Vergil Cola / Mbed OS MQTTGateway2

Fork of my original MQTTGateway

Dependencies:   mbed-http

easy-connect/esp8266-driver/ESP8266Interface.cpp@0:a1734fe1ec4b, 2017-04-08 (annotated)

Committer:
vpcola
Date:
Sat Apr 08 14:43:14 2017 +0000
Revision:
0:a1734fe1ec4b
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vpcola 0:a1734fe1ec4b 1 /* ESP8266 implementation of NetworkInterfaceAPI
vpcola 0:a1734fe1ec4b 2 * Copyright (c) 2015 ARM Limited
vpcola 0:a1734fe1ec4b 3 *
vpcola 0:a1734fe1ec4b 4 * Licensed under the Apache License, Version 2.0 (the "License");
vpcola 0:a1734fe1ec4b 5 * you may not use this file except in compliance with the License.
vpcola 0:a1734fe1ec4b 6 * You may obtain a copy of the License at
vpcola 0:a1734fe1ec4b 7 *
vpcola 0:a1734fe1ec4b 8 * http://www.apache.org/licenses/LICENSE-2.0
vpcola 0:a1734fe1ec4b 9 *
vpcola 0:a1734fe1ec4b 10 * Unless required by applicable law or agreed to in writing, software
vpcola 0:a1734fe1ec4b 11 * distributed under the License is distributed on an "AS IS" BASIS,
vpcola 0:a1734fe1ec4b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
vpcola 0:a1734fe1ec4b 13 * See the License for the specific language governing permissions and
vpcola 0:a1734fe1ec4b 14 * limitations under the License.
vpcola 0:a1734fe1ec4b 15 */
vpcola 0:a1734fe1ec4b 16
vpcola 0:a1734fe1ec4b 17 #include <string.h>
vpcola 0:a1734fe1ec4b 18 #include "ESP8266Interface.h"
vpcola 0:a1734fe1ec4b 19
vpcola 0:a1734fe1ec4b 20 // Various timeouts for different ESP8266 operations
vpcola 0:a1734fe1ec4b 21 #define ESP8266_CONNECT_TIMEOUT 15000
vpcola 0:a1734fe1ec4b 22 #define ESP8266_SEND_TIMEOUT 500
vpcola 0:a1734fe1ec4b 23 #define ESP8266_RECV_TIMEOUT 0
vpcola 0:a1734fe1ec4b 24 #define ESP8266_MISC_TIMEOUT 500
vpcola 0:a1734fe1ec4b 25
vpcola 0:a1734fe1ec4b 26 // ESP8266Interface implementation
vpcola 0:a1734fe1ec4b 27 ESP8266Interface::ESP8266Interface(PinName tx, PinName rx, bool debug)
vpcola 0:a1734fe1ec4b 28 : _esp(tx, rx, debug)
vpcola 0:a1734fe1ec4b 29 {
vpcola 0:a1734fe1ec4b 30 memset(_ids, 0, sizeof(_ids));
vpcola 0:a1734fe1ec4b 31 memset(_cbs, 0, sizeof(_cbs));
vpcola 0:a1734fe1ec4b 32
vpcola 0:a1734fe1ec4b 33 _esp.attach(this, &ESP8266Interface::event);
vpcola 0:a1734fe1ec4b 34 }
vpcola 0:a1734fe1ec4b 35
vpcola 0:a1734fe1ec4b 36 int ESP8266Interface::connect(const char *ssid, const char *pass, nsapi_security_t security,
vpcola 0:a1734fe1ec4b 37 uint8_t channel)
vpcola 0:a1734fe1ec4b 38 {
vpcola 0:a1734fe1ec4b 39 if (channel != 0) {
vpcola 0:a1734fe1ec4b 40 return NSAPI_ERROR_UNSUPPORTED;
vpcola 0:a1734fe1ec4b 41 }
vpcola 0:a1734fe1ec4b 42
vpcola 0:a1734fe1ec4b 43 set_credentials(ssid, pass, security);
vpcola 0:a1734fe1ec4b 44 return connect();
