diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d8efaac..8c9aca1 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,6 +24,7 @@ jobs:
           - stm32h7b0vb
           - esp32c3
           - esp32c6
+          - esp32h2
     steps:
       - uses: cargo-bins/cargo-binstall@main
       - uses: actions/checkout@v3
@@ -50,6 +51,7 @@ jobs:
           - pico_w
           - esp32c3
           - esp32c6
+          - esp32h2
     steps:
       - uses: cargo-bins/cargo-binstall@main
       - uses: actions/checkout@v3
diff --git a/esp32h2/.cargo/config.toml b/esp32h2/.cargo/config.toml
new file mode 100644
index 0000000..3f2f5ea
--- /dev/null
+++ b/esp32h2/.cargo/config.toml
@@ -0,0 +1,14 @@
+[target.'cfg(all(any(target_arch = "riscv32", target_arch = "xtensa"), target_os = "none"))']
+runner = "espflash flash --monitor"
+
+[build]
+target = "riscv32imac-unknown-none-elf"
+rustflags = [
+  # Required to obtain backtraces (e.g. when using the "esp-backtrace" crate.)
+  # NOTE: May negatively impact performance of produced code
+  "-C", "force-frame-pointers",
+]
+
+[env]
+ESP_LOG = "info"
+KEYBOARD_TOML_PATH =  { value = "keyboard.toml", relative = true }
diff --git a/esp32h2/.gitignore b/esp32h2/.gitignore
new file mode 100644
index 0000000..406c95c
--- /dev/null
+++ b/esp32h2/.gitignore
@@ -0,0 +1,8 @@
+target
+
+*.bin
+*.elf
+*.hex
+*.uf2
+
+.DS_Store
diff --git a/esp32h2/Cargo.toml b/esp32h2/Cargo.toml
new file mode 100644
index 0000000..93687a2
--- /dev/null
+++ b/esp32h2/Cargo.toml
@@ -0,0 +1,76 @@
+[package]
+name = "{{ project_name }}"
+version = "0.1.0"
+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 = "2024"
+license = "MIT OR Apache-2.0"
+
+[dependencies]
+# TODO: switch to crates-io version when it's released.
+rmk = { git = "https://github.com/HaoboGu/rmk", rev = "9a740762d80b208c2180cfd2dbde7ed889339d3e", default-features = false, features = [
+    "esp32h2_ble",
+    "log",
+    "storage",
+    "vial",
+] }
+embassy-executor = { version = "0.10" }
+esp-backtrace = { version = "0.19", features = [
+    "esp32h2",
+    "panic-handler",
+    "println",
+] }
+esp-storage = { version = "0.9", features = ["esp32h2"] }
+esp-hal = { version = "1.1", features = ["esp32h2", "unstable"] }
+esp-alloc = { version = "0.10" }
+esp-println = { version = "0.17", features = ["esp32h2", "log-04"] }
+esp-radio = { version = "0.18", features = ["esp32h2", "unstable", "ble"] }
+esp-rtos = { version = "0.3", features = ["esp32h2", "esp-radio", "embassy"] }
+esp-bootloader-esp-idf = { version = "0.5", features = ["esp32h2", "log-04"] }
+bt-hci = { version = "0.9" }
+
+[build-dependencies]
+xz2 = "0.1.7"
+json = "0.12"
+const-gen = "1.6"
+embuild = "0.33"
+cc = "1.2.9"
+
+[[bin]]
+name = "{{ project_name }}"
+test = false
+bench = false
+
+[profile.dev.package.esp-storage]
+opt-level = 3
+
+[profile.dev]
+# Rust debug is too slow.
+# For debug builds always builds with some optimization
+opt-level = "s"
+
+[profile.release]
+codegen-units = 1        # LLVM can perform better optimizations using a single thread
+debug = 2
+debug-assertions = false
+incremental = false
+lto = 'thin'
+opt-level = 3
+overflow-checks = false
+
+# esp-radio (crates.io 0.18) still pins bt-hci 0.8, but rmk/trouble-host need bt-hci 0.9.
