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 | * Copyright (C) 2015 Embedded and Real-Time Systems Laboratory
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10 | * Graduate School of Information Science, Nagoya Univ., JAPAN \n\n
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11 | * This program is free software; you can redistribute it and/or
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12 | * modify it under the terms of the GNU General Public License as
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13 | * published by the Free Software Foundation; either version 2 of
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14 | * the License, or (at your option) any later version. \n\n
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15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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21 | * THE SOFTWARE.
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22 | */
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23 | #ifndef __ESP8266_H__
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24 | #define __ESP8266_H__
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25 |
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26 | #include "Arduino.h"
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27 |
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28 | //#define ESP8266_USE_SOFTWARE_SERIAL
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29 |
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30 | #define ESP8266_SUPPORT_VERSION "AT version:0.25"
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31 |
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32 | #define ESP8266_NUM_CONNECTION 5
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33 |
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34 | #ifdef ESP8266_USE_SOFTWARE_SERIAL
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35 | #include "SoftwareSerial.h"
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36 | #endif /* ESP8266_USE_SOFTWARE_SERIAL */
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37 |
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38 | #define ESP8266_CONNECTION_OPEN 0x01
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39 | #define ESP8266_CONNECTION_CLOSE 0x02
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40 |
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41 | #define ESP8266_CONNECTION_TCP 0x01
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42 | #define ESP8266_CONNECTION_UDP 0x02
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43 |
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44 | #define ESP8266_CONNECTION_CLIENT 0x01
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45 | #define ESP8266_CONNECTION_SERVER 0x02
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46 |
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47 | #define ESP8266_STATUS_GOTIP 0x02
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48 | #define ESP8266_STATUS_CONNECTED 0x03
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49 | #define ESP8266_STATUS_DISCONNECTED 0x04
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50 |
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51 | #define ESP8266_WMODE_STATION 0x01
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52 | #define ESP8266_WMODE_SOFTAP 0x02
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53 | #define ESP8266_WMODE_AP_STATION 0x03
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54 |
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55 | struct esp8266_connection_status
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56 | {
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57 | uint8_t connection_type;
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58 | uint8_t protocol_type;
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59 | };
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60 |
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61 | #define ESP8266_RINGBUFFER_SIZE 1024
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62 |
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63 | class ESP8266_RingBuffer
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64 | {
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65 | public:
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66 | ESP8266_RingBuffer(void);
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67 | void init(void);
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68 | void free(void) {len = head = tail = 0;};
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69 | bool write(uint8_t c);
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70 | uint8_t read(void);
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71 | uint32_t copy(uint8_t *pdata, uint32_t size);
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72 | uint8_t peek(void);
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73 | bool available(void) {return (len > 0);};
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74 | bool isFull(void) {return (len == ESP8266_RINGBUFFER_SIZE);};
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75 | uint32_t length(void) {return len;};
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76 |
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77 | private:
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78 | uint8_t *buffer;
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79 | uint32_t head;
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80 | uint32_t tail;
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81 | uint32_t len;
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82 | };
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83 |
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84 | /**
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85 | * Provide an easy-to-use way to manipulate ESP8266.
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86 | */
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87 | class ESP8266 {
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88 | public:
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89 |
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90 | /*
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91 | * Begin.
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92 | *
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93 | * @param uart - an reference of SoftwareSerial object.
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94 | * @param baud - the buad rate to communicate with ESP8266(default:115200).
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95 | *
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96 | * @retval 0 : Success
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97 | * @retval 1 : Can not communicate ESP8266
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98 | * @retval 2 : Firmware Version mismatch.
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99 | *
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100 | * @warning parameter baud depends on the AT firmware. 115200 is an common value.
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101 | */
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102 | #ifdef ESP8266_USE_SOFTWARE_SERIAL
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103 | int begin(SoftwareSerial &uart, uint32_t baud = 115200);
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104 | #else /* HardwareSerial */
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105 | int begin(HardwareSerial &uart, uint32_t baud = 115200);
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106 | #endif /* ESP8266_USE_SOFTWARE_SERIAL */
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107 |
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108 | /**
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109 | * Verify ESP8266 whether live or not.
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110 | *
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111 | * Actually, this method will send command "AT" to ESP8266 and waiting for "OK".
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112 | *
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113 | * @retval true - alive.
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114 | * @retval false - dead.
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115 | */
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116 | bool kick(void);
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117 |
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118 | /**
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119 | * Restart ESP8266 by "AT+RST".
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120 | *
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121 | * This method will take 3 seconds or more.
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122 | *
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123 | * @retval true - success.
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124 | * @retval false - failure.
