feat: add XIAO nRF52840 Sense firmware source

.changepacks/changepack_log_NrfutilCiFix.json

@@ -0,0 +1,5 @@
+{
+  "changes": {},
+  "note": "fix(ci): install pinned adafruit-nrfutil through the existing cached requirements in validation and publishing, verify CLI availability before Seeeduino nRF52 compilation, and trigger publishing on dependency changes.",
+  "date": "2026-09-11T06:26:20.000Z"
+}

.github/firmware-toolchain.json

@@ -2,6 +2,7 @@
   "schemaVersion": 1,
   "arduinoCli": "1.5.1",
   "platforms": {
-    "arduino:avr": "1.8.8"
+    "arduino:avr": "1.8.8",
+    "Seeeduino:nrf52": "1.1.13"
   }
 }

.github/workflows/publish-firmware.yml

@@ -11,6 +11,7 @@ on:
       - "boards/*.png"
       - "schemas/**"
       - "scripts/firmware.py"
+      - "requirements-dev.txt"
       - "sources/boards/**"
   workflow_dispatch:
 
@@ -49,10 +50,14 @@ jobs:
       - name: Install validation dependencies
         run: python -m pip install --requirement requirements-dev.txt
 
+      - name: Verify nRF52 packaging tool
+        run: adafruit-nrfutil version
+
       - name: Install locked Arduino platform
         run: |
           arduino-cli core update-index
           arduino-cli core install arduino:avr@1.8.8
+          arduino-cli core install Seeeduino:nrf52@1.1.13 --additional-urls https://files.seeedstudio.com/arduino/package_seeeduino_boards_index.json
 
       - name: Test publisher
         run: python -m unittest -v tests.test_firmware

.github/workflows/validate.yml

@@ -33,10 +33,14 @@ jobs:
       - name: Install validation dependencies
         run: python -m pip install --requirement requirements-dev.txt
 
+      - name: Verify nRF52 packaging tool
+        run: adafruit-nrfutil version
+
       - name: Install locked Arduino platform
         run: |
           arduino-cli core update-index
           arduino-cli core install arduino:avr@1.8.8
+          arduino-cli core install Seeeduino:nrf52@1.1.13 --additional-urls https://files.seeedstudio.com/arduino/package_seeeduino_boards_index.json
 
       - name: Run unit tests
         run: python -m unittest -v tests.test_firmware

boards/seeed-xiao-nrf52840-sense.ino

@@ -0,0 +1,98 @@
+// Hanbeon Bluetooth switch firmware for Seeed XIAO nRF52840 Sense.
+//
+// Reports one P record per stable press and one R record per stable release
+// over both USB CDC and Nordic UART Service. A USB bridge can send HELLO,
+// FLASH, OFF, or BOOT; the latter enters the serial DFU bootloader.
+
+const byte buttonPin = 2;
+const byte ledPin = 9;
+const unsigned long debounceMs = 30;
+const unsigned long flashMs = 120;
+
+int lastRawReading = HIGH;
+int stableState = HIGH;
+unsigned long lastChangeMs = 0;
+unsigned long flashUntilMs = 0;
+String command;
+bool commandHadCarriageReturn = false;
+
+#ifdef USE_TINYUSB
+#include <Adafruit_TinyUSB.h>
+#include <Adafruit_TinyUSB_API.h>
+#endif
+
+#include <bluefruit.h>
+
+BLEUart bleuart;
+
+void sendLine(const char* line) {
+  Serial.print(line);
+  if (bleuart.notifyEnabled()) bleuart.print(line);
+}
+
+void enterBootloader() {
+  sendLine("BOOT_ENTER\n");
+  Serial.flush();
+  delay(100);
+#ifdef USE_TINYUSB
+  TinyUSB_Port_EnterDFU();
+#endif
+}
+
+void setup() {
+  pinMode(buttonPin, INPUT_PULLUP);
+  pinMode(ledPin, OUTPUT);
+  digitalWrite(ledPin, LOW);
+  Serial.begin(115200);
+
+  Bluefruit.autoConnLed(false);
+  Bluefruit.begin();
+  Bluefruit.setName("HanBeon XIAO");
+  bleuart.begin();
+  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
+  Bluefruit.Advertising.addTxPower();
+  Bluefruit.Advertising.addService(bleuart);
+  Bluefruit.Advertising.start();
+}
+
+void loop() {
+  readBridgeCommands(Serial);
+  readBridgeCommands(bleuart);
+
+  const int rawReading = digitalRead(buttonPin);
+  if (rawReading != lastRawReading) {
+    lastChangeMs = millis();
+    lastRawReading = rawReading;
+  }
+  if (millis() - lastChangeMs >= debounceMs && rawReading != stableState) {
+    stableState = rawReading;
+    sendLine(stableState == LOW ? "P\n" : "R\n");
+  }
+
+  const bool buttonPressed = stableState == LOW;
+  const bool flashing = millis() < flashUntilMs;
+  digitalWrite(ledPin, buttonPressed || flashing ? HIGH : LOW);
+}
+
+void readBridgeCommands(Stream& stream) {
+  while (stream.available() > 0) {
+    const char next = static_cast<char>(stream.read());
+    if (next == '\n') {
+      if (command == "HELLO" && !commandHadCarriageReturn) {
+        sendLine("HANBEON_UNO_V1\n");
+      } else if (command == "FLASH") {
+        flashUntilMs = millis() + flashMs;
+      } else if (command == "OFF") {
+        flashUntilMs = 0;
+      } else if (command == "BOOT") {
+        enterBootloader();
+      }
+      command = "";
+      commandHadCarriageReturn = false;
+    } else if (next == '\r') {
+      commandHadCarriageReturn = true;
+    } else {
+      command += next;
+    }
+  }
+}

requirements-dev.txt

@@ -1 +1,3 @@
 jsonschema==4.26.0
+# Linux DFU packaging tool required by Seeeduino:nrf52's compile recipe.
+adafruit-nrfutil==0.5.3.post16

sources/boards/seeed-xiao-nrf52840-sense.json

@@ -0,0 +1,34 @@
+{
+  "schemaVersion": 1,
+  "id": "seeed.xiao-nrf52840-sense",
+  "name": "Seeed XIAO nRF52840 Sense",
+  "sketch": {
+    "path": "boards/seeed-xiao-nrf52840-sense.ino",
+    "fqbn": "Seeeduino:nrf52:xiaonRF52840Sense"
+  },
+  "detect": {
+    "usb": [
+      {
+        "vid": "2886",
+        "pid": "8045",
+        "confidence": "exact",
+        "manufacturerAliases": ["Seeed Studio"],
+        "productAliases": ["XIAO nRF52840 Sense"]
+      },
+      {
+        "vid": "2886",
+        "pid": "0045",
+        "confidence": "exact",
+        "manufacturerAliases": ["Seeed Studio"],
+        "productAliases": ["XIAO nRF52840 Sense"]
+      }
+    ]
+  },
+  "wiring": [
+    {
+      "from": "D2",
+      "to": "순간 누름 스위치 NO 단자",
+      "note": "스위치 COM 단자는 GND에 연결"
+    }
+  ]
+}