commit aa241feec87b91e184801abb9338883eecfe4197
Author: iaphetes <iaphetes@mailfence.com>
Date:   Thu Aug 21 15:34:01 2025 +0200

    Initial init

diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 0000000..2206af2
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,9 @@
+[target.'cfg(all(target_arch = "arm", target_os = "none"))']
+runner = "probe-rs run --chip RP2040"
+# runner = "elf2uf2-rs -d"
+
+[build]
+target = "thumbv6m-none-eabi" # Cortex-M0 and Cortex-M0+
+
+[env]
+DEFMT_LOG = "debug"
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..bf33203
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,10 @@
+target
+
+*.bin
+*.elf
+*.hex
+*.uf2
+
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diff --git a/.ignore b/.ignore
new file mode 100644
index 0000000..b83d222
--- /dev/null
+++ b/.ignore
@@ -0,0 +1 @@
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diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..82bb5e0
--- /dev/null
+++ b/Cargo.lock
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..4b615f0
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,67 @@
+[package]
+name = "corne"
+version = "0.2.0"
+authors = ["Haobo Gu <haobogu@outlook.com>"]
+description = "Keyboard firmware written in Rust"
+homepage = "https://github.com/haobogu/rmk"
+repository = "https://github.com/haobogu/rmk"
+readme = "../../README.md"
+edition = "2021"
+license = "MIT OR Apache-2.0"
+
+[dependencies]
+rmk = { version = "0.6", features = ["split", "rp2040_bl", "rp2040_pio"] }
+embassy-time = { version = "0.4", features = ["defmt"] }
+embassy-rp = { version = "0.4", features = [
+    "rp2040",
+    "defmt",
+    "time-driver",
+    "critical-section-impl",
+] }
+embassy-executor = { version = "0.7", features = [
+    "defmt",
+    "arch-cortex-m",
+    "executor-thread",
+    "task-arena-size-32768",
+] }
+embassy-futures = { version = "0.1", features = ["defmt"] }
+cortex-m-rt = "0.7.3"
+portable-atomic = { version = "1.5", features = ["critical-section"] }
+defmt = "0.3"
+defmt-rtt = "0.4"
+panic-probe = { version = "0.3", features = ["print-defmt"] }
+static_cell = "2"
+
+# [features]
+# avoid having to use --allow-multiple-definition linker flag
+# on macOS with Apple Silicon at least
+# default = ["rp-pico/disable-intrinsics"]
+
+[build-dependencies]
+xz2 = "0.1.7"
+json = "0.12"
+const-gen = "1.6"
+
+# Split keyboard example
+[[bin]]
+name = "central"
+path = "src/central.rs"
+
+[[bin]]
+name = "peripheral"
+path = "src/peripheral.rs"
+
+[profile.dev]
+codegen-units = 1      # better optimizations
+debug = true
+opt-level = 1
+overflow-checks = true
+lto = false
+panic = 'unwind'
+
+[profile.release]
+codegen-units = 1       # better optimizations
+debug = true            # no overhead for bare-metal
+opt-level = "z"         # optimize for binary size
+overflow-checks = false
+lto = "fat"
diff --git a/Makefile.toml b/Makefile.toml
new file mode 100644
index 0000000..efa3482
--- /dev/null
+++ b/Makefile.toml
@@ -0,0 +1,76 @@
+[tasks.install-llvm-tools]
+install_crate = { rustup_component_name = "llvm-tools" }
+
+[tasks.flip-link]
+install_crate = { crate_name = "flip-link", binary = "flip-link", test_arg = [
+    "-h",
+] }
+
+[tasks.objcopy-central]
+install_crate = { crate_name = "cargo-binutils", binary = "cargo", test_arg = [
+    "objcopy",
+    "--help",
+] }
+command = "cargo"
+args = [
+    "objcopy",
+    "--release",
+    "--bin",
+    "central",
+    "--",
+    "-O",
+    "ihex",
+    "corne-central.hex",
+]
+dependencies = ["install-llvm-tools", "flip-link"]
+
+[tasks.objcopy-peripheral]
+command = "cargo"
+args = [
+    "objcopy",
+    "--release",
+    "--bin",
+    "peripheral",
+    "--",
+    "-O",
+    "ihex",
+    "corne-peripheral.hex",
+]
+dependencies = ["install-llvm-tools", "flip-link"]
+
+[tasks.uf2-central]
+install_crate = { crate_name = "cargo-hex-to-uf2", binary = "cargo", test_arg = [
+    "hex-to-uf2",
+    "--help",
+] }
+command = "cargo"
+args = [
+    "hex-to-uf2",
+    "--input-path",
+    "corne-central.hex",
+    "--output-path",
+    "corne-central.uf2",
+    "--family",
+    "rp2040",
+]
+dependencies = ["objcopy-central"]
+
+[tasks.uf2-peripheral]
+install_crate = { crate_name = "cargo-hex-to-uf2", binary = "cargo", test_arg = [
+    "hex-to-uf2",
+    "--help",
+] }
+command = "cargo"
+args = [
+    "hex-to-uf2",
+    "--input-path",
+    "corne-peripheral.hex",
+    "--output-path",
+    "corne-peripheral.uf2",
+    "--family",
+    "rp2040",
+]
+dependencies = ["objcopy-peripheral"]
+
+[tasks.uf2]
+dependencies = ["uf2-central", "uf2-peripheral"]
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..b44945f
--- /dev/null
+++ b/README.md
@@ -0,0 +1,53 @@
+# RMK 
+
+RMK is a feature-rich and easy-to-use keyboard firmware.
