初始化提交

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/**
* @file ESP8266.h
* @brief The definition of class ESP8266.
* @author Wu Pengfei<pengfei.wu@itead.cc>
* @date 2015.02
*
* @par Copyright:
* Copyright (c) 2015 ITEAD Intelligent Systems Co., Ltd. \n\n
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version. \n\n
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef __ESP8266_H__
#define __ESP8266_H__
#include "Arduino.h"
#define VERSION_18 0X18
#define VERSION_22 0X22
#define DEFAULT_PATTERN 3
/**
* You can modify the macro to choose a different version
*/
#define USER_SEL_VERSION VERSION_22
/**
* Provide an easy-to-use way to manipulate ESP8266.
*/
class ESP8266 {
public:
typedef void (*onData)(uint8_t mux_id, uint32_t len, void* ptr);
/*
* Constuctor.
*
* @param uart - an ponter of Serial object.
* @warning parameter baud depends on the AT firmware. 9600 is an common value.
*/
ESP8266(Stream* uart = &Serial);
Stream* getUart() { return m_puart; }
void setOnData(onData cbk, void* ptr) {
m_onData = cbk;
m_onDataPtr = ptr;
}
void run();
/**
* Verify ESP8266 whether live or not.
*
* Actually, this method will send command "AT" to ESP8266 and waiting for "OK".
*
* @retval true - alive.
* @retval false - dead.
*/
bool kick(void);
/**
* Restart ESP8266 by "AT+RST".
*
* This method will take 3 seconds or more.
*
* @retval true - success.
* @retval false - failure.
*/
bool restart(void);
/**
* Get the version of AT Command Set.
*
* @return the string of version.
*/
String getVersion(void);
/**
* Start function of deep sleep.
*
* @param time - the sleep time.
* @retval true - success.
* @retval false - failure.
* @note the feature requires hardware support.
*/
bool deepSleep(uint32_t time);
/**
* Switch the echo function.
*
* @param mode - 1 start echo -0 stop echo
* @retval true - success.
* @retval false - failure.
*
*/
bool setEcho(uint8_t mode);
/**
* Restore factory.
* @retval true - success.
* @retval false - failure.
* @note The operation can lead to restart the machine.
*/
bool restore(void);
/**
* Set up a serial port configuration.
*
* @param pattern -1 send "AT+UART=", -2 send "AT+UART_CUR=", -3 send "AT+UART_DEF=".
* @param baudrate - the uart baudrate.
* @retval true - success.
* @retval false - failure.
* @note Only allows baud rate design, for the other parameters:databits- 8,stopbits -1,parity -0,flow control -0 .
*/
bool setUart(uint32_t baudrate,uint8_t pattern);
/**
* Set operation mode to station.
*
* @param pattern1 -1, send "AT+CWMODE_DEF?",-2,send "AT+CWMODE_CUR?",-3,send "AT+CWMODE?".
* @param pattern2 -1, send "AT+CWMODE_DEF=",-2,send "AT+CWMODE_CUR=",-3,send "AT+CWMODE=".
* @retval true - success.
* @retval false - failure.
*
*/
bool setOprToStation(uint8_t pattern1=DEFAULT_PATTERN,uint8_t pattern2=DEFAULT_PATTERN);
/**
* Get the model values list.
*
* @return the list of model.
*/
String getWifiModeList(void);
/**
* Set operation mode to softap.
* @param pattern1 -1, send "AT+CWMODE_DEF?",-2,send "AT+CWMODE_CUR?",-3,send "AT+CWMODE?".
* @param pattern2 -1, send "AT+CWMODE_DEF=",-2,send "AT+CWMODE_CUR=",-3,send "AT+CWMODE=".
*
* @retval true - success.
* @retval false - failure.
*/
bool setOprToSoftAP(uint8_t pattern1=DEFAULT_PATTERN,uint8_t pattern2=DEFAULT_PATTERN);
/**
* Set operation mode to station + softap.
* @param pattern1 -1, send "AT+CWMODE_DEF?",-2,send "AT+CWMODE_CUR?",-3,send "AT+CWMODE?".
