WiFiClient Class
WiFiClient Class
Description
A class of WiFi Client implementation for Ameba.
Syntax
class WiFiClient
Members
| Public Constructors | |
| WiFiClient::WiFiClient | Constructs a WiFiClient instance that connects to the specified IP address and port. |
| Public Methods | |
| WiFiClient::connect | Connect to the IP address and port. |
| WiFiClient::write | Write data (single byte) to the server. |
| WiFiClient::available | Get the number of bytes available for reading. |
| WiFiClient::read | Read the incoming byte from the server. |
| WiFiClient::recv | Read the received byte from the server that the client is connected to. |
| WiFiClient::peek | Get the next byte from the current packet without moving on to the next byte. |
| WiFiClient::flush | Clear all the bytes that have been written to the client but not yet read. |
| WiFiClient::stop | Disconnect from the server. |
| WiFiClient::connected | Check if client is connected. |
| WiFiClient::setRecvTimeout | Set the amount of time the client will wait for new data to arrive each time WiFiClient::read() is called. |
WiFiClient::WiFiClient
Description
Constructs a WiFiClient instance that connects to a specified IP address and port.
Syntax
WiFiClient(void);
WiFiClient(uint8_t sock);
Parameters
sock: socket state.
Returns
NA
Example Code
Example: WiFiWebClient
(https://github.com/ambiot/ambd_arduino/blob/dev/Arduino_package/hardware/libraries/WiFi/examples/WiFiWebClient/WiFiWebClient.ino)
Notes and Warnings
“WiFiClient.h” must be included to use the class function.
WiFiClient::connect
Description
Connect to the IP address and port.
Syntax
int connect(const char *host, uint16_t port);
int connect(IPAddress ip, uint16_t port);
Parameters
ip: IP address that the client will connect to
host: Host name that the client will connect to
port: the port that the client will connect to
Returns
This function returns “1” if the connection is successful, else returns “0”.
Example Code
Example: WiFiWebClient
(https://github.com/ambiot/ambd_arduino/blob/dev/Arduino_package/hardware/libraries/WiFi/examples/WiFiWebClient/WiFiWebClient.ino)
Notes and Warnings
“WiFiClient.h” must be included to use the class function.
WiFiClient::write
Description
Write data (single byte) to the server that the client is connected to.
Syntax
size_t write(uint8_t b);
size_t write(const uint8_t *buf, size_t size);
Parameters
b: the byte or char to write.
buf: a pointer to an array containing the outgoing message.
size: the size of the buffer.
Returns
This function returns the byte/ character that will be written to the server or the size of the buffer.
Example Code
NA
Notes and Warnings
“WiFiClient.h” must be included to use the class function.
WiFiClient::available
Description
Get the number of bytes available for reading.
Syntax
int available(void);
Parameters
NA
Returns
This function returns 1 and number of bytes available for reading if there are available data, else returns 0.
Example Code
Example: WiFiWebClient
(https://github.com/ambiot/ambd_arduino/blob/dev/Arduino_package/hardware/libraries/WiFi/examples/WiFiWebClient/WiFiWebClient.ino)
Notes and Warnings
“WiFiClient.h” must be included to use the class function.
WiFiClient::read
Description
Read the incoming byte from the server that the client is connected to.
Syntax
int read(void);
int read(uint8_t *buf, size_t size);
int read(char *buf, size_t size);
Parameters
buf: buffer to hold incoming byte.
size: maximum size of the buffer.
Returns
This function returns the size of the buffer or returns -1 if no buffer is available.
Example Code
Example: WiFiWebClient
(https://github.com/ambiot/ambd_arduino/blob/dev/Arduino_package/hardware/libraries/WiFi/examples/WiFiWebClient/WiFiWebClient.ino)
Notes and Warnings
“WiFiClient.h” must be included to use the class function.
WiFiClient::recv
Description
Read the received byte from the server that the client is connected to.
Syntax
int recv(uint8_t* buf, size_t size);
Parameters
buf: buffer to hold received byte.
size: maximum size of the buffer.
Returns
This function returns 1 and number of bytes received or returns –1 if no data is available.
Example Code
Example: WiFiWebClient
(https://github.com/ambiot/ambd_arduino/blob/dev/Arduino_package/hardware/libraries/WiFi/examples/WiFiWebClient/WiFiWebClient.ino)
Notes and Warnings
“WiFiClient.h” must be included to use the class function.
WiFiClient::peek
Description
Get the next byte from the current packet without moving on to the next byte.
Syntax
int peek(void);
Parameters
NA
Returns
This function returns the next byte or character, else returns -1 if none is available.
Example Code
NA
Notes and Warnings
“WiFiClient.h” must be included to use the class function.
WiFiClient::flush
Description
Clear all the bytes that have been written to the client but not yet read.
Syntax
void flush(void);
Parameters
NA
Returns
NA
Example Code
NA
Notes and Warnings
“WiFiClient.h” must be included to use the class function.
WiFiClient::stop
Description
Disconnect from the server.
Syntax
void stop(void);
Parameters
NA
Returns
NA
Example Code
Example: WiFiWebClient
(https://github.com/ambiot/ambd_arduino/blob/dev/Arduino_package/hardware/libraries/WiFi/examples/WiFiWebClient/WiFiWebClient.ino)
Notes and Warnings
“WiFiClient.h” must be included to use the class function.
WiFiClient::connected
Description
Check if client is connected.
Syntax
virtual uint8_t connected(void);
Parameters
NA
Returns
This function returns “1” if connected, returns “0” if not connected.
Example Code
Example: WiFiWebClient
(https://github.com/ambiot/ambd_arduino/blob/dev/Arduino_package/hardware/libraries/WiFi/examples/WiFiWebClient/WiFiWebClient.ino)
Notes and Warnings
“WiFiClient.h” must be included to use the class function.
WiFiClient::setRecvTimeout
Description
Set the amount of time the client will wait for new data to arrive each time WiFiClient::read() is called.
Syntax
int setRecvTimeout(int timeout);
Parameters
timeout: timeout in seconds.
Returns
This function returns “0” if client is not connected.
Example Code
NA
Notes and Warnings
“WiFiClient.h” must be included to use the class function.
