2 files changed, 185 insertions, 0 deletions
diff --git a/shared-module/network/__init__.c b/shared-module/network/__init__.c
new file mode 100644
index 000000000..a674e8478
--- /dev/null
+++ b/shared-module/network/__init__.c
@@ -0,0 +1,95 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Nick Moore
+ *
+ * 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 "py/objlist.h"
+#include "py/runtime.h"
+#include "py/mphal.h"
+#include "py/mperrno.h"
+
+#include "shared-bindings/random/__init__.h"
+
+#include "shared-module/network/__init__.h"
+
+// mod_network_nic_list needs to be declared in mpconfigport.h 
+
+
+void network_module_init(void) {
+    mp_obj_list_init(&MP_STATE_PORT(mod_network_nic_list), 0);
+}
+
+void network_module_deinit(void) {
+}
+
+void network_module_background(void) {
+    static uint32_t next_tick = 0;
+    uint32_t this_tick = ticks_ms;
+    if (this_tick < next_tick) return;
+    next_tick = this_tick + 1000;
+
+    for (mp_uint_t i = 0; i < MP_STATE_PORT(mod_network_nic_list).len; i++) {
+        mp_obj_t nic = MP_STATE_PORT(mod_network_nic_list).items[i];
+        mod_network_nic_type_t *nic_type = (mod_network_nic_type_t*)mp_obj_get_type(nic); 
+        if (nic_type->timer_tick != NULL) nic_type->timer_tick(nic);
+    }
+}
+
+void network_module_register_nic(mp_obj_t nic) {
+    for (mp_uint_t i = 0; i < MP_STATE_PORT(mod_network_nic_list).len; i++) {
+        if (MP_STATE_PORT(mod_network_nic_list).items[i] == nic) {
+            // nic already registered
+            return;
+        }
+    }
+    // nic not registered so add to list
+    mp_obj_list_append(MP_OBJ_FROM_PTR(&MP_STATE_PORT(mod_network_nic_list)), nic);
+}
+
+mp_obj_t network_module_find_nic(const uint8_t *ip) {
+    // find a NIC that is suited to given IP address
+    for (mp_uint_t i = 0; i < MP_STATE_PORT(mod_network_nic_list).len; i++) {
+        mp_obj_t nic = MP_STATE_PORT(mod_network_nic_list).items[i];
+        // TODO check IP suitability here
+        //mod_network_nic_type_t *nic_type = (mod_network_nic_type_t*)mp_obj_get_type(nic);
+        return nic;
+    }
+
+    nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, translate("no available NIC")));
+}
+
+void network_module_create_random_mac_address(uint8_t *mac) {
+    uint32_t rb1 = shared_modules_random_getrandbits(24);
+    uint32_t rb2 = shared_modules_random_getrandbits(24);
+    // first octet has multicast bit (0) cleared and local bit (1) set
+    // everything else is just set randomly
+    mac[0] = ((uint8_t)(rb1 >> 16) & 0xfe) | 0x02;
+    mac[1] = (uint8_t)(rb1 >> 8);
+    mac[2] = (uint8_t)(rb1);
+    mac[3] = (uint8_t)(rb2 >> 16);
+    mac[4] = (uint8_t)(rb2 >> 8);
+    mac[5] = (uint8_t)(rb2);
+}
diff --git a/shared-module/network/__init__.h b/shared-module/network/__init__.h
new file mode 100644
index 000000000..00a3c3957
--- /dev/null
+++ b/shared-module/network/__init__.h
@@ -0,0 +1,90 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2013, 2014 Damien P. George
+ * Copyright (c) 2018 Nick Moore
+ *
+ * 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.
+ */
+
+void network_module_create_random_mac_address(uint8_t *mac);
+
+#ifndef MICROPY_INCLUDED_SHARED_MODULE_NETWORK___INIT___H
+#define MICROPY_INCLUDED_SHARED_MODULE_NETWORK___INIT___H
+
+#define MOD_NETWORK_IPADDR_BUF_SIZE (4)
+
+#define MOD_NETWORK_AF_INET (2)
+#define MOD_NETWORK_AF_INET6 (10)
+
+#define MOD_NETWORK_SOCK_STREAM (1)
+#define MOD_NETWORK_SOCK_DGRAM (2)
+#define MOD_NETWORK_SOCK_RAW (3)
+
+struct _mod_network_socket_obj_t;
+
+typedef struct _mod_network_nic_type_t {
+    mp_obj_type_t base;
+
+    // API for non-socket operations
+    int (*gethostbyname)(mp_obj_t nic, const char *name, mp_uint_t len, uint8_t *ip_out);
+
+    // API for socket operations; return -1 on error
+    int (*socket)(struct _mod_network_socket_obj_t *socket, int *_errno);
+    void (*close)(struct _mod_network_socket_obj_t *socket);
+    int (*bind)(struct _mod_network_socket_obj_t *socket, byte *ip, mp_uint_t port, int *_errno);
+    int (*listen)(struct _mod_network_socket_obj_t *socket, mp_int_t backlog, int *_errno);
+    int (*accept)(struct _mod_network_socket_obj_t *socket, struct _mod_network_socket_obj_t *socket2, byte *ip, mp_uint_t *port, int *_errno);
+    int (*connect)(struct _mod_network_socket_obj_t *socket, byte *ip, mp_uint_t port, int *_errno);
+    mp_uint_t (*send)(struct _mod_network_socket_obj_t *socket, const byte *buf, mp_uint_t len, int *_errno);
+    mp_uint_t (*recv)(struct _mod_network_socket_obj_t *socket, byte *buf, mp_uint_t len, int *_errno);
+    mp_uint_t (*sendto)(struct _mod_network_socket_obj_t *socket, const byte *buf, mp_uint_t len, byte *ip, mp_uint_t port, int *_errno);
+    mp_uint_t (*recvfrom)(struct _mod_network_socket_obj_t *socket, byte *buf, mp_uint_t len, byte *ip, mp_uint_t *port, int *_errno);
+    int (*setsockopt)(struct _mod_network_socket_obj_t *socket, mp_uint_t level, mp_uint_t opt, const void *optval, mp_uint_t optlen, int *_errno);
+    int (*settimeout)(struct _mod_network_socket_obj_t *socket, mp_uint_t timeout_ms, int *_errno);
+    int (*ioctl)(struct _mod_network_socket_obj_t *socket, mp_uint_t request, mp_uint_t arg, int *_errno);
+    void (*timer_tick)(struct _mod_network_socket_obj_t *socket);
+} mod_network_nic_type_t;
+
+typedef struct _mod_network_socket_obj_t {
+    mp_obj_base_t base;
+    mp_obj_t nic;
+    mod_network_nic_type_t *nic_type;
+    union {
+        struct {
+            uint8_t domain;
+            uint8_t type;
+            int8_t fileno;
+        } u_param;
+        mp_uint_t u_state;
+    };
+} mod_network_socket_obj_t;
+
+extern const mod_network_nic_type_t mod_network_nic_type_wiznet5k;
+extern const mod_network_nic_type_t mod_network_nic_type_cc3k;
+
+void network_module_init(void);
+void network_module_deinit(void);
+void network_module_background(void);
+void network_module_register_nic(mp_obj_t nic);
+mp_obj_t network_module_find_nic(const uint8_t *ip);
+
+#endif // MICROPY_INCLUDED_SHARED_MODULE_NETWORK___INIT___H