* @param pattern2 -1, send "AT+CWMODE_DEF=",-2,send "AT+CWMODE_CUR=",-3,send "AT+CWMODE=".
*
* @retval true - success.
* @retval false - failure.
*/
bool setOprToStationSoftAP(uint8_t pattern1=DEFAULT_PATTERN,uint8_t pattern2=DEFAULT_PATTERN);
/**
* Get the operation mode.
* @param pattern1 -1, send "AT+CWMODE_DEF?",-2,send "AT+CWMODE_CUR?",-3,send "AT+CWMODE?".
*
* @retval 0 - failure.
* @retval 1 - mode Station.
* @retval 2 - mode AP.
* @retval 3 - mode AP + station.
*/
uint8_t getOprMode(uint8_t pattern1=DEFAULT_PATTERN);
/**
* Search available AP list and return it.
*
* @return the list of available APs.
* @note This method will occupy a lot of memeory(hundreds of Bytes to a couple of KBytes).
* Do not call this method unless you must and ensure that your board has enough memery left.
*/
String getAPList(void);
/**
* Search and returns the current connect AP.
*
* @param pattern -1, send "AT+CWJAP_DEF?",-2,send "AT+CWJAP_CUR?",-3,send "AT+CWJAP?".
* @return the ssid of AP connected now.
*/
String getNowConecAp(uint8_t pattern=DEFAULT_PATTERN);
/**
* Join in AP.
*
* @param pattern -1 send "AT+CWJAP_DEF=" -2 send "AT+CWJAP_CUR=" -3 send "AT+CWJAP=".
* @param ssid - SSID of AP to join in.
* @param pwd - Password of AP to join in.
* @retval true - success.
* @retval false - failure.
* @note This method will take a couple of seconds.
*/
bool joinAP(String ssid, String pwd,uint8_t pattern=DEFAULT_PATTERN);
/**
* Leave AP joined before.
*
* @retval true - success.
* @retval false - failure.
*/
bool leaveAP(void);
/**
* Set SoftAP parameters.
*
* @param pattern -1 send "AT+CWSAP_DEF=" -2 send "AT+CWSAP_CUR=" -3 send "AT+CWSAP=".
* @param ssid - SSID of SoftAP.
* @param pwd - PASSWORD of SoftAP.
* @param chl - the channel (1 - 13, default: 7).
* @param ecn - the way of encrypstion (0 - OPEN, 1 - WEP,
* 2 - WPA_PSK, 3 - WPA2_PSK, 4 - WPA_WPA2_PSK, default: 4).
* @retval true - success.
* @retval false - failure.
* @note This method should not be called when station mode.
*/
bool setSoftAPParam(String ssid, String pwd, uint8_t chl = 7, uint8_t ecn = 4,uint8_t pattern=DEFAULT_PATTERN);
/**
* get SoftAP parameters.
*
* @param pattern -1 send "AT+CWSAP_DEF?" -2 send "AT+CWSAP_CUR?" -3 send "AT+CWSAP?".
* @note This method should not be called when station mode.
*/
String getSoftAPParam(uint8_t pattern=DEFAULT_PATTERN);
/**
* Get the IP list of devices connected to SoftAP.
*
* @return the list of IP.
* @note This method should not be called when station mode.
*/
String getJoinedDeviceIP(void);
/**
* Get the current state of DHCP.
*
* @param pattern -1 send "AT+CWDHCP_DEF?" -2 send "AT+CWDHCP_CUR?" -3 send "AT+CWDHCP?".
* @return the state of DHCP.
*
*/
String getDHCP(uint8_t pattern=DEFAULT_PATTERN);
/**
* Set the state of DHCP.
* @param pattern -1 send "AT+CWDHCP_DEF=" -2 send "AT+CWDHCP_CUR=" -3 send "AT+CWDHCP=".
* @param mode - set ap or set station or set ap + station.
* @param en - 0 disable DHCP - 1 enable DHCP.
* @retval true - success.
* @retval false - failure.