+# Pin the esp-hal graph to the embassy-rs/esp-hal fork (esp-radio 0.18 + bt-hci 0.9) —
+# the same rev trouble's own esp CI uses. Drop once esp-radio ships bt-hci 0.9.
+[patch.crates-io]
+esp-alloc = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+esp-backtrace = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+esp-bootloader-esp-idf = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+esp-hal = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+esp-println = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+esp-radio = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+esp-rtos = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+esp-storage = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+embassy-executor = { git = "https://github.com/embassy-rs/embassy.git", rev = "1d3c3dec8edbf37450d0174b312f8d3d6cc0bf12" }
diff --git a/esp32h2/Makefile.toml b/esp32h2/Makefile.toml
new file mode 100644
index 0000000..0e8ab96
--- /dev/null
+++ b/esp32h2/Makefile.toml
@@ -0,0 +1,12 @@
+[tasks.build]
+command = "cargo"
+args = ["build", "--release"]
+
+[tasks.uf2]
+install_crate = { crate_name = "cargo-espflash", binary = "cargo", test_arg = [
+    "espflash",
+    "--help",
+] }
+command = "cargo"
+args = ["espflash", "save-image", "--release", "--chip", "esp32h2", "--merge", "{{ project_name }}.bin"]
+dependencies = ["build"]
diff --git a/esp32h2/README.md b/esp32h2/README.md
new file mode 100644
index 0000000..c5084c0
--- /dev/null
+++ b/esp32h2/README.md
@@ -0,0 +1,68 @@
+# RMK 
+
+RMK is a feature-rich and easy-to-use keyboard firmware.
+
+## Use the template
+
+To run this firmware, you should have latest Rust installed. The full instruction of installing esp Rust toolchain can be found [here](https://docs.esp-rs.org/book/installation/index.html).
+
+[`espflash`](https://github.com/esp-rs/espflash) should also be installed:
+
+```
+cargo install cargo-espflash espflash
+```
+
+After having everything installed, use the following command to run the example:
+
+```
+cargo run --release
+```
+
+If everything is good, you'll see the log as the following:
+
+```shell
+cargo run --release  
+    Compiling ...
+    ...
+    ...
+    Finished `release` profile [optimized + debuginfo] target(s) in 11.70s
+     Running `espflash flash --monitor --port /dev/cu.usbmodem211401 target/riscv32imac-unknown-none-elf/release/{{ project_name }}`
+[2025-04-10T10:01:23Z INFO ] Serial port: '/dev/cu.usbmodem211401'
+[2025-04-10T10:01:23Z INFO ] Connecting...
+[2025-04-10T10:01:23Z INFO ] Using flash stub
+Chip type:         esp32h2 (revision v0.1)
+Crystal frequency: 32 MHz
+Flash size:        4MB
+Features:          BLE 5, IEEE 802.15.4
+MAC address:       40:4c:ca:5b:c7:dc
+App/part. size:    768,944/4,128,768 bytes, 18.62%
+[2025-04-10T10:01:23Z INFO ] Segment at address '0x0' has not changed, skipping write
+[2025-04-10T10:01:23Z INFO ] Segment at address '0x8000' has not changed, skipping write
+[00:00:06] [========================================]     411/411     0x10000                                                                                             [2025-04-10T10:01:31Z INFO ] Flashing has completed!
