[136] | 1 | /**
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| 2 | * @file ESP8266.h
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| 3 | * @brief The definition of class ESP8266.
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| 4 | * @author Wu Pengfei<pengfei.wu@itead.cc>
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| 5 | * @date 2015.02
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| 6 | *
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| 7 | * @par Copyright:
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| 8 | * Copyright (c) 2015 ITEAD Intelligent Systems Co., Ltd. \n\n
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| 9 | * This program is free software; you can redistribute it and/or
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| 10 | * modify it under the terms of the GNU General Public License as
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| 11 | * published by the Free Software Foundation; either version 2 of
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| 12 | * the License, or (at your option) any later version. \n\n
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| 13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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| 14 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 15 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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| 16 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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| 17 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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| 18 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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| 19 | * THE SOFTWARE.
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| 20 | */
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| 21 | #ifndef __ESP8266_H__
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| 22 | #define __ESP8266_H__
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| 23 |
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| 24 | #include "Arduino.h"
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| 25 |
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| 26 |
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| 27 | //#define ESP8266_USE_SOFTWARE_SERIAL
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| 28 |
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| 29 |
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| 30 | #ifdef ESP8266_USE_SOFTWARE_SERIAL
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| 31 | #include "SoftwareSerial.h"
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| 32 | #endif
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| 33 |
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| 34 |
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| 35 | /**
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| 36 | * Provide an easy-to-use way to manipulate ESP8266.
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| 37 | */
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| 38 | class ESP8266 {
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| 39 | public:
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| 40 |
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| 41 | #ifdef ESP8266_USE_SOFTWARE_SERIAL
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| 42 | /*
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| 43 | * Constuctor.
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| 44 | *
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| 45 | * @param uart - an reference of SoftwareSerial object.
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| 46 | * @param baud - the buad rate to communicate with ESP8266(default:115200).
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| 47 | *
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| 48 | * @warning parameter baud depends on the AT firmware. 115200 is an common value.
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| 49 | */
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| 50 | void begin(SoftwareSerial &uart, uint32_t baud = 115200);
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| 51 | #else /* HardwareSerial */
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| 52 | /*
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| 53 | * Constuctor.
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| 54 | *
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| 55 | * @param uart - an reference of HardwareSerial object.
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| 56 | * @param baud - the buad rate to communicate with ESP8266(default:115200).
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| 57 | *
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| 58 | * @warning parameter baud depends on the AT firmware. 115200 is an common value.
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| 59 | */
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| 60 | void begin(HardwareSerial &uart, uint32_t baud = 115200);
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| 61 | #endif
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| 62 |
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| 63 |
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| 64 | /**
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| 65 | * Verify ESP8266 whether live or not.
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| 66 | *
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| 67 | * Actually, this method will send command "AT" to ESP8266 and waiting for "OK".
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| 68 | *
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| 69 | * @retval true - alive.
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| 70 | * @retval false - dead.
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| 71 | */
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| 72 | bool kick(void);
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| 73 |
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| 74 | /**
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| 75 | * Restart ESP8266 by "AT+RST".
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| 76 | *
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| 77 | * This method will take 3 seconds or more.
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| 78 | *
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| 79 | * @retval true - success.
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| 80 | * @retval false - failure.
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| 81 | */
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| 82 | bool restart(void);
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| 83 |
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| 84 | /**
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| 85 | * Get the version of AT Command Set.
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| 86 | *
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| 87 | * @return the string of version.
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| 88 | */
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| 89 | String getVersion(void);
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| 90 |
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| 91 | /**
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| 92 | * Set operation mode to staion.
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| 93 | *
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| 94 | * @retval true - success.
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| 95 | * @retval false - failure.
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| 96 | */
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| 97 | bool setOprToStation(void);
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| 98 |
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| 99 | /**
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| 100 | * Set operation mode to softap.
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| 101 | *
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| 102 | * @retval true - success.
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| 103 | * @retval false - failure.
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| 104 | */
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| 105 | bool setOprToSoftAP(void);
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| 106 |
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| 107 | /**
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| 108 | * Set operation mode to station + softap.
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| 109 | *
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| 110 | * @retval true - success.