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125 | */
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126 | bool restart(void);
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127 |
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128 | /**
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129 | * Get the version of AT Command Set.
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130 | *
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131 | * @return the string of version.
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132 | */
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133 | String getVersion(void);
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134 |
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135 | /**
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136 | * Set operation mode to staion.
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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 setOprToStation(void);
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142 |
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143 | /**
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144 | * Set operation mode to softap.
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145 | *
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146 | * @retval true - success.
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147 | * @retval false - failure.
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148 | */
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149 | bool setOprToSoftAP(void);
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150 |
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151 | /**
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152 | * Set operation mode to station + softap.
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153 | *
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154 | * @retval true - success.
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155 | * @retval false - failure.
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156 | */
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157 | bool setOprToStationSoftAP(void);
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158 |
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159 | /**
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160 | * Search available AP list and return it.
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161 | *
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162 | * @return the list of available APs.
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163 | * @note This method will occupy a lot of memeory(hundreds of Bytes to a couple of KBytes).
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164 | * Do not call this method unless you must and ensure that your board has enough memery left.
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165 | */
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166 | String getAPList(void);
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167 |
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168 | /**
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169 | * Join in AP.
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170 | *
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171 | * @param ssid - SSID of AP to join in.
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172 | * @param pwd - Password of AP to join in.
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173 | * @retval true - success.
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174 | * @retval false - failure.
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175 | * @note This method will take a couple of seconds.
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176 | */
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177 | bool joinAP(String ssid, String pwd);
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178 |
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179 | /**
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180 | * Leave AP joined before.
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181 | *
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182 | * @retval true - success.
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183 | * @retval false - failure.
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184 | */
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185 | bool leaveAP(void);
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186 |
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187 | /**
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188 | * Set SoftAP parameters.
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189 | *
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190 | * @param ssid - SSID of SoftAP.
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191 | * @param pwd - PASSWORD of SoftAP.
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192 | * @param chl - the channel (1 - 13, default: 7).
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193 | * @param ecn - the way of encrypstion (0 - OPEN, 1 - WEP,
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194 | * 2 - WPA_PSK, 3 - WPA2_PSK, 4 - WPA_WPA2_PSK, default: 4).
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195 | * @note This method should not be called when station mode.
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196 | */
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197 | bool setSoftAPParam(String ssid, String pwd, uint8_t chl = 7, uint8_t ecn = 4);
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198 |
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199 | /**
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200 | * Get the IP list of devices connected to SoftAP.
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201 | *
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202 | * @return the list of IP.
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203 | * @note This method should not be called when station mode.
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204 | */
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205 | String getJoinedDeviceIP(void);
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206 |
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207 | /**
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208 | * Get the current status of connection(UDP and TCP).
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209 | *
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210 | * @return the status.
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211 | */
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212 | String getIPStatus(void);
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213 |
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214 | /**
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215 | * Get the IP address of ESP8266.
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216 | *
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217 | * @return the IP list.
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218 | */
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219 | String getLocalIP(void);
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220 |
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221 | /**
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222 | * Enable IP MUX(multiple connection mode).
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223 | *
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224 | * In multiple connection mode, a couple of TCP and UDP communication can be builded.
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225 | * They can be distinguished by the identifier of TCP or UDP named mux_id.
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226 | *
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227 | * @retval true - success.
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228 | * @retval false - failure.
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229 | */
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230 | bool enableMUX(void);
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231 |
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232 | /**
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233 | * Disable IP MUX(single connection mode).
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234 | *
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235 | * In single connection mode, only one TCP or UDP communication can be builded.
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236 | *
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237 | * @retval true - success.
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238 | * @retval false - failure.
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239 | */
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240 | bool disableMUX(void);
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241 |
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242 |
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243 | /**
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244 | * Create TCP connection in single mode.
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245 | *
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246 | * @param addr - the IP or domain name of the target host.
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247 | * @param port - the port number of the target host.
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248 | * @retval true - success.
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249 | * @retval false - failure.
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250 | */
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251 | bool createTCP(String addr, uint32_t port);
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252 |
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253 | /**
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254 | * Release TCP connection in single mode.
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255 | *
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256 | * @retval true - success.
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257 | * @retval false - failure.
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258 | */
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259 | bool releaseTCP(void);
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260 |
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261 | /**
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262 | * Register UDP port number in single mode.
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263 | *
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264 | * @param addr - the IP or domain name of the target host.
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265 | * @param port - the port number of the target host.
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266 | * @retval true - success.
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267 | * @retval false - failure.
