Maggie Mei / emw3162Interface

EMW3162 driver

EMW3162Interface.cpp@0:65ba09002ce8, 2016-11-01 (annotated)

Committer:
Maggie17
Date:
Tue Nov 01 12:43:30 2016 +0000
Revision:
0:65ba09002ce8
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Maggie17 0:65ba09002ce8 1 /* ESP8266 implementation of NetworkInterfaceAPI
Maggie17 0:65ba09002ce8 2 * Copyright (c) 2015 ARM Limited
Maggie17 0:65ba09002ce8 3 *
Maggie17 0:65ba09002ce8 4 * Licensed under the Apache License, Version 2.0 (the "License");
Maggie17 0:65ba09002ce8 5 * you may not use this file except in compliance with the License.
Maggie17 0:65ba09002ce8 6 * You may obtain a copy of the License at
Maggie17 0:65ba09002ce8 7 *
Maggie17 0:65ba09002ce8 8 * http://www.apache.org/licenses/LICENSE-2.0
Maggie17 0:65ba09002ce8 9 *
Maggie17 0:65ba09002ce8 10 * Unless required by applicable law or agreed to in writing, software
Maggie17 0:65ba09002ce8 11 * distributed under the License is distributed on an "AS IS" BASIS,
Maggie17 0:65ba09002ce8 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Maggie17 0:65ba09002ce8 13 * See the License for the specific language governing permissions and
Maggie17 0:65ba09002ce8 14 * limitations under the License.
Maggie17 0:65ba09002ce8 15 */
Maggie17 0:65ba09002ce8 16
Maggie17 0:65ba09002ce8 17
Maggie17 0:65ba09002ce8 18 #include "EMW3162Interface.h"
Maggie17 0:65ba09002ce8 19
Maggie17 0:65ba09002ce8 20 // Various timeouts for different ESP8266 operations
Maggie17 0:65ba09002ce8 21 #define ESP8266_CONNECT_TIMEOUT 15000
Maggie17 0:65ba09002ce8 22 #define ESP8266_SEND_TIMEOUT 500
Maggie17 0:65ba09002ce8 23 #define ESP8266_RECV_TIMEOUT 0
Maggie17 0:65ba09002ce8 24 #define ESP8266_MISC_TIMEOUT 500
Maggie17 0:65ba09002ce8 25
Maggie17 0:65ba09002ce8 26
Maggie17 0:65ba09002ce8 27 // ESP8266Interface implementation
Maggie17 0:65ba09002ce8 28 ESP8266Interface::ESP8266Interface(PinName tx, PinName rx, bool debug)
Maggie17 0:65ba09002ce8 29 : _esp(tx, rx, debug)
Maggie17 0:65ba09002ce8 30 {
Maggie17 0:65ba09002ce8 31 memset(_ids, 0, sizeof(_ids));
Maggie17 0:65ba09002ce8 32 memset(_cbs, 0, sizeof(_cbs));
Maggie17 0:65ba09002ce8 33
Maggie17 0:65ba09002ce8 34 _esp.attach(this, &ESP8266Interface::event);
Maggie17 0:65ba09002ce8 35 }
Maggie17 0:65ba09002ce8 36
Maggie17 0:65ba09002ce8 37 int ESP8266Interface::connect(
Maggie17 0:65ba09002ce8 38 const char *ssid,
Maggie17 0:65ba09002ce8 39 const char *pass,
Maggie17 0:65ba09002ce8 40 nsapi_security_t security)
Maggie17 0:65ba09002ce8 41 {
Maggie17 0:65ba09002ce8 42 _esp.setTimeout(ESP8266_CONNECT_TIMEOUT);
Maggie17 0:65ba09002ce8 43
Maggie17 0:65ba09002ce8 44 if (!_esp.startup()) {
Maggie17 0:65ba09002ce8 45 return NSAPI_ERROR_DEVICE_ERROR;
Maggie17 0:65ba09002ce8 46 }
Maggie17 0:65ba09002ce8 47
Maggie17 0:65ba09002ce8 48 if (!_esp.dhcp(true)) {
