Merge cfd5e7cfab into 359778967f

Makefile

@@ -8,7 +8,7 @@ VERSION := 0.4.8
 PROMETHEUS_TAG := github.com/prometheus/common/version
 KVM_PKG_NAME := github.com/jetkvm/kvm
 
-GO_BUILD_ARGS := -tags netgo -tags timetzdata
+GO_BUILD_ARGS := -tags netgo,timetzdata,nomsgpack
 GO_RELEASE_BUILD_ARGS := -trimpath $(GO_BUILD_ARGS)
 GO_LDFLAGS := \
   -s -w \

jsonrpc.go

@@ -758,6 +758,8 @@ func rpcSetActiveExtension(extensionId string) error {
 		_ = unmountATXControl()
 	case "dc-power":
 		_ = unmountDCControl()
+	case "serial-buttons":
+		_ = unmountSerialButtons()
 	}
 	config.ActiveExtension = extensionId
 	if err := SaveConfig(); err != nil {
@@ -768,6 +770,8 @@ func rpcSetActiveExtension(extensionId string) error {
 		_ = mountATXControl()
 	case "dc-power":
 		_ = mountDCControl()
+	case "serial-buttons":
+		_ = mountSerialButtons()
 	}
 	return nil
 }
@@ -802,6 +806,15 @@ func rpcGetATXState() (ATXState, error) {
 	return state, nil
 }
 
+func rpcSendCustomCommand(command string) error {
+	logger.Debug().Str("Command", command).Msg("JSONRPC: Sending custom serial command")
+	err := sendCustomCommand(command)
+	if err != nil {
+		return fmt.Errorf("failed to send custom command in jsonrpc: %w", err)
+	}
+	return nil
+}
+
 type SerialSettings struct {
 	BaudRate string `json:"baudRate"`
 	DataBits string `json:"dataBits"`
@@ -893,6 +906,64 @@ func rpcSetSerialSettings(settings SerialSettings) error {
 	return nil
 }
 
+type QuickButton struct {
+	Id      string `json:"id"`      // uuid-ish
+	Label   string `json:"label"`   // shown on the button
+	Command string `json:"command"` // raw command to send (without auto-terminator)
+	Sort    int    `json:"sort"`    // for stable ordering
+}
+
+type SerialButtonConfig struct {
+	Buttons            []QuickButton `json:"buttons"`            // slice of QuickButton
+	Terminator         string        `json:"terminator"`         // CR/CRLF/None
+	HideSerialSettings bool          `json:"hideSerialSettings"` // lowercase `bool`
+	HideSerialResponse bool          `json:"hideSerialResponse"` // lowercase `bool`
+}
+
+func rpcGetSerialButtonConfig() (SerialButtonConfig, error) {
+	config := SerialButtonConfig{
+		Buttons:            []QuickButton{},
+		Terminator:         "\r",
+		HideSerialSettings: false,
+		HideSerialResponse: true,
+	}
+
+	file, err := os.Open("/userdata/serialButtons_config.json")
+	if err != nil {
+		logger.Debug().Msg("SerialButtons config file doesn't exist, using default")
+		return config, nil
+	}
+	defer file.Close()
+
+	// load and merge the default config with the user config
+	var loadedConfig SerialButtonConfig
+	if err := json.NewDecoder(file).Decode(&loadedConfig); err != nil {
+		logger.Warn().Err(err).Msg("SerialButtons config file JSON parsing failed")
+		return config, nil
+	}
+
+	return loadedConfig, nil
+}
+
+func rpcSetSerialButtonConfig(config SerialButtonConfig) error {
+
+	logger.Trace().Str("path", "/userdata/serialButtons_config.json").Msg("Saving config")
+
+	file, err := os.Create("/userdata/serialButtons_config.json")
+	if err != nil {
+		return fmt.Errorf("failed to create SerialButtons config file: %w", err)
+	}
+	defer file.Close()
+
+	encoder := json.NewEncoder(file)
+	encoder.SetIndent("", "  ")
+	if err := encoder.Encode(config); err != nil {
+		return fmt.Errorf("failed to encode SerialButtons config: %w", err)
+	}
+
+	return nil
+}
+
 func rpcGetUsbDevices() (usbgadget.Devices, error) {
 	return *config.UsbDevices, nil
 }
@@ -1240,8 +1311,11 @@ var rpcHandlers = map[string]RPCHandler{
 	"setActiveExtension":     {Func: rpcSetActiveExtension, Params: []string{"extensionId"}},
 	"getATXState":            {Func: rpcGetATXState},
 	"setATXPowerAction":      {Func: rpcSetATXPowerAction, Params: []string{"action"}},
+	"sendCustomCommand":      {Func: rpcSendCustomCommand, Params: []string{"command"}},
 	"getSerialSettings":      {Func: rpcGetSerialSettings},
 	"setSerialSettings":      {Func: rpcSetSerialSettings, Params: []string{"settings"}},
+	"getSerialButtonConfig":  {Func: rpcGetSerialButtonConfig},
+	"setSerialButtonConfig":  {Func: rpcSetSerialButtonConfig, Params: []string{"config"}},
 	"getUsbDevices":          {Func: rpcGetUsbDevices},
 	"setUsbDevices":          {Func: rpcSetUsbDevices, Params: []string{"devices"}},
 	"setUsbDeviceState":      {Func: rpcSetUsbDeviceState, Params: []string{"device", "enabled"}},

