From 5eea7991dbd0a1572f4f3fcd5097985c061d7440 Mon Sep 17 00:00:00 2001
From: Haobo Gu <haobogu@outlook.com>
Date: Sat, 27 Jan 2024 11:11:07 +0800
Subject: [PATCH] feat(example): add nrf52840 demo(no wireless yet)

Signed-off-by: Haobo Gu <haobogu@outlook.com>
---
 .vscode/settings.json              |    1 +
 boards/nrf52840/.cargo/config.toml |   40 +
 boards/nrf52840/Cargo.lock         | 1231 ++++++++++++++++++++++++++++
 boards/nrf52840/Cargo.toml         |   61 ++
 boards/nrf52840/build.rs           |   83 ++
 boards/nrf52840/memory.x           |   12 +
 boards/nrf52840/src/keymap.rs      |   21 +
 boards/nrf52840/src/macros.rs      |   12 +
 boards/nrf52840/src/main.rs        |   82 ++
 boards/nrf52840/src/vial.rs        |   29 +
 boards/nrf52840/vial.json          |   43 +
 11 files changed, 1615 insertions(+)
 create mode 100644 boards/nrf52840/.cargo/config.toml
 create mode 100644 boards/nrf52840/Cargo.lock
 create mode 100644 boards/nrf52840/Cargo.toml
 create mode 100644 boards/nrf52840/build.rs
 create mode 100644 boards/nrf52840/memory.x
 create mode 100644 boards/nrf52840/src/keymap.rs
 create mode 100644 boards/nrf52840/src/macros.rs
 create mode 100644 boards/nrf52840/src/main.rs
 create mode 100644 boards/nrf52840/src/vial.rs
 create mode 100644 boards/nrf52840/vial.json

diff --git a/.vscode/settings.json b/.vscode/settings.json
index f61ddff0..fcda6767 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -11,6 +11,7 @@
         "rmk/Cargo.toml",
         "boards/stm32h7/Cargo.toml",
         "boards/stm32f4/Cargo.toml",
+        "boards/nrf52840/Cargo.toml",
         "boards/rp2040/Cargo.toml"
     ],
     "rust-analyzer.showUnlinkedFileNotification": false,
diff --git a/boards/nrf52840/.cargo/config.toml b/boards/nrf52840/.cargo/config.toml
new file mode 100644
index 00000000..07e4e419
--- /dev/null
+++ b/boards/nrf52840/.cargo/config.toml
@@ -0,0 +1,40 @@
+[target.thumbv7m-none-eabi]
+# uncomment this to make `cargo run` execute programs on QEMU
+# runner = "qemu-system-arm -cpu cortex-m3 -machine lm3s6965evb -nographic -semihosting-config enable=on,target=native -kernel"
+
+[target.'cfg(all(target_arch = "arm", target_os = "none"))']
+# uncomment ONE of these three option to make `cargo run` start a GDB session
+# which option to pick depends on your system
+runner = "probe-rs run --chip nRF52840_xxAA"
+# runner = "gdb-multiarch -q -x openocd.gdb"
+# runner = "gdb -q -x openocd.gdb"
+
+rustflags = [
+  # Previously, the linker arguments --nmagic and -Tlink.x were set here.
+  # They are now set by build.rs instead. The linker argument can still
+  # only be set here, if a custom linker is needed.