*/
bool setDHCP(uint8_t mode, uint8_t en, uint8_t pattern=DEFAULT_PATTERN);
/**
* make boot automatically connected.
* @param en -1 enable -0 disable.
* @retval true - success.
* @retval false - failure.
*/
bool setAutoConnect(uint8_t en);
/**
* Get the station's MAC address.
* @param pattern -1 send "AT+CIPSTAMAC_DEF?=" -2 send "AT+CIPSTAMAC_CUR?" -3 send "AT+CIPSTAMAC?".
* @return mac address.
* @note This method should not be called when ap mode.
*/
String getStationMac(uint8_t pattern=DEFAULT_PATTERN);
/**
* Set the station's MAC address.
* @param pattern -1 send "AT+CIPSTAMAC_DEF=" -2 send "AT+CIPSTAMAC_CUR=" -3 send "AT+CIPSTAMAC=".
* @param mac - the mac address of station.
* @retval true - success.
* @retval false - failure.
*/
bool setStationMac(String mac,uint8_t pattern=DEFAULT_PATTERN);
/**
* Get the station's IP.
* @param pattern -1 send "AT+CIPSTA_DEF?" -2 send "AT+CIPSTA_CUR?" -3 send "AT+CIPSTA?".
* @return the station's IP.
* @note This method should not be called when ap mode.
*/
String getStationIp(uint8_t pattern=DEFAULT_PATTERN);
/**
* Set the station's IP.
* @param pattern -1 send "AT+CIPSTA_DEF=" -2 send "AT+CIPSTA_CUR=" -3 send "AT+CIPSTA=".
* @param ip - the ip of station.
* @param gateway -the gateway of station.
* @param netmask -the netmask of station.
* @retval true - success.
* @retval false - failure.
* @note This method should not be called when ap mode.
*/
bool setStationIp(String ip,String gateway,String netmask,uint8_t pattern=DEFAULT_PATTERN);
/**
* Get the AP's IP.
* @param pattern -1 send "AT+CIPAP_DEF?" -2 send "AT+CIPAP_CUR?" -3 send "AT+CIPAP?".
* @return ap's ip.
* @note This method should not be called when station mode.
*
*/
String getAPIp(uint8_t pattern=DEFAULT_PATTERN);
/**
* Set the AP IP.
* @param pattern -1 send "AT+CIPAP_DEF=" -2 send "AT+CIPAP_CUR=" -3 send "AT+CIPAP=".
* @param ip - the ip of AP.
* @retval true - success.
* @retval false - failure.
* @note This method should not be called when station mode.
*/
bool setAPIp(String ip,uint8_t pattern=DEFAULT_PATTERN);
/**
* start smartconfig.
* @param type -1:ESP_TOUCH -2:AirKiss.
* @retval true - success.
* @retval false - failure.
*/
bool startSmartConfig(uint8_t type);
/**
* stop smartconfig.
*
* @retval true - success.
* @retval false - failure.
*/
bool stopSmartConfig(void);
/**
* Get the current status of connection(UDP and TCP).
*
* @return the status.
*/
String getIPStatus(void);
/**
* Get the IP address of ESP8266.
*
* @return the IP list.
*/
String getLocalIP(void);
/**
* Enable IP MUX(multiple connection mode).
*
* In multiple connection mode, a couple of TCP and UDP communication can be builded.
* They can be distinguished by the identifier of TCP or UDP named mux_id.
*
* @retval true - success.
* @retval false - failure.
*/
bool enableMUX(void);
/**
* Disable IP MUX(single connection mode).
*
* In single connection mode, only one TCP or UDP communication can be builded.
*
* @retval true - success.
* @retval false - failure.
*/
bool disableMUX(void);
/**
* Create TCP connection in single mode.
*
* @param addr - the IP or domain name of the target host.
* @param port - the port number of the target host.
* @retval true - success.
* @retval false - failure.
*/
bool createTCP(String addr, uint32_t port);
/**
* Release TCP connection in single mode.
*
* @retval true - success.
* @retval false - failure.
