emw3162 driver for mbed os 5
Fork of emw3162-driver by
emw3162/EMW3162.cpp@3:a6f80a95b039, 2016-11-17 (annotated)
- Committer:
- Maggie17
- Date:
- Thu Nov 17 03:52:22 2016 +0000
- Revision:
- 3:a6f80a95b039
- Parent:
- 2:fb6251306b21
emw3162 driver for mbed os 5
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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Maggie17 | 2:fb6251306b21 | 1 | /* EMW3162 Example |
Maggie17 | 0:2d5090e1ceb4 | 2 | * Copyright (c) 2015 ARM Limited |
Maggie17 | 0:2d5090e1ceb4 | 3 | * |
Maggie17 | 0:2d5090e1ceb4 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
Maggie17 | 0:2d5090e1ceb4 | 5 | * you may not use this file except in compliance with the License. |
Maggie17 | 0:2d5090e1ceb4 | 6 | * You may obtain a copy of the License at |
Maggie17 | 0:2d5090e1ceb4 | 7 | * |
Maggie17 | 0:2d5090e1ceb4 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
Maggie17 | 0:2d5090e1ceb4 | 9 | * |
Maggie17 | 0:2d5090e1ceb4 | 10 | * Unless required by applicable law or agreed to in writing, software |
Maggie17 | 0:2d5090e1ceb4 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
Maggie17 | 0:2d5090e1ceb4 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
Maggie17 | 0:2d5090e1ceb4 | 13 | * See the License for the specific language governing permissions and |
Maggie17 | 0:2d5090e1ceb4 | 14 | * limitations under the License. |
Maggie17 | 0:2d5090e1ceb4 | 15 | */ |
Maggie17 | 0:2d5090e1ceb4 | 16 | |
Maggie17 | 0:2d5090e1ceb4 | 17 | #include "EMW3162.h" |
Maggie17 | 0:2d5090e1ceb4 | 18 | |
Maggie17 | 2:fb6251306b21 | 19 | EMW3162::EMW3162(PinName tx, PinName rx, bool debug) |
Maggie17 | 0:2d5090e1ceb4 | 20 | : _serial(tx, rx, 1024), _parser(_serial) |
Maggie17 | 0:2d5090e1ceb4 | 21 | , _packets(0), _packets_end(&_packets) |
Maggie17 | 0:2d5090e1ceb4 | 22 | { |
Maggie17 | 0:2d5090e1ceb4 | 23 | _serial.baud(115200); |
Maggie17 | 0:2d5090e1ceb4 | 24 | _parser.debugOn(debug); |
Maggie17 | 0:2d5090e1ceb4 | 25 | } |
Maggie17 | 0:2d5090e1ceb4 | 26 | |
Maggie17 | 2:fb6251306b21 | 27 | bool EMW3162::startup(void) |
Maggie17 | 0:2d5090e1ceb4 | 28 | { |
Maggie17 | 0:2d5090e1ceb4 | 29 | bool success = reset("FACTORY"); |
Maggie17 | 0:2d5090e1ceb4 | 30 | |
Maggie17 | 2:fb6251306b21 | 31 | _parser.oob("+EVENT=SOCKET", this, &EMW3162::_packet_handler); |
Maggie17 | 0:2d5090e1ceb4 | 32 | |
Maggie17 | 0:2d5090e1ceb4 | 33 | return success; |
Maggie17 | 0:2d5090e1ceb4 | 34 | } |
Maggie17 | 0:2d5090e1ceb4 | 35 | |
Maggie17 | 2:fb6251306b21 | 36 | bool EMW3162::reset(const char *reset) |
Maggie17 | 0:2d5090e1ceb4 | 37 | { |
Maggie17 | 0:2d5090e1ceb4 | 38 | for (int i = 0; i < 2; i++) { |
Maggie17 | 0:2d5090e1ceb4 | 39 | if (_parser.send("AT+%s", reset) |