+
+  # By default, the LLD linker is used, which is shipped with the Rust
+  # toolchain. If you run into problems with LLD, you can switch to the
+  # GNU linker by uncommenting this line:
+  # "-C", "linker=arm-none-eabi-ld",
+
+  # If you need to link to pre-compiled C libraries provided by a C toolchain
+  # use GCC as the linker by uncommenting the three lines below:
+  # "-C", "linker=arm-none-eabi-gcc",
+  # "-C", "link-arg=-Wl,-Tlink.x",
+  # "-C", "link-arg=-nostartfiles",
+]
+
+[build]
+# Pick ONE of these default compilation targets
+# target = "thumbv6m-none-eabi"        # Cortex-M0 and Cortex-M0+
+# target = "thumbv7m-none-eabi"        # Cortex-M3
+target = "thumbv7em-none-eabi"       # Cortex-M4 and Cortex-M7 (no FPU)
+# target = "thumbv7em-none-eabihf"     # Cortex-M4F and Cortex-M7F (with FPU)
+# target = "thumbv8m.base-none-eabi"   # Cortex-M23
+# target = "thumbv8m.main-none-eabi"   # Cortex-M33 (no FPU)
+# target = "thumbv8m.main-none-eabihf" # Cortex-M33 (with FPU)
+
+[env]
+DEFMT_LOG = "error"
\ No newline at end of file
diff --git a/boards/nrf52840/Cargo.lock b/boards/nrf52840/Cargo.lock
new file mode 100644
index 00000000..20c9a6cd
--- /dev/null
+++ b/boards/nrf52840/Cargo.lock
@@ -0,0 +1,1231 @@
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+version = "2.0.48"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f3531638e407dfc0814761abb7c00a5b54992b849452a0646b7f65c9f770f3f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "tap"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
+
+[[package]]
+name = "thiserror"
+version = "1.0.56"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d54378c645627613241d077a3a79db965db602882668f9136ac42af9ecb730ad"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.56"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa0faa943b50f3db30a20aa7e265dbc66076993efed8463e8de414e5d06d3471"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.48",
+]
+
+[[package]]
+name = "typenum"
+version = "1.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
+
+[[package]]
+name = "usb-device"
+version = "0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f6cc3adc849b5292b4075fc0d5fdcf2f24866e88e336dd27a8943090a520508"
+dependencies = [
+ "defmt",
+]
+
+[[package]]
+name = "usbd-hid"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "975bd411f4a939986751ea09992a24fa47c4d25c6ed108d04b4c2999a4fd0132"
+dependencies = [
+ "defmt",
+ "serde",
+ "ssmarshal",
+ "usb-device",
+ "usbd-hid-macros",
+]
+
+[[package]]
+name = "usbd-hid-descriptors"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dcbee8c6735e90894fba04770bc41e11fd3c5256018856e15dc4dd1e6c8a3dd1"
+dependencies = [
+ "bitfield",
+]
+
+[[package]]
+name = "usbd-hid-macros"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "261079a9ada015fa1acac7cc73c98559f3a92585e15f508034beccf6a2ab75a2"
+dependencies = [
+ "byteorder",
+ "proc-macro2",
+ "quote",
+ "serde",
+ "syn 1.0.109",
+ "usbd-hid-descriptors",
+]
+
+[[package]]
+name = "vcell"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77439c1b53d2303b20d9459b1ade71a83c716e3f9c34f3228c00e6f185d6c002"
+
+[[package]]
+name = "version_check"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
+
+[[package]]
+name = "void"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
+
+[[package]]
+name = "volatile-register"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de437e2a6208b014ab52972a27e59b33fa2920d3e00fe05026167a1c509d19cc"
+dependencies = [
+ "vcell",
+]
+
+[[package]]