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268 | */
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269 | bool registerUDP(String addr, uint32_t port);
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270 |
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271 | /**
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272 | * Unregister UDP port number in single mode.
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273 | *
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274 | * @retval true - success.
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275 | * @retval false - failure.
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276 | */
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277 | bool unregisterUDP(void);
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278 |
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279 | /**
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280 | * Create TCP connection in multiple mode.
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281 | *
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282 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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283 | * @param addr - the IP or domain name of the target host.
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284 | * @param port - the port number of the target host.
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285 | * @retval true - success.
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286 | * @retval false - failure.
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287 | */
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288 | bool createTCP(uint8_t mux_id, String addr, uint32_t port);
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289 |
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290 | /**
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291 | * Release TCP connection in multiple mode.
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292 | *
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293 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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294 | * @retval true - success.
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295 | * @retval false - failure.
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296 | */
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297 | bool releaseTCP(uint8_t mux_id);
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298 |
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299 | /**
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300 | * Register UDP port number in multiple mode.
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301 | *
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302 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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303 | * @param addr - the IP or domain name of the target host.
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304 | * @param port - the port number of the target host.
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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 registerUDP(uint8_t mux_id, String addr, uint32_t port);
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309 |
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310 | /**
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311 | * Unregister UDP port number in multiple mode.
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312 | *
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313 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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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 | bool unregisterUDP(uint8_t mux_id);
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318 |
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319 |
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320 | /**
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321 | * Set the timeout of TCP Server.
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322 | *
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323 | * @param timeout - the duration for timeout by second(0 ~ 28800, default:180).
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324 | * @retval true - success.
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325 | * @retval false - failure.
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326 | */
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327 | bool setTCPServerTimeout(uint32_t timeout = 180);
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328 |
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329 | /**
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330 | * Start TCP Server(Only in multiple mode).
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331 | *
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332 | * After started, user should call method: getIPStatus to know the status of TCP connections.
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333 | * The methods of receiving data can be called for user's any purpose. After communication,
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334 | * release the TCP connection is needed by calling method: releaseTCP with mux_id.
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335 | *
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336 | * @param port - the port number to listen(default: 333).
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337 | * @retval true - success.
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338 | * @retval false - failure.
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339 | *
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340 | * @see String getIPStatus(void);
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341 | * @see uint32_t recv(uint8_t *coming_mux_id, uint8_t *buffer, uint32_t len, uint32_t timeout);
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342 | * @see bool releaseTCP(uint8_t mux_id);
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343 | */
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344 | bool startTCPServer(uint32_t port = 333);
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345 |
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346 | /**
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347 | * Stop TCP Server(Only in multiple mode).
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348 | *
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349 | * @retval true - success.
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350 | * @retval false - failure.
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351 | */
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352 | bool stopTCPServer(void);
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353 |
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354 | /**
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355 | * Start Server(Only in multiple mode).
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356 | *
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357 | * @param port - the port number to listen(default: 333).
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358 | * @retval true - success.
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359 | * @retval false - failure.
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360 | *
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361 | * @see String getIPStatus(void);
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362 | * @see uint32_t recv(uint8_t *coming_mux_id, uint8_t *buffer, uint32_t len, uint32_t timeout);
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363 | */
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364 | bool startServer(uint32_t port = 333);
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365 |
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366 | /**
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367 | * Stop Server(Only in multiple mode).
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368 | *
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369 | * @retval true - success.
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370 | * @retval false - failure.
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371 | */
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372 | bool stopServer(void);
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373 |
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374 | /**
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375 | * Send data based on TCP or UDP builded already in single mode.
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376 | *
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377 | * @param buffer - the buffer of data to send.
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378 | * @param len - the length of data to send.
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379 | * @retval true - success.
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380 | * @retval false - failure.
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381 | */
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382 | bool send(const uint8_t *buffer, uint32_t len);
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383 |
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384 | /**
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385 | * Send data based on one of TCP or UDP builded already in multiple mode.
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386 | *
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387 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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388 | * @param buffer - the buffer of data to send.
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389 | * @param len - the length of data to send.
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390 | * @retval true - success.
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391 | * @retval false - failure.
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392 | */
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393 | bool send(uint8_t mux_id, const uint8_t *buffer, uint32_t len);
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394 |
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395 | /**
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396 | * Send data based on TCP or UDP builded already in single mode.
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397 | *
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398 | * @param str - String to send.
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399 | * @retval true - success.
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400 | * @retval false - failure.
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401 | */
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402 | bool send(String &str);
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403 |
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404 | /**
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405 | * Send data based on one of TCP or UDP builded already in multiple mode.
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406 | *
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407 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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408 | * @param str - String to send.