serial.go

@@ -2,6 +2,7 @@ package kvm
 
 import (
 	"bufio"
+	"encoding/base64"
 	"io"
 	"strconv"
 	"strings"
@@ -251,6 +252,83 @@ func setDCRestoreState(state int) error {
 	return nil
 }
 
+func mountSerialButtons() error {
+	_ = port.SetMode(defaultMode)
+	startSerialButtonsRxLoop(currentSession)
+	return nil
+}
+
+func unmountSerialButtons() error {
+	stopSerialButtonsRxLoop()
+	_ = reopenSerialPort()
+	return nil
+}
+
+// ---- Serial Buttons RX fan-out (JSON-RPC events) ----
+var serialButtonsRXStopCh chan struct{}
+
+func startSerialButtonsRxLoop(session *Session) {
+	scopedLogger := serialLogger.With().Str("service", "custom_buttons_rx").Logger()
+	scopedLogger.Debug().Msg("Attempting to start RX reader.")
+	// Stop previous loop if running
+	if serialButtonsRXStopCh != nil {
+		close(serialButtonsRXStopCh)
+	}
+	serialButtonsRXStopCh = make(chan struct{})
+
+	go func() {
+		buf := make([]byte, 4096)
+		scopedLogger.Debug().Msg("Starting loop")
+
+		for {
+			select {
+			case <-serialButtonsRXStopCh:
+				return
+			default:
+				n, err := port.Read(buf)
+				if err != nil {
+					if err != io.EOF {
+						scopedLogger.Debug().Err(err).Msg("serial RX read error")
+					}
+					time.Sleep(50 * time.Millisecond)
+					continue
+				}
+				if n == 0 || currentSession == nil {
+					continue
+				}
+				// Safe for any bytes: wrap in Base64
+				b64 := base64.StdEncoding.EncodeToString(buf[:n])
+				writeJSONRPCEvent("serial.rx", map[string]any{
+					"base64": b64,
+				}, currentSession)
+			}
+		}
+	}()
+}
+
+func stopSerialButtonsRxLoop() {
+	if serialButtonsRXStopCh != nil {
+		close(serialButtonsRXStopCh)
+		serialButtonsRXStopCh = nil
+	}
+}
+
+func sendCustomCommand(command string) error {
+	scopedLogger := serialLogger.With().Str("service", "custom_buttons_tx").Logger()
+	scopedLogger.Info().Str("Command", command).Msg("Sending custom command.")
+	_, err := port.Write([]byte("\n"))
+	if err != nil {
+		scopedLogger.Warn().Err(err).Msg("Failed to send serial output \\n")
+		return err
+	}
+	_, err = port.Write([]byte(command))
+	if err != nil {
+		scopedLogger.Warn().Err(err).Str("line", command).Msg("Failed to send serial output")
+		return err
+	}
+	return nil
+}
+
 var defaultMode = &serial.Mode{
 	BaudRate: 115200,
 	DataBits: 8,