+
+## Use the template
+
+1. Install [probe-rs](https://github.com/probe-rs/probe-rs)
+
+   ```shell
+   # Linux/macOS
+   curl --proto '=https' --tlsv1.2 -LsSf https://github.com/probe-rs/probe-rs/releases/latest/download/probe-rs-tools-installer.sh | sh
+
+   # Windows
+   irm https://github.com/probe-rs/probe-rs/releases/latest/download/probe-rs-tools-installer.ps1 | iex
+   ```
+
+2. Build the firmware
+
+   ```shell
+   cargo build --release
+   ```
+
+3. Flash using debug probe
+
+   If you have a debug probe connected to your rp2040 board, flashing is quite simple: run the following command to automatically compile and flash RMK firmware to the board:
+
+   ```shell
+   cargo run --release
+   ```
+
+4. (Optional) Flash using USB
+
+   If you don't have a debug probe, you can use `elf2uf2-rs` to flash your rp2040 firmware via USB. There are several additional steps you have to do:
+
+   1. Install `elf2uf2-rs`: `cargo install elf2uf2-rs`
+   2. Update `.cargo/config.toml`, use `elf2uf2` as the flashing tool
+      ```diff
+      - runner = "probe-rs run --chip RP2040"
+      + runner = "elf2uf2-rs -d"
+      ```
+   3. Connect your rp2040 board holding the BOOTSEL key, ensure that rp's USB drive appears
+   4. Flash
+      ```shell
+      cargo run --release
+      ```
+      Then, you will see logs like if everything goes right:
+      ```shell
+      Finished release [optimized + debuginfo] target(s) in 0.21s
+      Running `elf2uf2-rs -d 'target\thumbv6m-none-eabi\release\rmk-rp2040'`
+      Found pico uf2 disk G:\
+      Transfering program to pico
+      173.00 KB / 173.00 KB [=======================] 100.00 % 193.64 KB/s  
+      ```
\ No newline at end of file
diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..e413a63
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,86 @@
+//! This build script copies the `memory.x` file from the crate root into
+//! a directory where the linker can always find it at build time.
+//! For many projects this is optional, as the linker always searches the
+//! project root directory -- wherever `Cargo.toml` is. However, if you
+//! are using a workspace or have a more complicated build setup, this
+//! build script becomes required. Additionally, by requesting that
+//! Cargo re-run the build script whenever `memory.x` is changed,
+//! updating `memory.x` ensures a rebuild of the application with the
+//! new memory settings.
+//!
+//! The build script also sets the linker flags to tell it which link script to use.
+
+use const_gen::*;
+use std::fs::File;
+use std::io::{Read, Write};
+use std::path::{Path, PathBuf};
+use std::{env, fs};
+use xz2::read::XzEncoder;
+
+fn main() {
+    // Generate vial config at the root of project
+    println!("cargo:rerun-if-changed=vial.json");
+    println!("cargo:rerun-if-changed=keyboard.toml");
+
+    generate_vial_config();
+
+    // Put `memory.x` in our output directory and ensure it's
+    // on the linker search path.
+    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
+    File::create(out.join("memory.x"))
+        .unwrap()
+        .write_all(include_bytes!("memory.x"))
+        .unwrap();
+    println!("cargo:rustc-link-search={}", out.display());
+
+    // By default, Cargo will re-run a build script whenever
+    // any file in the project changes. By specifying `memory.x`
+    // here, we ensure the build script is only re-run when
+    // `memory.x` is changed.
+    println!("cargo:rerun-if-changed=memory.x");
+
+    // Specify linker arguments.
+
+    // `--nmagic` is required if memory section addresses are not aligned to 0x10000,
+    // for example the FLASH and RAM sections in your `memory.x`.
+    // See https://github.com/rust-embedded/cortex-m-quickstart/pull/95
+    println!("cargo:rustc-link-arg=--nmagic");
+
+    // Set the linker script to the one provided by cortex-m-rt.
