A library for talking to Multi-Tech's Cellular SocketModem Devices.
Dependents: M2X_dev axeda_wrapper_dev MTS_M2x_Example1 MTS_Cellular_Connect_Example ... more
wifi/Wifi.cpp@75:7ad32827b39e, 2013-12-26 (annotated)
- Committer:
- jengbrecht
- Date:
- Thu Dec 26 16:23:41 2013 +0000
- Revision:
- 75:7ad32827b39e
- Parent:
- 74:9f87bd22c222
- Child:
- 76:371aab9902a4
Removed Echo mode method
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
jengbrecht | 69:f3e696bbb0d5 | 1 | #include "Wifi.h" |
jengbrecht | 69:f3e696bbb0d5 | 2 | |
jengbrecht | 69:f3e696bbb0d5 | 3 | Wifi* Wifi::instance = NULL; |
jengbrecht | 69:f3e696bbb0d5 | 4 | |
jengbrecht | 69:f3e696bbb0d5 | 5 | Wifi* Wifi::getInstance() |
jengbrecht | 69:f3e696bbb0d5 | 6 | { |
jengbrecht | 69:f3e696bbb0d5 | 7 | if(instance == NULL) { |
jengbrecht | 69:f3e696bbb0d5 | 8 | instance = new Wifi(NULL); |
jengbrecht | 69:f3e696bbb0d5 | 9 | } |
jengbrecht | 69:f3e696bbb0d5 | 10 | return instance; |
jengbrecht | 69:f3e696bbb0d5 | 11 | } |
jengbrecht | 69:f3e696bbb0d5 | 12 | |
jengbrecht | 69:f3e696bbb0d5 | 13 | bool Wifi::init(MTSBufferedIO* io) |
jengbrecht | 69:f3e696bbb0d5 | 14 | { |
jengbrecht | 69:f3e696bbb0d5 | 15 | if (io == NULL) { |
jengbrecht | 69:f3e696bbb0d5 | 16 | return false; |
jengbrecht | 69:f3e696bbb0d5 | 17 | } |
jengbrecht | 69:f3e696bbb0d5 | 18 | instance->io = io; |
jengbrecht | 74:9f87bd22c222 | 19 | if(cmdMode()) { |
jengbrecht | 74:9f87bd22c222 | 20 | return true; |
jengbrecht | 74:9f87bd22c222 | 21 | } |
jengbrecht | 74:9f87bd22c222 | 22 | printf("[ERROR] Failed to enter command mode\r\n"); |
jengbrecht | 74:9f87bd22c222 | 23 | return false; |
jengbrecht | 69:f3e696bbb0d5 | 24 | } |
jengbrecht | 69:f3e696bbb0d5 | 25 | |
jengbrecht | 69:f3e696bbb0d5 | 26 | Wifi::Wifi(MTSBufferedIO* io) |
jengbrecht | 69:f3e696bbb0d5 | 27 | : io(io) |
jengbrecht | 69:f3e696bbb0d5 | 28 | , echoMode(true) |
jengbrecht | 69:f3e696bbb0d5 | 29 | , wifiConnected(false) |
jengbrecht | 69:f3e696bbb0d5 | 30 | , mode(TCP) |
jengbrecht | 69:f3e696bbb0d5 | 31 | , socketOpened(false) |
jengbrecht | 69:f3e696bbb0d5 | 32 | , socketCloseable(true) |
jengbrecht | 69:f3e696bbb0d5 | 33 | , local_port(0) |
jengbrecht | 69:f3e696bbb0d5 | 34 | , host_port(0) |
jengbrecht | 69:f3e696bbb0d5 | 35 | , _ssid("") |
jengbrecht | 69:f3e696bbb0d5 | 36 | { |
jengbrecht | 69:f3e696bbb0d5 | 37 | |
jengbrecht | 69:f3e696bbb0d5 | 38 | } |
jengbrecht | 69:f3e696bbb0d5 | 39 | |
jengbrecht | 69:f3e696bbb0d5 | 40 | Wifi::~Wifi() |
jengbrecht | 69:f3e696bbb0d5 | 41 | { |
jengbrecht | 69:f3e696bbb0d5 | 42 | } |
jengbrecht | 69:f3e696bbb0d5 | 43 | |
jengbrecht | 69:f3e696bbb0d5 | 44 | bool Wifi::connect() |