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| 111 | * @retval false - failure.
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| 112 | */
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| 113 | bool setOprToStationSoftAP(void);
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| 114 |
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| 115 | /**
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| 116 | * Search available AP list and return it.
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| 117 | *
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| 118 | * @return the list of available APs.
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| 119 | * @note This method will occupy a lot of memeory(hundreds of Bytes to a couple of KBytes).
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| 120 | * Do not call this method unless you must and ensure that your board has enough memery left.
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| 121 | */
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| 122 | String getAPList(void);
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| 123 |
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| 124 | /**
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| 125 | * Join in AP.
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| 126 | *
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| 127 | * @param ssid - SSID of AP to join in.
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| 128 | * @param pwd - Password of AP to join in.
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| 129 | * @retval true - success.
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| 130 | * @retval false - failure.
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| 131 | * @note This method will take a couple of seconds.
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| 132 | */
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| 133 | bool joinAP(String ssid, String pwd);
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| 134 |
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| 135 | /**
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| 136 | * Leave AP joined before.
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| 137 | *
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| 138 | * @retval true - success.
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| 139 | * @retval false - failure.
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| 140 | */
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| 141 | bool leaveAP(void);
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| 142 |
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| 143 | /**
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| 144 | * Set SoftAP parameters.
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| 145 | *
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| 146 | * @param ssid - SSID of SoftAP.
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| 147 | * @param pwd - PASSWORD of SoftAP.
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| 148 | * @param chl - the channel (1 - 13, default: 7).
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| 149 | * @param ecn - the way of encrypstion (0 - OPEN, 1 - WEP,
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| 150 | * 2 - WPA_PSK, 3 - WPA2_PSK, 4 - WPA_WPA2_PSK, default: 4).
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| 151 | * @note This method should not be called when station mode.
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| 152 | */
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| 153 | bool setSoftAPParam(String ssid, String pwd, uint8_t chl = 7, uint8_t ecn = 4);
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| 154 |
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| 155 | /**
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| 156 | * Get the IP list of devices connected to SoftAP.
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| 157 | *
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| 158 | * @return the list of IP.
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| 159 | * @note This method should not be called when station mode.
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| 160 | */
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| 161 | String getJoinedDeviceIP(void);
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| 162 |
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| 163 | /**
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| 164 | * Get the current status of connection(UDP and TCP).
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| 165 | *
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| 166 | * @return the status.
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| 167 | */
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| 168 | String getIPStatus(void);
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| 169 |
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| 170 | /**
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| 171 | * Get the IP address of ESP8266.
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| 172 | *
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| 173 | * @return the IP list.
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| 174 | */
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| 175 | String getLocalIP(void);
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| 176 |
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| 177 | /**
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| 178 | * Enable IP MUX(multiple connection mode).
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| 179 | *
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| 180 | * In multiple connection mode, a couple of TCP and UDP communication can be builded.
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| 181 | * They can be distinguished by the identifier of TCP or UDP named mux_id.
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| 182 | *
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| 183 | * @retval true - success.
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| 184 | * @retval false - failure.
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| 185 | */
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| 186 | bool enableMUX(void);
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| 187 |
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| 188 | /**
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| 189 | * Disable IP MUX(single connection mode).
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| 190 | *
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| 191 | * In single connection mode, only one TCP or UDP communication can be builded.
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| 192 | *
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| 193 | * @retval true - success.
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| 194 | * @retval false - failure.
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| 195 | */
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| 196 | bool disableMUX(void);
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| 197 |
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| 198 |
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| 199 | /**
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| 200 | * Create TCP connection in single mode.
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| 201 | *
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| 202 | * @param addr - the IP or domain name of the target host.
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| 203 | * @param port - the port number of the target host.
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| 204 | * @retval true - success.
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| 205 | * @retval false - failure.
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| 206 | */
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| 207 | bool createTCP(String addr, uint32_t port);
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| 208 |
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| 209 | /**
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| 210 | * Release TCP connection in single mode.
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| 211 | *
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| 212 | * @retval true - success.
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| 213 | * @retval false - failure.