Maggie17 | 0:2d5090e1ceb4 | 40 | && _parser.recv("+OK")) { |
Maggie17 | 0:2d5090e1ceb4 | 41 | return true; |
Maggie17 | 0:2d5090e1ceb4 | 42 | } |
Maggie17 | 0:2d5090e1ceb4 | 43 | } |
Maggie17 | 0:2d5090e1ceb4 | 44 | |
Maggie17 | 0:2d5090e1ceb4 | 45 | return false; |
Maggie17 | 0:2d5090e1ceb4 | 46 | } |
Maggie17 | 0:2d5090e1ceb4 | 47 | |
Maggie17 | 2:fb6251306b21 | 48 | bool EMW3162::dhcp(bool enabled) |
Maggie17 | 0:2d5090e1ceb4 | 49 | { |
Maggie17 | 0:2d5090e1ceb4 | 50 | return _parser.send("AT+DHCP=%s", enabled ? "ON":"OFF") |
Maggie17 | 0:2d5090e1ceb4 | 51 | && _parser.recv("+OK"); |
Maggie17 | 0:2d5090e1ceb4 | 52 | } |
Maggie17 | 0:2d5090e1ceb4 | 53 | |
Maggie17 | 2:fb6251306b21 | 54 | bool EMW3162::connect(const char *ap, const char *passPhrase) |
Maggie17 | 0:2d5090e1ceb4 | 55 | { |
Maggie17 | 0:2d5090e1ceb4 | 56 | return _parser.send("AT+WSTA=%s,%s", ap, passPhrase) |
Maggie17 | 0:2d5090e1ceb4 | 57 | && _parser.recv("+OK") |
Maggie17 | 0:2d5090e1ceb4 | 58 | && _parser.send("AT+EVENT=ON") |
Maggie17 | 0:2d5090e1ceb4 | 59 | && _parser.recv("+OK") |
Maggie17 | 0:2d5090e1ceb4 | 60 | && _parser.recv("+EVENT=WIFI_LINK,STATION_UP"); |
Maggie17 | 0:2d5090e1ceb4 | 61 | } |
Maggie17 | 0:2d5090e1ceb4 | 62 | |
Maggie17 | 2:fb6251306b21 | 63 | bool EMW3162::disconnect(void) |
Maggie17 | 0:2d5090e1ceb4 | 64 | { |
Maggie17 | 0:2d5090e1ceb4 | 65 | |
Maggie17 | 0:2d5090e1ceb4 | 66 | return _parser.send("AT+WLANF=STA,OFF") |
Maggie17 | 0:2d5090e1ceb4 | 67 | && _parser.recv("+OK") |
Maggie17 | 0:2d5090e1ceb4 | 68 | && _parser.recv("+EVENT=WIFI_LINK,STATION_DOWN") |
Maggie17 | 0:2d5090e1ceb4 | 69 | && _parser.send("AT+EVENT=OFF") |
Maggie17 | 0:2d5090e1ceb4 | 70 | && _parser.recv("+OK"); |
Maggie17 | 0:2d5090e1ceb4 | 71 | } |
Maggie17 | 0:2d5090e1ceb4 | 72 | |
Maggie17 | 2:fb6251306b21 | 73 | const char *EMW3162::getIPAddress(void) |
Maggie17 | 0:2d5090e1ceb4 | 74 | { |
Maggie17 | 0:2d5090e1ceb4 | 75 | if (!(_parser.send("AT+IPCONFIG") |
Maggie17 | 0:2d5090e1ceb4 | 76 | && _parser.recv("%*[^,],%*[^,],%*[^,],%[^,]%*[^#]#", _ip_buffer))) { |
Maggie17 | 0:2d5090e1ceb4 | 77 | return 0; |
Maggie17 | 0:2d5090e1ceb4 | 78 | } |
Maggie17 | 0:2d5090e1ceb4 | 79 | |
Maggie17 | 0:2d5090e1ceb4 | 80 | return _ip_buffer; |
Maggie17 | 0:2d5090e1ceb4 | 81 | } |
Maggie17 | 0:2d5090e1ceb4 | 82 | |
Maggie17 | 2:fb6251306b21 | 83 | const char *EMW3162::getMACAddress(void) |
Maggie17 | 0:2d5090e1ceb4 | 84 | { |
Maggie17 | 0:2d5090e1ceb4 | 85 | if (!(_parser.send("AT+WMAC") |
Maggie17 | 0:2d5090e1ceb4 | 86 | && _parser.recv("%*[^=]=%[^#]#", _mac_buffer))) { |
Maggie17 | 0:2d5090e1ceb4 | 87 | return 0; |
Maggie17 | 0:2d5090e1ceb4 | 88 | } |
Maggie17 | 0:2d5090e1ceb4 | 89 | |
Maggie17 | 0:2d5090e1ceb4 | 90 | return _mac_buffer; |