Maggie17 0:65ba09002ce8 49 return NSAPI_ERROR_DHCP_FAILURE;
Maggie17 0:65ba09002ce8 50 }
Maggie17 0:65ba09002ce8 51
Maggie17 0:65ba09002ce8 52 if (!_esp.connect(ssid, pass)) {
Maggie17 0:65ba09002ce8 53 return NSAPI_ERROR_NO_CONNECTION;
Maggie17 0:65ba09002ce8 54 }
Maggie17 0:65ba09002ce8 55
Maggie17 0:65ba09002ce8 56 if (!_esp.getIPAddress()) {
Maggie17 0:65ba09002ce8 57 return NSAPI_ERROR_DHCP_FAILURE;
Maggie17 0:65ba09002ce8 58 }
Maggie17 0:65ba09002ce8 59
Maggie17 0:65ba09002ce8 60 return 0;
Maggie17 0:65ba09002ce8 61 }
Maggie17 0:65ba09002ce8 62
Maggie17 0:65ba09002ce8 63 int ESP8266Interface::disconnect()
Maggie17 0:65ba09002ce8 64 {
Maggie17 0:65ba09002ce8 65 _esp.setTimeout(ESP8266_MISC_TIMEOUT);
Maggie17 0:65ba09002ce8 66
Maggie17 0:65ba09002ce8 67 if (!_esp.disconnect()) {
Maggie17 0:65ba09002ce8 68 return NSAPI_ERROR_DEVICE_ERROR;
Maggie17 0:65ba09002ce8 69 }
Maggie17 0:65ba09002ce8 70
Maggie17 0:65ba09002ce8 71 return 0;
Maggie17 0:65ba09002ce8 72 }
Maggie17 0:65ba09002ce8 73
Maggie17 0:65ba09002ce8 74 const char* ESP8266Interface::get_ip_address()
Maggie17 0:65ba09002ce8 75 {
Maggie17 0:65ba09002ce8 76 return _esp.getIPAddress();
Maggie17 0:65ba09002ce8 77 }
Maggie17 0:65ba09002ce8 78
Maggie17 0:65ba09002ce8 79 const char* ESP8266Interface::get_mac_address()
Maggie17 0:65ba09002ce8 80 {
Maggie17 0:65ba09002ce8 81 return _esp.getMACAddress();
Maggie17 0:65ba09002ce8 82 }
Maggie17 0:65ba09002ce8 83
Maggie17 0:65ba09002ce8 84 struct ESP8266_socket {
Maggie17 0:65ba09002ce8 85 int id;
Maggie17 0:65ba09002ce8 86 int socketId;
Maggie17 0:65ba09002ce8 87 nsapi_protocol_t proto;
Maggie17 0:65ba09002ce8 88 bool connected;
Maggie17 0:65ba09002ce8 89 };
Maggie17 0:65ba09002ce8 90
Maggie17 0:65ba09002ce8 91 int ESP8266Interface::socket_open(void **handle, nsapi_protocol_t proto)
Maggie17 0:65ba09002ce8 92 {
Maggie17 0:65ba09002ce8 93 // Look for an unused socket
Maggie17 0:65ba09002ce8 94 int id = -1;
Maggie17 0:65ba09002ce8 95
Maggie17 0:65ba09002ce8 96 for (int i = 1; i < ESP8266_SOCKET_COUNT; i++) {
Maggie17 0:65ba09002ce8 97 if (!_ids[i]) {
Maggie17 0:65ba09002ce8 98 id = i;
Maggie17 0:65ba09002ce8 99 _ids[i] = true;
Maggie17 0:65ba09002ce8 100 break;
Maggie17 0:65ba09002ce8 101 }
Maggie17 0:65ba09002ce8 102 }
Maggie17 0:65ba09002ce8 103
Maggie17 0:65ba09002ce8 104 if (id == -1) {
Maggie17 0:65ba09002ce8 105 return NSAPI_ERROR_NO_SOCKET;
Maggie17 0:65ba09002ce8 106 }
Maggie17 0:65ba09002ce8 107
Maggie17 0:65ba09002ce8 108 struct ESP8266_socket *socket = new struct ESP8266_socket;
Maggie17 0:65ba09002ce8 109 if (!socket) {
Maggie17 0:65ba09002ce8 110 return NSAPI_ERROR_NO_SOCKET;
Maggie17 0:65ba09002ce8 111 }
Maggie17 0:65ba09002ce8 112
Maggie17 0:65ba09002ce8 113 socket->id = id;
Maggie17 0:65ba09002ce8 114 socket->socketId = 0;
Maggie17 0:65ba09002ce8 115 socket->proto = proto;
