Steve Kim / ESP8266Interface

Added monitoring feature of ESP8266's UART

Dependents:   ESP8266_W7500_Example DualNetworkInterface-Basic

Fork of ESP8266Interface by ESP8266

ESP8266/ESP8266.h@14:4d1128f72e00, 2014-11-30 (annotated)

Committer:
michaeljkoster
Date:
Sun Nov 30 21:37:16 2014 +0000
Revision:
14:4d1128f72e00
Parent:
13:41098c907200
Child:
15:37a7a56a424f
Add getIPAddress

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 13:41098c907200 61 * Disconnect the ESP8266 module from the access point
samux 1:fb4494783863 62 *
screamer 6:5176e0864078 63 * @return true if successful
samux 1:fb4494783863 64 */
samux 1:fb4494783863 65 bool disconnect();
samux 1:fb4494783863 66
screamer 5:81e264dbbf03 67 /**
michaeljkoster 13:41098c907200 68 * Join to the access point and get DHCP settings
screamer 6:5176e0864078 69 * @return true if successful
samux 1:fb4494783863 70 */
michaeljkoster 13:41098c907200 71 bool connect();
michaeljkoster 13:41098c907200 72
screamer 5:81e264dbbf03 73 /**
michaeljkoster 13:41098c907200 74 * Check connection to the access point
screamer 6:5176e0864078 75 * @return true if successful
samux 1:fb4494783863 76 */
michaeljkoster 13:41098c907200 77 bool is_connected();
samux 1:fb4494783863 78
screamer 5:81e264dbbf03 79 /**
michaeljkoster 14:4d1128f72e00 80 * Return the IP address
michaeljkoster 14:4d1128f72e00 81 * @return IP address as a string
michaeljkoster 14:4d1128f72e00 82 */
michaeljkoster 14:4d1128f72e00 83 char* getIPAddress();
michaeljkoster 14:4d1128f72e00 84 /**
samux 1:fb4494783863 85 * Reset the wifi module
samux 1:fb4494783863 86 */
samux 1:fb4494783863 87 void reset();
samux 3:9aa05e19c62e 88
screamer 5:81e264dbbf03 89 /**
samux 3:9aa05e19c62e 90 * Reboot the wifi module
samux 3:9aa05e19c62e 91 */
samux 3:9aa05e19c62e 92 bool reboot();
samux 1:fb4494783863 93
screamer 5:81e264dbbf03 94 /**
samux 1:fb4494783863 95 * Check if characters are available
samux 1:fb4494783863 96 *
samux 1:fb4494783863 97 * @return number of available characters
samux 1:fb4494783863 98 */
samux 1:fb4494783863 99 int readable();
samux 1:fb4494783863 100
screamer 5:81e264dbbf03 101 /**
samux 1:fb4494783863 102 * Check if characters are available
samux 1:fb4494783863 103 *
samux 1:fb4494783863 104 * @return number of available characters
samux 1:fb4494783863 105 */
samux 1:fb4494783863 106 int writeable();
samux 1:fb4494783863 107
screamer 5:81e264dbbf03 108 /**
samux 1:fb4494783863 109 * Read a character
samux 1:fb4494783863 110 *
samux 1:fb4494783863 111 * @return the character read
samux 1:fb4494783863 112 */
samux 1:fb4494783863 113 char getc();
samux 1:fb4494783863 114
screamer 5:81e264dbbf03 115 /**
samux 1:fb4494783863 116 * Flush the buffer
samux 1:fb4494783863 117 */
samux 1:fb4494783863 118 void flush();
samux 1:fb4494783863 119
screamer 5:81e264dbbf03 120 /**
samux 1:fb4494783863 121 * Write a character
samux 1:fb4494783863 122 *
samux 1:fb4494783863 123 * @param the character which will be written
samux 1:fb4494783863 124 */
samux 1:fb4494783863 125 int putc(char c);
samux 1:fb4494783863 126
screamer 5:81e264dbbf03 127 /**
samux 1:fb4494783863 128 * Close a tcp connection
samux 1:fb4494783863 129 *
screamer 6:5176e0864078 130 * @return true if successful
samux 1:fb4494783863 131 */
samux 1:fb4494783863 132 bool close();
michaeljkoster 13:41098c907200 133
screamer 5:81e264dbbf03 134 /**
samux 1:fb4494783863 135 * 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 136 * Useful to send a command to the module and wait a response.
samux 1:fb4494783863 137 *
samux 1:fb4494783863 138 *
samux 1:fb4494783863 139 * @param str string to be sent
samux 1:fb4494783863 140 * @param len string length
samux 1:fb4494783863 141 * @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 142 * @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 143 *
samux 1:fb4494783863 144 * @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 145 */
samux 1:fb4494783863 146 int send(const char * str, int len, const char * ACK = NULL, char * res = NULL, int timeout = DEFAULT_WAIT_RESP_TIMEOUT);
samux 1:fb4494783863 147
screamer 5:81e264dbbf03 148 /**
samux 1:fb4494783863 149 * Send a command to the wify module. Check if the module is in command mode. If not enter in command mode
samux 1:fb4494783863 150 *
samux 1:fb4494783863 151 * @param str string to be sent
samux 1:fb4494783863 152 * @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 153 * @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 154 *
screamer 6:5176e0864078 155 * @return true if successful
samux 1:fb4494783863 156 */
samux 1:fb4494783863 157 bool sendCommand(const char * cmd, const char * ack = NULL, char * res = NULL, int timeout = DEFAULT_WAIT_RESP_TIMEOUT);
samux 1:fb4494783863 158
samux 1:fb4494783863 159 bool gethostbyname(const char * host, char * ip);
samux 1:fb4494783863 160
michaeljkoster 13:41098c907200 161 static ESP8266 * getInstance() {
samux 1:fb4494783863 162 return inst;
samux 1:fb4494783863 163 };
samux 1:fb4494783863 164
samux 1:fb4494783863 165 protected:
samux 1:fb4494783863 166 Serial wifi;
samux 1:fb4494783863 167 DigitalOut reset_pin;
samux 1:fb4494783863 168 char phrase[30];
samux 1:fb4494783863 169 char ssid[30];
michaeljkoster 14:4d1128f72e00 170 char ipString[20];
michaeljkoster 13:41098c907200 171 CircBuffer<char> buf_ESP8266;
samux 1:fb4494783863 172
michaeljkoster 13:41098c907200 173 static ESP8266 * inst;
samux 1:fb4494783863 174
samux 1:fb4494783863 175 void attach_rx(bool null);
samux 1:fb4494783863 176 void handler_rx(void);
samux 1:fb4494783863 177
samux 1:fb4494783863 178
samux 1:fb4494783863 179 typedef struct STATE {
samux 1:fb4494783863 180 bool associated;
samux 1:fb4494783863 181 } State;
samux 1:fb4494783863 182
samux 1:fb4494783863 183 State state;
samux 1:fb4494783863 184 };
samux 1:fb4494783863 185
samux 1:fb4494783863 186 #endif