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| 214 | */
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| 215 | bool releaseTCP(void);
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| 216 |
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| 217 | /**
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| 218 | * Register UDP port number in single mode.
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| 219 | *
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| 220 | * @param addr - the IP or domain name of the target host.
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| 221 | * @param port - the port number of the target host.
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| 222 | * @retval true - success.
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| 223 | * @retval false - failure.
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| 224 | */
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| 225 | bool registerUDP(String addr, uint32_t port);
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| 226 |
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| 227 | /**
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| 228 | * Unregister UDP port number in single mode.
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| 229 | *
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| 230 | * @retval true - success.
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| 231 | * @retval false - failure.
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| 232 | */
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| 233 | bool unregisterUDP(void);
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| 234 |
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| 235 | /**
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| 236 | * Create TCP connection in multiple mode.
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| 237 | *
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| 238 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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| 239 | * @param addr - the IP or domain name of the target host.
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| 240 | * @param port - the port number of the target host.
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| 241 | * @retval true - success.
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| 242 | * @retval false - failure.
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| 243 | */
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| 244 | bool createTCP(uint8_t mux_id, String addr, uint32_t port);
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| 245 |
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| 246 | /**
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| 247 | * Release TCP connection in multiple mode.
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| 248 | *
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| 249 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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| 250 | * @retval true - success.
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| 251 | * @retval false - failure.
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| 252 | */
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| 253 | bool releaseTCP(uint8_t mux_id);
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| 254 |
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| 255 | /**
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| 256 | * Register UDP port number in multiple mode.
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| 257 | *
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| 258 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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| 259 | * @param addr - the IP or domain name of the target host.
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| 260 | * @param port - the port number of the target host.
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| 261 | * @retval true - success.
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| 262 | * @retval false - failure.
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| 263 | */
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| 264 | bool registerUDP(uint8_t mux_id, String addr, uint32_t port);
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| 265 |
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| 266 | /**
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| 267 | * Unregister UDP port number in multiple mode.
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| 268 | *
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| 269 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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| 270 | * @retval true - success.
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| 271 | * @retval false - failure.
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| 272 | */
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| 273 | bool unregisterUDP(uint8_t mux_id);
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| 274 |
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| 275 |
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| 276 | /**
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| 277 | * Set the timeout of TCP Server.
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| 278 | *
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| 279 | * @param timeout - the duration for timeout by second(0 ~ 28800, default:180).
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| 280 | * @retval true - success.
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| 281 | * @retval false - failure.
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| 282 | */
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| 283 | bool setTCPServerTimeout(uint32_t timeout = 180);
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| 284 |
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| 285 | /**
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| 286 | * Start TCP Server(Only in multiple mode).
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| 287 | *
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| 288 | * After started, user should call method: getIPStatus to know the status of TCP connections.
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| 289 | * The methods of receiving data can be called for user's any purpose. After communication,
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| 290 | * release the TCP connection is needed by calling method: releaseTCP with mux_id.
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| 291 | *
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| 292 | * @param port - the port number to listen(default: 333).
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| 293 | * @retval true - success.
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| 294 | * @retval false - failure.
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| 295 | *
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| 296 | * @see String getIPStatus(void);
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| 297 | * @see uint32_t recv(uint8_t *coming_mux_id, uint8_t *buffer, uint32_t len, uint32_t timeout);
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| 298 | * @see bool releaseTCP(uint8_t mux_id);
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| 299 | */
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| 300 | bool startTCPServer(uint32_t port = 333);
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| 301 |
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| 302 | /**
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| 303 | * Stop TCP Server(Only in multiple mode).
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| 304 | *
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| 305 | * @retval true - success.
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| 306 | * @retval false - failure.
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| 307 | */
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| 308 | bool stopTCPServer(void);
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| 309 |
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| 310 | /**
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| 311 | * Start Server(Only in multiple mode).
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| 312 | *
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| 313 | * @param port - the port number to listen(default: 333).
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| 314 | * @retval true - success.
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| 315 | * @retval false - failure.
