설명
Writes binary data to the serial port. This data is sent as a byte or series of bytes; to send the characters representing the digits of a number use the print() function instead.
문법
Serial.write(val)
Serial.write(str)
Serial.write(buf, len)
Arduino Mega also supports:
Serial1
, Serial2
, Serial3
(in place of Serial
)
매개변수
val
: a value to send as a single byte
str
: a string to send as a series of bytes
buf
: an array to send as a series of bytes
반환
size_t
write()
will return the number of bytes written, though reading that number is optional