+    println!("cargo:rustc-link-arg=-Tlink.x");
+
+    // Set the linker script of the defmt
+    println!("cargo:rustc-link-arg=-Tdefmt.x");
+
+    println!("cargo:rustc-linker=flip-link");
+}
+
+fn generate_vial_config() {
+    // Generated vial config file
+    let out_file = Path::new(&env::var_os("OUT_DIR").unwrap()).join("config_generated.rs");
+
+    let p = Path::new("vial.json");
+    let mut content = String::new();
+    match File::open(p) {
+        Ok(mut file) => {
+            file.read_to_string(&mut content)
+                .expect("Cannot read vial.json");
+        }
+        Err(e) => println!("Cannot find vial.json {:?}: {}", p, e),
+    };
+
+    let vial_cfg = json::stringify(json::parse(&content).unwrap());
+    let mut keyboard_def_compressed: Vec<u8> = Vec::new();
+    XzEncoder::new(vial_cfg.as_bytes(), 6)
+        .read_to_end(&mut keyboard_def_compressed)
+        .unwrap();
+
+    let keyboard_id: Vec<u8> = vec![0xB9, 0xBC, 0x09, 0xB2, 0x9D, 0x37, 0x4C, 0xEA];
+    let const_declarations = [
+        const_declaration!(pub VIAL_KEYBOARD_DEF = keyboard_def_compressed),
+        const_declaration!(pub VIAL_KEYBOARD_ID = keyboard_id),
+    ]
+    .map(|s| "#[allow(clippy::redundant_static_lifetimes)]\n".to_owned() + s.as_str())
+    .join("\n");
+    fs::write(out_file, const_declarations).unwrap();
+}
diff --git a/keyboard.toml b/keyboard.toml
new file mode 100644
index 0000000..fc3516e
--- /dev/null
+++ b/keyboard.toml
@@ -0,0 +1,62 @@
+[keyboard]
+name = "corne"
+product_name = "corne"
+vendor_id = 0x4c4b
+product_id = 0x4643
+manufacturer = "haobo"
+chip = "rp2040"
+
+# [matrix]
+# Input and output pins are mandatory
+# input_pins = ["PIN_6", "PIN_7", "PIN_8", "PIN_9"]
+# output_pins = ["PIN_19", "PIN_20", "PIN_21"]
+# WARNING: Currently row2col/col2row is set in RMK's feature gate, configs here do nothing actually
+# row2col = true
+
+[layout]
+rows = 4
+cols = 12
+layers = 6
+keymap = [
+    [
+        ["_", "Q", "W", "E", "R", "T",     "Y", "U", "I", "O", "P", "_"],
+        ["B", "A", "S", "D", "F", "G",     "H", "J", "K", "L", "Semicolon", "_"],
+        ["_", "Z", "X", "C", "V", "B",     "N", "M", "M", "_", "Slash", "_"],
+        ["_", "Kc0", "Kc1", "Kc2", "Kc3", "Kc4",     "Kc5", "Kc6", "Kc7", "Kc8", "Kc9", "_"],
+     ],
+     [
+        ["_", "Q", "W", "E", "R", "T",     "Y", "U", "I", "O", "P", "_"],
+        ["_", "A", "S", "D", "F", "G",     "H", "J", "K", "L", "Semicolon", "_"],
+        ["_", "Z", "X", "C", "V", "B",     "N", "M", "_", "_", "Slash", "_"],
+        ["_", "_", "_", "_", "_", "_",     "_", "_", "_", "_", "_", "_"],
+     ],
+]
+
+
+[storage]
+enabled = true
+
+[split]
+connection = "serial"
+
+[split.central]
+rows = 4
+cols = 6
+row_offset = 0
+col_offset = 0
+serial = [{ instance = "PIO0", tx_pin = "PIN_1", rx_pin = "PIN_1" }]
+[split.central.matrix]
+matrix_type = "normal"
+input_pins = ["PIN_4", "PIN_5", "PIN_6", "PIN_7"]
+output_pins = ["PIN_29", "PIN_28", "PIN_27", "PIN_26", "PIN_18", "PIN_20"]
+
+[[split.peripheral]]
+rows = 4
+cols = 6
+row_offset = 0
+col_offset = 6
+serial = [{ instance = "PIO0", tx_pin = "PIN_1", rx_pin = "PIN_1" }]
+[split.peripheral.matrix]
+matrix_type = "normal"
+input_pins = ["PIN_4", "PIN_5", "PIN_6", "PIN_7"]
+output_pins = ["PIN_20", "PIN_18", "PIN_26", "PIN_27", "PIN_28", "PIN_29"]
diff --git a/memory.x b/memory.x
new file mode 100644
index 0000000..070eac7
--- /dev/null
+++ b/memory.x
@@ -0,0 +1,15 @@
+MEMORY {
+    BOOT2 : ORIGIN = 0x10000000, LENGTH = 0x100
+    FLASH : ORIGIN = 0x10000100, LENGTH = 2048K - 0x100
+    RAM   : ORIGIN = 0x20000000, LENGTH = 256K
+}
+
+EXTERN(BOOT2_FIRMWARE)
+
+SECTIONS {
+    /* ### Boot loader */
+    .boot2 ORIGIN(BOOT2) :
+    {
+        KEEP(*(.boot2));
+    } > BOOT2
+} INSERT BEFORE .text;
\ No newline at end of file
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..08f53af
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,6 @@
+[toolchain]
+channel = "stable"
+components = ["rust-src", "rustfmt", "llvm-tools"]
+targets = [
+    "thumbv6m-none-eabi",
+]
diff --git a/scripts/uf2conv.py b/scripts/uf2conv.py
new file mode 100644
index 0000000..aaa65c4
--- /dev/null
+++ b/scripts/uf2conv.py
@@ -0,0 +1,704 @@
+#!/usr/bin/env python3
+
+import sys
+import struct
+import subprocess
+import re
+import os
+import os.path
+import argparse
+import json
+from time import sleep
+
+chip_families = [
+    {
+        "id": "0x16573617",
+        "short_name": "ATMEGA32",
+        "description": "Microchip (Atmel) ATmega32"
+    },
+    {
+        "id": "0x1851780a",
+        "short_name": "SAML21",
+        "description": "Microchip (Atmel) SAML21"
+    },
+    {
+        "id": "0x1b57745f",
+        "short_name": "NRF52",
+        "description": "Nordic NRF52"
+    },
+    {
+        "id": "0x1c5f21b0",
+        "short_name": "ESP32",
+        "description": "ESP32"
+    },
+    {
+        "id": "0x1e1f432d",
+        "short_name": "STM32L1",
+        "description": "ST STM32L1xx"
+    },
+    {