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| 316 | *
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| 317 | * @see String getIPStatus(void);
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| 318 | * @see uint32_t recv(uint8_t *coming_mux_id, uint8_t *buffer, uint32_t len, uint32_t timeout);
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| 319 | */
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| 320 | bool startServer(uint32_t port = 333);
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| 321 |
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| 322 | /**
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| 323 | * Stop Server(Only in multiple mode).
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| 324 | *
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| 325 | * @retval true - success.
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| 326 | * @retval false - failure.
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| 327 | */
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| 328 | bool stopServer(void);
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| 329 |
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| 330 | /**
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| 331 | * Send data based on TCP or UDP builded already in single mode.
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| 332 | *
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| 333 | * @param buffer - the buffer of data to send.
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| 334 | * @param len - the length of data to send.
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| 335 | * @retval true - success.
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| 336 | * @retval false - failure.
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| 337 | */
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| 338 | bool send(const uint8_t *buffer, uint32_t len);
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| 339 |
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| 340 | /**
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| 341 | * Send data based on one of TCP or UDP builded already in multiple mode.
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| 342 | *
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| 343 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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| 344 | * @param buffer - the buffer of data to send.
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| 345 | * @param len - the length of data to send.
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| 346 | * @retval true - success.
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| 347 | * @retval false - failure.
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| 348 | */
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| 349 | bool send(uint8_t mux_id, const uint8_t *buffer, uint32_t len);
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| 350 |
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| 351 | /**
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| 352 | * Send data based on TCP or UDP builded already in single mode.
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| 353 | *
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| 354 | * @param str - String to send.
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| 355 | * @retval true - success.
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| 356 | * @retval false - failure.
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| 357 | */
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| 358 | bool send(String &str);
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| 359 |
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| 360 | /**
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| 361 | * Send data based on one of TCP or UDP builded already in multiple mode.
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| 362 | *
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| 363 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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| 364 | * @param str - String to send.
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| 365 | * @retval true - success.
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| 366 | * @retval false - failure.
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| 367 | */
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| 368 | bool send(uint8_t mux_id, String &str);
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| 369 |
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| 370 | /**
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| 371 | * Receive data from TCP or UDP builded already in single mode.
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| 372 | *
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| 373 | * @param buffer - the buffer for storing data.
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| 374 | * @param buffer_size - the length of the buffer.
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| 375 | * @param timeout - the time waiting data.
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| 376 | * @return the length of data received actually.
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| 377 | */
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| 378 | uint32_t recv(uint8_t *buffer, uint32_t buffer_size, uint32_t timeout = 1000);
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| 379 |
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| 380 | /**
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| 381 | * Receive data from one of TCP or UDP builded already in multiple mode.
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| 382 | *
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| 383 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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| 384 | * @param buffer - the buffer for storing data.
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| 385 | * @param buffer_size - the length of the buffer.
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| 386 | * @param timeout - the time waiting data.
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| 387 | * @return the length of data received actually.
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| 388 | */
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| 389 | uint32_t recv(uint8_t mux_id, uint8_t *buffer, uint32_t buffer_size, uint32_t timeout = 1000);
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| 390 |
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| 391 | /**
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| 392 | * Receive data from all of TCP or UDP builded already in multiple mode.
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| 393 | *
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| 394 | * After return, coming_mux_id store the id of TCP or UDP from which data coming.
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| 395 | * User should read the value of coming_mux_id and decide what next to do.
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| 396 | *
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| 397 | * @param coming_mux_id - the identifier of TCP or UDP.
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| 398 | * @param buffer - the buffer for storing data.
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| 399 | * @param buffer_size - the length of the buffer.
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| 400 | * @param timeout - the time waiting data.
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| 401 | * @return the length of data received actually.
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| 402 | */
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| 403 | uint32_t recv(uint8_t *coming_mux_id, uint8_t *buffer, uint32_t buffer_size, uint32_t timeout = 1000);
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| 404 |
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| 405 | private:
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| 406 |
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| 407 | /*
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| 408 | * Empty the buffer or UART RX.
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| 409 | */
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| 410 | void rx_empty(void);
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| 411 |
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| 412 | /*
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| 413 | * Recvive data from uart. Return all received data if target found or timeout.
