Add custom error View for CameraConnectionError

src/seedsigner/views/view.py

@@ -362,6 +362,20 @@ class NetworkMismatchErrorView(ErrorView):
 class UnhandledExceptionView(View):
     error: list[str]
 
+    def __post_init__(self):
+        from seedsigner.hardware.camera import CameraConnectionError
+        super().__post_init__()
+
+        # Camera errors bubble up to here. Reroute to their custom error View.
+        if self.error[0] == CameraConnectionError.__name__:
+            self.set_redirect(
+                Destination(
+                    CameraConnectionErrorView,
+                    skip_current_view=True,
+                )
+            )
+
+
     def run(self):
         self.run_screen(
             ErrorScreen,
@@ -376,6 +390,21 @@ class UnhandledExceptionView(View):
 
 
 
+@dataclass
+class CameraConnectionErrorView(View):
+    def run(self):
+        self.run_screen(
+            ErrorScreen,
+            title=_("Hardware Error"),
+            status_headline=_("Cannot access camera"),
+            text=_("Disconnect power and check for a loose camera connection."),
+            button_data=[ButtonOption("Back to Main Menu")],
+            show_back_button=False,
+        )
+
+        return Destination(MainMenuView, clear_history=True)
+
+
 @dataclass
 class OptionDisabledView(View):
     UPDATE_SETTING = ButtonOption("Update setting")

tests/base.py

@@ -10,7 +10,7 @@ sys.modules['seedsigner.gui.screens.screensaver'] = MagicMock()
 sys.modules['seedsigner.gui.toast'] = MagicMock()
 sys.modules['seedsigner.views.screensaver'] = MagicMock()
 sys.modules['seedsigner.hardware.buttons'] = MagicMock()
-sys.modules['seedsigner.hardware.camera'] = MagicMock()
+sys.modules['seedsigner.hardware.camera.Camera'] = MagicMock()
 sys.modules['seedsigner.hardware.st7789_mpy'] = MagicMock()
 sys.modules['seedsigner.hardware.ili9341'] = MagicMock()
 

tests/screenshot_generator/generator.py

@@ -20,7 +20,7 @@ sys.modules['seedsigner.hardware.displays.ili9341'] = MagicMock()
 sys.modules['seedsigner.views.screensaver.ScreensaverScreen'] = MagicMock()
 sys.modules['RPi'] = MagicMock()
 sys.modules['RPi.GPIO'] = MagicMock()
-sys.modules['seedsigner.hardware.camera'] = MagicMock()
+sys.modules['seedsigner.hardware.camera.Camera'] = MagicMock()
 sys.modules['seedsigner.hardware.microsd'] = MagicMock()
 
 from seedsigner.controller import Controller
@@ -42,7 +42,7 @@ from seedsigner.models.settings_definition import SettingsConstants, SettingsDef
 from seedsigner.views import (MainMenuView, PowerOptionsView, RestartView, NotYetImplementedView, UnhandledExceptionView, 
     psbt_views, seed_views, settings_views, tools_views, scan_views)
 from seedsigner.views.screensaver import OpeningSplashView
-from seedsigner.views.view import NetworkMismatchErrorView, OptionDisabledView, PowerOffView
+from seedsigner.views.view import CameraConnectionErrorView, NetworkMismatchErrorView, OptionDisabledView, PowerOffView
 
 from .utils import ScreenshotComplete, ScreenshotConfig, ScreenshotRenderer
 
@@ -414,7 +414,8 @@ def generate_screenshots(locale):
             ],
             "Misc Error Views": [
                 ScreenshotConfig(NotYetImplementedView),
-                ScreenshotConfig(UnhandledExceptionView, dict(error=["CameraConnectionError", "camera.py, 44, in start_video_stream_mode", "Camera error. Check camera connection."])),
+                ScreenshotConfig(UnhandledExceptionView, dict(error=["IndexError", "line 1, in some_buggy_code.py", "list index out of range"])),
+                ScreenshotConfig(CameraConnectionErrorView),
                 ScreenshotConfig(NetworkMismatchErrorView, dict(derivation_path="m/84'/1'/0'")),
                 ScreenshotConfig(OptionDisabledView, dict(settings_attr=SettingsConstants.SETTING__MESSAGE_SIGNING)),
                 ScreenshotConfig(scan_views.ScanInvalidQRTypeView)