+```
+
+If espflash reports the following error:
+
+```
+Error: espflash::connection_failed
+
+  × Error while connecting to device
+  ╰─▶ Serial port not found
+```
+
+You should to identify which serial port are connected to your esp board, and use `--port` to specify the used serial port:
+
+```
+# Suppose that the esp board are connected to /dev/cu.usbmodem211401
+cargo run --release -- --port /dev/cu.usbmodem211401
+```
+
+If you want to get some insight of segments of your binary, [`espsegs`](https://github.com/bjoernQ/espsegs) would help:
+
+```
+# Install it first
+cargo install --git https://github.com/bjoernQ/espsegs
+
+# Check all segments
+espsegs target/riscv32imac-unknown-none-elf/release/{{ project_name }} --chip esp32h2
+```
\ No newline at end of file
diff --git a/esp32h2/build.rs b/esp32h2/build.rs
new file mode 100644
index 0000000..147d1e0
--- /dev/null
+++ b/esp32h2/build.rs
@@ -0,0 +1,49 @@
+use std::fs::File;
+use std::io::Read;
+use std::path::Path;
+use std::{env, fs};
+
+use const_gen::*;
+use xz2::read::XzEncoder;
+
+fn main() {
+    println!("cargo:rerun-if-changed=keyboard.toml");
+
+    // Generate vial config at the root of project
+    println!("cargo:rerun-if-changed=vial.json");
+    generate_vial_config();
+
+    println!("cargo:rustc-link-arg-bins=-Tlinkall.x");
+
+    // Set the extra linker script from defmt
+    // println!("cargo:rustc-link-arg=-Tdefmt.x");
+}
+
+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/esp32h2/keyboard.toml b/esp32h2/keyboard.toml
new file mode 100644
index 0000000..33fadba
--- /dev/null
+++ b/esp32h2/keyboard.toml
@@ -0,0 +1,53 @@
+[keyboard]
+name = "{{ project_name }}"
+product_name = "{{ project_name }}"
+vendor_id = 0x4c4b
+product_id = 0x4643
+manufacturer = "RMK"
+chip = "esp32h2"
+usb_enable = false
+
+[matrix]
+# Row and col pins are mandatory
+# Note: esp32h2 exposes GPIO0-15 and GPIO22-27 (GPIO16-21 don't exist)
+row_pins = ["GPIO6", "GPIO7", "GPIO10", "GPIO11"]
+col_pins = ["GPIO3", "GPIO4", "GPIO5"]
+
+# RMK uses col2row as the default matrix diode direction, if you want to use a row2col matrix, add `row2col = true`
+# row2col = true
+
+[layout]
+rows = 4
+cols = 3
+layers = 2
+keymap = [
+    [
+        ["A", "B", "C"],
+        ["Kc1", "Kc2", "Kc3"],
+        ["LCtrl", "MO(1)", "LShift"],
+        ["OSL(1)", "LT(2, Kc9)", "LM(1, LShift | LGui)"]
+    ],
+    [
+        ["_", "TT(1)", "TG(2)"],
+        ["_", "_", "_"],
+        ["_", "_", "_"],
+        ["_", "_", "_"]
+    ],
+]
+
+[light]
+# All light pins are high-active by default, uncomment if you want it to be low-active
+# capslock.pin = "GPIO12"
+# capslock.low_active = true
+# scrolllock.pin = "GPIO13"
+# scrolllock.low_active = true
+# Just ignore if no light pin is used for it
+# numslock.pin = "GPIO14"
+# numslock.low_active = true
+
+[storage]
+# Storage feature is enabled by default
+# enabled = false
+
+[ble]
+enabled = true
diff --git a/esp32h2/rust-toolchain.toml b/esp32h2/rust-toolchain.toml
new file mode 100644
index 0000000..e11abcb
--- /dev/null
+++ b/esp32h2/rust-toolchain.toml
@@ -0,0 +1,6 @@
+[toolchain]
+channel = "stable"
+components = ["rust-src", "rustfmt", "llvm-tools"]