ui/src/components/extensions/SerialButtons.tsx

@@ -0,0 +1,494 @@
+import { LuPlus, LuTrash2, LuPencil, LuSettings2, LuEye, LuEyeOff, LuSave, LuArrowBigUp, LuArrowBigDown, LuCirclePause, LuCirclePlay } from "react-icons/lu";
+import { useEffect, useMemo, useRef, useState } from "react";
+
+import { Button } from "@components/Button";
+import Card from "@components/Card";
+import { SettingsPageHeader } from "@components/SettingsPageheader";
+import { JsonRpcResponse, useJsonRpc } from "@/hooks/useJsonRpc";
+import notifications from "@/notifications";
+import { SelectMenuBasic } from "@components/SelectMenuBasic";
+import { InputFieldWithLabel } from "@components/InputField";
+import { TextAreaWithLabel } from "@components/TextArea";
+
+/** ============== Types ============== */
+
+interface SerialSettings {
+  baudRate: string;
+  dataBits: string;
+  stopBits: string;
+  parity: string;
+}
+
+interface QuickButton {
+  id: string;         // uuid-ish
+  label: string;      // shown on the button
+  command: string;    // raw command to send (without auto-terminator)
+  sort: number;       // for stable ordering
+}
+
+interface ButtonConfig {
+  buttons: QuickButton[];
+  terminator: string;   // CR/CRLF/None
+  hideSerialSettings: boolean;
+  hideSerialResponse: boolean;
+}
+
+/** ============== Component ============== */
+
+export function SerialButtons() {
+  // This will receive all JSON-RPC notifications (method + no id)
+  const { send } = useJsonRpc((payload) => {
+    if (payload.method !== "serial.rx") return;
+    if (paused) return;
+
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    const p = payload.params as any;
+    let chunk = "";
+
+    if (typeof p?.base64 === "string") {
+      try {
+        chunk = atob(p.base64);
+      } catch {
+        // ignore malformed base64
+      }
+    } else if (typeof p?.data === "string") {
+      // fallback if you ever send plain text
+      chunk = p.data;
+    }
+
+    if (!chunk) return;
+
+    // Normalize CRLF for display
+    chunk = chunk.replace(/\r\n/g, "\n");
+
+    setSerialResponse(prev => (prev + chunk).slice(-MAX_CHARS));
+  });
+
+
+  const MAX_CHARS = 50_000;
+
+  // serial settings (same as SerialConsole)
+  const [serialSettings, setSerialSettings] = useState<SerialSettings>({
+    baudRate: "9600",
+    dataBits: "8",
+    stopBits: "1",
+    parity: "none",
+  });
+
+  // extension config (buttons + prefs)
+  const [buttonConfig, setButtonConfig] = useState<ButtonConfig>({
+  buttons: [],
+  terminator: "",
+  hideSerialSettings: false,
+  hideSerialResponse: true,
+});
+
+  // editor modal state
+  const [editorOpen, setEditorOpen] = useState<null | { id?: string }>(null);
+  const [draftLabel, setDraftLabel] = useState("");
+  const [draftCmd, setDraftCmd] = useState("");
+  const [serialResponse, setSerialResponse] = useState("");
+  const [paused, setPaused] = useState(false);
+  const taRef = useRef<HTMLTextAreaElement>(null);
+
+  // load serial settings like SerialConsole
+  useEffect(() => {
+    send("getSerialSettings", {}, (resp: JsonRpcResponse) => {
+      if ("error" in resp) {
+        notifications.error(
+          `Failed to get serial settings: ${resp.error.data || "Unknown error"}`,
+        );
+        return;
+      }
+      setSerialSettings(resp.result as SerialSettings);
+    });
+
+    send("getSerialButtonConfig", {}, (resp: JsonRpcResponse) => {
+      if ("error" in resp) {
+        notifications.error(
+          `Failed to get button config: ${resp.error.data || "Unknown error"}`,
+        );
+        return;
+      }
+
+      setButtonConfig(resp.result as ButtonConfig);
+    });
+
+  });
+
+  const handleSerialSettingChange = (setting: keyof SerialSettings, value: string) => {
+    const newSettings = { ...serialSettings, [setting]: value };