*/
bool releaseTCP(void);
/**
* Register UDP port number in single mode.
*
* @param addr - the IP or domain name of the target host.
* @param port - the port number of the target host.
* @retval true - success.
* @retval false - failure.
*/
bool registerUDP(String addr, uint32_t port);
/**
* Unregister UDP port number in single mode.
*
* @retval true - success.
* @retval false - failure.
*/
bool unregisterUDP(void);
/**
* Create TCP connection in multiple mode.
*
* @param mux_id - the identifier of this TCP(available value: 0 - 4).
* @param addr - the IP or domain name of the target host.
* @param port - the port number of the target host.
* @retval true - success.
* @retval false - failure.
*/
bool createTCP(uint8_t mux_id, String addr, uint32_t port);
/**
* Release TCP connection in multiple mode.
*
* @param mux_id - the identifier of this TCP(available value: 0 - 4).
* @retval true - success.
* @retval false - failure.
*/
bool releaseTCP(uint8_t mux_id);
/**
* Register UDP port number in multiple mode.
*
* @param mux_id - the identifier of this TCP(available value: 0 - 4).
* @param addr - the IP or domain name of the target host.
* @param port - the port number of the target host.
* @retval true - success.
* @retval false - failure.
*/
bool registerUDP(uint8_t mux_id, String addr, uint32_t port);
/**
* Unregister UDP port number in multiple mode.
*
* @param mux_id - the identifier of this TCP(available value: 0 - 4).
* @retval true - success.
* @retval false - failure.
*/
bool unregisterUDP(uint8_t mux_id);
/**
* Set the timeout of TCP Server.
*
* @param timeout - the duration for timeout by second(0 ~ 28800, default:180).
* @retval true - success.
* @retval false - failure.
*/
bool setTCPServerTimeout(uint32_t timeout = 180);
/**
* Start TCP Server(Only in multiple mode).
*
* After started, user should call method: getIPStatus to know the status of TCP connections.
* The methods of receiving data can be called for user's any purpose. After communication,
* release the TCP connection is needed by calling method: releaseTCP with mux_id.
*
* @param port - the port number to listen(default: 333).
* @retval true - success.
* @retval false - failure.
*
* @see String getIPStatus(void);
* @see uint32_t recv(uint8_t *coming_mux_id, uint8_t *buffer, uint32_t len, uint32_t timeout);
* @see bool releaseTCP(uint8_t mux_id);
*/
bool startTCPServer(uint32_t port = 333);
/**
* Stop TCP Server(Only in multiple mode).
*
* @retval true - success.
* @retval false - failure.
*/
bool stopTCPServer(void);
/**
*Set the module transfer mode
*
* @retval true - success.
* @retval false - failure.
*/
bool setCIPMODE(uint8_t mode);
/**
* Start Server(Only in multiple mode).
*
* @param port - the port number to listen(default: 333).
* @retval true - success.
* @retval false - failure.
*
* @see String getIPStatus(void);
* @see uint32_t recv(uint8_t *coming_mux_id, uint8_t *buffer, uint32_t len, uint32_t timeout);
*/
bool startServer(uint32_t port = 333);
/**
* Stop Server(Only in multiple mode).
*
* @retval true - success.
* @retval false - failure.
*/
bool stopServer(void);
/**
* Save the passthrough links
*
* @retval true - success.
* @retval false - failure.
*/
bool saveTransLink (uint8_t mode,String ip,uint32_t port);
/**
* PING COMMAND.
*
* @retval true - success.
* @retval false - failure.
*/
bool setPing(String ip);
/**
* Send data based on TCP or UDP builded already in single mode.
*
* @param buffer - the buffer of data to send.
* @param len - the length of data to send.
* @retval true - success.
* @retval false - failure.
*/
bool send(const uint8_t *buffer, uint32_t len);
/**
* Send data based on one of TCP or UDP builded already in multiple mode.
*
* @param mux_id - the identifier of this TCP(available value: 0 - 4).
* @param buffer - the buffer of data to send.
* @param len - the length of data to send.
* @retval true - success.
