Steve Kim / ESP8266Interface

Added monitoring feature of ESP8266's UART

Dependents:   ESP8266_W7500_Example DualNetworkInterface-Basic

Fork of ESP8266Interface by ESP8266

ESP8266/ESP8266.h@15:37a7a56a424f, 2014-11-30 (annotated)

Committer:
michaeljkoster
Date:
Sun Nov 30 21:56:03 2014 +0000
Revision:
15:37a7a56a424f
Parent:
14:4d1128f72e00
Child:
16:3f0efaa57a12
reorganize

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 1:fb4494783863 1 /* Copyright (C) 2012 mbed.org, MIT License
samux 1:fb4494783863 2 *
samux 1:fb4494783863 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 1:fb4494783863 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
samux 1:fb4494783863 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
samux 1:fb4494783863 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
samux 1:fb4494783863 7 * furnished to do so, subject to the following conditions:
samux 1:fb4494783863 8 *
samux 1:fb4494783863 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 1:fb4494783863 10 * substantial portions of the Software.
samux 1:fb4494783863 11 *
samux 1:fb4494783863 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 1:fb4494783863 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 1:fb4494783863 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 1:fb4494783863 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 1:fb4494783863 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 1:fb4494783863 17 *
samux 1:fb4494783863 18 * @section DESCRIPTION
samux 1:fb4494783863 19 *
michaeljkoster 13:41098c907200 20 * ESP8266 RN131-C, wifi module
samux 1:fb4494783863 21 *
samux 1:fb4494783863 22 * Datasheet:
samux 1:fb4494783863 23 *
michaeljkoster 13:41098c907200 24 * http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Wireless/WiFi/ESP8266-RN-UM.pdf
samux 1:fb4494783863 25 */
samux 1:fb4494783863 26
michaeljkoster 13:41098c907200 27 #ifndef ESP8266_H
michaeljkoster 13:41098c907200 28 #define ESP8266_H
samux 1:fb4494783863 29
samux 1:fb4494783863 30 #include "mbed.h"
samux 1:fb4494783863 31 #include "CBuffer.h"
samux 1:fb4494783863 32
samux 1:fb4494783863 33 #define DEFAULT_WAIT_RESP_TIMEOUT 500
samux 1:fb4494783863 34
screamer 5:81e264dbbf03 35 /**
michaeljkoster 13:41098c907200 36 * The ESP8266 class
screamer 5:81e264dbbf03 37 */
michaeljkoster 13:41098c907200 38 class ESP8266
samux 1:fb4494783863 39 {
samux 1:fb4494783863 40
samux 1:fb4494783863 41 public:
screamer 5:81e264dbbf03 42 /**
samux 1:fb4494783863 43 * Constructor
samux 1:fb4494783863 44 *
samux 1:fb4494783863 45 * @param tx mbed pin to use for tx line of Serial interface
samux 1:fb4494783863 46 * @param rx mbed pin to use for rx line of Serial interface
samux 1:fb4494783863 47 * @param reset reset pin of the wifi module ()
samux 1:fb4494783863 48 * @param ssid ssid of the network
screamer 9:f2439377c172 49 * @param phrase WEP, WPA or WPA2 key
samux 1:fb4494783863 50 */
michaeljkoster 13:41098c907200 51 ESP8266( PinName tx, PinName rx, PinName reset, const char * ssid, const char * phrase );
samux 1:fb4494783863 52
screamer 5:81e264dbbf03 53 /**
samux 1:fb4494783863 54 * Connect the wifi module to the ssid contained in the constructor.
samux 1:fb4494783863 55 *
samux 1:fb4494783863 56 * @return true if connected, false otherwise
samux 1:fb4494783863 57 */
samux 1:fb4494783863 58 bool join();