+    send("setSerialSettings", { settings: newSettings }, (resp: JsonRpcResponse) => {
+      if ("error" in resp) {
+        notifications.error(`Failed to update serial settings: ${resp.error.data || "Unknown error"}`);
+        return;
+      }
+      setSerialSettings(newSettings);
+    });
+  };
+
+  const handleSerialButtonConfigChange = (config: keyof ButtonConfig, value: unknown) => {
+    const newButtonConfig = { ...buttonConfig, [config]: value };
+    send("setSerialButtonConfig", { config: newButtonConfig }, (resp: JsonRpcResponse) => {
+      if ("error" in resp) {
+        notifications.error(`Failed to update button config: ${resp.error.data || "Unknown error"}`);
+        return;
+      }
+      setButtonConfig(newButtonConfig);
+    });
+    setButtonConfig(newButtonConfig);
+  };
+
+  useEffect(() => {
+    if (buttonConfig.hideSerialResponse) return;
+    const el = taRef.current;
+    if (el) el.scrollTop = el.scrollHeight;
+  }, [serialResponse, buttonConfig.hideSerialResponse]);
+
+  const onClickButton = (btn: QuickButton) => {
+
+    /** build final string to send:
+     *  if the user's button command already contains a terminator, we don't append the selected terminator safely
+     */
+    const raw = btn.command;
+    const t = buttonConfig.terminator ?? "";
+    const command = raw.endsWith("\r") || raw.endsWith("\n") ? raw : raw + t;
+
+    send("sendCustomCommand", { command }, (resp: JsonRpcResponse) => {
+      if ("error" in resp) {
+        notifications.error(
+          `Failed to send ATX power action: ${resp.error.data || "Unknown error"}`,
+        );
+      }
+    });
+
+  };
+
+  /** CRUD helpers */
+  const addNew = () => {
+    setEditorOpen({ id: undefined });
+    setDraftLabel("");
+    setDraftCmd("");
+  };
+
+  const editBtn = (btn: QuickButton) => {
+    setEditorOpen({ id: btn.id });
+    setDraftLabel(btn.label);
+    setDraftCmd(btn.command);
+  };
+
+  const removeBtn = (id: string) => {
+    const nextButtons = buttonConfig.buttons.filter(b => b.id !== id).map((b, i) => ({ ...b, sort: i })) ;
+    handleSerialButtonConfigChange("buttons", stableSort(nextButtons) );
+    setEditorOpen(null);
+  };
+
+  const moveUpBtn = (id: string) => {
+    // Make a copy so we don't mutate state directly
+    const newButtons = [...buttonConfig.buttons];
+
+    // Find the index of the button to move
+    const index = newButtons.findIndex(b => b.id === id);
+
+    if (index > 0) {
+      // Swap with the previous element
+      [newButtons[index - 1], newButtons[index]] = [
+        newButtons[index],
+        newButtons[index - 1],
+      ];
+    }
+
+    // Re-assign sort values
+    const nextButtons = newButtons.map((b, i) => ({ ...b, sort: i }));
+    handleSerialButtonConfigChange("buttons", stableSort(nextButtons) );
+    setEditorOpen(null);
+  };
+
+  const moveDownBtn = (id: string) => {
+    // Make a copy so we don't mutate state directly
+    const newButtons = [...buttonConfig.buttons];
+
+    // Find the index of the button to move
+    const index = newButtons.findIndex(b => b.id === id);
+
+    if (index >= 0 && index < newButtons.length - 1) {
+      // Swap with the next element
+      [newButtons[index], newButtons[index + 1]] = [
+        newButtons[index + 1],
+        newButtons[index],
+      ];
+    }
+
+    // Re-assign sort values
+    const nextButtons = newButtons.map((b, i) => ({ ...b, sort: i }));
+    handleSerialButtonConfigChange("buttons", stableSort(nextButtons) );
+    setEditorOpen(null);
+  };
+
+  const saveDraft = () => {
+    const label = draftLabel.trim() || "Unnamed";
+    const command = draftCmd.trim();
+    if (!command) {
+      notifications.error("Command cannot be empty.");
+      return;
+    }
+
+    const isEdit = editorOpen?.id;
+    const nextButtons = isEdit