+        "id": "0x202e3a91",
+        "short_name": "STM32L0",
+        "description": "ST STM32L0xx"
+    },
+    {
+        "id": "0x21460ff0",
+        "short_name": "STM32WL",
+        "description": "ST STM32WLxx"
+    },
+    {
+        "id": "0x22e0d6fc",
+        "short_name": "RTL8710B",
+        "description": "Realtek AmebaZ RTL8710B"
+    },
+    {
+        "id": "0x2abc77ec",
+        "short_name": "LPC55",
+        "description": "NXP LPC55xx"
+    },
+    {
+        "id": "0x300f5633",
+        "short_name": "STM32G0",
+        "description": "ST STM32G0xx"
+    },
+    {
+        "id": "0x31d228c6",
+        "short_name": "GD32F350",
+        "description": "GD32F350"
+    },
+    {
+        "id": "0x3379CFE2",
+        "short_name": "RTL8720D",
+        "description": "Realtek AmebaD RTL8720D"
+    },
+    {
+        "id": "0x04240bdf",
+        "short_name": "STM32L5",
+        "description": "ST STM32L5xx"
+    },
+    {
+        "id": "0x4c71240a",
+        "short_name": "STM32G4",
+        "description": "ST STM32G4xx"
+    },
+    {
+        "id": "0x4fb2d5bd",
+        "short_name": "MIMXRT10XX",
+        "description": "NXP i.MX RT10XX"
+    },
+    {
+        "id": "0x51e903a8",
+        "short_name": "XR809",
+        "description": "Xradiotech 809"
+    },
+    {
+        "id": "0x53b80f00",
+        "short_name": "STM32F7",
+        "description": "ST STM32F7xx"
+    },
+    {
+        "id": "0x55114460",
+        "short_name": "SAMD51",
+        "description": "Microchip (Atmel) SAMD51"
+    },
+    {
+        "id": "0x57755a57",
+        "short_name": "STM32F4",
+        "description": "ST STM32F4xx"
+    },
+    {
+        "id": "0x5a18069b",
+        "short_name": "FX2",
+        "description": "Cypress FX2"
+    },
+    {
+        "id": "0x5d1a0a2e",
+        "short_name": "STM32F2",
+        "description": "ST STM32F2xx"
+    },
+    {
+        "id": "0x5ee21072",
+        "short_name": "STM32F1",
+        "description": "ST STM32F103"
+    },
+    {
+        "id": "0x621e937a",
+        "short_name": "NRF52833",
+        "description": "Nordic NRF52833"
+    },
+    {
+        "id": "0x647824b6",
+        "short_name": "STM32F0",
+        "description": "ST STM32F0xx"
+    },
+    {
+        "id": "0x675a40b0",
+        "short_name": "BK7231U",
+        "description": "Beken 7231U/7231T"
+    },
+    {
+        "id": "0x68ed2b88",
+        "short_name": "SAMD21",
+        "description": "Microchip (Atmel) SAMD21"
+    },
+    {
+        "id": "0x6a82cc42",
+        "short_name": "BK7251",
+        "description": "Beken 7251/7252"
+    },
+    {
+        "id": "0x6b846188",
+        "short_name": "STM32F3",
+        "description": "ST STM32F3xx"
+    },
+    {
+        "id": "0x6d0922fa",
+        "short_name": "STM32F407",
+        "description": "ST STM32F407"
+    },
+    {
+        "id": "0x6db66082",
+        "short_name": "STM32H7",
+        "description": "ST STM32H7xx"
+    },
+    {
+        "id": "0x70d16653",
+        "short_name": "STM32WB",
+        "description": "ST STM32WBxx"
+    },
+    {
+        "id": "0x7b3ef230",
+        "short_name": "BK7231N",
+        "description": "Beken 7231N"
+    },
+    {
+        "id": "0x7eab61ed",
+        "short_name": "ESP8266",
+        "description": "ESP8266"
+    },
+    {
+        "id": "0x7f83e793",
+        "short_name": "KL32L2",
+        "description": "NXP KL32L2x"
+    },
+    {
+        "id": "0x8fb060fe",
+        "short_name": "STM32F407VG",
+        "description": "ST STM32F407VG"
+    },
+    {
+        "id": "0x9fffd543",
+        "short_name": "RTL8710A",
+        "description": "Realtek Ameba1 RTL8710A"
+    },
+    {
+        "id": "0xada52840",
+        "short_name": "NRF52840",
+        "description": "Nordic NRF52840"
+    },
+    {
+        "id": "0xbfdd4eee",
+        "short_name": "ESP32S2",
+        "description": "ESP32-S2"
+    },
+    {
+        "id": "0xc47e5767",
+        "short_name": "ESP32S3",
+        "description": "ESP32-S3"
+    },
+    {
+        "id": "0xd42ba06c",
+        "short_name": "ESP32C3",
+        "description": "ESP32-C3"
+    },
+    {
+        "id": "0x2b88d29c",
+        "short_name": "ESP32C2",
+        "description": "ESP32-C2"
+    },
+    {
+        "id": "0x332726f6",
+        "short_name": "ESP32H2",
+        "description": "ESP32-H2"
+    },
+    {
+        "id": "0x540ddf62",
+        "short_name": "ESP32C6",
+        "description": "ESP32-C6"
+    },
+    {
+        "id": "0x3d308e94",
+        "short_name": "ESP32P4",
+        "description": "ESP32-P4"
+    },
+    {
+        "id": "0xf71c0343",
+        "short_name": "ESP32C5",
+        "description": "ESP32-C5"
+    },
+    {
+        "id": "0x77d850c4",
+        "short_name": "ESP32C61",
+        "description": "ESP32-C61"
+    },
+    {
+        "id": "0xde1270b7",
+        "short_name": "BL602",
+        "description": "Boufallo 602"
+    },
+    {
+        "id": "0xe08f7564",
+        "short_name": "RTL8720C",
