adafruit · dhalbert · Feb 2, 2022 · Jan 31, 2022 · Feb 1, 2022 · Feb 1, 2022
diff --git a/shared-bindings/displayio/Display.c b/shared-bindings/displayio/Display.c
@@ -444,6 +444,23 @@ const mp_obj_property_t displayio_display_bus_obj = {
               MP_ROM_NONE},
 };
 
+//|     root_group: Group
+//|     """The root group on the display."""
+//|
+//|
+STATIC mp_obj_t displayio_display_obj_get_root_group(mp_obj_t self_in) {
+    displayio_display_obj_t *self = native_display(self_in);
+    return common_hal_displayio_display_get_root_group(self);
+}
+MP_DEFINE_CONST_FUN_OBJ_1(displayio_display_get_root_group_obj, displayio_display_obj_get_root_group);
+
+const mp_obj_property_t displayio_display_root_group_obj = {
+    .base.type = &mp_type_property,
+    .proxy = {(mp_obj_t)&displayio_display_get_root_group_obj,
+              MP_ROM_NONE,
+              MP_ROM_NONE},
+};
+
 
 //|     def fill_row(self, y: int, buffer: WriteableBuffer) -> WriteableBuffer:
 //|         """Extract the pixels from a single row
@@ -517,6 +534,7 @@ STATIC const mp_rom_map_elem_t displayio_display_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_height), MP_ROM_PTR(&displayio_display_height_obj) },
     { MP_ROM_QSTR(MP_QSTR_rotation), MP_ROM_PTR(&displayio_display_rotation_obj) },
     { MP_ROM_QSTR(MP_QSTR_bus), MP_ROM_PTR(&displayio_display_bus_obj) },
+    { MP_ROM_QSTR(MP_QSTR_root_group), MP_ROM_PTR(&displayio_display_root_group_obj) },
 };
 STATIC MP_DEFINE_CONST_DICT(displayio_display_locals_dict, displayio_display_locals_dict_table);
 

diff --git a/shared-bindings/displayio/Display.h b/shared-bindings/displayio/Display.h
@@ -69,6 +69,6 @@ mp_float_t common_hal_displayio_display_get_brightness(displayio_display_obj_t *
 bool common_hal_displayio_display_set_brightness(displayio_display_obj_t *self, mp_float_t brightness);
 
 mp_obj_t common_hal_displayio_display_get_bus(displayio_display_obj_t *self);
-
+mp_obj_t common_hal_displayio_display_get_root_group(displayio_display_obj_t *self);
 
 #endif // MICROPY_INCLUDED_SHARED_BINDINGS_DISPLAYIO_DISPLAY_H
diff --git a/shared-bindings/supervisor/__init__.c b/shared-bindings/supervisor/__init__.c
@@ -33,6 +33,7 @@
 #include "shared/runtime/interrupt_char.h"
 #include "supervisor/shared/autoreload.h"
 #include "supervisor/shared/bluetooth/bluetooth.h"
+#include "supervisor/shared/display.h"
 #include "supervisor/shared/status_leds.h"
 #include "supervisor/shared/stack.h"
 #include "supervisor/shared/traceback.h"
@@ -299,6 +300,21 @@ STATIC mp_obj_t supervisor_disable_ble_workflow(void) {
 }
 MP_DEFINE_CONST_FUN_OBJ_0(supervisor_disable_ble_workflow_obj, supervisor_disable_ble_workflow);
 
+//| def reset_terminal(x_pixels: int, y_pixels: int) -> None:
+//|     """Reset the CircuitPython serial terminal with new dimensions."""
+//|     ...
+//|
+STATIC mp_obj_t supervisor_reset_terminal(mp_obj_t x_pixels, mp_obj_t y_pixels) {
+    #if CIRCUITPY_DISPLAYIO
+    supervisor_stop_terminal();
+    supervisor_start_terminal(mp_obj_get_int(x_pixels), mp_obj_get_int(y_pixels));
+    #else
+    mp_raise_NotImplementedError(NULL);
+    #endif
+    return mp_const_none;
+}
+MP_DEFINE_CONST_FUN_OBJ_2(supervisor_reset_terminal_obj, supervisor_reset_terminal);
+
 STATIC const mp_rom_map_elem_t supervisor_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_supervisor) },
     { MP_ROM_QSTR(MP_QSTR_enable_autoreload),  MP_ROM_PTR(&supervisor_enable_autoreload_obj) },
@@ -312,6 +328,7 @@ STATIC const mp_rom_map_elem_t supervisor_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_ticks_ms),  MP_ROM_PTR(&supervisor_ticks_ms_obj) },
     { MP_ROM_QSTR(MP_QSTR_get_previous_traceback),  MP_ROM_PTR(&supervisor_get_previous_traceback_obj) },
     { MP_ROM_QSTR(MP_QSTR_disable_ble_workflow),  MP_ROM_PTR(&supervisor_disable_ble_workflow_obj) },
+    { MP_ROM_QSTR(MP_QSTR_reset_terminal),  MP_ROM_PTR(&supervisor_reset_terminal_obj) },
 };
 
 STATIC MP_DEFINE_CONST_DICT(supervisor_module_globals, supervisor_module_globals_table);

diff --git a/shared-module/displayio/Display.c b/shared-module/displayio/Display.c
@@ -220,6 +220,10 @@ mp_obj_t common_hal_displayio_display_get_bus(displayio_display_obj_t *self) {
     return self->core.bus;
 }
 
+mp_obj_t common_hal_displayio_display_get_root_group(displayio_display_obj_t *self) {
+    return self->core.current_group;
+}
+
 STATIC const displayio_area_t *_get_refresh_areas(displayio_display_obj_t *self) {
     if (self->core.full_refresh) {
         self->core.area.next = NULL;

diff --git a/shared-module/displayio/display_core.c b/shared-module/displayio/display_core.c
@@ -163,12 +163,15 @@ void displayio_display_core_set_rotation(displayio_display_core_t *self,
 }
 
 bool displayio_display_core_show(displayio_display_core_t *self, displayio_group_t *root_group) {
-    if (root_group == NULL) {
-        if (!circuitpython_splash.in_group) {
-            root_group = &circuitpython_splash;
-        } else if (self->current_group == &circuitpython_splash) {
-            return true;
-        }
+
+    if (root_group == NULL) { // set the display to the REPL, reset REPL position and size
+        circuitpython_splash.in_group = false;
+        // force the circuit_python_splash out of any group (Note: could cause problems with the parent group)
+        circuitpython_splash.x = 0; // reset position in case someone moved it.
+        circuitpython_splash.y = 0;
+        supervisor_stop_terminal();
+        supervisor_start_terminal(self->width, self->height);
+        root_group = &circuitpython_splash;
     }
     if (root_group == self->current_group) {
         return true;