+targets = [
+    "riscv32imac-unknown-none-elf",
+]
diff --git a/esp32h2/src/main.rs b/esp32h2/src/main.rs
new file mode 100644
index 0000000..c3bc882
--- /dev/null
+++ b/esp32h2/src/main.rs
@@ -0,0 +1,9 @@
+#![no_std]
+#![no_main]
+
+use rmk::macros::rmk_keyboard;
+
+// Vial config is automatically generated by `build.rs`, according to `vial.json`
+// Please put `vial.json` at your project's root
+#[rmk_keyboard]
+mod keyboard {}
diff --git a/esp32h2/vial.json b/esp32h2/vial.json
new file mode 100644
index 0000000..809c81f
--- /dev/null
+++ b/esp32h2/vial.json
@@ -0,0 +1,74 @@
+{
+    "name": "{{ project_name }}",
+    "vendorId": "0x4C4B",
+    "productId": "0x4643",
+    "lighting": "none",
+    "matrix": {
+        "rows": 4,
+        "cols": 3
+    },
+    "customKeycodes": [
+        {
+            "name": "BT0",
+            "title": "Bluetooth Channel 0",
+            "shortName": "BT0"
+        },
+        {
+            "name": "BT1",
+            "title": "Bluetooth Channel 1",
+            "shortName": "BT1"
+        },
+        {
+            "name": "BT2",
+            "title": "Bluetooth Channel 2",
+            "shortName": "BT2"
+        },
+        {
+            "name": "NEXT_BT",
+            "title": "Switch to the next Bluetooth channel",
+            "shortName": "Next\nBT"
+        },
+        {
+            "name": "PREV_BT",
+            "title": "Switch to the previous Bluetooth channel",
+            "shortName": "Prev\nBT"
+        },
+        {
+            "name": "CLR_BT",
+            "title": "Clear bond info for current channel",
+            "shortName": "Clear\nBT"
+        },
+        {
+            "name": "SWITCH",
+            "title": "Switch default output mode between USB/BLE",
+            "shortName": "Switch\nOutput"
+        }
+    ],
+    "layouts": {
+        "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
diff --git a/esp32h2_split/.cargo/config.toml b/esp32h2_split/.cargo/config.toml
new file mode 100644
index 0000000..3f2f5ea
--- /dev/null
+++ b/esp32h2_split/.cargo/config.toml
@@ -0,0 +1,14 @@
+[target.'cfg(all(any(target_arch = "riscv32", target_arch = "xtensa"), target_os = "none"))']
+runner = "espflash flash --monitor"
+
+[build]
+target = "riscv32imac-unknown-none-elf"
+rustflags = [
+  # Required to obtain backtraces (e.g. when using the "esp-backtrace" crate.)
+  # NOTE: May negatively impact performance of produced code
+  "-C", "force-frame-pointers",
+]
+
+[env]
+ESP_LOG = "info"
+KEYBOARD_TOML_PATH =  { value = "keyboard.toml", relative = true }
diff --git a/esp32h2_split/.gitignore b/esp32h2_split/.gitignore
new file mode 100644
index 0000000..406c95c
--- /dev/null
+++ b/esp32h2_split/.gitignore
@@ -0,0 +1,8 @@
+target
+
+*.bin
+*.elf
+*.hex
+*.uf2
+
+.DS_Store
diff --git a/esp32h2_split/Cargo.toml b/esp32h2_split/Cargo.toml
new file mode 100644
index 0000000..b124785
--- /dev/null
+++ b/esp32h2_split/Cargo.toml
@@ -0,0 +1,86 @@
+[package]
+name = "{{ project_name }}"
+version = "0.1.0"
+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 = "2024"
+license = "MIT OR Apache-2.0"
+
+[dependencies]
+# TODO: switch to crates-io version when it's released.