+        "description": "Realtek AmebaZ2 RTL8720C"
+    },
+    {
+        "id": "0xe48bff56",
+        "short_name": "RP2040",
+        "description": "Raspberry Pi RP2040"
+    },
+    {
+        "id": "0xe48bff57",
+        "short_name": "RP2XXX_ABSOLUTE",
+        "description": "Raspberry Pi Microcontrollers: Absolute (unpartitioned) download"
+    },
+    {
+        "id": "0xe48bff58",
+        "short_name": "RP2XXX_DATA",
+        "description": "Raspberry Pi Microcontrollers: Data partition download"
+    },
+    {
+        "id": "0xe48bff59",
+        "short_name": "RP2350_ARM_S",
+        "description": "Raspberry Pi RP2350, Secure Arm image"
+    },
+    {
+        "id": "0xe48bff5a",
+        "short_name": "RP2350_RISCV",
+        "description": "Raspberry Pi RP2350, RISC-V image"
+    },
+    {
+        "id": "0xe48bff5b",
+        "short_name": "RP2350_ARM_NS",
+        "description": "Raspberry Pi RP2350, Non-secure Arm image"
+    },
+    {
+        "id": "0x00ff6919",
+        "short_name": "STM32L4",
+        "description": "ST STM32L4xx"
+    },
+    {
+        "id": "0x9af03e33",
+        "short_name": "GD32VF103",
+        "description": "GigaDevice GD32VF103"
+    },
+    {
+        "id": "0x4f6ace52",
+        "short_name": "CSK4",
+        "description": "LISTENAI CSK300x/400x"
+    },
+    {
+        "id": "0x6e7348a8",
+        "short_name": "CSK6",
+        "description": "LISTENAI CSK60xx"
+    },
+    {
+        "id": "0x11de784a",
+        "short_name": "M0SENSE",
+        "description": "M0SENSE BL702"
+    },
+    {
+        "id": "0x4b684d71",
+        "short_name": "MaixPlay-U4",
+        "description": "Sipeed MaixPlay-U4(BL618)"
+    },
+    {
+        "id": "0x9517422f",
+        "short_name": "RZA1LU",
+        "description": "Renesas RZ/A1LU (R7S7210xx)"
+    },
+    {
+        "id": "0x2dc309c5",
+        "short_name": "STM32F411xE",
+        "description": "ST STM32F411xE"
+    },
+    {
+        "id": "0x06d1097b",
+        "short_name": "STM32F411xC",
+        "description": "ST STM32F411xC"
+    },
+    {
+        "id": "0x72721d4e",
+        "short_name": "NRF52832xxAA",
+        "description": "Nordic NRF52832xxAA"
+    },
+    {
+        "id": "0x6f752678",
+        "short_name": "NRF52832xxAB",
+        "description": "Nordic NRF52832xxAB"
+    },
+    {
+        "id": "0xa0c97b8e",
+        "short_name": "AT32F415",
+        "description": "ArteryTek AT32F415"
+    },
+    {
+        "id": "0x699b62ec",
+        "short_name": "CH32V",
+        "description": "WCH CH32V2xx and CH32V3xx"
+    },
+    {
+        "id": "0x7be8976d",
+        "short_name": "RA4M1",
+        "description": "Renesas RA4M1"
+    }
+]
+
+UF2_MAGIC_START0 = 0x0A324655 # "UF2\n"
+UF2_MAGIC_START1 = 0x9E5D5157 # Randomly selected
+UF2_MAGIC_END    = 0x0AB16F30 # Ditto
+
+INFO_FILE = "/INFO_UF2.TXT"
+
+appstartaddr = 0x2000
+familyid = 0x0
+
+
+def is_uf2(buf):
+    w = struct.unpack("<II", buf[0:8])
+    return w[0] == UF2_MAGIC_START0 and w[1] == UF2_MAGIC_START1
+
+def is_hex(buf):
+    try:
+        w = buf[0:30].decode("utf-8")
+    except UnicodeDecodeError:
+        return False
+    if w[0] == ':' and re.match(rb"^[:0-9a-fA-F\r\n]+$", buf):
+        return True
+    return False
+
+def convert_from_uf2(buf):
+    global appstartaddr
+    global familyid
+    numblocks = len(buf) // 512
+    curraddr = None
+    currfamilyid = None
+    families_found = {}
+    prev_flag = None
+    all_flags_same = True
+    outp = []
+    for blockno in range(numblocks):
+        ptr = blockno * 512
+        block = buf[ptr:ptr + 512]
+        hd = struct.unpack(b"<IIIIIIII", block[0:32])
+        if hd[0] != UF2_MAGIC_START0 or hd[1] != UF2_MAGIC_START1:
+            print("Skipping block at " + ptr + "; bad magic")
+            continue
+        if hd[2] & 1:
+            # NO-flash flag set; skip block
+            continue
+        datalen = hd[4]
+        if datalen > 476:
+            assert False, "Invalid UF2 data size at " + ptr
+        newaddr = hd[3]
+        if (hd[2] & 0x2000) and (currfamilyid == None):
+            currfamilyid = hd[7]
+        if curraddr == None or ((hd[2] & 0x2000) and hd[7] != currfamilyid):
+            currfamilyid = hd[7]
+            curraddr = newaddr
+            if familyid == 0x0 or familyid == hd[7]:
+                appstartaddr = newaddr
+        padding = newaddr - curraddr
+        if padding < 0:
+            assert False, "Block out of order at " + ptr
+        if padding > 10*1024*1024:
+            assert False, "More than 10M of padding needed at " + ptr
+        if padding % 4 != 0:
+            assert False, "Non-word padding size at " + ptr
+        while padding > 0:
+            padding -= 4
+            outp.append(b"\x00\x00\x00\x00")
+        if familyid == 0x0 or ((hd[2] & 0x2000) and familyid == hd[7]):
+            outp.append(block[32 : 32 + datalen])
+        curraddr = newaddr + datalen
+        if hd[2] & 0x2000:
+            if hd[7] in families_found.keys():