vpcola 0:a1734fe1ec4b 45 }
vpcola 0:a1734fe1ec4b 46
vpcola 0:a1734fe1ec4b 47 int ESP8266Interface::connect()
vpcola 0:a1734fe1ec4b 48 {
vpcola 0:a1734fe1ec4b 49 _esp.setTimeout(ESP8266_CONNECT_TIMEOUT);
vpcola 0:a1734fe1ec4b 50
vpcola 0:a1734fe1ec4b 51 if (!_esp.startup(3)) {
vpcola 0:a1734fe1ec4b 52 return NSAPI_ERROR_DEVICE_ERROR;
vpcola 0:a1734fe1ec4b 53 }
vpcola 0:a1734fe1ec4b 54
vpcola 0:a1734fe1ec4b 55 if (!_esp.dhcp(true, 1)) {
vpcola 0:a1734fe1ec4b 56 return NSAPI_ERROR_DHCP_FAILURE;
vpcola 0:a1734fe1ec4b 57 }
vpcola 0:a1734fe1ec4b 58
vpcola 0:a1734fe1ec4b 59 if (!_esp.connect(ap_ssid, ap_pass)) {
vpcola 0:a1734fe1ec4b 60 return NSAPI_ERROR_NO_CONNECTION;
vpcola 0:a1734fe1ec4b 61 }
vpcola 0:a1734fe1ec4b 62
vpcola 0:a1734fe1ec4b 63 if (!_esp.getIPAddress()) {
vpcola 0:a1734fe1ec4b 64 return NSAPI_ERROR_DHCP_FAILURE;
vpcola 0:a1734fe1ec4b 65 }
vpcola 0:a1734fe1ec4b 66
vpcola 0:a1734fe1ec4b 67 return NSAPI_ERROR_OK;
vpcola 0:a1734fe1ec4b 68 }
vpcola 0:a1734fe1ec4b 69
vpcola 0:a1734fe1ec4b 70 int ESP8266Interface::set_credentials(const char *ssid, const char *pass, nsapi_security_t security)
vpcola 0:a1734fe1ec4b 71 {
vpcola 0:a1734fe1ec4b 72 memset(ap_ssid, 0, sizeof(ap_ssid));
vpcola 0:a1734fe1ec4b 73 strncpy(ap_ssid, ssid, sizeof(ap_ssid));
vpcola 0:a1734fe1ec4b 74
vpcola 0:a1734fe1ec4b 75 memset(ap_pass, 0, sizeof(ap_pass));
vpcola 0:a1734fe1ec4b 76 strncpy(ap_pass, pass, sizeof(ap_pass));
vpcola 0:a1734fe1ec4b 77
vpcola 0:a1734fe1ec4b 78 ap_sec = security;
vpcola 0:a1734fe1ec4b 79
vpcola 0:a1734fe1ec4b 80 return 0;
vpcola 0:a1734fe1ec4b 81 }
vpcola 0:a1734fe1ec4b 82
vpcola 0:a1734fe1ec4b 83 int ESP8266Interface::set_channel(uint8_t channel)
vpcola 0:a1734fe1ec4b 84 {
vpcola 0:a1734fe1ec4b 85 return NSAPI_ERROR_UNSUPPORTED;
vpcola 0:a1734fe1ec4b 86 }
vpcola 0:a1734fe1ec4b 87
vpcola 0:a1734fe1ec4b 88
vpcola 0:a1734fe1ec4b 89 int ESP8266Interface::disconnect()
vpcola 0:a1734fe1ec4b 90 {
vpcola 0:a1734fe1ec4b 91 _esp.setTimeout(ESP8266_MISC_TIMEOUT);
vpcola 0:a1734fe1ec4b 92
vpcola 0:a1734fe1ec4b 93 if (!_esp.disconnect()) {
vpcola 0:a1734fe1ec4b 94 return NSAPI_ERROR_DEVICE_ERROR;
vpcola 0:a1734fe1ec4b 95 }
vpcola 0:a1734fe1ec4b 96
vpcola 0:a1734fe1ec4b 97 return NSAPI_ERROR_OK;
vpcola 0:a1734fe1ec4b 98 }
vpcola 0:a1734fe1ec4b 99
vpcola 0:a1734fe1ec4b 100 const char *ESP8266Interface::get_ip_address()
vpcola 0:a1734fe1ec4b 101 {
vpcola 0:a1734fe1ec4b 102 return _esp.getIPAddress();
vpcola 0:a1734fe1ec4b 103 }
vpcola 0:a1734fe1ec4b 104
vpcola 0:a1734fe1ec4b 105 const char *ESP8266Interface::get_mac_address()
vpcola 0:a1734fe1ec4b 106 {
vpcola 0:a1734fe1ec4b 107 return _esp.getMACAddress();
vpcola 0:a1734fe1ec4b 108 }
vpcola 0:a1734fe1ec4b 109