jengbrecht | 69:f3e696bbb0d5 | 45 | { |
jengbrecht | 69:f3e696bbb0d5 | 46 | //Check if socket is open |
jengbrecht | 69:f3e696bbb0d5 | 47 | if(socketOpened) { |
jengbrecht | 69:f3e696bbb0d5 | 48 | return true; |
jengbrecht | 69:f3e696bbb0d5 | 49 | } |
jengbrecht | 69:f3e696bbb0d5 | 50 | |
jengbrecht | 69:f3e696bbb0d5 | 51 | //Run Test first to validate a good state |
jengbrecht | 69:f3e696bbb0d5 | 52 | if(isConnected()) { |
jengbrecht | 69:f3e696bbb0d5 | 53 | return true; |
jengbrecht | 69:f3e696bbb0d5 | 54 | } |
jengbrecht | 69:f3e696bbb0d5 | 55 | |
jengbrecht | 69:f3e696bbb0d5 | 56 | //Check RSSI: AT+CSQ |
jengbrecht | 69:f3e696bbb0d5 | 57 | //int rssi = getSignalStrength(); |
jengbrecht | 69:f3e696bbb0d5 | 58 | //printf("[DEBUG] Signal strength: %d\r\n", rssi); |
jengbrecht | 69:f3e696bbb0d5 | 59 | |
jengbrecht | 69:f3e696bbb0d5 | 60 | //Possibly add a scan command here and look for the network.... |
jengbrecht | 69:f3e696bbb0d5 | 61 | |
jengbrecht | 69:f3e696bbb0d5 | 62 | printf("Starting Setup\n\r"); |
jengbrecht | 69:f3e696bbb0d5 | 63 | //Set device to manual infrastructure mode |
jengbrecht | 69:f3e696bbb0d5 | 64 | if (sendBasicCommand("set wlan join 0", 1000) != Cellular::CELL_OK) { |
jengbrecht | 69:f3e696bbb0d5 | 65 | return false; |
jengbrecht | 69:f3e696bbb0d5 | 66 | } |
jengbrecht | 69:f3e696bbb0d5 | 67 | |
jengbrecht | 69:f3e696bbb0d5 | 68 | printf("Set Manual Mode\n\r"); |
jengbrecht | 69:f3e696bbb0d5 | 69 | //Set device to channel auto-scanning mode |
jengbrecht | 69:f3e696bbb0d5 | 70 | if (sendBasicCommand("set wlan channel 0", 1000) != Cellular::CELL_OK) { |
jengbrecht | 69:f3e696bbb0d5 | 71 | return false; |
jengbrecht | 69:f3e696bbb0d5 | 72 | } |
jengbrecht | 69:f3e696bbb0d5 | 73 | |
jengbrecht | 69:f3e696bbb0d5 | 74 | //Set device so no data is transmitted immediately following a socket connection |
jengbrecht | 69:f3e696bbb0d5 | 75 | if (sendBasicCommand("set comm remote 0", 1000) != Cellular::CELL_OK) { |
jengbrecht | 69:f3e696bbb0d5 | 76 | return false; |
jengbrecht | 69:f3e696bbb0d5 | 77 | } |
jengbrecht | 69:f3e696bbb0d5 | 78 | |
jengbrecht | 69:f3e696bbb0d5 | 79 | //Set device into DHCP mode |
jengbrecht | 69:f3e696bbb0d5 | 80 | if (sendBasicCommand("set ip dhcp 1", 1000) != Cellular::CELL_OK) { |
jengbrecht | 69:f3e696bbb0d5 | 81 | return false; |
jengbrecht | 69:f3e696bbb0d5 | 82 | } |
jengbrecht | 69:f3e696bbb0d5 | 83 | |
jengbrecht | 69:f3e696bbb0d5 | 84 | //join my_network |
jengbrecht | 69:f3e696bbb0d5 | 85 | |
jengbrecht | 69:f3e696bbb0d5 | 86 | //AT#CONNECTIONSTART: Make a PPP connection |
jengbrecht | 69:f3e696bbb0d5 | 87 | printf("[DEBUG] Making SSID Connection Attempt. SSID[%s]\r\n", _ssid.c_str()); |