+                if families_found[hd[7]] > newaddr:
+                    families_found[hd[7]] = newaddr
+            else:
+                families_found[hd[7]] = newaddr
+        if prev_flag == None:
+            prev_flag = hd[2]
+        if prev_flag != hd[2]:
+            all_flags_same = False
+        if blockno == (numblocks - 1):
+            print("--- UF2 File Header Info ---")
+            families = load_families()
+            for family_hex in families_found.keys():
+                family_short_name = ""
+                for name, value in families.items():
+                    if value == family_hex:
+                        family_short_name = name
+                print("Family ID is {:s}, hex value is 0x{:08x}".format(family_short_name,family_hex))
+                print("Target Address is 0x{:08x}".format(families_found[family_hex]))
+            if all_flags_same:
+                print("All block flag values consistent, 0x{:04x}".format(hd[2]))
+            else:
+                print("Flags were not all the same")
+            print("----------------------------")
+            if len(families_found) > 1 and familyid == 0x0:
+                outp = []
+                appstartaddr = 0x0
+    return b"".join(outp)
+
+def convert_to_carray(file_content):
+    outp = "const unsigned long bindata_len = %d;\n" % len(file_content)
+    outp += "const unsigned char bindata[] __attribute__((aligned(16))) = {"
+    for i in range(len(file_content)):
+        if i % 16 == 0:
+            outp += "\n"
+        outp += "0x%02x, " % file_content[i]
+    outp += "\n};\n"
+    return bytes(outp, "utf-8")
+
+def convert_to_uf2(file_content):
+    global familyid
+    datapadding = b""
+    while len(datapadding) < 512 - 256 - 32 - 4:
+        datapadding += b"\x00\x00\x00\x00"
+    numblocks = (len(file_content) + 255) // 256
+    outp = []
+    for blockno in range(numblocks):
+        ptr = 256 * blockno
+        chunk = file_content[ptr:ptr + 256]
+        flags = 0x0
+        if familyid:
+            flags |= 0x2000
+        hd = struct.pack(b"<IIIIIIII",
+            UF2_MAGIC_START0, UF2_MAGIC_START1,
+            flags, ptr + appstartaddr, 256, blockno, numblocks, familyid)
+        while len(chunk) < 256:
+            chunk += b"\x00"
+        block = hd + chunk + datapadding + struct.pack(b"<I", UF2_MAGIC_END)
+        assert len(block) == 512
+        outp.append(block)
+    return b"".join(outp)
+
+class Block:
+    def __init__(self, addr):
+        self.addr = addr
+        self.bytes = bytearray(256)
+
+    def encode(self, blockno, numblocks):
+        global familyid
+        flags = 0x0
+        if familyid:
+            flags |= 0x2000
+        hd = struct.pack("<IIIIIIII",
+            UF2_MAGIC_START0, UF2_MAGIC_START1,
+            flags, self.addr, 256, blockno, numblocks, familyid)
+        hd += self.bytes[0:256]
+        while len(hd) < 512 - 4:
+            hd += b"\x00"
+        hd += struct.pack("<I", UF2_MAGIC_END)
+        return hd
+
+def convert_from_hex_to_uf2(buf):
+    global appstartaddr
+    appstartaddr = None
+    upper = 0
+    currblock = None
+    blocks = []
+    for line in buf.split('\n'):
+        if line[0] != ":":
+            continue
+        i = 1
+        rec = []
+        while i < len(line) - 1:
+            rec.append(int(line[i:i+2], 16))
+            i += 2
+        tp = rec[3]
+        if tp == 4:
+            upper = ((rec[4] << 8) | rec[5]) << 16
+        elif tp == 2:
+            upper = ((rec[4] << 8) | rec[5]) << 4
+        elif tp == 1:
+            break
+        elif tp == 0:
+            addr = upper + ((rec[1] << 8) | rec[2])
+            if appstartaddr == None:
+                appstartaddr = addr
+            i = 4
+            while i < len(rec) - 1:
+                if not currblock or currblock.addr & ~0xff != addr & ~0xff:
+                    currblock = Block(addr & ~0xff)
+                    blocks.append(currblock)
+                currblock.bytes[addr & 0xff] = rec[i]
+                addr += 1
+                i += 1
+    numblocks = len(blocks)
+    resfile = b""
+    for i in range(0, numblocks):
+        resfile += blocks[i].encode(i, numblocks)
+    return resfile
+
+def to_str(b):
+    return b.decode("utf-8")
+
+def get_drives():
+    drives = []
+    if sys.platform == "win32":
+        r = subprocess.check_output(["wmic", "PATH", "Win32_LogicalDisk",
+                                     "get", "DeviceID,", "VolumeName,",
+                                     "FileSystem,", "DriveType"])
+        for line in to_str(r).split('\n'):
+            words = re.split(r'\s+', line)
+            if len(words) >= 3 and words[1] == "2" and words[2] == "FAT":
+                drives.append(words[0])
+    else:
+        searchpaths = ["/media"]
+        if sys.platform == "darwin":
+            searchpaths = ["/Volumes"]
+        elif sys.platform == "linux":
+            searchpaths += ["/media/" + os.environ["USER"], '/run/media/' + os.environ["USER"]]
