5 files changed, 17 insertions, 7 deletions
diff --git a/shared-bindings/supervisor/RunReason.c b/shared-bindings/supervisor/RunReason.c
index ee08f6d71..7e7a74d2f 100644
--- a/shared-bindings/supervisor/RunReason.c
+++ b/shared-bindings/supervisor/RunReason.c
@@ -29,7 +29,7 @@
 #include "shared-bindings/supervisor/RunReason.h"
 
 MAKE_ENUM_VALUE(supervisor_run_reason_type, run_reason, STARTUP, RUN_REASON_STARTUP);
-MAKE_ENUM_VALUE(supervisor_run_reason_type, run_reason, AUTORELOAD, RUN_REASON_AUTORELOAD);
+MAKE_ENUM_VALUE(supervisor_run_reason_type, run_reason, AUTORELOAD, RUN_REASON_AUTO_RELOAD);
 MAKE_ENUM_VALUE(supervisor_run_reason_type, run_reason, SUPERVISOR_RELOAD, RUN_REASON_SUPERVISOR_RELOAD);
 MAKE_ENUM_VALUE(supervisor_run_reason_type, run_reason, REPL_RELOAD, RUN_REASON_REPL_RELOAD);
 
@@ -40,8 +40,8 @@ MAKE_ENUM_VALUE(supervisor_run_reason_type, run_reason, REPL_RELOAD, RUN_REASON_
 //|     """CircuitPython started the microcontroller started up. See `microcontroller.cpu.reset_reason`
 //|        for more detail on why the microcontroller was started."""
 //|
-//|     AUTORELOAD: object
-//|     """CircuitPython restarted due to a USB write to the filesystem."""
+//|     AUTO_RELOAD: object
+//|     """CircuitPython restarted due to an external write to the filesystem."""
 //|
 //|     SUPERVISOR_RELOAD: object
 //|     """CircuitPython restarted due to a call to `supervisor.reload()`."""
@@ -51,7 +51,7 @@ MAKE_ENUM_VALUE(supervisor_run_reason_type, run_reason, REPL_RELOAD, RUN_REASON_
 //|
 MAKE_ENUM_MAP(run_reason) {
     MAKE_ENUM_MAP_ENTRY(run_reason, STARTUP),
-    MAKE_ENUM_MAP_ENTRY(run_reason, AUTORELOAD),
+    MAKE_ENUM_MAP_ENTRY(run_reason, AUTO_RELOAD),
     MAKE_ENUM_MAP_ENTRY(run_reason, SUPERVISOR_RELOAD),
     MAKE_ENUM_MAP_ENTRY(run_reason, REPL_RELOAD),
 };
diff --git a/shared-bindings/supervisor/RunReason.h b/shared-bindings/supervisor/RunReason.h
index 934c72fd8..391e6d306 100644
--- a/shared-bindings/supervisor/RunReason.h
+++ b/shared-bindings/supervisor/RunReason.h
@@ -28,7 +28,7 @@
 
 typedef enum {
     RUN_REASON_STARTUP,
-    RUN_REASON_AUTORELOAD,
+    RUN_REASON_AUTO_RELOAD,
     RUN_REASON_SUPERVISOR_RELOAD,
     RUN_REASON_REPL_RELOAD,
 } supervisor_run_reason_t;
diff --git a/shared-bindings/supervisor/Runtime.c b/shared-bindings/supervisor/Runtime.c
index 6500dadd5..67193e051 100755
--- a/shared-bindings/supervisor/Runtime.c
+++ b/shared-bindings/supervisor/Runtime.c
@@ -25,9 +25,13 @@
  */
 
 #include <stdbool.h>
+#include "py/enum.h"
 #include "py/objproperty.h"
+#include "shared-bindings/supervisor/RunReason.h"
 #include "shared-bindings/supervisor/Runtime.h"
 
+STATIC supervisor_run_reason_t _run_reason;
+
 //TODO: add USB, REPL to description once they're operational
 //| class Runtime:
 //|     """Current status of runtime objects.
@@ -94,8 +98,7 @@ const mp_obj_property_t supervisor_serial_bytes_available_obj = {
 //|     """Returns why CircuitPython started running this particular time.
 //|
 STATIC mp_obj_t supervisor_get_run_reason(mp_obj_t self) {
-    mp_raise_NotImplementedError(NULL);
-    return mp_const_none;
+    return cp_enum_find(&supervisor_run_reason_type, _run_reason);
 }
 MP_DEFINE_CONST_FUN_OBJ_1(supervisor_get_run_reason_obj, supervisor_get_run_reason);
 
@@ -106,6 +109,9 @@ const mp_obj_property_t supervisor_run_reason_obj = {
               (mp_obj_t)&mp_const_none_obj},
 };
 
+void supervisor_set_run_reason(supervisor_run_reason_t run_reason) {
+    _run_reason = run_reason;
+}
 
 STATIC const mp_rom_map_elem_t supervisor_runtime_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_serial_connected), MP_ROM_PTR(&supervisor_serial_connected_obj) },
diff --git a/shared-bindings/supervisor/Runtime.h b/shared-bindings/supervisor/Runtime.h
index 2dc59c3ab..51ed7604d 100755
--- a/shared-bindings/supervisor/Runtime.h
+++ b/shared-bindings/supervisor/Runtime.h
@@ -30,9 +30,12 @@
 #include <stdbool.h>
 #include "py/obj.h"
 
+#include "shared-bindings/supervisor/RunReason.h"
 
 extern const mp_obj_type_t supervisor_runtime_type;
 
+void supervisor_set_run_reason(supervisor_run_reason_t run_reason);
+
 bool common_hal_get_serial_connected(void);
 
 bool common_hal_get_serial_bytes_available(void);
diff --git a/shared-bindings/supervisor/__init__.c b/shared-bindings/supervisor/__init__.c
index bc6fdbff5..4d2d6db30 100644
--- a/shared-bindings/supervisor/__init__.c
+++ b/shared-bindings/supervisor/__init__.c
@@ -88,6 +88,7 @@ MP_DEFINE_CONST_FUN_OBJ_1(supervisor_set_rgb_status_brightness_obj, supervisor_s
 //|
 STATIC mp_obj_t supervisor_reload(void) {
     reload_requested = true;
+    supervisor_set_run_reason(RUN_REASON_SUPERVISOR_RELOAD);
     mp_raise_reload_exception();
     return mp_const_none;
 }