+name = "wyz"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05f360fc0b24296329c78fda852a1e9ae82de9cf7b27dae4b7f62f118f77b9ed"
+dependencies = [
+ "tap",
+]
+
+[[package]]
+name = "xz2"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "388c44dc09d76f1536602ead6d325eb532f5c122f17782bd57fb47baeeb767e2"
+dependencies = [
+ "lzma-sys",
+]
diff --git a/boards/nrf52840/Cargo.toml b/boards/nrf52840/Cargo.toml
new file mode 100644
index 00000000..47069ba4
--- /dev/null
+++ b/boards/nrf52840/Cargo.toml
@@ -0,0 +1,61 @@
+[package]
+name = "rmk-nrf52840"
+version = "0.1.3"
+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 = "0.1.3", path = "../../rmk" }
+cortex-m = { version = "0.7.7", features = ['critical-section-single-core'] }
+cortex-m-rt = "0.7.3"
+embassy-time = { version = "0.3", features = ["tick-hz-32_768", "defmt"] }
+embassy-nrf = { version = "0.1.0", features = ["defmt", "nrf52840", "time-driver-rtc1", "gpiote", "unstable-pac", "time"] }
+
+embassy-executor = { version = "0.5", features = [
+    "defmt",
+    "arch-cortex-m",
+    "executor-thread",
+    "integrated-timers",
+] }
+packed_struct = { version = "0.10.1", default-features = false }
+embedded-storage = "0.3"
+static_cell = "2"
+
+# rtt-target = "0.5.0"
+# panic-rtt-target = { version = "0.1.2", features = ["cortex-m"] }
+# log = "0.4.19"
+
+# defmt deps
+defmt = "0.3"
+defmt-rtt = "0.4"
+panic-probe = { version = "0.3", features = ["print-defmt"] }
+
+[build-dependencies]
+xz2 = "0.1.7"
+json = "0.12"
+const-gen = "1.6"
+
+[[bin]]
+name = "rmk-nrf52840"
+test = false
+bench = false
+
+[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/boards/nrf52840/build.rs b/boards/nrf52840/build.rs
new file mode 100644
index 00000000..75db1551
--- /dev/null
+++ b/boards/nrf52840/build.rs
@@ -0,0 +1,83 @@
+//! 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
+    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 extra linker script from defmt
+    println!("cargo:rustc-link-arg=-Tdefmt.x");
+
+    // Use flip-link overflow check: https://github.com/knurling-rs/flip-link
+    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 = vec![
+        const_declaration!(pub VIAL_KEYBOARD_DEF = keyboard_def_compressed),
+        const_declaration!(pub VIAL_KEYBOARD_ID = keyboard_id),
+    ]
+    .join("\n");
+    fs::write(&out_file, const_declarations).unwrap();
+}
diff --git a/boards/nrf52840/memory.x b/boards/nrf52840/memory.x
new file mode 100644
index 00000000..9e5fc20a
--- /dev/null
+++ b/boards/nrf52840/memory.x
@@ -0,0 +1,12 @@
+MEMORY
+{
+  /* NOTE 1 K = 1 KiBi = 1024 bytes */
+  FLASH : ORIGIN = 0x00000000, LENGTH = 1024K
+  RAM : ORIGIN = 0x20000000, LENGTH = 256K
+
+  /* These values correspond to the NRF52840 with Softdevices S140 7.3.0 */
+  /*
+     FLASH : ORIGIN = 0x00027000, LENGTH = 868K
+     RAM : ORIGIN = 0x20020000, LENGTH = 128K
+  */
+}
\ No newline at end of file
diff --git a/boards/nrf52840/src/keymap.rs b/boards/nrf52840/src/keymap.rs
new file mode 100644
index 00000000..c4d55227
--- /dev/null
+++ b/boards/nrf52840/src/keymap.rs
@@ -0,0 +1,21 @@
+use rmk::action::KeyAction;
+use rmk::{a, k, layer, mo};
+pub(crate) const COL: usize = 3;
+pub(crate) const ROW: usize = 4;
+pub(crate) const NUM_LAYER: usize = 2;
+
+#[rustfmt::skip]
+pub static KEYMAP: [[[KeyAction; COL]; ROW]; NUM_LAYER] = [
+    layer!([
+        [k!(AudioVolUp), k!(B), k!(AudioVolDown)],
+        [k!(Kp4), k!(LShift), k!(Kp6)],
+        [mo!(1), k!(Kp2), k!(Kp3)],
+        [mo!(1), a!(No), k!(Kp0)]
+    ]),