+      ? buttonConfig.buttons.map(b => (b.id === isEdit ? { ...b, label, command } : b))
+      : [...buttonConfig.buttons, { id: genId(), label, command, sort: buttonConfig.buttons.length }];
+
+    handleSerialButtonConfigChange("buttons", stableSort(nextButtons) );
+    setEditorOpen(null);
+  };
+
+  /** simple reordering: alphabetical by sort, then label */
+  const sortedButtons = useMemo(() => stableSort(buttonConfig.buttons), [buttonConfig.buttons]);
+
+  return (
+    <div className="space-y-4">
+      <SettingsPageHeader
+        title="Serial Buttons"
+        description="Quick custom commands over the extension serial port"
+      />
+
+      <Card className="animate-fadeIn opacity-0">
+        <div className="space-y-4 p-3">
+          {/* Top actions */}
+          <div className="flex flex-wrap justify-around items-center gap-3">
+            <Button
+              size="SM"
+              theme="primary"
+              LeadingIcon={buttonConfig.hideSerialSettings ? LuEye : LuEyeOff}
+              text={buttonConfig.hideSerialSettings ? "Show Settings" : "Hide Settings"}
+              onClick={() => handleSerialButtonConfigChange("hideSerialSettings", !buttonConfig.hideSerialSettings )}
+            />
+            <Button
+              size="SM"
+              theme="primary"
+              LeadingIcon={LuPlus}
+              text="Add Button"
+              onClick={addNew}
+            />
+            <Button
+              size="SM"
+              theme="primary"
+              LeadingIcon={buttonConfig.hideSerialResponse ? LuEye : LuEyeOff}
+              text={buttonConfig.hideSerialResponse ? "View RX" : "Hide RX"}
+              onClick={() => handleSerialButtonConfigChange("hideSerialResponse", !buttonConfig.hideSerialResponse )}
+            />
+          </div>
+          <hr className="border-slate-700/30 dark:border-slate-600/30" />
+
+          {/* Serial settings (collapsible) */}
+          {!buttonConfig.hideSerialSettings && (
+            <>
+              <div className="grid grid-cols-2 gap-4">
+                <SelectMenuBasic
+                  label="Baud Rate"
+                  options={[
+                    { label: "1200", value: "1200" },
+                    { label: "2400", value: "2400" },
+                    { label: "4800", value: "4800" },
+                    { label: "9600", value: "9600" },
+                    { label: "19200", value: "19200" },
+                    { label: "38400", value: "38400" },
+                    { label: "57600", value: "57600" },
+                    { label: "115200", value: "115200" },
+                  ]}
+                  value={serialSettings.baudRate}
+                  onChange={(e) => handleSerialSettingChange("baudRate", e.target.value)}
+                />
+
+                <SelectMenuBasic
+                  label="Data Bits"
+                  options={[
+                    { label: "8", value: "8" },
+                    { label: "7", value: "7" },
+                  ]}
+                  value={serialSettings.dataBits}
+                  onChange={(e) => handleSerialSettingChange("dataBits", e.target.value)}
+                />
+
+                <SelectMenuBasic
+                  label="Stop Bits"
+                  options={[
+                    { label: "1", value: "1" },
+                    { label: "1.5", value: "1.5" },
+                    { label: "2", value: "2" },
+                  ]}
+                  value={serialSettings.stopBits}
+                  onChange={(e) => handleSerialSettingChange("stopBits", e.target.value)}
+                />
+
+                <SelectMenuBasic
+                  label="Parity"
+                  options={[
+                    { label: "None", value: "none" },
+                    { label: "Even", value: "even" },