+rmk = { git = "https://github.com/HaoboGu/rmk", rev = "9a740762d80b208c2180cfd2dbde7ed889339d3e", default-features = false, features = [
+    "esp32h2_ble",
+    "log",
+    "split",
+    "async_matrix",
+    "storage",
+    "vial",
+] }
+embassy-executor = { version = "0.10" }
+esp-backtrace = { version = "0.19", features = [
+    "esp32h2",
+    "panic-handler",
+    "println",
+] }
+esp-storage = { version = "0.9", features = ["esp32h2"] }
+esp-hal = { version = "1.1", features = ["esp32h2", "unstable"] }
+esp-alloc = { version = "0.10" }
+esp-println = { version = "0.17", features = ["esp32h2", "log-04"] }
+esp-radio = { version = "0.18", features = ["esp32h2", "unstable", "ble"] }
+esp-rtos = { version = "0.3", features = ["esp32h2", "esp-radio", "embassy"] }
+esp-bootloader-esp-idf = { version = "0.5", features = ["esp32h2", "log-04"] }
+bt-hci = { version = "0.9" }
+
+[build-dependencies]
+xz2 = "0.1.7"
+json = "0.12"
+const-gen = "1.6"
+embuild = "0.33"
+cc = "1.2.9"
+
+# Split keyboard example
+[[bin]]
+name = "central"
+path = "src/central.rs"
+test = false
+bench = false
+
+[[bin]]
+name = "peripheral"
+path = "src/peripheral.rs"
+test = false
+bench = false
+
+[profile.dev.package.esp-storage]
+opt-level = 3
+
+[profile.dev]
+# Rust debug is too slow.
+# For debug builds always builds with some optimization
+opt-level = "s"
+
+[profile.release]
+codegen-units = 1        # LLVM can perform better optimizations using a single thread
+debug = 2
+debug-assertions = false
+incremental = false
+lto = 'thin'
+opt-level = 3
+overflow-checks = false
+
+# esp-radio (crates.io 0.18) still pins bt-hci 0.8, but rmk/trouble-host need bt-hci 0.9.
+# Pin the esp-hal graph to the embassy-rs/esp-hal fork (esp-radio 0.18 + bt-hci 0.9) —
+# the same rev trouble's own esp CI uses. Drop once esp-radio ships bt-hci 0.9.
+[patch.crates-io]
+esp-alloc = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+esp-backtrace = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+esp-bootloader-esp-idf = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+esp-hal = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+esp-println = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+esp-radio = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+esp-rtos = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+esp-storage = { git = "https://github.com/embassy-rs/esp-hal.git", rev = "b7eec0fe94aa62d49dfc12d3bf87ca038a8d119f" }
+embassy-executor = { git = "https://github.com/embassy-rs/embassy.git", rev = "1d3c3dec8edbf37450d0174b312f8d3d6cc0bf12" }
diff --git a/esp32h2_split/Makefile.toml b/esp32h2_split/Makefile.toml
new file mode 100644
index 0000000..0a56e76
--- /dev/null
+++ b/esp32h2_split/Makefile.toml
@@ -0,0 +1,25 @@
+[tasks.build]
+command = "cargo"
+args = ["build", "--release"]
+
+[tasks.save-image-central]
+install_crate = { crate_name = "cargo-espflash", binary = "cargo", test_arg = [
+    "espflash",
+    "--help",
+] }
+command = "cargo"
+args = ["espflash", "save-image", "--release", "--bin", "central", "--chip", "esp32h2", "--merge", "central.bin"]
+dependencies = ["build"]
+
+[tasks.save-image-peripheral]
+install_crate = { crate_name = "cargo-espflash", binary = "cargo", test_arg = [
+    "espflash",
+    "--help",
+] }
+command = "cargo"
+args = ["espflash", "save-image", "--release", "--bin", "peripheral", "--chip", "esp32h2", "--merge", "peripheral.bin"]
+dependencies = ["build"]
+
+[tasks.uf2]
+dependencies = ["save-image-central", "save-image-peripheral"]
+
diff --git a/esp32h2_split/README.md b/esp32h2_split/README.md
new file mode 100644
index 0000000..8d184ce
--- /dev/null
+++ b/esp32h2_split/README.md
@@ -0,0 +1,74 @@
+# RMK 
+
+RMK is a feature-rich and easy-to-use keyboard firmware.
+
+## Use the template
+
+To run this firmware, you should have latest Rust installed. The full instruction of installing esp Rust toolchain can be found [here](https://docs.esp-rs.org/book/installation/index.html).