* @retval false - failure.
*/
bool send(uint8_t mux_id, const uint8_t *buffer, uint32_t len);
/**
* Send data based on TCP or UDP builded already in single mode.
*
* @param buffer - the buffer of data to send from flash memeory.
* @param len - the length of data to send.
* @retval true - success.
* @retval false - failure.
*/
bool sendFromFlash(const uint8_t *buffer, uint32_t len);
/**
* Send data based on one of TCP or UDP builded already in multiple mode.
*
* @param mux_id - the identifier of this TCP(available value: 0 - 4).
* @param buffer - the buffer of data to send from flash memeory.
* @param len - the length of data to send.
* @retval true - success.
* @retval false - failure.
*/
bool sendFromFlash(uint8_t mux_id, const uint8_t *buffer, uint32_t len);
private:
/*
* Empty the buffer or UART RX.
*/
void rx_empty(void);
/*
* Recvive data from uart. Return all received data if target found or timeout.
*/
String recvString(String target, uint32_t timeout = 1000);
/*
* Recvive data from uart. Return all received data if one of target1 and target2 found or timeout.
*/
String recvString(String target1, String target2, uint32_t timeout = 1000);
/*
* Recvive data from uart. Return all received data if one of target1, target2 and target3 found or timeout.
*/
String recvString(String target1, String target2, String target3, uint32_t timeout = 1000);
/*
* Recvive data from uart and search first target. Return true if target found, false for timeout.
*/
bool recvFind(String target, uint32_t timeout = 1000);
/*
* Recvive data from uart and search first target and cut out the substring between begin and end(excluding begin and end self).
* Return true if target found, false for timeout.
*/
bool recvFindAndFilter(String target, String begin, String end, String &data, uint32_t timeout = 1000);
/*
* Receive a package from uart.
*
* @param buffer - the buffer storing data.
* @param buffer_size - guess what!
* @param data_len - the length of data actually received(maybe more than buffer_size, the remained data will be abandoned).
* @param timeout - the duration waitting data comming.
* @param coming_mux_id - in single connection mode, should be NULL and not NULL in multiple.
*/
uint32_t checkIPD(String& data);
bool eAT(void);
bool eATRST(void);
bool eATGMR(String &version);
bool eATGSLP(uint32_t time);
bool eATE(uint8_t mode);
bool eATRESTORE(void);
bool eATSETUART(uint32_t baudrate,uint8_t pattern);
bool qATCWMODE(uint8_t *mode,uint8_t pattern=3);
bool eATCWMODE(String &list) ;
bool sATCWMODE(uint8_t mode,uint8_t pattern=3);
bool qATCWJAP(String &ssid,uint8_t pattern=3) ;
bool sATCWJAP(String ssid, String pwd,uint8_t pattern=3);
bool eATCWLAP(String &list);
bool eATCWQAP(void);
bool qATCWSAP(String &List,uint8_t pattern=3);
bool sATCWSAP(String ssid, String pwd, uint8_t chl, uint8_t ecn,uint8_t pattern=3);
bool eATCWLIF(String &list);
bool qATCWDHCP(String &List,uint8_t pattern=3);
bool sATCWDHCP(uint8_t mode, uint8_t en, uint8_t pattern=3);
bool eATCWAUTOCONN(uint8_t en);
bool qATCIPSTAMAC(String &mac,uint8_t pattern=3);
bool eATCIPSTAMAC(String mac,uint8_t pattern=3);
bool qATCIPSTAIP(String &ip,uint8_t pattern=3);
bool eATCIPSTAIP(String ip,String gateway,String netmask,uint8_t pattern=3);
bool qATCIPAP(String &ip,uint8_t pattern=3);
bool eATCIPAP(String ip,uint8_t pattern=3);
bool eCWSTARTSMART(uint8_t type);
bool eCWSTOPSMART(void);
bool eATCIPSTATUS(String &list);
bool sATCIPSTARTSingle(String type, String addr, uint32_t port);