+    layer!([
+        [k!(Kp7), k!(Kp8), k!(Kp9)],
+        [k!(Kp4), k!(LCtrl), k!(Kp6)],
+        [mo!(1), k!(Kp2), k!(Kp3)],
+        [mo!(1), a!(No), k!(Kp0)]
+    ]),
+];
diff --git a/boards/nrf52840/src/macros.rs b/boards/nrf52840/src/macros.rs
new file mode 100644
index 00000000..ed5640ce
--- /dev/null
+++ b/boards/nrf52840/src/macros.rs
@@ -0,0 +1,12 @@
+macro_rules! config_matrix_pins_nrf {
+    (peripherals: $p:ident, input: [$($in_pin:ident), *], output: [$($out_pin:ident), +]) => {
+        {
+            let mut output_pins = [$(Output::new(AnyPin::from($p.$out_pin), embassy_nrf::gpio::Level::Low, embassy_nrf::gpio::OutputDrive::Standard)), +];
+            let input_pins = [$(Input::new(AnyPin::from($p.$in_pin), embassy_nrf::gpio::Pull::Down)), +];
+            output_pins.iter_mut().for_each(|p| {
+                p.set_low();
+            });
+            (input_pins, output_pins)
+        }
+    };
+}
diff --git a/boards/nrf52840/src/main.rs b/boards/nrf52840/src/main.rs
new file mode 100644
index 00000000..84919763
--- /dev/null
+++ b/boards/nrf52840/src/main.rs
@@ -0,0 +1,82 @@
+#![no_main]
+#![no_std]
+
+#[macro_use]
+mod macros;
+mod keymap;
+mod vial;
+
+use crate::keymap::{COL, NUM_LAYER, ROW};
+use core::{cell::RefCell, mem};
+use defmt::*;
+use defmt_rtt as _;
+use embassy_executor::Spawner;
+use embassy_nrf::{
+    bind_interrupts,
+    gpio::{AnyPin, Input, Output},
+    nvmc::Nvmc,
+    pac,
+    peripherals::{self, USBD},
+    usb::{self, vbus_detect::HardwareVbusDetect, Driver},
+};
+use panic_probe as _;
+use rmk::{initialize_keyboard_and_run, keymap::KeyMap};
+use static_cell::StaticCell;
+use vial::{VIAL_KEYBOARD_DEF, VIAL_KEYBOARD_ID};
+
+bind_interrupts!(struct Irqs {
+    USBD => usb::InterruptHandler<peripherals::USBD>;
+    POWER_CLOCK => usb::vbus_detect::InterruptHandler;
+});
+
+const EEPROM_SIZE: usize = 128;
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    // if cfg!(debug_assertions) {
+    //     rtt_logger::init(log::LevelFilter::Info);
+    // }
+    info!("RMK start!");
+    // Initialize peripherals
+    let p = embassy_nrf::init(Default::default());
+    let clock: pac::CLOCK = unsafe { mem::transmute(()) };
+    info!("Enabling ext hfosc...");
+    clock.tasks_hfclkstart.write(|w| unsafe { w.bits(1) });
+    while clock.events_hfclkstarted.read().bits() != 1 {}
+
+    // Usb config
+    let driver = Driver::new(p.USBD, Irqs, HardwareVbusDetect::new(Irqs));
+
+    // Pin config
+    let (input_pins, output_pins) = config_matrix_pins_nrf!(peripherals: p, input: [P0_07, P0_08, P0_11, P0_12], output: [P0_13, P0_14, P0_15]);
+    // Use internal flash to emulate eeprom
+    let f = Nvmc::new(p.NVMC);
+    // Keymap + eeprom config
+    static MY_KEYMAP: StaticCell<RefCell<KeyMap<Nvmc, EEPROM_SIZE, ROW, COL, NUM_LAYER>>> =
+        StaticCell::new();
+    let keymap = MY_KEYMAP.init(RefCell::new(KeyMap::new(
+        crate::keymap::KEYMAP,
+        Some(f),
+        None,
+    )));
+
+    // Start serving
+    initialize_keyboard_and_run::<
+        Driver<'_, USBD, HardwareVbusDetect>,
+        Input<'_, AnyPin>,
+        Output<'_, AnyPin>,
+        Nvmc,
+        EEPROM_SIZE,
+        ROW,
+        COL,
+        NUM_LAYER,
+    >(
+        driver,
+        input_pins,
+        output_pins,
+        keymap,
+        VIAL_KEYBOARD_ID,
+        VIAL_KEYBOARD_DEF,
+    )
+    .await;
+}
diff --git a/boards/nrf52840/src/vial.rs b/boards/nrf52840/src/vial.rs
new file mode 100644
index 00000000..9c3362cf