jengbrecht | 69:f3e696bbb0d5 | 88 | std::string result = sendCommand("join " + _ssid, 10000); |
jengbrecht | 69:f3e696bbb0d5 | 89 | printf("Connect Status: %s\n\r", result.c_str()); |
jengbrecht | 69:f3e696bbb0d5 | 90 | //std::string pppResult = sendCommand("AT#CONNECTIONSTART", 120000); |
jengbrecht | 69:f3e696bbb0d5 | 91 | // std::vector<std::string> parts = Text::split(pppResult, "\r\n"); |
jengbrecht | 69:f3e696bbb0d5 | 92 | |
jengbrecht | 69:f3e696bbb0d5 | 93 | /* |
jengbrecht | 69:f3e696bbb0d5 | 94 | if(pppResult.find("Ok_Info_GprsActivation") != std::string::npos) { |
jengbrecht | 69:f3e696bbb0d5 | 95 | if(parts.size() >= 2) { |
jengbrecht | 69:f3e696bbb0d5 | 96 | local_address = parts[1]; |
jengbrecht | 69:f3e696bbb0d5 | 97 | } |
jengbrecht | 69:f3e696bbb0d5 | 98 | printf("[INFO] PPP Connection Established: IP[%s]\r\n", local_address.c_str()); |
jengbrecht | 69:f3e696bbb0d5 | 99 | pppConnected = true; |
jengbrecht | 69:f3e696bbb0d5 | 100 | |
jengbrecht | 69:f3e696bbb0d5 | 101 | } else { |
jengbrecht | 69:f3e696bbb0d5 | 102 | pppConnected = false; |
jengbrecht | 69:f3e696bbb0d5 | 103 | } |
jengbrecht | 69:f3e696bbb0d5 | 104 | */ |
jengbrecht | 69:f3e696bbb0d5 | 105 | |
jengbrecht | 69:f3e696bbb0d5 | 106 | wifiConnected = true; |
jengbrecht | 69:f3e696bbb0d5 | 107 | return wifiConnected; |
jengbrecht | 69:f3e696bbb0d5 | 108 | } |
jengbrecht | 69:f3e696bbb0d5 | 109 | |
jengbrecht | 69:f3e696bbb0d5 | 110 | void Wifi::disconnect() |
jengbrecht | 69:f3e696bbb0d5 | 111 | { |
jengbrecht | 69:f3e696bbb0d5 | 112 | } |
jengbrecht | 69:f3e696bbb0d5 | 113 | |
jengbrecht | 69:f3e696bbb0d5 | 114 | bool Wifi::isConnected() |
jengbrecht | 69:f3e696bbb0d5 | 115 | { |
jengbrecht | 69:f3e696bbb0d5 | 116 | return false; |
jengbrecht | 69:f3e696bbb0d5 | 117 | } |
jengbrecht | 69:f3e696bbb0d5 | 118 | |
jengbrecht | 69:f3e696bbb0d5 | 119 | bool Wifi::bind(unsigned int port) |
jengbrecht | 69:f3e696bbb0d5 | 120 | { |
jengbrecht | 69:f3e696bbb0d5 | 121 | return true; |
jengbrecht | 69:f3e696bbb0d5 | 122 | } |
jengbrecht | 69:f3e696bbb0d5 | 123 | |
jengbrecht | 69:f3e696bbb0d5 | 124 | bool Wifi::open(const std::string& address, unsigned int port, Mode mode) |
jengbrecht | 69:f3e696bbb0d5 | 125 | { |
jengbrecht | 69:f3e696bbb0d5 | 126 | //set comm size??? are advanced Socket settings |
jengbrecht | 69:f3e696bbb0d5 | 127 | //set comm time??? are advanced Socket settings |
jengbrecht | 69:f3e696bbb0d5 | 128 | return true; |
jengbrecht | 69:f3e696bbb0d5 | 129 | } |
jengbrecht | 69:f3e696bbb0d5 | 130 | |
jengbrecht | 69:f3e696bbb0d5 | 131 | bool Wifi::isOpen() |
jengbrecht | 69:f3e696bbb0d5 | 132 | { |
jengbrecht | 69:f3e696bbb0d5 | 133 | return true; |