vpcola 0:a1734fe1ec4b 110 const char *ESP8266Interface::get_gateway()
vpcola 0:a1734fe1ec4b 111 {
vpcola 0:a1734fe1ec4b 112 return _esp.getGateway();
vpcola 0:a1734fe1ec4b 113 }
vpcola 0:a1734fe1ec4b 114
vpcola 0:a1734fe1ec4b 115 const char *ESP8266Interface::get_netmask()
vpcola 0:a1734fe1ec4b 116 {
vpcola 0:a1734fe1ec4b 117 return _esp.getNetmask();
vpcola 0:a1734fe1ec4b 118 }
vpcola 0:a1734fe1ec4b 119
vpcola 0:a1734fe1ec4b 120 int8_t ESP8266Interface::get_rssi()
vpcola 0:a1734fe1ec4b 121 {
vpcola 0:a1734fe1ec4b 122 return _esp.getRSSI();
vpcola 0:a1734fe1ec4b 123 }
vpcola 0:a1734fe1ec4b 124
vpcola 0:a1734fe1ec4b 125 int ESP8266Interface::scan(WiFiAccessPoint *res, unsigned count)
vpcola 0:a1734fe1ec4b 126 {
vpcola 0:a1734fe1ec4b 127 return _esp.scan(res, count);
vpcola 0:a1734fe1ec4b 128 }
vpcola 0:a1734fe1ec4b 129
vpcola 0:a1734fe1ec4b 130 struct esp8266_socket {
vpcola 0:a1734fe1ec4b 131 int id;
vpcola 0:a1734fe1ec4b 132 nsapi_protocol_t proto;
vpcola 0:a1734fe1ec4b 133 bool connected;
vpcola 0:a1734fe1ec4b 134 SocketAddress addr;
vpcola 0:a1734fe1ec4b 135 };
vpcola 0:a1734fe1ec4b 136
vpcola 0:a1734fe1ec4b 137 int ESP8266Interface::socket_open(void **handle, nsapi_protocol_t proto)
vpcola 0:a1734fe1ec4b 138 {
vpcola 0:a1734fe1ec4b 139 // Look for an unused socket
vpcola 0:a1734fe1ec4b 140 int id = -1;
vpcola 0:a1734fe1ec4b 141
vpcola 0:a1734fe1ec4b 142 for (int i = 0; i < ESP8266_SOCKET_COUNT; i++) {
vpcola 0:a1734fe1ec4b 143 if (!_ids[i]) {
vpcola 0:a1734fe1ec4b 144 id = i;
vpcola 0:a1734fe1ec4b 145 _ids[i] = true;
vpcola 0:a1734fe1ec4b 146 break;
vpcola 0:a1734fe1ec4b 147 }
vpcola 0:a1734fe1ec4b 148 }
vpcola 0:a1734fe1ec4b 149
vpcola 0:a1734fe1ec4b 150 if (id == -1) {
vpcola 0:a1734fe1ec4b 151 return NSAPI_ERROR_NO_SOCKET;
vpcola 0:a1734fe1ec4b 152 }
vpcola 0:a1734fe1ec4b 153
vpcola 0:a1734fe1ec4b 154 struct esp8266_socket *socket = new struct esp8266_socket;
vpcola 0:a1734fe1ec4b 155 if (!socket) {
vpcola 0:a1734fe1ec4b 156 return NSAPI_ERROR_NO_SOCKET;
vpcola 0:a1734fe1ec4b 157 }
vpcola 0:a1734fe1ec4b 158
vpcola 0:a1734fe1ec4b 159 socket->id = id;
vpcola 0:a1734fe1ec4b 160 socket->proto = proto;
vpcola 0:a1734fe1ec4b 161 socket->connected = false;
vpcola 0:a1734fe1ec4b 162 *handle = socket;
vpcola 0:a1734fe1ec4b 163 return 0;
vpcola 0:a1734fe1ec4b 164 }
vpcola 0:a1734fe1ec4b 165
vpcola 0:a1734fe1ec4b 166 int ESP8266Interface::socket_close(void *handle)
vpcola 0:a1734fe1ec4b 167 {
vpcola 0:a1734fe1ec4b 168 struct esp8266_socket *socket = (struct esp8266_socket *)handle;
vpcola 0:a1734fe1ec4b 169 int err = 0;
vpcola 0:a1734fe1ec4b 170 _esp.setTimeout(ESP8266_MISC_TIMEOUT);
vpcola 0:a1734fe1ec4b 171
vpcola 0:a1734fe1ec4b 172 if (!_esp.close(socket->id)) {