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409 | * @retval true - success.
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410 | * @retval false - failure.
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411 | */
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412 | bool send(uint8_t mux_id, String &str);
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413 |
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414 | /**
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415 | * Receive data from TCP or UDP builded already in single mode.
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416 | *
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417 | * @param buffer - the buffer for storing data.
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418 | * @param buffer_size - the length of the buffer.
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419 | * @param timeout - the time waiting data.
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420 | * @return the length of data received actually.
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421 | */
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422 | uint32_t recv(uint8_t *buffer, uint32_t buffer_size, uint32_t timeout = 1000);
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423 |
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424 | /**
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425 | * Receive data from one of TCP or UDP builded already in multiple mode.
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426 | *
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427 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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428 | * @param buffer - the buffer for storing data.
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429 | * @param buffer_size - the length of the buffer.
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430 | * @param timeout - the time waiting data.
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431 | * @return the length of data received actually.
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432 | */
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433 | uint32_t recv(uint8_t mux_id, uint8_t *buffer, uint32_t buffer_size, uint32_t timeout = 1000);
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434 |
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435 | /**
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436 | * Receive data from all of TCP or UDP builded already in multiple mode.
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437 | *
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438 | * After return, coming_mux_id store the id of TCP or UDP from which data coming.
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439 | * User should read the value of coming_mux_id and decide what next to do.
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440 | *
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441 | * @param coming_mux_id - the identifier of TCP or UDP.
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442 | * @param buffer - the buffer for storing data.
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443 | * @param buffer_size - the length of the buffer.
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444 | * @param timeout - the time waiting data.
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445 | * @return the length of data received actually.
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446 | */
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447 | uint32_t recv(uint8_t *coming_mux_id, uint8_t *buffer, uint32_t buffer_size, uint32_t timeout = 1000);
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448 |
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449 | /**
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450 | * Check data is available in specific connection.
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451 | *
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452 | * @param mux_id - the identifier of this TCP(available value: 0 - 4).
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453 | * @return true - data is available.
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454 | * @return false - data is not available.
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455 | */
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456 | bool isDataAvailable(uint8_t mux_id);
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457 |
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458 | /**
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459 | * Check data is available in any connection.
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460 | *
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461 | * @return true - data is available.
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462 | * @return false - data is not available.
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463 | */
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464 | bool isDataAvailable(void);
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465 |
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466 | /**
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467 | * Check connection is opned in single mode.
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468 | *
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469 | * @return true - opend.
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470 | * @return false - closed.
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471 | */
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472 | bool isConnected(void);
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473 |
|
---|
474 | /**
|
---|
475 | * Check specific connection is opned in multiple mode.
|
---|
476 | *
|
---|
477 | * @return true - opend.
|
---|
478 | * @return false - closed.
|
---|
479 | */
|
---|
480 | bool isConnected(uint8_t mux_id);
|
---|
481 |
|
---|
482 | /**
|
---|
483 | * Get connection link status
|
---|
484 | *
|
---|
485 | * @return true - success.
|
---|
486 | * @return false - error.
|
---|
487 | */
|
---|
488 | bool getMuxCStatus(uint8_t *mux_id_ptn);
|
---|
489 |
|
---|
490 | private:
|
---|
491 |
|
---|
492 | /*
|
---|
493 | * Empty the buffer or UART RX.
|
---|
494 | */
|
---|
495 | void rx_empty(void);
|
---|
496 |
|
---|
497 | /*
|
---|
498 | * Read all data in UART RX and store to Rceive Buffer .
|
---|
499 | */
|
---|
500 | void rx_update(void);
|
---|
501 |
|
---|
502 | /*
|
---|
503 | * Recvive data from uart. Return all received data if one of target1, target2 and target3 found or timeout.
|
---|
504 | */
|
---|
505 | int recvString(String target1, String target2, String target3, uint32_t timeout = 1000);
|
---|
506 |
|
---|
507 | /*
|
---|
508 | * Recvive data from uart and search first target. Return true if target found, false for timeout.
|
---|
509 | */
|
---|
510 | bool recvFind(String target, uint32_t timeout = 1000);
|
---|
511 |
|
---|
512 | /*
|
---|
513 | * Recvive data from uart and search first target and cut out the substring between begin and end(excluding begin and end self). a
|
---|
514 | * Return true if target found, false for timeout.
|
---|
515 | */
|
---|
516 | bool recvFindAndFilter(String target, String begin, String end, String &data, uint32_t timeout = 1000);
|
---|
517 |
|
---|
518 | /*
|
---|
519 | * Receive a package from uart.