+
+[`espflash`](https://github.com/esp-rs/espflash) should also be installed:
+
+```
+cargo install cargo-espflash espflash
+```
+
+After having everything installed, use the following command to run the split central:
+
+```
+cargo run --release --bin central
+```
+
+For peripheral, run
+
+```
+cargo run --release --bin peripheral
+```
+
+If everything is good, you'll see the log as the following:
+
+```shell
+cargo run --release --bin central
+    Compiling ...
+    ...
+    ...
+    Finished `release` profile [optimized + debuginfo] target(s) in 11.70s
+     Running `espflash flash --monitor --port /dev/cu.usbmodem211401 target/riscv32imac-unknown-none-elf/release/central`
+[2025-04-10T10:01:23Z INFO ] Serial port: '/dev/cu.usbmodem211401'
+[2025-04-10T10:01:23Z INFO ] Connecting...
+[2025-04-10T10:01:23Z INFO ] Using flash stub
+Chip type:         esp32h2 (revision v0.1)
+Crystal frequency: 32 MHz
+Flash size:        4MB
+Features:          BLE 5, IEEE 802.15.4
+MAC address:       40:4c:ca:5b:c7:dc
+App/part. size:    768,944/4,128,768 bytes, 18.62%
+[2025-04-10T10:01:23Z INFO ] Segment at address '0x0' has not changed, skipping write
+[2025-04-10T10:01:23Z INFO ] Segment at address '0x8000' has not changed, skipping write
+[00:00:06] [========================================]     411/411     0x10000                                                                                             [2025-04-10T10:01:31Z INFO ] Flashing has completed!
+```
+
+If espflash reports the following error:
+
+```
+Error: espflash::connection_failed
+
+  × Error while connecting to device
+  ╰─▶ Serial port not found
+```
+
+You should to identify which serial port are connected to your esp board, and use `--port` to specify the used serial port:
+
+```
+# Suppose that the esp board are connected to /dev/cu.usbmodem211401
+cargo run --release --bin central -- --port /dev/cu.usbmodem211401
+```
+
+If you want to get some insight of segments of your binary, [`espsegs`](https://github.com/bjoernQ/espsegs) would help:
+
+```
+# Install it first
+cargo install --git https://github.com/bjoernQ/espsegs
+
+# Check all segments
+espsegs target/riscv32imac-unknown-none-elf/release/central --chip esp32h2
+```
\ No newline at end of file
diff --git a/esp32h2_split/build.rs b/esp32h2_split/build.rs
new file mode 100644
index 0000000..147d1e0
--- /dev/null
+++ b/esp32h2_split/build.rs
@@ -0,0 +1,49 @@
+use std::fs::File;
+use std::io::Read;
+use std::path::Path;
+use std::{env, fs};
+
+use const_gen::*;
+use xz2::read::XzEncoder;
+
+fn main() {
+    println!("cargo:rerun-if-changed=keyboard.toml");
+
+    // Generate vial config at the root of project
+    println!("cargo:rerun-if-changed=vial.json");
+    generate_vial_config();
+
+    println!("cargo:rustc-link-arg-bins=-Tlinkall.x");
+
+    // Set the extra linker script from defmt
+    // println!("cargo:rustc-link-arg=-Tdefmt.x");
+}
+
+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/esp32h2_split/keyboard.toml b/esp32h2_split/keyboard.toml
new file mode 100644
index 0000000..701ca5b
--- /dev/null
+++ b/esp32h2_split/keyboard.toml
@@ -0,0 +1,59 @@
+[keyboard]
+name = "{{ project_name }}"
+product_name = "{{ project_name }}"
+vendor_id = 0x4c4b
+product_id = 0x4643
+manufacturer = "RMK"
+chip = "esp32h2"
+usb_enable = false
+
+[layout]
+rows = 4
+cols = 3
+layers = 2