Maggie17 0:65ba09002ce8 116 socket->connected = false;
Maggie17 0:65ba09002ce8 117 *handle = socket;
Maggie17 0:65ba09002ce8 118 return 0;
Maggie17 0:65ba09002ce8 119 }
Maggie17 0:65ba09002ce8 120
Maggie17 0:65ba09002ce8 121 int ESP8266Interface::socket_close(void *handle)
Maggie17 0:65ba09002ce8 122 {
Maggie17 0:65ba09002ce8 123 struct ESP8266_socket *socket = (struct ESP8266_socket *)handle;
Maggie17 0:65ba09002ce8 124 int err = 0;
Maggie17 0:65ba09002ce8 125 _esp.setTimeout(ESP8266_MISC_TIMEOUT);
Maggie17 0:65ba09002ce8 126
Maggie17 0:65ba09002ce8 127 if (!_esp.close(socket->socketId)) {
Maggie17 0:65ba09002ce8 128 err = NSAPI_ERROR_DEVICE_ERROR;
Maggie17 0:65ba09002ce8 129 }
Maggie17 0:65ba09002ce8 130
Maggie17 0:65ba09002ce8 131 _ids[socket->id] = false;
Maggie17 0:65ba09002ce8 132 delete socket;
Maggie17 0:65ba09002ce8 133 return err;
Maggie17 0:65ba09002ce8 134 }
Maggie17 0:65ba09002ce8 135
Maggie17 0:65ba09002ce8 136 int ESP8266Interface::socket_bind(void *handle, const SocketAddress &address)
Maggie17 0:65ba09002ce8 137 {
Maggie17 0:65ba09002ce8 138 return NSAPI_ERROR_UNSUPPORTED;
Maggie17 0:65ba09002ce8 139 }
Maggie17 0:65ba09002ce8 140
Maggie17 0:65ba09002ce8 141 int ESP8266Interface::socket_listen(void *handle, int backlog)
Maggie17 0:65ba09002ce8 142 {
Maggie17 0:65ba09002ce8 143 return NSAPI_ERROR_UNSUPPORTED;
Maggie17 0:65ba09002ce8 144 }
Maggie17 0:65ba09002ce8 145
Maggie17 0:65ba09002ce8 146 int ESP8266Interface::socket_connect(void *handle, const SocketAddress &addr)
Maggie17 0:65ba09002ce8 147 {
Maggie17 0:65ba09002ce8 148 struct ESP8266_socket *socket = (struct ESP8266_socket *)handle;
Maggie17 0:65ba09002ce8 149 _esp.setTimeout(ESP8266_MISC_TIMEOUT);
Maggie17 0:65ba09002ce8 150
Maggie17 0:65ba09002ce8 151 const char *proto = (socket->proto == NSAPI_UDP) ? "UNICAST" : "CLIENT";
Maggie17 0:65ba09002ce8 152 socket -> socketId = _esp.open(proto, socket->id, addr.get_ip_address(), addr.get_port());
Maggie17 0:65ba09002ce8 153 if (!(socket -> socketId)) {
Maggie17 0:65ba09002ce8 154 return NSAPI_ERROR_DEVICE_ERROR;
Maggie17 0:65ba09002ce8 155 }
Maggie17 0:65ba09002ce8 156
Maggie17 0:65ba09002ce8 157 socket->connected = true;
Maggie17 0:65ba09002ce8 158 return 0;
Maggie17 0:65ba09002ce8 159 }
Maggie17 0:65ba09002ce8 160
Maggie17 0:65ba09002ce8 161 int ESP8266Interface::socket_accept(void **handle, void *server)
Maggie17 0:65ba09002ce8 162 {
Maggie17 0:65ba09002ce8 163 return NSAPI_ERROR_UNSUPPORTED;
Maggie17 0:65ba09002ce8 164 }
Maggie17 0:65ba09002ce8 165
Maggie17 0:65ba09002ce8 166 int ESP8266Interface::socket_send(void *handle, const void *data, unsigned size)
Maggie17 0:65ba09002ce8 167 {
Maggie17 0:65ba09002ce8 168 struct ESP8266_socket *socket = (struct ESP8266_socket *)handle;
Maggie17 0:65ba09002ce8 169 _esp.setTimeout(ESP8266_SEND_TIMEOUT);
