Reading from serial port with while-loop

Question

I’ve written a short program in Go to communicate with a sensor through a serial port:

package main

import (
    \"fmt\"
    \"github.com/tarm/goserial\"
           


        

Answer 1

Your problem is that Read() will return whenever it has some data - it won't wait for all the data. See the io.Reader specification for more info

What you want to do is read until you reach some delimiter. I don't know exactly what format you are trying to use, but it looks like maybe \x0a is the end delimiter.

In which case you would use a bufio.Reader like this

reader := bufio.NewReader(s)
reply, err := reader.ReadBytes('\x0a')
if err != nil {
    panic(err)
}
fmt.Println(reply)

Which will read data until the first \x0a.