jengbrecht | 69:f3e696bbb0d5 | 134 | } |
jengbrecht | 69:f3e696bbb0d5 | 135 | |
jengbrecht | 69:f3e696bbb0d5 | 136 | bool Wifi::close() |
jengbrecht | 69:f3e696bbb0d5 | 137 | { |
jengbrecht | 69:f3e696bbb0d5 | 138 | return true; |
jengbrecht | 69:f3e696bbb0d5 | 139 | } |
jengbrecht | 69:f3e696bbb0d5 | 140 | |
jengbrecht | 69:f3e696bbb0d5 | 141 | int Wifi::read(char* data, int max, int timeout) |
jengbrecht | 69:f3e696bbb0d5 | 142 | { |
jengbrecht | 69:f3e696bbb0d5 | 143 | return 0; |
jengbrecht | 69:f3e696bbb0d5 | 144 | } |
jengbrecht | 69:f3e696bbb0d5 | 145 | |
jengbrecht | 69:f3e696bbb0d5 | 146 | int Wifi::write(const char* data, int length, int timeout) |
jengbrecht | 69:f3e696bbb0d5 | 147 | { |
jengbrecht | 69:f3e696bbb0d5 | 148 | return 0; |
jengbrecht | 69:f3e696bbb0d5 | 149 | } |
jengbrecht | 69:f3e696bbb0d5 | 150 | |
jengbrecht | 69:f3e696bbb0d5 | 151 | unsigned int Wifi::readable() |
jengbrecht | 69:f3e696bbb0d5 | 152 | { |
jengbrecht | 69:f3e696bbb0d5 | 153 | if(io == NULL) { |
jengbrecht | 69:f3e696bbb0d5 | 154 | printf("[ERROR] MTSBufferedIO not set\r\n"); |
jengbrecht | 69:f3e696bbb0d5 | 155 | return 0; |
jengbrecht | 69:f3e696bbb0d5 | 156 | } |
jengbrecht | 69:f3e696bbb0d5 | 157 | if(!socketOpened) { |
jengbrecht | 69:f3e696bbb0d5 | 158 | printf("[ERROR] Socket is not open\r\n"); |
jengbrecht | 69:f3e696bbb0d5 | 159 | return 0; |
jengbrecht | 69:f3e696bbb0d5 | 160 | } |
jengbrecht | 69:f3e696bbb0d5 | 161 | return io->readable(); |
jengbrecht | 69:f3e696bbb0d5 | 162 | } |
jengbrecht | 69:f3e696bbb0d5 | 163 | |
jengbrecht | 69:f3e696bbb0d5 | 164 | unsigned int Wifi::writeable() |
jengbrecht | 69:f3e696bbb0d5 | 165 | { |
jengbrecht | 69:f3e696bbb0d5 | 166 | if(io == NULL) { |
jengbrecht | 69:f3e696bbb0d5 | 167 | printf("[ERROR] MTSBufferedIO not set\r\n"); |
jengbrecht | 69:f3e696bbb0d5 | 168 | return 0; |
jengbrecht | 69:f3e696bbb0d5 | 169 | } |
jengbrecht | 69:f3e696bbb0d5 | 170 | if(!socketOpened) { |
jengbrecht | 69:f3e696bbb0d5 | 171 | printf("[ERROR] Socket is not open\r\n"); |
jengbrecht | 69:f3e696bbb0d5 | 172 | return 0; |
jengbrecht | 69:f3e696bbb0d5 | 173 | } |
jengbrecht | 69:f3e696bbb0d5 | 174 | |
jengbrecht | 69:f3e696bbb0d5 | 175 | return io->writeable(); |
jengbrecht | 69:f3e696bbb0d5 | 176 | } |
jengbrecht | 69:f3e696bbb0d5 | 177 | |
jengbrecht | 69:f3e696bbb0d5 | 178 | void Wifi::reset() |
jengbrecht | 69:f3e696bbb0d5 | 179 | { |
jengbrecht | 69:f3e696bbb0d5 | 180 | } |
jengbrecht | 69:f3e696bbb0d5 | 181 | |
jengbrecht | 69:f3e696bbb0d5 | 182 | Cellular::Code Wifi::setNetwork(const std::string& ssid, const std::string& key, SecurityType type) |
jengbrecht | 69:f3e696bbb0d5 | 183 | { |
