3 files changed, 28 insertions, 0 deletions
diff --git a/shared-module/displayio/Display.c b/shared-module/displayio/Display.c
index 11db0f8ff..299c8ad35 100644
--- a/shared-module/displayio/Display.c
+++ b/shared-module/displayio/Display.c
@@ -308,10 +308,27 @@ STATIC void _refresh_display(displayio_display_obj_t* self) {
     displayio_display_core_finish_refresh(&self->core);
 }
 
+void common_hal_displayio_display_set_rotation(displayio_display_obj_t* self, int rotation){
+    bool transposed = (self->core.rotation == 90 || self->core.rotation == 270);
+    bool will_transposed = (rotation == 90 || rotation == 270);
+    if(transposed != will_transposed) {
+        int tmp = self->core.width;
+        self->core.width = self->core.height;
+        self->core.height = tmp;
+    }
+    displayio_display_core_set_rotation(&self->core, rotation);
+    supervisor_stop_terminal();
+    supervisor_start_terminal(self->core.width, self->core.height);
+    if (self->core.current_group != NULL) {
+        displayio_group_update_transform(self->core.current_group, &self->core.transform);
+    }
+}
+
 uint16_t common_hal_displayio_display_get_rotation(displayio_display_obj_t* self){
     return self->core.rotation;
 }
 
+
 bool common_hal_displayio_display_refresh(displayio_display_obj_t* self, uint32_t target_ms_per_frame, uint32_t maximum_ms_per_real_frame) {
     if (!self->auto_refresh && !self->first_manual_refresh) {
         uint64_t current_time = supervisor_ticks_ms64();
diff --git a/shared-module/displayio/display_core.c b/shared-module/displayio/display_core.c
index 658daa8d6..120b70f76 100644
--- a/shared-module/displayio/display_core.c
+++ b/shared-module/displayio/display_core.c
@@ -86,6 +86,15 @@ void displayio_display_core_construct(displayio_display_core_t* self,
     self->height = height;
     self->ram_width = ram_width;
     self->ram_height = ram_height;
+
+    displayio_display_core_set_rotation(self, rotation);
+}
+
+void displayio_display_core_set_rotation( displayio_display_core_t* self,
+        int rotation) {
+    int height = self->height;
+    int width = self->width;
+
     rotation = rotation % 360;
     self->rotation = rotation;
     self->transform.x = 0;
diff --git a/shared-module/displayio/display_core.h b/shared-module/displayio/display_core.h
index 3a69cd40a..1c3d0f09c 100644
--- a/shared-module/displayio/display_core.h
+++ b/shared-module/displayio/display_core.h
@@ -68,6 +68,8 @@ uint16_t displayio_display_core_get_height(displayio_display_core_t* self);
 void displayio_display_core_set_dither(displayio_display_core_t* self, bool dither);
 bool displayio_display_core_get_dither(displayio_display_core_t* self);
 
+void displayio_display_core_set_rotation(displayio_display_core_t* self, int rotation);
+
 bool displayio_display_core_bus_free(displayio_display_core_t *self);
 bool displayio_display_core_begin_transaction(displayio_display_core_t* self);
 void displayio_display_core_end_transaction(displayio_display_core_t* self);