bool sATCIPSTARTMultiple(uint8_t mux_id, String type, String addr, uint32_t port);
bool sATCIPSENDSingle(const uint8_t *buffer, uint32_t len);
bool sATCIPSENDMultiple(uint8_t mux_id, const uint8_t *buffer, uint32_t len);
bool sATCIPSENDSingleFromFlash(const uint8_t *buffer, uint32_t len);
bool sATCIPSENDMultipleFromFlash(uint8_t mux_id, const uint8_t *buffer, uint32_t len);
bool sATCIPCLOSEMulitple(uint8_t mux_id);
bool eATCIPCLOSESingle(void);
bool eATCIFSR(String &list);
bool sATCIPMUX(uint8_t mode);
bool sATCIPSERVER(uint8_t mode, uint32_t port = 333);
bool sATCIPMODE(uint8_t mode);
bool eATSAVETRANSLINK(uint8_t mode,String ip,uint32_t port);
bool eATPING(String ip);
bool sATCIPSTO(uint32_t timeout);
/*
* +IPD,len:data
* +IPD,id,len:data
*/
Stream *m_puart; /* The UART to communicate with ESP8266 */
onData m_onData;
void* m_onDataPtr;
};
#endif /* #ifndef __ESP8266_H__ */

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@mainpage
# WeeESP8266
An ESP8266 library for Arduino providing an easy-to-use way to manipulate ESP8266.
# Source
Source can be download at <https://github.com/itead/ITEADLIB_Arduino_WeeESP8266>.
You can clone it by:
git clone https://github.com/itead/ITEADLIB_Arduino_WeeESP8266.git
# Documentation
Online API documentation can be reached at <http://docs.iteadstudio.com/ITEADLIB_Arduino_WeeESP8266/index.html>.
Offline API documentation can be found under directory
[doc](https://github.com/itead/ITEADLIB_Arduino_WeeESP8266/tree/master/doc).
# How to get started
On the home page of API documentation, the tabs of Examples, Classes and Modules
will be useful for Arduino lovers.
# API List
bool kick (void) : Verify ESP8266 whether live or not.
bool restart (void) : Restart ESP8266 by "AT+RST".
String getVersion (void) : Get the version of AT Command Set.
bool setOprToStation (void) : Set operation mode to staion.
bool setOprToSoftAP (void) : Set operation mode to softap.
bool setOprToStationSoftAP (void) : Set operation mode to station + softap.
uint8_t getOprMode(void) : Get the operation mode.
String getAPList (void) : Search available AP list and return it.
bool joinAP (String ssid, String pwd) : Join in AP.
bool leaveAP (void) : Leave AP joined before.
bool setSoftAPParam (String ssid, String pwd, uint8_t chl=7, uint8_t ecn=4) : Set SoftAP parameters.
String getJoinedDeviceIP (void) : Get the IP list of devices connected to SoftAP.
String getIPStatus (void) : Get the current status of connection(UDP and TCP).
String getLocalIP (void) : Get the IP address of ESP8266.
bool enableMUX (void) : Enable IP MUX(multiple connection mode).
bool disableMUX (void) : Disable IP MUX(single connection mode).
bool createTCP (String addr, uint32_t port) : Create TCP connection in single mode.
bool releaseTCP (void) : Release TCP connection in single mode.
bool registerUDP (String addr, uint32_t port) : Register UDP port number in single mode.
bool unregisterUDP (void) : Unregister UDP port number in single mode.
bool createTCP (uint8_t mux_id, String addr, uint32_t port) : Create TCP connection in multiple mode.
bool releaseTCP (uint8_t mux_id) : Release TCP connection in multiple mode.
bool registerUDP (uint8_t mux_id, String addr, uint32_t port) : Register UDP port number in multiple mode.
bool unregisterUDP (uint8_t mux_id) : Unregister UDP port number in multiple mode.
bool setTCPServerTimeout (uint32_t timeout=180) : Set the timeout of TCP Server.
bool startServer (uint32_t port=333) Start Server(Only in multiple mode).
bool stopServer (void) : Stop Server(Only in multiple mode).