+                    { label: "Odd", value: "odd" },
+                  ]}
+                  value={serialSettings.parity}
+                  onChange={(e) => handleSerialSettingChange("parity", e.target.value)}
+                />
+              </div>
+              <SelectMenuBasic
+                  label="Line ending"
+                  options={[
+                    { label: "None", value: "" },
+                    { label: "CR (\\r)", value: "\r" },
+                    { label: "CRLF (\\r\\n)", value: "\r\n" },
+                  ]}
+                  value={buttonConfig.terminator}
+                  onChange={(e) => handleSerialButtonConfigChange("terminator", e.target.value)}
+                />
+              <hr className="border-slate-700/30 dark:border-slate-600/30" />
+            </>
+          )}
+
+          {/* Buttons grid */}
+          <div className="grid grid-cols-2 gap-2 pt-2">
+            {sortedButtons.map((btn) => (
+              <div key={btn.id} className="flex items-stretch gap-2 min-w-0">
+                <div className=" flex-1  min-w-0 ">
+                  <Button
+                    size="MD"
+                    fullWidth
+                    className="overflow-hidden text-ellipsis whitespace-nowrap"
+                    theme="primary"
+                    text={btn.label}
+                    onClick={() => onClickButton(btn)}
+                  />
+                </div>
+                <Button
+                  size="MD"
+                  theme="light"
+                  className="shrink-0"
+                  LeadingIcon={LuPencil}
+                  onClick={() => editBtn(btn)}
+                  aria-label={`Edit ${btn.label}`}
+                />
+              </div>
+            ))}
+            {sortedButtons.length === 0 && (
+              <div className="col-span-2 text-sm text-black dark:text-slate-300">No buttons yet. Click “Add Button”.</div>
+            )}
+          </div>
+
+          {/* Editor drawer/modal (inline lightweight) */}
+          {editorOpen && (
+            <div className="mt-4 border rounded-md p-3 bg-slate-50 dark:bg-slate-900/30">
+              <div className="flex items-center gap-2 mb-2">
+                <LuSettings2 className="h-3.5 text-white shrink-0 justify-start" />
+                <div className="font-medium text-black dark:text-white">{editorOpen.id ? "Edit Button" : "New Button"}</div>
+              </div>
+              <div className="grid grid-cols-1 md:grid-cols-2 gap-3">
+                <div>
+                  <InputFieldWithLabel
+                    size="SM"
+                    type="text"
+                    label="Label"
+                    placeholder="New Command"
+                    value={draftLabel}
+                    onChange={e => {
+                      setDraftLabel(e.target.value);
+                    }}
+                  />
+                </div>
+                <div>
+                  <InputFieldWithLabel
+                    size="SM"
+                    type="text"
+                    label="Command"
+                    placeholder="Command to send"
+                    value={draftCmd}
+                    onChange={e => {
+                      setDraftCmd(e.target.value);
+                    }}
+                  />
+                  {buttonConfig.terminator != "" && (
+                    <div className="text-xs text-white opacity-70 mt-1">
+                    The selected line ending ({pretty(buttonConfig.terminator)}) will be appended when sent.
+                  </div>
+                  )}
+                </div>
+              </div>
+              <div className="flex gap-2 mt-3">
+                <Button size="SM" theme="primary" LeadingIcon={LuSave} text="Save" onClick={saveDraft} />