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| 414 | */
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| 415 | String recvString(String target, uint32_t timeout = 1000);
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| 416 |
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| 417 | /*
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| 418 | * Recvive data from uart. Return all received data if one of target1 and target2 found or timeout.
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| 419 | */
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| 420 | String recvString(String target1, String target2, uint32_t timeout = 1000);
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| 421 |
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| 422 | /*
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| 423 | * Recvive data from uart. Return all received data if one of target1, target2 and target3 found or timeout.
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| 424 | */
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| 425 | String recvString(String target1, String target2, String target3, uint32_t timeout = 1000);
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| 426 |
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| 427 | /*
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| 428 | * Recvive data from uart and search first target. Return true if target found, false for timeout.
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| 429 | */
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| 430 | bool recvFind(String target, uint32_t timeout = 1000);
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| 431 |
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| 432 | /*
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| 433 | * Recvive data from uart and search first target and cut out the substring between begin and end(excluding begin and end self).
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| 434 | * Return true if target found, false for timeout.
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| 435 | */
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| 436 | bool recvFindAndFilter(String target, String begin, String end, String &data, uint32_t timeout = 1000);
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| 437 |
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| 438 | /*
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| 439 | * Receive a package from uart.
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| 440 | *
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| 441 | * @param buffer - the buffer storing data.
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| 442 | * @param buffer_size - guess what!
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| 443 | * @param data_len - the length of data actually received(maybe more than buffer_size, the remained data will be abandoned).
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| 444 | * @param timeout - the duration waitting data comming.
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| 445 | * @param coming_mux_id - in single connection mode, should be NULL and not NULL in multiple.
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| 446 | */
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| 447 | uint32_t recvPkg(uint8_t *buffer, uint32_t buffer_size, uint32_t *data_len, uint32_t timeout, uint8_t *coming_mux_id);
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| 448 |
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| 449 |
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| 450 | bool eAT(void);
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| 451 | bool eATRST(void);
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| 452 | bool eATGMR(String &version);
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| 453 |
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| 454 | bool qATCWMODE(uint8_t *mode);
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| 455 | bool sATCWMODE(uint8_t mode);
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| 456 | bool sATCWJAP(String ssid, String pwd);
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| 457 | bool eATCWLAP(String &list);
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| 458 | bool eATCWQAP(void);
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| 459 | bool sATCWSAP(String ssid, String pwd, uint8_t chl, uint8_t ecn);
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| 460 | bool eATCWLIF(String &list);
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| 461 |
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| 462 | bool eATCIPSTATUS(String &list);
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| 463 | bool sATCIPSTARTSingle(String type, String addr, uint32_t port);
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| 464 | bool sATCIPSTARTMultiple(uint8_t mux_id, String type, String addr, uint32_t port);
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| 465 | bool sATCIPSENDSingle(const uint8_t *buffer, uint32_t len);
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| 466 | bool sATCIPSENDMultiple(uint8_t mux_id, const uint8_t *buffer, uint32_t len);
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| 467 | bool sATCIPSENDSingle(String &str);
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| 468 | bool sATCIPSENDMultiple(uint8_t mux_id, String &str);
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| 469 | bool sATCIPCLOSEMulitple(uint8_t mux_id);
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| 470 | bool eATCIPCLOSESingle(void);
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| 471 | bool eATCIFSR(String &list);
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| 472 | bool sATCIPMUX(uint8_t mode);
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| 473 | bool sATCIPSERVER(uint8_t mode, uint32_t port = 333);
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| 474 | bool sATCIPSTO(uint32_t timeout);
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| 475 |
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| 476 | /*
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| 477 | * +IPD,len:data
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| 478 | * +IPD,id,len:data
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| 479 | */
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| 480 |
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| 481 | #ifdef ESP8266_USE_SOFTWARE_SERIAL
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| 482 | SoftwareSerial *m_puart; /* The UART to communicate with ESP8266 */
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| 483 | #else
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| 484 | HardwareSerial *m_puart; /* The UART to communicate with ESP8266 */
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| 485 | #endif
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| 486 | uint32_t m_baud;
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| 487 | };
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| 488 |
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| 489 | #endif /* #ifndef __ESP8266_H__ */
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| 490 |
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