jengbrecht | 69:f3e696bbb0d5 | 184 | Cellular::Code code; |
jengbrecht | 69:f3e696bbb0d5 | 185 | |
jengbrecht | 69:f3e696bbb0d5 | 186 | //Set the appropraite SSID |
jengbrecht | 74:9f87bd22c222 | 187 | code = sendBasicCommand("set wlan ssid " + ssid, 2000); |
jengbrecht | 69:f3e696bbb0d5 | 188 | if (code != Cellular::CELL_OK) { |
jengbrecht | 69:f3e696bbb0d5 | 189 | return code; |
jengbrecht | 69:f3e696bbb0d5 | 190 | } |
jengbrecht | 69:f3e696bbb0d5 | 191 | |
jengbrecht | 69:f3e696bbb0d5 | 192 | //Set the security key |
jengbrecht | 69:f3e696bbb0d5 | 193 | if (type == WEP64 || type == WEP128) { |
jengbrecht | 69:f3e696bbb0d5 | 194 | //Set the WEP key if using WEP encryption |
jengbrecht | 74:9f87bd22c222 | 195 | code = sendBasicCommand("set wlan key " + key, 2000); |
jengbrecht | 69:f3e696bbb0d5 | 196 | if (code != Cellular::CELL_OK) { |
jengbrecht | 69:f3e696bbb0d5 | 197 | return code; |
jengbrecht | 69:f3e696bbb0d5 | 198 | } |
jengbrecht | 69:f3e696bbb0d5 | 199 | } else if (type == WPA || type == WPA2) { |
jengbrecht | 69:f3e696bbb0d5 | 200 | //Set the WPA key if using WPA encryption |
jengbrecht | 74:9f87bd22c222 | 201 | code = sendBasicCommand("set wlan phrase " + key, 2000); |
jengbrecht | 69:f3e696bbb0d5 | 202 | if (code != Cellular::CELL_OK) { |
jengbrecht | 69:f3e696bbb0d5 | 203 | return code; |
jengbrecht | 69:f3e696bbb0d5 | 204 | } |
jengbrecht | 69:f3e696bbb0d5 | 205 | } |
jengbrecht | 69:f3e696bbb0d5 | 206 | |
jengbrecht | 69:f3e696bbb0d5 | 207 | _ssid = ssid; |
jengbrecht | 69:f3e696bbb0d5 | 208 | return Cellular::CELL_OK; |
jengbrecht | 69:f3e696bbb0d5 | 209 | } |
jengbrecht | 69:f3e696bbb0d5 | 210 | |
jengbrecht | 69:f3e696bbb0d5 | 211 | int Wifi::getSignalStrength() |
jengbrecht | 69:f3e696bbb0d5 | 212 | { |
jengbrecht | 74:9f87bd22c222 | 213 | string response = sendCommand("show rssi", 2000); |
jengbrecht | 74:9f87bd22c222 | 214 | if (response.find("RSSI") == string::npos) { |
jengbrecht | 74:9f87bd22c222 | 215 | return -1; |
jengbrecht | 74:9f87bd22c222 | 216 | } |
jengbrecht | 74:9f87bd22c222 | 217 | int start = response.find('('); |
jengbrecht | 74:9f87bd22c222 | 218 | int stop = response.find(')', start); |
jengbrecht | 74:9f87bd22c222 | 219 | string signal = response.substr(start + 1, stop - start - 1); |
jengbrecht | 74:9f87bd22c222 | 220 | int value; |
jengbrecht | 74:9f87bd22c222 | 221 | sscanf(signal.c_str(), "%d", &value); |
jengbrecht | 74:9f87bd22c222 | 222 | return value; |
jengbrecht | 69:f3e696bbb0d5 | 223 | } |
jengbrecht | 69:f3e696bbb0d5 | 224 | |
jengbrecht | 74:9f87bd22c222 | 225 | bool Wifi::cmdMode() |
jengbrecht | 74:9f87bd22c222 | 226 | { |
jengbrecht | 74:9f87bd22c222 | 227 | wait(.5); |