Maggie17 | 0:2d5090e1ceb4 | 91 | } |
Maggie17 | 0:2d5090e1ceb4 | 92 | |
Maggie17 | 2:fb6251306b21 | 93 | bool EMW3162::isConnected(void) |
Maggie17 | 0:2d5090e1ceb4 | 94 | { |
Maggie17 | 0:2d5090e1ceb4 | 95 | return getIPAddress() != 0; |
Maggie17 | 0:2d5090e1ceb4 | 96 | } |
Maggie17 | 0:2d5090e1ceb4 | 97 | |
Maggie17 | 2:fb6251306b21 | 98 | int EMW3162::open(const char *type, int id, const char* addr, int port) |
Maggie17 | 0:2d5090e1ceb4 | 99 | { |
Maggie17 | 0:2d5090e1ceb4 | 100 | int state1 = 0, state2 = 0; |
Maggie17 | 0:2d5090e1ceb4 | 101 | state1 = _parser.send("AT+CON1=%s,%d,%d,%s", type, id, port, addr) |
Maggie17 | 0:2d5090e1ceb4 | 102 | && _parser.recv("+OK") |
Maggie17 | 0:2d5090e1ceb4 | 103 | && _parser.send("AT+SAVE") |
Maggie17 | 0:2d5090e1ceb4 | 104 | && _parser.recv("+OK") |
Maggie17 | 0:2d5090e1ceb4 | 105 | && reset("REBOOT") |
Maggie17 | 0:2d5090e1ceb4 | 106 | && _parser.recv("+EVENT=REBOOT"); |
Maggie17 | 0:2d5090e1ceb4 | 107 | |
Maggie17 | 0:2d5090e1ceb4 | 108 | wait(3); |
Maggie17 | 0:2d5090e1ceb4 | 109 | char conType[10]; // UDP/TCP connection type: SERVER, CLIENT, BROADCAST, UNICAST |
Maggie17 | 0:2d5090e1ceb4 | 110 | int socketId; // UDP/TCP socket id |
Maggie17 | 0:2d5090e1ceb4 | 111 | |
Maggie17 | 0:2d5090e1ceb4 | 112 | // Receive wifi connect event |
Maggie17 | 0:2d5090e1ceb4 | 113 | state2 = _parser.recv("+EVENT=WIFI_LINK,STATION_UP") |
Maggie17 | 0:2d5090e1ceb4 | 114 | && _parser.recv("+EVENT=%[^,],CONNECT,%d", conType, &socketId); |
Maggie17 | 0:2d5090e1ceb4 | 115 | |
Maggie17 | 0:2d5090e1ceb4 | 116 | if (state1 && state2) |
Maggie17 | 0:2d5090e1ceb4 | 117 | return socketId; |
Maggie17 | 0:2d5090e1ceb4 | 118 | else |
Maggie17 | 0:2d5090e1ceb4 | 119 | return -1; |
Maggie17 | 0:2d5090e1ceb4 | 120 | } |
Maggie17 | 0:2d5090e1ceb4 | 121 | |
Maggie17 | 2:fb6251306b21 | 122 | bool EMW3162::send(int id, const void *data, uint32_t amount) |
Maggie17 | 0:2d5090e1ceb4 | 123 | { |
Maggie17 | 0:2d5090e1ceb4 | 124 | //May take a second try if device is busy |
Maggie17 | 0:2d5090e1ceb4 | 125 | for (unsigned i = 0; i < 2; i++) { |
Maggie17 | 0:2d5090e1ceb4 | 126 | if (_parser.send("AT+SSEND=%d,%d", id, amount) |
Maggie17 | 0:2d5090e1ceb4 | 127 | && _parser.recv(">") |
Maggie17 | 0:2d5090e1ceb4 | 128 | && _parser.write((char*)data, (int)amount) >= 0 |
Maggie17 | 0:2d5090e1ceb4 | 129 | && _parser.recv("+OK")) { |
Maggie17 | 0:2d5090e1ceb4 | 130 | //wait(3); |
Maggie17 | 0:2d5090e1ceb4 | 131 | return true; |
Maggie17 | 0:2d5090e1ceb4 | 132 | } |
Maggie17 | 0:2d5090e1ceb4 | 133 | } |
Maggie17 | 0:2d5090e1ceb4 | 134 | |
Maggie17 | 0:2d5090e1ceb4 | 135 | return false; |
Maggie17 | 0:2d5090e1ceb4 | 136 | } |
Maggie17 | 0:2d5090e1ceb4 | 137 | |