--- /dev/null
+++ b/boards/nrf52840/src/vial.rs
@@ -0,0 +1,29 @@
+// Use `build.rs` automatically generate vial config, according to `vial.json`
+// Please put `vial.json` at your project's root
+include!(concat!(env!("OUT_DIR"), "/config_generated.rs"));
+
+// Or you can manually generate vial config then put here
+// pub const VIAL_KEYBOARD_ID: [u8; 8] = [0xB9, 0xBC, 0x09, 0xB2, 0x9D, 0x37, 0x4C, 0xEA];
+// pub const VIAL_KEYBOARD_DEF: [u8; 308] = [
+//     0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x04, 0xE6, 0xD6, 0xB4, 0x46, 0x02, 0x00, 0x21, 0x01,
+//     0x16, 0x00, 0x00, 0x00, 0x74, 0x2F, 0xE5, 0xA3, 0xE0, 0x01, 0x58, 0x00, 0xF1, 0x5D, 0x00, 0x3D,
+//     0x88, 0x89, 0xC6, 0x54, 0x36, 0xC3, 0x17, 0x4F, 0xE4, 0xE2, 0x11, 0x2F, 0x22, 0xB0, 0xBC, 0xC8,
+//     0x21, 0x18, 0x12, 0x8B, 0x06, 0x39, 0x42, 0xED, 0x2D, 0x7A, 0x5C, 0xC0, 0x20, 0x95, 0xFA, 0x59,
+//     0xBD, 0x04, 0x61, 0xF7, 0xDE, 0x2F, 0xD2, 0xFB, 0x8E, 0xAD, 0x8E, 0xE5, 0x16, 0x4E, 0xEA, 0x09,
+//     0xC7, 0x59, 0xDC, 0x04, 0x50, 0xB5, 0x7A, 0x56, 0x03, 0xA4, 0x7C, 0xE2, 0xFE, 0x87, 0x69, 0xA2,
+//     0xA1, 0xF1, 0xFC, 0xBB, 0xF8, 0x7D, 0xD8, 0x5F, 0x6A, 0x39, 0xB4, 0xC9, 0x00, 0xE8, 0x52, 0xD3,
+//     0xEE, 0x5C, 0x59, 0x88, 0x1E, 0x19, 0x66, 0x17, 0x5D, 0xF6, 0xD2, 0x28, 0x0B, 0xC9, 0xB8, 0x38,
+//     0x43, 0x9A, 0x38, 0x26, 0x8C, 0x45, 0xB1, 0x9C, 0xE5, 0x1B, 0x50, 0xF5, 0x71, 0x7F, 0x3A, 0xB4,
+//     0xE9, 0xB5, 0x2F, 0xA9, 0xEA, 0xE3, 0xC8, 0xAC, 0x3F, 0x77, 0x37, 0x28, 0xA3, 0x4E, 0xC7, 0x14,
+//     0xE4, 0xCF, 0x31, 0xCB, 0x33, 0x11, 0x3F, 0x27, 0x9D, 0xFB, 0x5C, 0x61, 0x96, 0xFE, 0x27, 0x7B,
+//     0x04, 0x13, 0x1F, 0xEC, 0xD6, 0x57, 0xD2, 0x32, 0xB8, 0x00, 0x4E, 0x21, 0x32, 0x79, 0xA9, 0x09,
+//     0x45, 0xCD, 0x11, 0x6F, 0xF9, 0x37, 0xFB, 0x57, 0xF7, 0x28, 0xC3, 0xAF, 0x00, 0x0F, 0xF3, 0xB2,
+//     0x1F, 0xC3, 0x7C, 0x84, 0xA0, 0xF0, 0x09, 0xEE, 0x49, 0x99, 0x39, 0xC2, 0x69, 0x4A, 0xFE, 0x38,
+//     0xFE, 0xE7, 0x80, 0xCA, 0x37, 0x46, 0x7B, 0xC9, 0xF4, 0x39, 0x7B, 0x30, 0x0E, 0x22, 0xA6, 0xD3,
+//     0x18, 0x1B, 0xA7, 0x70, 0xB9, 0x14, 0x91, 0x13, 0xC2, 0x5F, 0x02, 0xD1, 0x1A, 0x62, 0x6B, 0xC6,
+//     0xFC, 0xD3, 0x18, 0xC0, 0x62, 0xA5, 0xEA, 0xD0, 0xDF, 0x18, 0xDD, 0xD3, 0x53, 0x63, 0x11, 0x08,
+//     0x00, 0x00, 0x00, 0x00, 0xF5, 0x5B, 0x73, 0xB4, 0xF2, 0x19, 0x3D, 0xF2, 0x00, 0x01, 0x8D, 0x02,
+//     0xD9, 0x02, 0x00, 0x00, 0xC6, 0xA2, 0x63, 0x43, 0xB1, 0xC4, 0x67, 0xFB, 0x02, 0x00, 0x00, 0x00,
+//     0x00, 0x04, 0x59, 0x5A,
+// ];
+
diff --git a/boards/nrf52840/vial.json b/boards/nrf52840/vial.json
new file mode 100644
index 00000000..8bc2797d
--- /dev/null
+++ b/boards/nrf52840/vial.json
@@ -0,0 +1,43 @@
+{
+    "name": "HID Keyboard",
+    "vendorId": "0x4C4B",
+    "productId": "0x4643",
+    "lighting": "none",
+    "matrix": {
+        "rows": 4,
+        "cols": 3
+    },
+    "layouts": {
+        "labels": [
+            [
+                "label",
+                "label2"
+            ]
+        ],
+        "keymap": [
+            [
+                "0,0",
+                "0,1",
+                "0,2"
+            ],
+            [
+                "1,0",
+                "1,1",
+                "1,2"
+            ],
+            [
+                "2,0",
+                "2,1",
+                "2,2"
+            ],
+            [
+                {
+                    "y": -2,
+                    "x": 4
+                },
+                "3,0",
+                "3,2"
+            ]
+        ]
+    }
+}
\ No newline at end of file