extmod: rename modhubcommon to pbhub

This file does not contain an actual python module, only helper functions, so rename it accordingly.

Also remove nonexistant functions from the header file and add include guard.

bricks/stm32.mk

@@ -114,13 +114,13 @@ PYBRICKS_PY_SRC_C = $(addprefix ports/pybricks/extmod/,\
 	modcommon.c \
 	moddebug.c \
 	modhub4.c \
-	modhubcommon.c \
 	modmotor.c \
 	modmovehub.c \
 	modparameters.c \
 	modpupdevices.c \
 	modtools.c \
 	pberror.c \
+	pbhub.c \
 	pbiodevice.c \
 	)
 

extmod/modhub4.c

@@ -14,9 +14,9 @@
 #include "py/runtime.h"
 
 #include "modmotor.h"
-#include "modhubcommon.h"
 #include "modcommon.h"
 #include "pberror.h"
+#include "pbhub.h"
 #include "pbobj.h"
 
 /* Move Hub module table */

extmod/modmovehub.c

@@ -14,9 +14,9 @@
 #include "py/runtime.h"
 
 #include "modmotor.h"
-#include "modhubcommon.h"
 #include "modcommon.h"
 #include "pberror.h"
+#include "pbhub.h"
 #include "pbobj.h"
 
 /* Move Hub module table */

extmod/modhubcommon.c → extmod/pbhub.c

@@ -3,19 +3,11 @@
 
 #include "py/mpconfig.h"
 
-#include <stdio.h>
-
-#include <pbdrv/battery.h>
-#include <pbio/light.h>
 #include <pbsys/sys.h>
 
 #include "py/obj.h"
 
-#include "modmotor.h"
-#include "modhubcommon.h"
-#include "pberror.h"
-#include "pbobj.h"
-
+#include "pbhub.h"
 
 STATIC mp_obj_t hub_shutdown(void) {
     pbsys_power_off();

extmod/modhubcommon.h → extmod/pbhub.h

@@ -1,13 +1,16 @@
 // SPDX-License-Identifier: MIT
 // Copyright (c) 2018 Laurens Valk
 
+#ifndef _PB_EXTMOD_PBHUB_H_
+#define _PB_EXTMOD_PBHUB_H_
+
 #include "py/obj.h"
 
 /* Enums */
 
-/* Module functions */
-const mp_obj_fun_builtin_fixed_t hub_batt_volt_obj;
-const mp_obj_fun_builtin_fixed_t hub_batt_cur_obj;
+/* Functions */
 const mp_obj_fun_builtin_fixed_t hub_shutdown_obj;
 const mp_obj_fun_builtin_fixed_t hub_reboot_obj;
 const mp_obj_fun_builtin_fixed_t hub_update_obj;
+
+#endif // _PB_EXTMOD_PBHUB_H_