vpcola 0:a1734fe1ec4b 173 err = NSAPI_ERROR_DEVICE_ERROR;
vpcola 0:a1734fe1ec4b 174 }
vpcola 0:a1734fe1ec4b 175
vpcola 0:a1734fe1ec4b 176 _ids[socket->id] = false;
vpcola 0:a1734fe1ec4b 177 delete socket;
vpcola 0:a1734fe1ec4b 178 return err;
vpcola 0:a1734fe1ec4b 179 }
vpcola 0:a1734fe1ec4b 180
vpcola 0:a1734fe1ec4b 181 int ESP8266Interface::socket_bind(void *handle, const SocketAddress &address)
vpcola 0:a1734fe1ec4b 182 {
vpcola 0:a1734fe1ec4b 183 return NSAPI_ERROR_UNSUPPORTED;
vpcola 0:a1734fe1ec4b 184 }
vpcola 0:a1734fe1ec4b 185
vpcola 0:a1734fe1ec4b 186 int ESP8266Interface::socket_listen(void *handle, int backlog)
vpcola 0:a1734fe1ec4b 187 {
vpcola 0:a1734fe1ec4b 188 return NSAPI_ERROR_UNSUPPORTED;
vpcola 0:a1734fe1ec4b 189 }
vpcola 0:a1734fe1ec4b 190
vpcola 0:a1734fe1ec4b 191 int ESP8266Interface::socket_connect(void *handle, const SocketAddress &addr)
vpcola 0:a1734fe1ec4b 192 {
vpcola 0:a1734fe1ec4b 193 struct esp8266_socket *socket = (struct esp8266_socket *)handle;
vpcola 0:a1734fe1ec4b 194 _esp.setTimeout(ESP8266_MISC_TIMEOUT);
vpcola 0:a1734fe1ec4b 195
vpcola 0:a1734fe1ec4b 196 const char *proto = (socket->proto == NSAPI_UDP) ? "UDP" : "TCP";
vpcola 0:a1734fe1ec4b 197 if (!_esp.open(proto, socket->id, addr.get_ip_address(), addr.get_port())) {
vpcola 0:a1734fe1ec4b 198 return NSAPI_ERROR_DEVICE_ERROR;
vpcola 0:a1734fe1ec4b 199 }
vpcola 0:a1734fe1ec4b 200
vpcola 0:a1734fe1ec4b 201 socket->connected = true;
vpcola 0:a1734fe1ec4b 202 return 0;
vpcola 0:a1734fe1ec4b 203 }
vpcola 0:a1734fe1ec4b 204
vpcola 0:a1734fe1ec4b 205 int ESP8266Interface::socket_accept(void *server, void **socket, SocketAddress *addr)
vpcola 0:a1734fe1ec4b 206 {
vpcola 0:a1734fe1ec4b 207 return NSAPI_ERROR_UNSUPPORTED;
vpcola 0:a1734fe1ec4b 208 }
vpcola 0:a1734fe1ec4b 209
vpcola 0:a1734fe1ec4b 210 int ESP8266Interface::socket_send(void *handle, const void *data, unsigned size)
vpcola 0:a1734fe1ec4b 211 {
vpcola 0:a1734fe1ec4b 212 struct esp8266_socket *socket = (struct esp8266_socket *)handle;
vpcola 0:a1734fe1ec4b 213 _esp.setTimeout(ESP8266_SEND_TIMEOUT);
vpcola 0:a1734fe1ec4b 214
vpcola 0:a1734fe1ec4b 215 if (!_esp.send(socket->id, data, size)) {
vpcola 0:a1734fe1ec4b 216 return NSAPI_ERROR_DEVICE_ERROR;
vpcola 0:a1734fe1ec4b 217 }
vpcola 0:a1734fe1ec4b 218
vpcola 0:a1734fe1ec4b 219 return size;
vpcola 0:a1734fe1ec4b 220 }
vpcola 0:a1734fe1ec4b 221
vpcola 0:a1734fe1ec4b 222 int ESP8266Interface::socket_recv(void *handle, void *data, unsigned size)
vpcola 0:a1734fe1ec4b 223 {
vpcola 0:a1734fe1ec4b 224 struct esp8266_socket *socket = (struct esp8266_socket *)handle;
vpcola 0:a1734fe1ec4b 225 _esp.setTimeout(ESP8266_RECV_TIMEOUT);
vpcola 0:a1734fe1ec4b 226