samux 1:fb4494783863 59
screamer 5:81e264dbbf03 60 /**
michaeljkoster 15:37a7a56a424f 61 * Same as Join: connect to the ssid and get DHCP settings
screamer 6:5176e0864078 62 * @return true if successful
samux 1:fb4494783863 63 */
michaeljkoster 13:41098c907200 64 bool connect();
michaeljkoster 13:41098c907200 65
screamer 5:81e264dbbf03 66 /**
michaeljkoster 13:41098c907200 67 * Check connection to the access point
screamer 6:5176e0864078 68 * @return true if successful
samux 1:fb4494783863 69 */
michaeljkoster 13:41098c907200 70 bool is_connected();
samux 1:fb4494783863 71
screamer 5:81e264dbbf03 72 /**
michaeljkoster 15:37a7a56a424f 73 * Disconnect the ESP8266 module from the access point
michaeljkoster 15:37a7a56a424f 74 *
michaeljkoster 15:37a7a56a424f 75 * @return true if successful
michaeljkoster 15:37a7a56a424f 76 */
michaeljkoster 15:37a7a56a424f 77 bool disconnect();
michaeljkoster 15:37a7a56a424f 78
michaeljkoster 15:37a7a56a424f 79 /**
michaeljkoster 15:37a7a56a424f 80 * Close a tcp connection
michaeljkoster 15:37a7a56a424f 81 *
michaeljkoster 15:37a7a56a424f 82 * @return true if successful
michaeljkoster 15:37a7a56a424f 83 */
michaeljkoster 15:37a7a56a424f 84 bool close();
michaeljkoster 15:37a7a56a424f 85
michaeljkoster 15:37a7a56a424f 86 /**
michaeljkoster 14:4d1128f72e00 87 * Return the IP address
michaeljkoster 14:4d1128f72e00 88 * @return IP address as a string
michaeljkoster 14:4d1128f72e00 89 */
michaeljkoster 14:4d1128f72e00 90 char* getIPAddress();
michaeljkoster 15:37a7a56a424f 91
michaeljkoster 15:37a7a56a424f 92 /**
michaeljkoster 15:37a7a56a424f 93 * Return the IP address from host name
michaeljkoster 15:37a7a56a424f 94 * @return IP address as a string
michaeljkoster 15:37a7a56a424f 95 */ bool gethostbyname(const char * host, char * ip);
michaeljkoster 15:37a7a56a424f 96
michaeljkoster 14:4d1128f72e00 97 /**
samux 1:fb4494783863 98 * Reset the wifi module
samux 1:fb4494783863 99 */
samux 1:fb4494783863 100 void reset();
samux 3:9aa05e19c62e 101
screamer 5:81e264dbbf03 102 /**
samux 3:9aa05e19c62e 103 * Reboot the wifi module
samux 3:9aa05e19c62e 104 */
samux 3:9aa05e19c62e 105 bool reboot();
samux 1:fb4494783863 106
screamer 5:81e264dbbf03 107 /**
samux 1:fb4494783863 108 * Check if characters are available
samux 1:fb4494783863 109 *
samux 1:fb4494783863 110 * @return number of available characters
samux 1:fb4494783863 111 */
samux 1:fb4494783863 112 int readable();
samux 1:fb4494783863 113
screamer 5:81e264dbbf03 114 /**
samux 1:fb4494783863 115 * Check if characters are available
samux 1:fb4494783863 116 *
samux 1:fb4494783863 117 * @return number of available characters
samux 1:fb4494783863 118 */
samux 1:fb4494783863 119 int writeable();
samux 1:fb4494783863 120
screamer 5:81e264dbbf03 121 /**
samux 1:fb4494783863 122 * Read a character
samux 1:fb4494783863 123 *
samux 1:fb4494783863 124 * @return the character read
samux 1:fb4494783863 125 */
samux 1:fb4494783863 126 char getc();
samux 1:fb4494783863 127
screamer 5:81e264dbbf03 128 /**
samux 1:fb4494783863 129 * Write a character
samux 1:fb4494783863 130 *
samux 1:fb4494783863 131 * @param the character which will be written
samux 1:fb4494783863 132 */
samux 1:fb4494783863 133 int putc(char c);
samux 1:fb4494783863 134
screamer 5:81e264dbbf03 135 /**
michaeljkoster 15:37a7a56a424f 136 * Flush the buffer
