[Ethernet]
描述
Writes UDP data to the remote connection. Must be wrapped between beginPacket() 以及 endPacket(). beginPacket() initializes the packet of data, it is not sent until endPacket() is called. (Remarks: the maximum size of the packet is 512-byte in 86Duino, in contrast with 24-byte in Arduino.)
語法
// An EthernetUDP instance to let us send and receive packets over UDP EthernetUDP Udp; Udp.write(message); Udp.write(buffer, size);
參數
message: the outgoing message (char)buffer: an array to send as a series of bytes (byte or char)size: the length of the buffer
回傳
byte: returns the number of characters sent. This does not have to be read
範例
#include <Ethernet.h>
#include <EthernetUdp.h>
// Enter an IP address for your controller below.
// The IP address will be dependent on your local network:
IPAddress ip(192, 168, 1, 177);
unsigned int localPort = 8888; // local port to listen on
// An EthernetUDP instance to let us send and receive packets over UDP
EthernetUDP Udp;
void setup() {
// start the Ethernet and UDP:
Ethernet.begin(NULL,ip);
Udp.begin(localPort);
}
void loop() {
Udp.beginPacket(Udp.remoteIP(), Udp.remotePort());
Udp.write("hello");
Udp.endPacket();
}函式庫參考主頁面
86Duino 參考的文本是根據 知識共享署名-相同方式分享 3.0 許可證，部分文本是從 Arduino 參考 修改的。 參考中的代碼示例已發佈到公共領域。