+                <Button size="SM" theme="primary" text="Cancel" onClick={() => setEditorOpen(null)} />
+                {editorOpen.id && (
+                  <>
+                    <Button
+                      size="SM"
+                      theme="danger"
+                      LeadingIcon={LuTrash2}
+                      text="Delete"
+                      onClick={() => removeBtn(editorOpen.id!)}
+                      aria-label={`Delete ${draftLabel}`}
+                    />
+                    <Button
+                      size="SM"
+                      theme="primary"
+                      LeadingIcon={LuArrowBigUp}
+                      onClick={() => moveUpBtn(editorOpen.id!)}
+                    />
+                    <Button
+                      size="SM"
+                      theme="primary"
+                      LeadingIcon={LuArrowBigDown}
+                      onClick={() => moveDownBtn(editorOpen.id!)}
+                    />
+                  </>
+                )}
+              </div>
+            </div>
+          )}
+          {/* Serial response (collapsible) */}
+          {!buttonConfig.hideSerialResponse && (
+            <>
+              <hr className="border-slate-700/30 dark:border-slate-600/30" />
+              <TextAreaWithLabel
+                ref={taRef}
+                readOnly
+                label="RX response from serial connection"
+                value={serialResponse|| ""}
+                rows={3}
+                onChange={e => setSerialResponse(e.target.value)}
+                placeholder="Will show the response recieved from the serial port."
+              />
+              <div className="flex items-center gap-2">
+                <Button
+                  size="XS"
+                  theme="primary"
+                  text={paused ? "Resume" : "Pause"}
+                  LeadingIcon={paused ? LuCirclePlay : LuCirclePause}
+                  onClick={() => setPaused(p => !p)}
+                />
+                <Button
+                  size="XS"
+                  theme="primary"
+                  text="Clear"
+                  LeadingIcon={LuTrash2}
+                  onClick={() => setSerialResponse("")}
+                />
+              </div>
+            </>
+          )}
+        </div>
+      </Card>
+    </div>
+  );
+}
+
+/** ============== helpers ============== */
+
+function pretty(s: string) {
+  return s.replace(/\r/g, "\\r").replace(/\n/g, "\\n");
+}
+function genId() {
+  return "b_" + Math.random().toString(36).slice(2, 10);
+}
+function stableSort(arr: QuickButton[]) {
+  return [...arr].sort((a, b) => (a.sort - b.sort) || a.label.localeCompare(b.label));
+}
+

ui/src/components/popovers/ExtensionPopover.tsx

@@ -7,6 +7,7 @@ import { SettingsPageHeader } from "@components/SettingsPageheader";
 import { ATXPowerControl } from "@components/extensions/ATXPowerControl";
 import { DCPowerControl } from "@components/extensions/DCPowerControl";
 import { SerialConsole } from "@components/extensions/SerialConsole";
+import { SerialButtons } from "@components/extensions/SerialButtons";
 import { Button } from "@components/Button";
 import notifications from "@/notifications";
 
@@ -36,6 +37,12 @@ const AVAILABLE_EXTENSIONS: Extension[] = [
     description: "Access your serial console extension",
     icon: LuTerminal,
   },
+  {
+    id: "serial-buttons",
+    name: "Serial Buttons",
+    description: "Send custom serial signals by buttons",
+    icon: LuTerminal,
+  },
 ];
 
 export default function ExtensionPopover() {
@@ -76,6 +83,8 @@ export default function ExtensionPopover() {
         return <DCPowerControl />;
       case "serial-console":
         return <SerialConsole />;
+      case "serial-buttons":
+        return <SerialButtons />;
       default:
         return null;
     }