directory for more information about examples.) + +This is the simplest buildable example. The example is used by command `idf.py create-project` +that copies the project to user specified path and set it's name. For more information follow the [docs page](https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html#start-a-new-project) + + + +## How to use example +We encourage the users to use the example as a template for the new projects. +A recommended way is to follow the instructions on a [docs page](https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html#start-a-new-project). + +## Example folder contents + +The project **sample_project** contains one source file in C language [main.c](main/main.c). The file is located in folder [main](main). + +ESP-IDF projects are built using CMake. The project build configuration is contained in `CMakeLists.txt` +files that provide set of directives and instructions describing the project's source files and targets +(executable, library, or both). + +Below is short explanation of remaining files in the project folder. + +``` +├── CMakeLists.txt +├── main +│ ├── CMakeLists.txt +│ └── main.c +└── README.md This is the file you are currently reading +``` +Additionally, the sample project contains Makefile and component.mk files, used for the legacy Make based build system. +They are not used or needed when building with CMake and idf.py. diff --git a/main/puzzle/neo/esp-neopuzzle/main/CMakeLists.txt b/main/puzzle/neo/esp-neopuzzle/main/CMakeLists.txt new file mode 100644 index 0000000..cf2c455 --- /dev/null +++ b/main/puzzle/neo/esp-neopuzzle/main/CMakeLists.txt @@ -0,0 +1,2 @@ +idf_component_register(SRCS "main.c" + INCLUDE_DIRS ".") diff --git a/main/puzzle/neo/esp-neopuzzle/main/main.c b/main/puzzle/neo/esp-neopuzzle/main/main.c new file mode 100644 index 0000000..0210748 --- /dev/null +++ b/main/puzzle/neo/esp-neopuzzle/main/main.c @@ -0,0 +1,85 @@ +#include <stdio.h> +#include <Wire.h> +#include "Adafruit_NeoTrellis.h" + +#define MATRIX_SIZE 8 +#define INT_PIN 5 // Interrupt pin for the NeoTrellis + +enum NeoState { + NEO_UNINITIALIZED, + NEO_PLAYING, + NEO_SOLVED +}; + +Adafruit_NeoTrellis trellis; +NeoState neoState = NEO_UNINITIALIZED; + +// Initialize the NeoTrellis matrix +void initializeNeoMatrix() { + if (!trellis.begin()) { + Serial.println("Failed to initialize NeoTrellis"); + while (1); + } + + // Set all buttons to listen for presses and releases + for (int i = 0; i < MATRIX_SIZE; i++) { + for (int j = 0; j < MATRIX_SIZE; j++) { + trellis.activateKey(i * MATRIX_SIZE + j, SEESAW_KEYPAD_EDGE_RISING, true); + trellis.activateKey(i * MATRIX_SIZE + j, SEESAW_KEYPAD_EDGE_FALLING, true); + trellis.setPixelColor(i * MATRIX_SIZE + j, 0x000000); // Turn off LED + } + } + trellis.show(); + neoState = NEO_PLAYING; +} + +// Callback to handle button presses +void buttonCallback(uint8_t x) { + uint8_t i = x / MATRIX_SIZE; + uint8_t j = x % MATRIX_SIZE; + + // Toggle the central button and adjacent LEDs + toggleAdjacentLEDs(i, j); + if (isNeoPuzzleSolved()) { + neoState = NEO_SOLVED; + Serial.println("The NeoTrellis puzzle is solved!"); + // Additional actions upon solving the puzzle can go here + } + trellis.show(); +} + +void toggleAdjacentLEDs(int x, int y) { + int idx = x * MATRIX_SIZE + y; + trellis.setPixelColor(idx, trellis.getPixelColor(idx) ^ 0xFFFFFF); // Toggle + + // Adjacent LEDs + if (x > 0) trellis.setPixelColor((x-1) * MATRIX_SIZE + y, trellis.getPixelColor((x-1) * MATRIX_SIZE + y) ^ 0xFFFFFF); + if (x < MATRIX_SIZE - 1) trellis.setPixelColor((x+1) * MATRIX_SIZE + y, trellis.getPixelColor((x+1) * MATRIX_SIZE + y) ^ 0xFFFFFF); + if (y > 0) trellis.setPixelColor(x * MATRIX_SIZE + (y-1), trellis.getPixelColor(x * MATRIX_SIZE + (y-1)) ^ 0xFFFFFF); + if (y < MATRIX_SIZE - 1) trellis.setPixelColor(x * MATRIX_SIZE + (y+1), trellis.getPixelColor(x * MATRIX_SIZE + (y+1)) ^ 0xFFFFFF); +} + +bool isNeoPuzzleSolved() { + for (int i = 0; i < MATRIX_SIZE; i++) { + for (int j = 0; j < MATRIX_SIZE; j++) { + if (trellis.getPixelColor(i * MATRIX_SIZE + j) != 0x000000) return false; // If any LED is on, puzzle is not solved + } + } + return true; +} + +void setup() { + Serial.begin(115200); + trellis.begin(INT_PIN); + trellis.setBrightness(50); // Set brightness of LEDs (0-255) + initializeNeoMatrix(); + trellis.registerCallback(buttonCallback); +} + +void loop() { + if (neoState == NEO_PLAYING) { + if (trellis.read()) { // If there was a button event + trellis.show(); // Update the display + } + } +} |