StackRduino
diff --git a/‎shared-bindings/microcontroller/Pin.c‎
Lines changed: 1 addition & 1 deletion b/‎shared-bindings/microcontroller/Pin.c‎
Lines changed: 1 addition & 1 deletion
@@ -55,7 +55,7 @@ void assert_pin(mp_obj_t obj, bool none_ok) {
 }
 
 void assert_pin_free(const mcu_pin_obj_t* pin) {
-    if (pin != NULL && !common_hal_mcu_pin_is_free(pin)) {
+    if (pin != NULL && pin != MP_OBJ_TO_PTR(mp_const_none) && !common_hal_mcu_pin_is_free(pin)) {
         nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "Pin %q in use", pin->name));
     }
 }
Original file line number	Diff line number	Diff line change
`@@ -55,7 +55,7 @@ void assert_pin(mp_obj_t obj, bool none_ok) {`
`55`	`55`	`}`
`56`	`56`
`57`	`57`	`void assert_pin_free(const mcu_pin_obj_t* pin) {`
`58`		`- if (pin != NULL && !common_hal_mcu_pin_is_free(pin)) {`
	`58`	`+ if (pin != NULL && pin != MP_OBJ_TO_PTR(mp_const_none) && !common_hal_mcu_pin_is_free(pin)) {`
`59`	`59`	`nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "Pin %q in use", pin->name));`
`60`	`60`	`}`
`61`	`61`	`}`