jengbrecht | 74:9f87bd22c222 | 228 | std::string response = sendCommand("$$$", 2000, Cellular::NONE); |
jengbrecht | 74:9f87bd22c222 | 229 | if (response.find("CMD") != string::npos) { |
jengbrecht | 74:9f87bd22c222 | 230 | return true; |
jengbrecht | 74:9f87bd22c222 | 231 | } |
jengbrecht | 74:9f87bd22c222 | 232 | return false; |
jengbrecht | 74:9f87bd22c222 | 233 | } |
jengbrecht | 69:f3e696bbb0d5 | 234 | |
jengbrecht | 69:f3e696bbb0d5 | 235 | Cellular::Code Wifi::sendBasicCommand(string command, int timeoutMillis, Cellular::ESC_CHAR esc) |
jengbrecht | 69:f3e696bbb0d5 | 236 | { |
jengbrecht | 69:f3e696bbb0d5 | 237 | if(socketOpened) { |
jengbrecht | 69:f3e696bbb0d5 | 238 | printf("[ERROR] socket is open. Can not send AT commands\r\n"); |
jengbrecht | 69:f3e696bbb0d5 | 239 | return Cellular::CELL_ERROR; |
jengbrecht | 69:f3e696bbb0d5 | 240 | } |
jengbrecht | 69:f3e696bbb0d5 | 241 | |
jengbrecht | 69:f3e696bbb0d5 | 242 | string response = sendCommand(command, timeoutMillis, esc); |
jengbrecht | 69:f3e696bbb0d5 | 243 | //printf("Response: %s\n\r", response.c_str()); |
jengbrecht | 69:f3e696bbb0d5 | 244 | if (response.size() == 0) { |
jengbrecht | 69:f3e696bbb0d5 | 245 | return Cellular::CELL_NO_RESPONSE; |
jengbrecht | 69:f3e696bbb0d5 | 246 | } else if (response.find("AOK") != string::npos) { |
jengbrecht | 69:f3e696bbb0d5 | 247 | return Cellular::CELL_OK; |
jengbrecht | 69:f3e696bbb0d5 | 248 | } else if (response.find("ERR") != string::npos) { |
jengbrecht | 69:f3e696bbb0d5 | 249 | return Cellular::CELL_ERROR; |
jengbrecht | 69:f3e696bbb0d5 | 250 | } else { |
jengbrecht | 69:f3e696bbb0d5 | 251 | return Cellular::CELL_FAILURE; |
jengbrecht | 69:f3e696bbb0d5 | 252 | } |
jengbrecht | 69:f3e696bbb0d5 | 253 | } |
jengbrecht | 69:f3e696bbb0d5 | 254 | |
jengbrecht | 69:f3e696bbb0d5 | 255 | string Wifi::sendCommand(string command, int timeoutMillis, Cellular::ESC_CHAR esc) |
jengbrecht | 69:f3e696bbb0d5 | 256 | { |
jengbrecht | 69:f3e696bbb0d5 | 257 | if(io == NULL) { |
jengbrecht | 69:f3e696bbb0d5 | 258 | printf("[ERROR] MTSBufferedIO not set\r\n"); |
jengbrecht | 69:f3e696bbb0d5 | 259 | return ""; |
jengbrecht | 69:f3e696bbb0d5 | 260 | } |
jengbrecht | 69:f3e696bbb0d5 | 261 | if(socketOpened) { |
jengbrecht | 69:f3e696bbb0d5 | 262 | printf("[ERROR] socket is open. Can not send AT commands\r\n"); |
jengbrecht | 69:f3e696bbb0d5 | 263 | return ""; |
jengbrecht | 69:f3e696bbb0d5 | 264 | } |
jengbrecht | 69:f3e696bbb0d5 | 265 | |
jengbrecht | 69:f3e696bbb0d5 | 266 | int size = command.size() + 1; |
jengbrecht | 69:f3e696bbb0d5 | 267 | char cmd[size]; |
jengbrecht | 69:f3e696bbb0d5 | 268 | strcpy(cmd, command.c_str()); |
