Hi All,
I'm using Node-Red on a BBB and want to do some serial messaging. I am
using a node-red function block calling Octalbonescript (
https://github.com/theoctal/octalbonescript/wiki/Serial-Port) to do a
serial write function this works okay (i.e. sends data out of the serial
port)
*var b = context.global.octalbonescript;*
*b.serial.open('/dev/ttyO2', {baudRate: 115200}, function(data){*
* console.log(data);*
*}, function(err){*
* if(err){*
* console.error(err.message);*
* }*
*});*
*var path='/dev/ttyO2';*
*//msg.payload is passed from the previous block as "hello World"*
*var buffer = msg.payload +'\r';*
*b.serial.write(path, buffer);*
*return msg;*
Now, I want to try and get the serial read working, but I don't fully
understand the operation and wondered if anyone can help (an example would
be tops). The documentation defines the serial.open as:
serial.open(path, options, handler[data], callback[err|null, serialPort])
so I take it that the incoming serial data is passed into the
handler[data]. Do I need to keep calling this function to check for any
data or do I just do it once and it gets handled in the background??
Best regards
Michael
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