Add Switch Pro Controller NFC support

THIRD-PARTY-LICENSES

@@ -46,6 +46,76 @@ SOFTWARE.
 
 ================================================================================
 
+joycon-webhid
+https://github.com/aka256/joycon-webhid
+
+Switch Pro Controller NFC protocol implementation in
+src/lib/drivers/procon/ was informed by the joycon-webhid WebHID
+implementation.
+
+License: MIT
+
+Copyright (c) 2021 aka
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+================================================================================
+
+jc_toolkit
+https://github.com/CTCaer/jc_toolkit
+
+MCU and NFC command sequences in src/lib/drivers/procon/ were
+cross-referenced with jc_toolkit's Joy-Con protocol implementation.
+
+License: MIT
+
+Copyright (c) 2017 CTCaer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+================================================================================
+
+Nintendo_Switch_Reverse_Engineering
+https://github.com/dekuNukem/Nintendo_Switch_Reverse_Engineering
+
+HID report structures and MCU/NFC state machine documentation in
+src/lib/drivers/procon/ were referenced from dekuNukem's reverse
+engineering notes. No license specified in that repository.
+
+================================================================================
+
 AmiiboAPI
 https://github.com/N3evin/AmiiboAPI
 

src/hooks/use-connection.ts

@@ -6,6 +6,8 @@ import { HidTransport } from "@/lib/transport/hid-transport";
 import { GBxCartDriver } from "@/lib/drivers/gbxcart/gbxcart-driver";
 import { PowerSaveDriver } from "@/lib/drivers/powersave/powersave-driver";
 import { DEVICE_FILTERS } from "@/lib/drivers/powersave/powersave-commands";
+import { ProConDriver } from "@/lib/drivers/procon/procon-driver";
+import { DEVICE_FILTERS as PROCON_FILTERS } from "@/lib/drivers/procon/procon-commands";
 import type { DeviceDriver, DeviceInfo, Transport } from "@/lib/types";
 
 // ─── Device probing ──────────────────────────────────────────────────────
@@ -273,6 +275,38 @@ export function useConnection({ log, onReady }: UseConnectionOptions) {
           const info = await psDriver.initialize();
           log(`Connected: ${info.deviceName}`);
           finishConnect(psDriver, info, "POWERSAVE");
+          return;
+        } catch (e) {
+          log(`Auto-reconnect failed: ${(e as Error).message}`, "warn");
+        }
+      }
+
+      const pcDevice = devices.find((d) =>
+        PROCON_FILTERS.some(
+          (f) => f.vendorId === d.vendorId && f.productId === d.productId,
+        ),
+      );
+      if (pcDevice && !driverRef.current) {
+        log("Reconnecting to Pro Controller...");
+        try {
+          const transport = new HidTransport(PROCON_FILTERS);
+          const identity = await transport.connectWithDevice(pcDevice);
+          log(`HID device opened: ${identity.name}`);
+
+          transport.on("onDisconnect", () => {
+            log("Device disconnected", "warn");
+            handleDisconnect();
+          });
+
+          const pcDriver = new ProConDriver(
+            transport,
+            identity.raw as HIDDevice,
+          );
+          pcDriver.on("onLog", (msg, level) => log(msg, level));
+
+          const info = await pcDriver.initialize();
+          log(`Connected: ${info.deviceName}`);
+          finishConnect(pcDriver, info, "PROCON");
         } catch (e) {
           log(`Auto-reconnect failed: ${(e as Error).message}`, "warn");
         }
@@ -357,6 +391,36 @@ export function useConnection({ log, onReady }: UseConnectionOptions) {
             finishConnect(psDriver, info, deviceId);
             break;
           }
+
+          case "PROCON": {
+            const transport = new HidTransport(PROCON_FILTERS);
+            let identity;
+            if (authorized) {
+              log("Connecting...");
+              identity = await transport.connectWithDevice(
+                authorized as HIDDevice,
+              );
+            } else {
+              log("Requesting HID device...");
+              identity = await transport.connect();
+            }
+
+            transport.on("onDisconnect", () => {
+              log("Device disconnected", "warn");
+              handleDisconnect();
+            });
+
+            const pcDriver = new ProConDriver(
+              transport,
+              identity.raw as HIDDevice,
+            );
+            pcDriver.on("onLog", (msg, level) => log(msg, level));
+
+            const pcInfo = await pcDriver.initialize();
+            log(`Connected: ${pcInfo.deviceName}`);
+            finishConnect(pcDriver, pcInfo, deviceId);
+            break;
+          }
         }
       } catch (e) {
         const msg = (e as Error).message;

src/lib/core/devices.ts

@@ -37,4 +37,15 @@ export const DEVICES: Record<string, DeviceDef> = {
       "Datel NFC portal. Also supports MaxLander/NaMiio clones. " +
       "Protocol: github.com/malc0mn/amiigo",
   },
+  PROCON: {
+    id: "PROCON",
+    name: "Switch Pro Controller",
+    vendorId: 0x057e,
+    productId: 0x2009,
+    transport: "webhid",
+    systems: [{ id: "amiibo", name: "Amiibo (NTAG215)" }],
+    notes:
+      "Reads Amiibo via the Pro Controller's built-in NFC reader. " +
+      "Also supports Joy-Con (R). Linux blocked: HID descriptor omits report 0x31.",
+  },
 };