|
---|
520 | *
|
---|
521 | * @param buffer - the buffer storing data.
|
---|
522 | * @param buffer_size - guess what!
|
---|
523 | * @param data_len - the length of data actually received(maybe more than buffer_size, the remained data will be abandoned).
|
---|
524 | * @param timeout - the duration waitting data comming.
|
---|
525 | * @param coming_mux_id - in single connection mode, should be NULL and not NULL in multiple.
|
---|
526 | */
|
---|
527 | uint32_t recvPkg(uint8_t *buffer, uint32_t buffer_size, uint32_t timeout, uint8_t mux_id, uint8_t *coming_mux_id);
|
---|
528 |
|
---|
529 | bool eAT(void);
|
---|
530 | bool eATRST(void);
|
---|
531 | bool eATGMR(String &version);
|
---|
532 |
|
---|
533 | bool qATCWMODE_CUR(uint8_t *mode);
|
---|
534 | bool sATCWMODE_CUR(uint8_t mode);
|
---|
535 | bool sATCWJAP_CUR(String ssid, String pwd);
|
---|
536 | bool eATCWLAP(String &list);
|
---|
537 | bool eATCWQAP(void);
|
---|
538 | bool sATCWSAP_CUR(String ssid, String pwd, uint8_t chl, uint8_t ecn);
|
---|
539 | bool eATCWLIF(String &list);
|
---|
540 |
|
---|
541 | bool eATCIPSTATUS(String &list);
|
---|
542 | bool sATCIPSTARTSingle(String type, String addr, uint32_t port);
|
---|
543 | bool sATCIPSTARTMultiple(uint8_t mux_id, String type, String addr, uint32_t port);
|
---|
544 | bool sATCIPSENDSingle(const uint8_t *buffer, uint32_t len);
|
---|
545 | bool sATCIPSENDMultiple(uint8_t mux_id, const uint8_t *buffer, uint32_t len);
|
---|
546 | bool sATCIPSENDSingle(String &str);
|
---|
547 | bool sATCIPSENDMultiple(uint8_t mux_id, String &str);
|
---|
548 | bool sATCIPCLOSEMulitple(uint8_t mux_id);
|
---|
549 | bool eATCIPCLOSESingle(void);
|
---|
550 | bool eATCIFSR(String &list);
|
---|
551 | bool sATCIPMUX(uint8_t mode);
|
---|
552 | bool sATCIPSERVER(uint8_t mode, uint32_t port = 333);
|
---|
553 | bool sATCIPSTO(uint32_t timeout);
|
---|
554 |
|
---|
555 | void initialize_status(void);
|
---|
556 |
|
---|
557 | uint32_t recvIPD(uint32_t timeout, uint8_t *buffer = NULL, uint32_t buffer_size = 0,
|
---|
558 | uint8_t mux_id = 0, uint8_t *coming_mux_id = NULL);
|
---|
559 |
|
---|
560 | void recvAsyncdata(uint32_t timeout = 0);
|
---|
561 |
|
---|
562 | /**
|
---|
563 | * Restart ESP8266 by "AT+RST".
|
---|
564 | *
|
---|
565 | * This method will take 3 seconds or more.
|
---|
566 | *
|
---|
567 | * @retval true - success.
|
---|
568 | * @retval false - failure.
|
---|
569 | */
|
---|
570 | bool _restart(void);
|
---|
571 |
|
---|
572 | #ifdef ESP8266_USE_SOFTWARE_SERIAL
|
---|
573 | SoftwareSerial *m_puart; /* The UART to communicate with ESP8266 */
|
---|
574 | #else
|
---|
575 | HardwareSerial *m_puart; /* The UART to communicate with ESP8266 */
|
---|
576 | #endif
|
---|
577 | uint32_t m_baud;
|
---|
578 |
|
---|
579 | uint8_t wifi_status;
|
---|
580 |
|
---|
581 | bool mux_mode;
|
---|
582 |
|
---|
583 | uint8_t connection_bitmap;
|
---|
584 |
|
---|
585 | esp8266_connection_status connection_status[ESP8266_NUM_CONNECTION];
|
---|
586 |
|
---|
587 | String rx_cmd;
|
---|
588 |
|
---|
589 | protected:
|
---|
590 | /**
|
---|
591 | * Rceive Buffer for each link.
|
---|
592 | */
|
---|
593 | ESP8266_RingBuffer rx_buffer[ESP8266_NUM_CONNECTION];
|
---|
594 | };
|
---|
595 |
|
---|
596 | #endif /* #ifndef __ESP8266_H__ */
|
---|
597 |
|
---|