feat(core): BLE pairing flow

core/embed/rust/src/ui/layout_eckhart/firmware/action_bar.rs

@@ -1,4 +1,5 @@
 use crate::{
+    strutil::TString,
     translations::TR,
     ui::{
         component::{Component, Event, EventCtx, Timeout},
@@ -128,6 +129,14 @@ impl ActionBar {
         Self::new(Mode::PaginateOnly, None, None, None)
     }
 
+    pub fn new_text_only(text: TString<'static>) -> Self {
+        Self::new_single(
+            Button::with_text(text)
+                .styled(theme::button_always_disabled())
+                .initially_enabled(false),
+        )
+    }
+
     pub fn with_left_short(mut self, short: bool) -> Self {
         if let Mode::Double { ref mut left_short } = self.mode {
             *left_short = short;

core/embed/rust/src/ui/layout_eckhart/theme/firmware.rs

@@ -545,6 +545,22 @@ pub const fn button_keyboard_next() -> ButtonStyleSheet {
     }
 }
 
+// Things that look like button but don't do anything.
+pub const fn button_always_disabled() -> ButtonStyleSheet {
+    let style = &ButtonStyle {
+        font: fonts::FONT_SATOSHI_MEDIUM_26,
+        text_color: GREY_LIGHT,
+        button_color: BG,
+        icon_color: GREY_LIGHT,
+        background_color: BG,
+    };
+    ButtonStyleSheet {
+        normal: style,
+        active: style,
+        disabled: style,
+    }
+}
+
 pub const fn input_mnemonic() -> ButtonStyleSheet {
     ButtonStyleSheet {
         normal: &ButtonStyle {

core/embed/rust/src/ui/layout_eckhart/ui_firmware.rs

@@ -1003,9 +1003,7 @@ impl FirmwareUI for UIEckhart {
         ops = ops.text(text, font);
         let screen = TextScreen::new(FormattedText::new(ops))
             .with_header(Header::new("Pair with new device".into()).with_close_button())
-            .with_action_bar(ActionBar::new_single(Button::with_text(
-                "Continue on host".into(),
-            )));
+            .with_action_bar(ActionBar::new_text_only("Continue on host".into()));
         #[cfg(feature = "ble")]
         let screen = crate::ui::component::BLEHandler::new(screen, true);
         let layout = RootComponent::new(screen);

core/embed/upymod/qstrdefsport.h

@@ -124,6 +124,7 @@ Q(apps.management.apply_flags)
 Q(apps.management.apply_settings)
 Q(apps.management.authenticate_device)
 Q(apps.management.backup_device)
+Q(apps.management.ble)
 Q(apps.management.ble.pair_new_device)
 Q(apps.management.ble.unpair)
 Q(apps.management.change_language)
@@ -168,6 +169,7 @@ Q(benchmark)
 Q(benchmarks)
 Q(bitcoin)
 Q(bitcoinlike)
+Q(ble)
 Q(bolt)
 Q(boot)
 Q(cache)

core/src/apps/homescreen/device_menu.py

@@ -1,6 +1,7 @@
 import storage.device
+import trezorble as ble
 import trezorui_api
-from trezor import utils
+from trezor import log, utils
 from trezor.ui.layouts import raise_if_not_confirmed
 
 
@@ -8,10 +9,14 @@ async def handle_device_menu() -> None:
     # MOCK DATA
     failed_backup = True
     battery_percentage = 22
-    paired_devices = ["Trezor Suite"]
+    paired_devices = ["Trezor Suite"] if ble.is_connected() else []
     # ###
     firmware_version = ".".join(map(str, utils.VERSION))
     device_name = storage.device.get_label() or "Trezor"
+    log.debug(
+        __name__,
+        f"device menu, BLE state: {ble.connection_flags()} (peers: {ble.peer_count()})",
+    )
 
     menu_result = await raise_if_not_confirmed(
         trezorui_api.show_device_menu(
@@ -27,5 +32,11 @@ async def handle_device_menu() -> None:
         from apps.management.ble.pair_new_device import pair_new_device
 
         await pair_new_device()
+    elif menu_result == "DeviceDisconnect":
+        from trezor.messages import BleUnpair
+
+        from apps.management.ble.unpair import unpair
+
+        await unpair(BleUnpair(all=False))
     else:
         raise RuntimeError(f"Unknown menu {menu_result}")

core/src/apps/management/ble/pair_new_device.py

@@ -1,17 +1,43 @@
+import trezorble as ble
 import trezorui_api
-from trezor.ui.layouts import interact
+from storage import device as storage_device
+from trezor import utils
+from trezor.ui.layouts import CONFIRMED, raise_if_not_confirmed
+from trezor.wire import ActionCancelled
+
+
+def _end_pairing() -> None:
+    if ble.peer_count() > 0:
+        ble.start_advertising(True, storage_device.get_label())
+    else:
+        ble.stop_advertising()
 
 
 async def pair_new_device() -> None:
-    label = "Trezor T3W1"
-    await interact(
-        trezorui_api.show_pairing_device_name(device_name=label),
-        None,
-        raise_on_cancel=None,  # for UI testing
-    )
+    label = storage_device.get_label() or utils.MODEL_FULL_NAME
+    ble.start_advertising(False, label)
+    try:
+        code = await raise_if_not_confirmed(
+            trezorui_api.show_pairing_device_name(
+                device_name=label,
+            ),
+            None,
+        )
+        if not isinstance(code, int):
+            raise ActionCancelled
 
-    code = 12345
-    await interact(
-        trezorui_api.show_pairing_code(code=f"{code:0>6}"),
-        None,
-    )
+        try:
+            result = await raise_if_not_confirmed(
+                trezorui_api.show_pairing_code(
+                    code=f"{code:0>6}",
+                ),
+                None,
+            )
+        except Exception:
+            ble.reject_pairing()
+            raise
+        else:
+            if result is CONFIRMED:
+                ble.allow_pairing(code)
+    finally:
+        _end_pairing()