Enable to set a setting page when displaying Home screen

ledger_device_sdk/src/nbgl/nbgl_home_and_settings.rs

@@ -50,6 +50,7 @@ pub struct NbglHomeAndSettings {
     generic_contents: nbgl_genericContents_t,
     info_list: nbgl_contentInfoList_t,
     icon: nbgl_icon_details_t,
+    start_page: u8,
 }
 
 impl SyncNBGL for NbglHomeAndSettings {}
@@ -76,6 +77,7 @@ impl<'a> NbglHomeAndSettings {
             generic_contents: nbgl_genericContents_t::default(),
             info_list: nbgl_contentInfoList_t::default(),
             icon: nbgl_icon_details_t::default(),
+            start_page: INIT_HOME_PAGE as u8,
         }
     }
 
@@ -127,6 +129,13 @@ impl<'a> NbglHomeAndSettings {
         }
     }
 
+    pub fn set_page(self, page: u8) -> NbglHomeAndSettings {
+        NbglHomeAndSettings {
+            start_page: page,
+            ..self
+        }
+    }
+
     /// Show the home screen and settings page.
     /// This function will block until an APDU is received or the user quits the app.
     /// DEPRECATED as it constraints to refresh screen for every received APDU.
@@ -186,7 +195,7 @@ impl<'a> NbglHomeAndSettings {
                     self.app_name.as_ptr() as *const c_char,
                     &self.icon as *const nbgl_icon_details_t,
                     core::ptr::null(),
-                    INIT_HOME_PAGE as u8,
+                    self.start_page,
                     &self.generic_contents as *const nbgl_genericContents_t,
                     &self.info_list as *const nbgl_contentInfoList_t,
                     core::ptr::null(),
@@ -263,7 +272,7 @@ impl<'a> NbglHomeAndSettings {
                 self.app_name.as_ptr() as *const c_char,
                 &self.icon as *const nbgl_icon_details_t,
                 core::ptr::null(),
-                INIT_HOME_PAGE as u8,
+                self.start_page,
                 &self.generic_contents as *const nbgl_genericContents_t,
                 &self.info_list as *const nbgl_contentInfoList_t,
                 core::ptr::null(),