Sends characters data to the SigFox’s backend. This data is sent as a character or series of characters; to send the binary data use the write() function instead.
SigFox.print(val)
SigFox.print(str)
SigFox.print(buf, len)
val: a value to send characters representing the value
str: a string to send as a series of characters
buf: an array to send as a series of characters
len: the length of the buffer