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diff --git a/circuitpython/shared-bindings/board/__init__.h b/circuitpython/shared-bindings/board/__init__.h
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+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 Scott Shawcroft
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_SHARED_BINDINGS_BOARD___INIT___H
+#define MICROPY_INCLUDED_SHARED_BINDINGS_BOARD___INIT___H
+
+#include "py/obj.h"
+#include "py/objstr.h"
+
+#include "shared-bindings/microcontroller/Pin.h"  // for the pin definitions
+
+extern const mp_obj_dict_t board_module_globals;
+STATIC const MP_DEFINE_STR_OBJ(board_module_id_obj, CIRCUITPY_BOARD_ID);
+
+bool common_hal_board_is_i2c(mp_obj_t obj);
+mp_obj_t common_hal_board_get_i2c(const mp_int_t instance);
+mp_obj_t common_hal_board_create_i2c(const mp_int_t instance);
+mp_obj_t board_i2c(size_t n_args, const mp_obj_t *args);
+MP_DECLARE_CONST_FUN_OBJ_0(board_i2c_obj);
+
+bool common_hal_board_is_spi(mp_obj_t obj);
+mp_obj_t common_hal_board_get_spi(const mp_int_t instance);
+mp_obj_t common_hal_board_create_spi(const mp_int_t instance);
+mp_obj_t board_spi(size_t n_args, const mp_obj_t *args);
+MP_DECLARE_CONST_FUN_OBJ_0(board_spi_obj);
+
+bool common_hal_board_is_uart(mp_obj_t obj);
+mp_obj_t common_hal_board_get_uart(const mp_int_t instance);
+mp_obj_t common_hal_board_create_uart(const mp_int_t instance);
+mp_obj_t board_uart(size_t n_args, const mp_obj_t *args);
+MP_DECLARE_CONST_FUN_OBJ_0(board_uart_obj);
+
+#define CIRCUITPY_BOARD_BUS_SINGLETON(name, bus, instance) \
+    STATIC mp_obj_t board_##name(void) { \
+        return common_hal_board_create_##bus(instance); \
+    } \
+    MP_DEFINE_CONST_FUN_OBJ_0(board_##name##_obj, board_##name);
+
+#define CIRCUITPYTHON_BOARD_DICT_STANDARD_ITEMS \
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_board) }, \
+    { MP_ROM_QSTR(MP_QSTR_board_id), MP_ROM_PTR(&board_module_id_obj) },
+
+#endif  // MICROPY_INCLUDED_SHARED_BINDINGS_BOARD___INIT___H