Maggie17 0:65ba09002ce8 170
Maggie17 0:65ba09002ce8 171 if (!_esp.send(socket->socketId, data, size)) {
Maggie17 0:65ba09002ce8 172 return NSAPI_ERROR_DEVICE_ERROR;
Maggie17 0:65ba09002ce8 173 }
Maggie17 0:65ba09002ce8 174
Maggie17 0:65ba09002ce8 175 return size;
Maggie17 0:65ba09002ce8 176 }
Maggie17 0:65ba09002ce8 177
Maggie17 0:65ba09002ce8 178 int ESP8266Interface::socket_recv(void *handle, void *data, unsigned size)
Maggie17 0:65ba09002ce8 179 {
Maggie17 0:65ba09002ce8 180 struct ESP8266_socket *socket = (struct ESP8266_socket *)handle;
Maggie17 0:65ba09002ce8 181 _esp.setTimeout(ESP8266_RECV_TIMEOUT);
Maggie17 0:65ba09002ce8 182
Maggie17 0:65ba09002ce8 183 int32_t recv = _esp.recv(socket->socketId, data, size);
Maggie17 0:65ba09002ce8 184 if (recv < 0) {
Maggie17 0:65ba09002ce8 185 return NSAPI_ERROR_WOULD_BLOCK;
Maggie17 0:65ba09002ce8 186 }
Maggie17 0:65ba09002ce8 187
Maggie17 0:65ba09002ce8 188 return recv;
Maggie17 0:65ba09002ce8 189 }
Maggie17 0:65ba09002ce8 190
Maggie17 0:65ba09002ce8 191 int ESP8266Interface::socket_sendto(void *handle, const SocketAddress &addr, const void *data, unsigned size)
Maggie17 0:65ba09002ce8 192 {
Maggie17 0:65ba09002ce8 193 struct ESP8266_socket *socket = (struct ESP8266_socket *)handle;
Maggie17 0:65ba09002ce8 194 if (!socket->connected) {
Maggie17 0:65ba09002ce8 195 int err = socket_connect(socket, addr);
Maggie17 0:65ba09002ce8 196 if (err < 0) {
Maggie17 0:65ba09002ce8 197 return err;
Maggie17 0:65ba09002ce8 198 }
Maggie17 0:65ba09002ce8 199 }
Maggie17 0:65ba09002ce8 200
Maggie17 0:65ba09002ce8 201 return socket_send(socket, data, size);
Maggie17 0:65ba09002ce8 202 }
Maggie17 0:65ba09002ce8 203
Maggie17 0:65ba09002ce8 204 int ESP8266Interface::socket_recvfrom(void *handle, SocketAddress *addr, void *data, unsigned size)
Maggie17 0:65ba09002ce8 205 {
Maggie17 0:65ba09002ce8 206 struct ESP8266_socket *socket = (struct ESP8266_socket *)handle;
Maggie17 0:65ba09002ce8 207 return socket_recv(socket, data, size);
Maggie17 0:65ba09002ce8 208 }
Maggie17 0:65ba09002ce8 209
Maggie17 0:65ba09002ce8 210 void ESP8266Interface::socket_attach(void *handle, void (*callback)(void *), void *data)
Maggie17 0:65ba09002ce8 211 {
Maggie17 0:65ba09002ce8 212 struct ESP8266_socket *socket = (struct ESP8266_socket *)handle;
Maggie17 0:65ba09002ce8 213 _cbs[socket->id].callback = callback;
Maggie17 0:65ba09002ce8 214 _cbs[socket->id].data = data;
Maggie17 0:65ba09002ce8 215 }
Maggie17 0:65ba09002ce8 216
Maggie17 0:65ba09002ce8 217 void ESP8266Interface::event() {
Maggie17 0:65ba09002ce8 218 for (int i = 0; i < ESP8266_SOCKET_COUNT; i++) {
Maggie17 0:65ba09002ce8 219 if (_cbs[i].callback) {
Maggie17 0:65ba09002ce8 220 _cbs[i].callback(_cbs[i].data);
Maggie17 0:65ba09002ce8 221 }
Maggie17 0:65ba09002ce8 222 }
Maggie17 0:65ba09002ce8 223 }