bool startTCPServer (uint32_t port=333) : Start TCP Server(Only in multiple mode).
bool stopTCPServer (void) : Stop TCP Server(Only in multiple mode).
bool send (const uint8_t *buffer, uint32_t len) : Send data based on TCP or UDP builded already in single mode.
bool send (uint8_t mux_id, const uint8_t *buffer, uint32_t len) : Send data based on one of TCP or UDP builded already in multiple mode.
bool sendFromFlash (const uint8_t *buffer, uint32_t len) : Send data based on TCP or UDP builded already in single mode.
bool sendFromFlash (uint8_t mux_id, const uint8_t *buffer, uint32_t len) : Send data based on one of TCP or UDP builded already in multiple mode.
uint32_t recv (uint8_t *buffer, uint32_t buffer_size, uint32_t timeout=1000) : Receive data from TCP or UDP builded already in single mode.
uint32_t recv (uint8_t mux_id, uint8_t *buffer, uint32_t buffer_size, uint32_t timeout=1000) : Receive data from one of TCP or UDP builded already in multiple mode.
uint32_t recv (uint8_t *coming_mux_id, uint8_t *buffer, uint32_t buffer_size, uint32_t timeout=1000) : Receive data from all of TCP or UDP builded already in multiple mode.
# Mainboard Requires
- RAM: not less than 2KBytes
- Serial: one serial (HardwareSerial or SoftwareSerial) at least
# Suppported Mainboards
- Arduino UNO and its derivatives
- Arduino MEGA and its derivatives
- [Iteaduino UNO](http://imall.iteadstudio.com/im130312001.html)
- [WBoard Pro](http://imall.iteadstudio.com/im141125005.html)
# Select the version of ESP8266 AT Firmware
At present, this library supports ESP8266 AT 0.18 version and 0.22 version. You
can select one of them to fit your module by modifing this line in `ESP8266.h`:
#define USER_SEL_VERSION VERSION_18
If you want to select 0.22 version, it should be like below after modification:
#define USER_SEL_VERSION VERSION_22
# Using SoftwareSerial
If you want to use SoftwareSerial to communicate with ESP8266, you need to modify
the line in file `ESP8266.h`:
//#define ESP8266_USE_SOFTWARE_SERIAL
After modification, it should be:
#define ESP8266_USE_SOFTWARE_SERIAL
# Hardware Connection
WeeESP8266 library only needs an uart for hardware connection. All communications
are done via uart. In each example, you must specify the uart used by mainboard
to communicate with ESP8266 flashed AT firmware.
## MEGA and WBoard Pro
For MEGA and WBoard Pro, `Serial1` will be used if you create an object (named wifi)
of class ESP8266 in your code like this:
#include "ESP8266.h"
ESP8266 wifi(Serial1);
The connection should be like these:
ESP8266_TX->RX1(D19)
ESP8266_RX->TX1(D18)
ESP8266_CH_PD->3.3V
ESP8266_VCC->3.3V
ESP8266_GND->GND
## UNO
To use SoftwareSerial, `mySerial` will be used if you create an object (named wifi)
of class ESP8266 in your code like this:
#include "ESP8266.h"
#include <SoftwareSerial.h>
SoftwareSerial mySerial(3, 2); /* RX:D3, TX:D2 */
ESP8266 wifi(mySerial);
The connection should be like these:
ESP8266_TX->RX(D3)
ESP8266_RX->TX(D2)
ESP8266_CH_PD->3.3V
ESP8266_VCC->3.3V
ESP8266_GND->GND
# Attention
The size of data from ESP8266 is too big for arduino sometimes, so the library can't
receive the whole buffer because the size of the hardware serial buffer which is
defined in HardwareSerial.h is too small.
Open the file from `\arduino\hardware\arduino\avr\cores\arduino\HardwareSerial.h`.
See the follow line in the HardwareSerial.h file.
#define SERIAL_BUFFER_SIZE 64
The default size of the buffer is 64. Change it into a bigger number, like 256 or more.
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# The End!
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# Data types (KEYWORD1)
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EspSerial KEYWORD3