+keymap = [
+    [
+        ["A", "B", "C"],
+        ["Kc1", "Kc2", "Kc3"],
+        ["LCtrl", "MO(1)", "LShift"],
+        ["OSL(1)", "LT(2, Kc9)", "LM(1, LShift | LGui)"]
+    ],
+    [
+        ["_", "TT(1)", "TG(2)"],
+        ["_", "_", "_"],
+        ["_", "_", "_"],
+        ["_", "_", "_"]
+    ],
+]
+
+[split]
+connection = "ble"
+
+[split.central]
+rows = 2
+cols = 2
+row_offset = 0
+col_offset = 0
+
+[split.central.matrix]
+# Note: esp32h2 exposes GPIO0-15 and GPIO22-27 (GPIO16-21 don't exist)
+row_pins = ["GPIO6", "GPIO7"]
+col_pins = ["GPIO3", "GPIO4"]
+# RMK uses col2row as the default matrix diode direction, if you want to use a row2col matrix, add `row2col = true`
+# row2col = true
+
+[[split.peripheral]]
+rows = 2
+cols = 1
+row_offset = 2
+col_offset = 2
+
+[split.peripheral.matrix]
+row_pins = ["GPIO6", "GPIO7"]
+col_pins = ["GPIO3"]
+
+[ble]
+enabled = true
+
+[rmk]
+split_peripherals_num = 1
\ No newline at end of file
diff --git a/esp32h2_split/rust-toolchain.toml b/esp32h2_split/rust-toolchain.toml
new file mode 100644
index 0000000..e11abcb
--- /dev/null
+++ b/esp32h2_split/rust-toolchain.toml
@@ -0,0 +1,6 @@
+[toolchain]
+channel = "stable"
+components = ["rust-src", "rustfmt", "llvm-tools"]
+targets = [
+    "riscv32imac-unknown-none-elf",
+]
diff --git a/esp32h2_split/src/central.rs b/esp32h2_split/src/central.rs
new file mode 100644
index 0000000..db41ba4
--- /dev/null
+++ b/esp32h2_split/src/central.rs
@@ -0,0 +1,7 @@
+#![no_main]
+#![no_std]
+
+use rmk::macros::rmk_central;
+
+#[rmk_central]
+mod keyboard_central {}
diff --git a/esp32h2_split/src/peripheral.rs b/esp32h2_split/src/peripheral.rs
new file mode 100644
index 0000000..36c4a32
--- /dev/null
+++ b/esp32h2_split/src/peripheral.rs
@@ -0,0 +1,7 @@
+#![no_main]
+#![no_std]
+
+use rmk::macros::rmk_peripheral;
+
+#[rmk_peripheral(id = 0)]
+mod keyboard_peripheral {}
diff --git a/esp32h2_split/vial.json b/esp32h2_split/vial.json
new file mode 100644
index 0000000..809c81f
--- /dev/null
+++ b/esp32h2_split/vial.json
@@ -0,0 +1,74 @@
+{
+    "name": "{{ project_name }}",
+    "vendorId": "0x4C4B",
+    "productId": "0x4643",
+    "lighting": "none",
+    "matrix": {
+        "rows": 4,
+        "cols": 3
+    },
+    "customKeycodes": [
+        {
+            "name": "BT0",
+            "title": "Bluetooth Channel 0",
+            "shortName": "BT0"
+        },
+        {
+            "name": "BT1",
+            "title": "Bluetooth Channel 1",
+            "shortName": "BT1"
+        },
+        {
+            "name": "BT2",
+            "title": "Bluetooth Channel 2",
+            "shortName": "BT2"
+        },
+        {
+            "name": "NEXT_BT",
+            "title": "Switch to the next Bluetooth channel",
+            "shortName": "Next\nBT"
+        },
+        {
+            "name": "PREV_BT",
+            "title": "Switch to the previous Bluetooth channel",
+            "shortName": "Prev\nBT"
+        },
+        {
+            "name": "CLR_BT",
+            "title": "Clear bond info for current channel",
+            "shortName": "Clear\nBT"
+        },
+        {
+            "name": "SWITCH",
+            "title": "Switch default output mode between USB/BLE",
+            "shortName": "Switch\nOutput"
+        }
+    ],
+    "layouts": {
+        "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