jengbrecht | 69:f3e696bbb0d5 | 269 | if (esc == Cellular::CR) { |
jengbrecht | 69:f3e696bbb0d5 | 270 | cmd[size -1] = '\r'; |
jengbrecht | 69:f3e696bbb0d5 | 271 | } else if (esc == Cellular::CTRL_Z) { |
jengbrecht | 69:f3e696bbb0d5 | 272 | cmd[size -1] = 0x1A; |
jengbrecht | 69:f3e696bbb0d5 | 273 | } else if(esc == NONE) { |
jengbrecht | 74:9f87bd22c222 | 274 | size = size - 1; |
jengbrecht | 69:f3e696bbb0d5 | 275 | } |
jengbrecht | 69:f3e696bbb0d5 | 276 | |
jengbrecht | 69:f3e696bbb0d5 | 277 | io->rxClear(); |
jengbrecht | 69:f3e696bbb0d5 | 278 | io->txClear(); |
jengbrecht | 69:f3e696bbb0d5 | 279 | std::string result; |
jengbrecht | 69:f3e696bbb0d5 | 280 | int status = io->write(cmd, size); |
jengbrecht | 69:f3e696bbb0d5 | 281 | int available = io->readable(); |
jengbrecht | 69:f3e696bbb0d5 | 282 | int previous = -1; |
jengbrecht | 69:f3e696bbb0d5 | 283 | int timer = 0; |
jengbrecht | 69:f3e696bbb0d5 | 284 | char tmp[256]; |
jengbrecht | 69:f3e696bbb0d5 | 285 | tmp[255] = 0; |
jengbrecht | 69:f3e696bbb0d5 | 286 | bool started = !echoMode; |
jengbrecht | 69:f3e696bbb0d5 | 287 | bool done = false; |
jengbrecht | 69:f3e696bbb0d5 | 288 | do { |
jengbrecht | 74:9f87bd22c222 | 289 | wait(.2); |
jengbrecht | 74:9f87bd22c222 | 290 | timer = timer + 200; |
jengbrecht | 69:f3e696bbb0d5 | 291 | previous = available; |
jengbrecht | 69:f3e696bbb0d5 | 292 | available = io->readable(); |
jengbrecht | 69:f3e696bbb0d5 | 293 | |
jengbrecht | 69:f3e696bbb0d5 | 294 | int size = io->read(tmp,255); //1 less than allocated |
jengbrecht | 69:f3e696bbb0d5 | 295 | if(size > 0) { |
jengbrecht | 69:f3e696bbb0d5 | 296 | result.append(tmp, size); |
jengbrecht | 69:f3e696bbb0d5 | 297 | } |
jengbrecht | 69:f3e696bbb0d5 | 298 | |
jengbrecht | 69:f3e696bbb0d5 | 299 | if(!started) { |
jengbrecht | 69:f3e696bbb0d5 | 300 | //In Echo Mode (Command will have echo'd + 2 characters for \r\n) |
jengbrecht | 69:f3e696bbb0d5 | 301 | if(result.size() > command.size() + 2) { |
jengbrecht | 69:f3e696bbb0d5 | 302 | started = true; |
jengbrecht | 69:f3e696bbb0d5 | 303 | } |
jengbrecht | 69:f3e696bbb0d5 | 304 | } else { |
jengbrecht | 69:f3e696bbb0d5 | 305 | done = (available == previous); |
jengbrecht | 69:f3e696bbb0d5 | 306 | } |
jengbrecht | 69:f3e696bbb0d5 | 307 | if(timer >= timeoutMillis) { |
jengbrecht | 69:f3e696bbb0d5 | 308 | printf("[WARNING] sendCommand timed out after %d milliseconds\r\n", timeoutMillis); |
jengbrecht | 69:f3e696bbb0d5 | 309 | done = true; |
jengbrecht | 69:f3e696bbb0d5 | 310 | } |
jengbrecht | 69:f3e696bbb0d5 | 311 | } while (!done); |
jengbrecht | 69:f3e696bbb0d5 | 312 | |
jengbrecht | 69:f3e696bbb0d5 | 313 | return result; |
jengbrecht | 69:f3e696bbb0d5 | 314 | } |