michaeljkoster 15:37a7a56a424f 137 */
michaeljkoster 15:37a7a56a424f 138 void flush();
michaeljkoster 15:37a7a56a424f 139
michaeljkoster 15:37a7a56a424f 140 /**
michaeljkoster 15:37a7a56a424f 141 * Send a command to the wify module. Check if the module is in command mode. If not enter in command mode
michaeljkoster 15:37a7a56a424f 142 *
michaeljkoster 15:37a7a56a424f 143 * @param str string to be sent
michaeljkoster 15:37a7a56a424f 144 * @param ACK string which must be acknowledge by the wifi module. If ACK == NULL, no string has to be acknoledged. (default: "NO")
michaeljkoster 15:37a7a56a424f 145 * @param res this field will contain the response from the wifi module, result of a command sent. This field is available only if ACK = "NO" AND res != NULL (default: NULL)
samux 1:fb4494783863 146 *
screamer 6:5176e0864078 147 * @return true if successful
samux 1:fb4494783863 148 */
michaeljkoster 15:37a7a56a424f 149 bool sendCommand(const char * cmd, const char * ack = NULL, char * res = NULL, int timeout = DEFAULT_WAIT_RESP_TIMEOUT);
michaeljkoster 15:37a7a56a424f 150
screamer 5:81e264dbbf03 151 /**
samux 1:fb4494783863 152 * Send a string to the wifi module by serial port. This function desactivates the user interrupt handler when a character is received to analyze the response from the wifi module.
samux 1:fb4494783863 153 * Useful to send a command to the module and wait a response.
samux 1:fb4494783863 154 *
samux 1:fb4494783863 155 *
samux 1:fb4494783863 156 * @param str string to be sent
samux 1:fb4494783863 157 * @param len string length
samux 1:fb4494783863 158 * @param ACK string which must be acknowledge by the wifi module. If ACK == NULL, no string has to be acknoledged. (default: "NO")
samux 1:fb4494783863 159 * @param res this field will contain the response from the wifi module, result of a command sent. This field is available only if ACK = "NO" AND res != NULL (default: NULL)
samux 1:fb4494783863 160 *
samux 1:fb4494783863 161 * @return true if ACK has been found in the response from the wifi module. False otherwise or if there is no response in 5s.
samux 1:fb4494783863 162 */
samux 1:fb4494783863 163 int send(const char * str, int len, const char * ACK = NULL, char * res = NULL, int timeout = DEFAULT_WAIT_RESP_TIMEOUT);
samux 1:fb4494783863 164
michaeljkoster 13:41098c907200 165 static ESP8266 * getInstance() {
samux 1:fb4494783863 166 return inst;
samux 1:fb4494783863 167 };
samux 1:fb4494783863 168
samux 1:fb4494783863 169 protected:
samux 1:fb4494783863 170 Serial wifi;
samux 1:fb4494783863 171 DigitalOut reset_pin;
samux 1:fb4494783863 172 char phrase[30];
samux 1:fb4494783863 173 char ssid[30];
michaeljkoster 14:4d1128f72e00 174 char ipString[20];
michaeljkoster 13:41098c907200 175 CircBuffer<char> buf_ESP8266;
samux 1:fb4494783863 176
michaeljkoster 13:41098c907200 177 static ESP8266 * inst;
samux 1:fb4494783863 178
samux 1:fb4494783863 179 void attach_rx(bool null);
samux 1:fb4494783863 180 void handler_rx(void);
samux 1:fb4494783863 181
samux 1:fb4494783863 182
samux 1:fb4494783863 183 typedef struct STATE {
samux 1:fb4494783863 184 bool associated;
samux 1:fb4494783863 185 } State;
samux 1:fb4494783863 186
samux 1:fb4494783863 187 State state;
samux 1:fb4494783863 188 };
samux 1:fb4494783863 189
samux 1:fb4494783863 190 #endif