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Code Issues 2 Pull requests Projects Releases 3 Packages Wiki Activity Actions

Add USB auto-read key transfer + UI redesign

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USB auto-read:
- ESP responds to 'KEY?\n' over USB serial with 'HMAC_KEY:<hex>'
- Android UsbKeyReceiver (manifest BroadcastReceiver) catches USB_DEVICE_ATTACHED
- Filters on Espressif vendor 0x303a, requests USB permission
- Opens CDC-ACM serial (115200), sends KEY?, parses response, saves to SharedPreferences
- Works even when app not in foreground
- usb-serial-for-android v3.7.3 via JitPack

UI redesign:
- activity_main.xml: FrameLayout with settings icon top-right, relay button center, status bottom-left (14sp)
- Scan & Connect button moved to SettingsActivity
- SettingsActivity: hint text 'Voer de HMAC sleutel in of sluit de relaismodule aan op de telefoon'
- SettingsActivity: scan button saves key + returns RESULT_OK to trigger scanning
- MainActivity: removed scanButton, auto-scan on onResume when key is set
- Back button removed from settings (ActionBar up navigation only)

README updated with USB protocol docs, new UI description, and updated setup guide
This commit is contained in:
eddy 2026-07-26 08:39:28 +02:00
commit 4518aec34e
10 changed files with 270 additions and 74 deletions
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33
android/app/src/main/res/layout/activity_main.xml
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@ -1,42 +1,33 @@
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center"
android:padding="32dp">
android:padding="16dp">
<ImageButton
android:id="@+id/settingsButton"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_gravity="end"
android:layout_gravity="end|top"
android:src="@drawable/ic_settings"
android:background="?android:attr/selectableItemBackgroundBorderless"
android:contentDescription="Instellingen"
android:layout_marginBottom="16dp" />
<TextView
android:id="@+id/statusText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Disconnected"
android:textSize="20sp"
android:layout_marginBottom="48dp"/>
android:contentDescription="Instellingen" />
<Button
android:id="@+id/relayButton"
android:layout_width="200dp"
android:layout_height="200dp"
android:layout_gravity="center"
android:text="HOLD"
android:textSize="24sp"
android:enabled="false"/>
android:enabled="false" />
<Button
android:id="@+id/scanButton"
<TextView
android:id="@+id/statusText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Scan &amp; Connect"
android:layout_marginTop="48dp"/>
android:layout_gravity="bottom|start"
android:text="Disconnected"
android:textSize="14sp" />
</LinearLayout>
</FrameLayout>