+
+        for rootpath in searchpaths:
+            if os.path.isdir(rootpath):
+                for d in os.listdir(rootpath):
+                    if os.path.isdir(rootpath):
+                        drives.append(os.path.join(rootpath, d))
+
+
+    def has_info(d):
+        try:
+            return os.path.isfile(d + INFO_FILE)
+        except:
+            return False
+
+    return list(filter(has_info, drives))
+
+
+def board_id(path):
+    with open(path + INFO_FILE, mode='r') as file:
+        file_content = file.read()
+    return re.search(r"Board-ID: ([^\r\n]*)", file_content).group(1)
+
+
+def list_drives():
+    for d in get_drives():
+        print(d, board_id(d))
+
+
+def write_file(name, buf):
+    with open(name, "wb") as f:
+        f.write(buf)
+    print("Wrote %d bytes to %s" % (len(buf), name))
+
+
+def load_families():
+    # The expectation is that the `uf2families.json` file is in the same
+    # directory as this script. Make a path that works using `__file__`
+    # which contains the full path to this script.
+    # filename = "uf2families.json"
+    # pathname = os.path.join(os.path.dirname(os.path.abspath(__file__)), filename)
+    # with open(pathname) as f:
+    #     chip_families = json.load(f)
+
+    families = {}
+    for family in chip_families:
+        families[family["short_name"]] = int(family["id"], 0)
+
+    return families
+
+
+def main():
+    global appstartaddr, familyid
+    def error(msg):
+        print(msg, file=sys.stderr)
+        sys.exit(1)
+    parser = argparse.ArgumentParser(description='Convert to UF2 or flash directly.')
+    parser.add_argument('input', metavar='INPUT', type=str, nargs='?',
+                        help='input file (HEX, BIN or UF2)')
+    parser.add_argument('-b', '--base', dest='base', type=str,
+                        default="0x2000",
+                        help='set base address of application for BIN format (default: 0x2000)')
+    parser.add_argument('-f', '--family', dest='family', type=str,
+                        default="0x0",
+                        help='specify familyID - number or name (default: 0x0)')
+    parser.add_argument('-o', '--output', metavar="FILE", dest='output', type=str,
+                        help='write output to named file; defaults to "flash.uf2" or "flash.bin" where sensible')
+    parser.add_argument('-d', '--device', dest="device_path",
+                        help='select a device path to flash')
+    parser.add_argument('-l', '--list', action='store_true',
+                        help='list connected devices')
+    parser.add_argument('-c', '--convert', action='store_true',
+                        help='do not flash, just convert')
+    parser.add_argument('-D', '--deploy', action='store_true',
+                        help='just flash, do not convert')
+    parser.add_argument('-w', '--wait', action='store_true',
+                        help='wait for device to flash')
+    parser.add_argument('-C', '--carray', action='store_true',
+                        help='convert binary file to a C array, not UF2')
+    parser.add_argument('-i', '--info', action='store_true',
+                        help='display header information from UF2, do not convert')
+    args = parser.parse_args()
+    appstartaddr = int(args.base, 0)
+
+    families = load_families()
+
+    if args.family.upper() in families:
+        familyid = families[args.family.upper()]
+    else:
+        try:
+            familyid = int(args.family, 0)
+        except ValueError:
+            error("Family ID needs to be a number or one of: " + ", ".join(families.keys()))
+
+    if args.list:
+        list_drives()
+    else:
+        if not args.input:
+            error("Need input file")
+        with open(args.input, mode='rb') as f:
+            inpbuf = f.read()
+        from_uf2 = is_uf2(inpbuf)
+        ext = "uf2"
+        if args.deploy:
+            outbuf = inpbuf
+        elif from_uf2 and not args.info:
+            outbuf = convert_from_uf2(inpbuf)
+            ext = "bin"
+        elif from_uf2 and args.info:
+            outbuf = ""
+            convert_from_uf2(inpbuf)
+        elif is_hex(inpbuf):
+            outbuf = convert_from_hex_to_uf2(inpbuf.decode("utf-8"))
+        elif args.carray:
+            outbuf = convert_to_carray(inpbuf)
+            ext = "h"
+        else:
+            outbuf = convert_to_uf2(inpbuf)
+        if not args.deploy and not args.info:
+            print("Converted to %s, output size: %d, start address: 0x%x" %
+                  (ext, len(outbuf), appstartaddr))
+        if args.convert or ext != "uf2":
+            if args.output == None:
+                args.output = "flash." + ext
+        if args.output:
+            write_file(args.output, outbuf)
+        if ext == "uf2" and not args.convert and not args.info:
+            drives = get_drives()
+            if len(drives) == 0:
+                if args.wait:
+                    print("Waiting for drive to deploy...")
