nrf: Use the shared bitbangio module

ports/nrf/Makefile

@@ -233,20 +233,25 @@ SRC_SHARED_MODULE = \
 	storage/__init__.c \
 	struct/__init__.c \
 	gamepad/__init__.c \
-	gamepad/GamePad.c
-
-#  bitbangio/__init__.c \
+	gamepad/GamePad.c \
+	bitbangio/__init__.c \
 	bitbangio/I2C.c \
 	bitbangio/OneWire.c \
-	bitbangio/SPI.c \
-	busio/OneWire.c \
+	bitbangio/SPI.c
+
+#  busio/OneWire.c \
 	uheap/__init__.c \
 	ustack/__init__.c
 
 SRC_SHARED_BINDINGS = \
 	struct/__init__.c \
 	gamepad/__init__.c \
-	gamepad/GamePad.c
+	gamepad/GamePad.c \
+	bitbangio/__init__.c \
+	bitbangio/I2C.c \
+	bitbangio/SPI.c \
+	bitbangio/OneWire.c
+
 
 SRC_SHARED_MODULE_EXPANDED = $(addprefix shared-bindings/, $(SRC_SHARED_BINDINGS)) \
                              $(addprefix shared-module/, $(SRC_SHARED_MODULE))

ports/nrf/mpconfigport.h

@@ -129,7 +129,6 @@
 #define MICROPY_PY_MACHINE_PULSE                 (0)
 #define MICROPY_PY_MACHINE_I2C_MAKE_NEW          machine_hard_i2c_make_new
 #define MICROPY_PY_MACHINE_SPI                   (0)
-#define MICROPY_PY_MACHINE_SPI_MIN_DELAY         (0)
 #define MICROPY_PY_FRAMEBUF                      (0)
 
 #define MICROPY_KBD_EXCEPTION                    (1)
@@ -217,6 +216,7 @@ typedef long mp_off_t;
 // extra built in modules to add to the list of known ones
 
 extern const struct _mp_obj_module_t microcontroller_module;
+extern const struct _mp_obj_module_t bitbangio_module;
 extern const struct _mp_obj_module_t analogio_module;
 extern const struct _mp_obj_module_t digitalio_module;
 extern const struct _mp_obj_module_t pulseio_module;
@@ -271,6 +271,7 @@ extern const struct _mp_obj_module_t ble_module;
     { MP_OBJ_NEW_QSTR (MP_QSTR_digitalio       ), (mp_obj_t)&digitalio_module       }, \
     { MP_OBJ_NEW_QSTR (MP_QSTR_pulseio         ), (mp_obj_t)&pulseio_module         }, \
     { MP_OBJ_NEW_QSTR (MP_QSTR_microcontroller ), (mp_obj_t)&microcontroller_module }, \
+    { MP_OBJ_NEW_QSTR (MP_QSTR_bitbangio       ), (mp_obj_t)&bitbangio_module       }, \
     { MP_OBJ_NEW_QSTR (MP_QSTR_os              ), (mp_obj_t)&os_module              }, \
     { MP_OBJ_NEW_QSTR (MP_QSTR_random          ), (mp_obj_t)&random_module          }, \
     { MP_OBJ_NEW_QSTR (MP_QSTR_storage         ), (mp_obj_t)&storage_module         },\