serial communication

[liu]

hi
now i am using VISA in labview to communicate with MCU via serial port.
VISA write uses ASCII code,but i feel some unconvenience to use ASCII code.
can i use binary directly rather than ASCII to write several bytes to
serial port? this means the MCU receives the binary data directly.

[Rolf Østvik]

"liu" wrote in
news:pdKFc.6876$LT3.268952@news.xtra.co.nz:

> hi
> now i am using VISA in labview to communicate with MCU via serial port.
> VISA write uses ASCII code,but i feel some unconvenience to use ASCII
> code.
> can i use binary directly rather than ASCII to write several bytes to
> serial port? this means the MCU receives the binary data directly.

For me the difference of a string (collection of characters) and a U8 byte
array isnt' so big.


In LabVIEW you have the "Byte Array To String" function

Function Palette->String->String/Array/Path Conversion->Byte Array To
String

--
Rolf

[CoastalMaineBird]

VISA write uses ASCII code
--- Not quite correct. VISA WRITE uses a STRING as the data it sends, but you control what is in the string.

The string can be composed of ASCII text, or binary data, anything you like. You can FLATTEN any structure you want to a string. You can convert an array of bytes to s atring. You can cast anything to a string.

The string can have NULLs in it without problems.