+                    while len(drives) == 0:
+                        sleep(0.1)
+                        drives = get_drives()
+                elif not args.output:
+                    error("No drive to deploy.")
+            for d in drives:
+                print("Flashing %s (%s)" % (d, board_id(d)))
+                write_file(d + "/NEW.UF2", outbuf)
+
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/src/central.rs b/src/central.rs
new file mode 100644
index 0000000..d3fac41
--- /dev/null
+++ b/src/central.rs
@@ -0,0 +1,7 @@
+#![no_main]
+#![no_std]
+
+use rmk::macros::rmk_central;
+
+#[rmk_central]
+mod keybaord_central {}
diff --git a/src/peripheral.rs b/src/peripheral.rs
new file mode 100644
index 0000000..9d2ea92
--- /dev/null
+++ b/src/peripheral.rs
@@ -0,0 +1,7 @@
+#![no_main]
+#![no_std]
+
+use rmk::macros::rmk_peripheral;
+
+#[rmk_peripheral(id = 0)]
+mod keybaord_central {}
diff --git a/vial.json b/vial.json
new file mode 100644
index 0000000..671a5c2
--- /dev/null
+++ b/vial.json
@@ -0,0 +1,229 @@
+{
+   "name": "Crkbd",
+   "vendorId": "0x4C4B",
+   "productId": "0x4643",
+   "lighting": "none",
+   "matrix": {
+     "rows": 4,
+     "cols": 12
+   },
+   "layouts": {
+     "keymap":  [[
+   {
+     "y": 1,
+     "x": 3.5
+   },
+   "0,3",
+   {
+     "x": 7.5
+   },
+   "0,8"
+ ],
+ [
+   {
+     "y": -0.875,
+     "x": 2.5
+   },
+   "0,2",
+   {
+     "x": 1
+   },
+   "0,4",
+   {
+     "x": 5.5
+   },
+   "0,7",
+   {
+     "x": 1
+   },
+   "0,9"
+ ],
+ [
+   {
+     "y": -0.875,
+     "x": 5.5
+   },
+   "0,5",
+   {
+     "x": 3.5
+   },
+   "0,6"
+ ],
+ [
+   {
+     "y": -0.875,
+     "x": 0.5
+   },
+   "0,0",
+   "0,1",
+   {
+     "x": 11.5
+   },
+   "0,10",
+   "0,11"
+ ],
+ [
+   {
+     "y": -0.375,
+     "x": 3.5
+   },
+   "1,3",
+   {
+     "x": 7.5
+   },
+   "1,8"
+ ],
+ [
+   {
+     "y": -0.875,
+     "x": 2.5
+   },
+   "1,2",
+   {
+     "x": 1
+   },
+   "1,4",
+   {
+     "x": 5.5
+   },
+   "1,7",
+   {
+     "x": 1
+   },
+   "1,9"
+ ],
+ [
+   {
+     "y": -0.875,
+     "x": 5.5
+   },
+   "1,5",
+   {
+     "x": 3.5
+   },
+   "1,6"
+ ],
+ [
+   {
+     "y": -0.875,
+     "x": 0.5
+   },
+   "1,0",
+   "1,1",
+   {
+     "x": 11.5
+   },
+   "1,10",
+   "1,11"
+ ],
+ [
+   {
+     "y": -0.375,
+     "x": 3.5
+   },
+   "2,3",
+   {
+     "x": 7.5
+   },
+   "2,8"
+ ],
+ [
+   {
+     "y": -0.875,
+     "x": 2.5
+   },
+   "2,2",
+   {
+     "x": 1
+   },
+   "2,4",
+   {
+     "x": 5.5
+   },
+   "2,7",
+   {
+     "x": 1
+   },
+   "2,9"
+ ],
+ [
+   {
+     "y": -0.875,
+     "x": 5.5
+   },
+   "2,5",
+   {
+     "x": 3.5
+   },
+   "2,6"
+ ],
+ [
+   {
+     "y": -0.875,
+     "x": 0.5
+   },
+   "2,0",
+   "2,1",
+   {
+     "x": 11.5
+   },
+   "2,10",
+   "2,11"
+ ],
+ [
+   {
+     "y": -0.125,
+     "x": 4
+   },
+   "3,3",
+   {
+     "x": 6.5
+   },
+   "3,8"
+ ],
+ [
+   {
+     "r": 15,
+     "rx": 4.5,
+     "ry": 9.1,
+     "y": -4.85,
+     "x": -0.5
+   },
+   "3,4"
+ ],
+ [
+   {
+     "r": 30,
+     "rx": 5.4,
+     "ry": 9.3,
+     "y": -5.05,
+     "x": -1.4000000000000004,
+      "h": 1.5
+    },
+    "3,5"
+  ],
+  [
+    {
+      "r": -30,
+      "rx": 11.1,
+      "y": -5.05,
+      "x": 0.40000000000000036,
+      "h": 1.5
+    },
+    "3,6"
+  ],
+  [
+    {
+      "r": -15,
+      "rx": 12,
+      "ry": 9.1,
+      "y": -4.85,
+      "x": -0.5
+    },
+    "3,7"
+  ]
+]
+ 
+    }
+  }
+