Maggie17 | 2:fb6251306b21 | 138 | void EMW3162::_packet_handler() |
Maggie17 | 0:2d5090e1ceb4 | 139 | { |
Maggie17 | 0:2d5090e1ceb4 | 140 | int id; |
Maggie17 | 0:2d5090e1ceb4 | 141 | uint32_t amount; |
Maggie17 | 0:2d5090e1ceb4 | 142 | |
Maggie17 | 0:2d5090e1ceb4 | 143 | // parse out the packet |
Maggie17 | 0:2d5090e1ceb4 | 144 | if (!_parser.recv(",%d,%d,", &id, &amount)) { |
Maggie17 | 0:2d5090e1ceb4 | 145 | return; |
Maggie17 | 0:2d5090e1ceb4 | 146 | } |
Maggie17 | 0:2d5090e1ceb4 | 147 | |
Maggie17 | 0:2d5090e1ceb4 | 148 | struct packet *packet = (struct packet*)malloc( |
Maggie17 | 0:2d5090e1ceb4 | 149 | sizeof(struct packet) + amount); |
Maggie17 | 0:2d5090e1ceb4 | 150 | if (!packet) { |
Maggie17 | 0:2d5090e1ceb4 | 151 | return; |
Maggie17 | 0:2d5090e1ceb4 | 152 | } |
Maggie17 | 0:2d5090e1ceb4 | 153 | |
Maggie17 | 0:2d5090e1ceb4 | 154 | packet->id = id; |
Maggie17 | 0:2d5090e1ceb4 | 155 | packet->len = amount; |
Maggie17 | 0:2d5090e1ceb4 | 156 | packet->next = 0; |
Maggie17 | 0:2d5090e1ceb4 | 157 | |
Maggie17 | 0:2d5090e1ceb4 | 158 | if (!(_parser.read((char*)(packet + 1), amount))) { |
Maggie17 | 0:2d5090e1ceb4 | 159 | free(packet); |
Maggie17 | 0:2d5090e1ceb4 | 160 | return; |
Maggie17 | 0:2d5090e1ceb4 | 161 | } |
Maggie17 | 0:2d5090e1ceb4 | 162 | |
Maggie17 | 0:2d5090e1ceb4 | 163 | // append to packet list |
Maggie17 | 0:2d5090e1ceb4 | 164 | *_packets_end = packet; |
Maggie17 | 0:2d5090e1ceb4 | 165 | _packets_end = &packet->next; |
Maggie17 | 0:2d5090e1ceb4 | 166 | } |
Maggie17 | 0:2d5090e1ceb4 | 167 | |
Maggie17 | 2:fb6251306b21 | 168 | int32_t EMW3162::recv(int id, void *data, uint32_t amount) |
Maggie17 | 0:2d5090e1ceb4 | 169 | { |
Maggie17 | 0:2d5090e1ceb4 | 170 | while (true) { |
Maggie17 | 0:2d5090e1ceb4 | 171 | // check if any packets are ready for us |
Maggie17 | 0:2d5090e1ceb4 | 172 | for (struct packet **p = &_packets; *p; p = &(*p)->next) { |
Maggie17 | 0:2d5090e1ceb4 | 173 | if ((*p)->id == id) { |
Maggie17 | 0:2d5090e1ceb4 | 174 | struct packet *q = *p; |
Maggie17 | 0:2d5090e1ceb4 | 175 | |
Maggie17 | 0:2d5090e1ceb4 | 176 | if (q->len <= amount) { // Return and remove full packet |
Maggie17 | 0:2d5090e1ceb4 | 177 | memcpy(data, q+1, q->len); |
Maggie17 | 0:2d5090e1ceb4 | 178 | |
Maggie17 | 0:2d5090e1ceb4 | 179 | if (_packets_end == &(*p)->next) { |
Maggie17 | 0:2d5090e1ceb4 | 180 | _packets_end = p; |
Maggie17 | 0:2d5090e1ceb4 | 181 | } |
Maggie17 | 0:2d5090e1ceb4 | 182 | *p = (*p)->next; |
Maggie17 | 0:2d5090e1ceb4 | 183 | |
Maggie17 | 0:2d5090e1ceb4 | 184 | uint32_t len = q->len; |
Maggie17 | 0:2d5090e1ceb4 | 185 | free(q); |
Maggie17 | 0:2d5090e1ceb4 | 186 | return len; |
Maggie17 | 0:2d5090e1ceb4 | 187 | } else { // return only partial packet |
