esp8266: Add skeleton "network" module.

MicroPython "network" module interface requires it to contains classes
to instantiate. But as we have a static network interace, make WLAN()
"constructor" just return module itself, and just make all methods
module-global functions.

esp8266/modnetwork.c

@@ -0,0 +1,59 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015 Paul Sokolovsky
+ *
+ * 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.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+
+#include "py/nlr.h"
+#include "py/objlist.h"
+#include "py/runtime.h"
+#include "modnetwork.h"
+
+extern const mp_obj_module_t network_module;
+
+STATIC mp_obj_t get_module() {
+    return (mp_obj_t)&network_module;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_0(get_module_obj, get_module);
+
+STATIC const mp_map_elem_t mp_module_network_globals_table[] = {
+    { MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_network) },
+    // MicroPython "network" module interface requires it to contains classes
+    // to instantiate. But as we have just a static network interace,
+    // use module as a "class", and just make all methods module-global
+    // functions.
+    { MP_OBJ_NEW_QSTR(MP_QSTR_WLAN), (mp_obj_t)&get_module_obj },
+};
+
+STATIC MP_DEFINE_CONST_DICT(mp_module_network_globals, mp_module_network_globals_table);
+
+const mp_obj_module_t network_module = {
+    .base = { &mp_type_module },
+    .name = MP_QSTR_network,
+    .globals = (mp_obj_dict_t*)&mp_module_network_globals,
+};