vpcola 0:a1734fe1ec4b 227 int32_t recv = _esp.recv(socket->id, data, size);
vpcola 0:a1734fe1ec4b 228 if (recv < 0) {
vpcola 0:a1734fe1ec4b 229 return NSAPI_ERROR_WOULD_BLOCK;
vpcola 0:a1734fe1ec4b 230 }
vpcola 0:a1734fe1ec4b 231
vpcola 0:a1734fe1ec4b 232 return recv;
vpcola 0:a1734fe1ec4b 233 }
vpcola 0:a1734fe1ec4b 234
vpcola 0:a1734fe1ec4b 235 int ESP8266Interface::socket_sendto(void *handle, const SocketAddress &addr, const void *data, unsigned size)
vpcola 0:a1734fe1ec4b 236 {
vpcola 0:a1734fe1ec4b 237 struct esp8266_socket *socket = (struct esp8266_socket *)handle;
vpcola 0:a1734fe1ec4b 238
vpcola 0:a1734fe1ec4b 239 if (socket->connected && socket->addr != addr) {
vpcola 0:a1734fe1ec4b 240 _esp.setTimeout(ESP8266_MISC_TIMEOUT);
vpcola 0:a1734fe1ec4b 241 if (!_esp.close(socket->id)) {
vpcola 0:a1734fe1ec4b 242 return NSAPI_ERROR_DEVICE_ERROR;
vpcola 0:a1734fe1ec4b 243 }
vpcola 0:a1734fe1ec4b 244 socket->connected = false;
vpcola 0:a1734fe1ec4b 245 }
vpcola 0:a1734fe1ec4b 246
vpcola 0:a1734fe1ec4b 247 if (!socket->connected) {
vpcola 0:a1734fe1ec4b 248 int err = socket_connect(socket, addr);
vpcola 0:a1734fe1ec4b 249 if (err < 0) {
vpcola 0:a1734fe1ec4b 250 return err;
vpcola 0:a1734fe1ec4b 251 }
vpcola 0:a1734fe1ec4b 252 socket->addr = addr;
vpcola 0:a1734fe1ec4b 253 }
vpcola 0:a1734fe1ec4b 254
vpcola 0:a1734fe1ec4b 255 return socket_send(socket, data, size);
vpcola 0:a1734fe1ec4b 256 }
vpcola 0:a1734fe1ec4b 257
vpcola 0:a1734fe1ec4b 258 int ESP8266Interface::socket_recvfrom(void *handle, SocketAddress *addr, void *data, unsigned size)
vpcola 0:a1734fe1ec4b 259 {
vpcola 0:a1734fe1ec4b 260 struct esp8266_socket *socket = (struct esp8266_socket *)handle;
vpcola 0:a1734fe1ec4b 261 int ret = socket_recv(socket, data, size);
vpcola 0:a1734fe1ec4b 262 if (ret >= 0 && addr) {
vpcola 0:a1734fe1ec4b 263 *addr = socket->addr;
vpcola 0:a1734fe1ec4b 264 }
vpcola 0:a1734fe1ec4b 265
vpcola 0:a1734fe1ec4b 266 return ret;
vpcola 0:a1734fe1ec4b 267 }
vpcola 0:a1734fe1ec4b 268
vpcola 0:a1734fe1ec4b 269 void ESP8266Interface::socket_attach(void *handle, void (*callback)(void *), void *data)
vpcola 0:a1734fe1ec4b 270 {
vpcola 0:a1734fe1ec4b 271 struct esp8266_socket *socket = (struct esp8266_socket *)handle;
vpcola 0:a1734fe1ec4b 272 _cbs[socket->id].callback = callback;
vpcola 0:a1734fe1ec4b 273 _cbs[socket->id].data = data;
vpcola 0:a1734fe1ec4b 274 }
vpcola 0:a1734fe1ec4b 275
vpcola 0:a1734fe1ec4b 276 void ESP8266Interface::event() {
vpcola 0:a1734fe1ec4b 277 for (int i = 0; i < ESP8266_SOCKET_COUNT; i++) {
vpcola 0:a1734fe1ec4b 278 if (_cbs[i].callback) {
vpcola 0:a1734fe1ec4b 279 _cbs[i].callback(_cbs[i].data);
vpcola 0:a1734fe1ec4b 280 }
vpcola 0:a1734fe1ec4b 281 }
vpcola 0:a1734fe1ec4b 282 }