Maggie17 | 0:2d5090e1ceb4 | 188 | memcpy(data, q+1, amount); |
Maggie17 | 0:2d5090e1ceb4 | 189 | |
Maggie17 | 0:2d5090e1ceb4 | 190 | q->len -= amount; |
Maggie17 | 0:2d5090e1ceb4 | 191 | memmove(q+1, (uint8_t*)(q+1) + amount, q->len); |
Maggie17 | 0:2d5090e1ceb4 | 192 | |
Maggie17 | 0:2d5090e1ceb4 | 193 | return amount; |
Maggie17 | 0:2d5090e1ceb4 | 194 | } |
Maggie17 | 0:2d5090e1ceb4 | 195 | } |
Maggie17 | 0:2d5090e1ceb4 | 196 | } |
Maggie17 | 0:2d5090e1ceb4 | 197 | |
Maggie17 | 0:2d5090e1ceb4 | 198 | // Wait for inbound packet |
Maggie17 | 0:2d5090e1ceb4 | 199 | if (!_parser.recv("#")) { |
Maggie17 | 0:2d5090e1ceb4 | 200 | return -1; |
Maggie17 | 0:2d5090e1ceb4 | 201 | } |
Maggie17 | 0:2d5090e1ceb4 | 202 | } |
Maggie17 | 0:2d5090e1ceb4 | 203 | } |
Maggie17 | 0:2d5090e1ceb4 | 204 | |
Maggie17 | 2:fb6251306b21 | 205 | bool EMW3162::close(int id) |
Maggie17 | 0:2d5090e1ceb4 | 206 | { |
Maggie17 | 0:2d5090e1ceb4 | 207 | //May take a second try if device is busy |
Maggie17 | 0:2d5090e1ceb4 | 208 | for (unsigned i = 0; i < 2; i++) { |
Maggie17 | 0:2d5090e1ceb4 | 209 | if (_parser.send("AT+CONF=1,OFF") |
Maggie17 | 0:2d5090e1ceb4 | 210 | && _parser.recv("+OK")) { |
Maggie17 | 0:2d5090e1ceb4 | 211 | char conType[10]; // Used for UDP/TCP connection type: SERVER, CLIENT, BROADCAST, UNICAST |
Maggie17 | 0:2d5090e1ceb4 | 212 | int socketId; // Used for UDP/TCP socket id |
Maggie17 | 0:2d5090e1ceb4 | 213 | |
Maggie17 | 0:2d5090e1ceb4 | 214 | _parser.recv("+EVENT=%[^,],DISCONNECT,%d", conType, &socketId); |
Maggie17 | 0:2d5090e1ceb4 | 215 | return true; |
Maggie17 | 0:2d5090e1ceb4 | 216 | } |
Maggie17 | 0:2d5090e1ceb4 | 217 | } |
Maggie17 | 0:2d5090e1ceb4 | 218 | |
Maggie17 | 0:2d5090e1ceb4 | 219 | return false; |
Maggie17 | 0:2d5090e1ceb4 | 220 | } |
Maggie17 | 0:2d5090e1ceb4 | 221 | |
Maggie17 | 2:fb6251306b21 | 222 | void EMW3162::setTimeout(uint32_t timeout_ms) |
Maggie17 | 0:2d5090e1ceb4 | 223 | { |
Maggie17 | 0:2d5090e1ceb4 | 224 | _parser.setTimeout(timeout_ms); |
Maggie17 | 0:2d5090e1ceb4 | 225 | } |
Maggie17 | 0:2d5090e1ceb4 | 226 | |
Maggie17 | 2:fb6251306b21 | 227 | bool EMW3162::readable() |
Maggie17 | 0:2d5090e1ceb4 | 228 | { |
Maggie17 | 0:2d5090e1ceb4 | 229 | return _serial.readable(); |
Maggie17 | 0:2d5090e1ceb4 | 230 | } |
Maggie17 | 0:2d5090e1ceb4 | 231 | |
Maggie17 | 2:fb6251306b21 | 232 | bool EMW3162::writeable() |
Maggie17 | 0:2d5090e1ceb4 | 233 | { |
Maggie17 | 0:2d5090e1ceb4 | 234 | return _serial.writeable(); |
Maggie17 | 0:2d5090e1ceb4 | 235 | } |
Maggie17 | 0:2d5090e1ceb4 | 236 | |
Maggie17 | 2:fb6251306b21 | 237 | void EMW3162::attach(Callback<void()> func) |
Maggie17 | 0:2d5090e1ceb4 | 238 | { |
Maggie17 | 0:2d5090e1ceb4 | 239 | _serial.attach(func); |
Maggie17 | 0:2d5090e1ceb4 | 240 | } |