Sha256: 9a3c0f79af0b84c549e92b5cda7959cabbeec1540fe19278eeb227ee5671577a
Contents?: true
Size: 1.23 KB
Versions: 8
Compression:
Stored size: 1.23 KB
Contents
# frozen_string_literal: true
module Lxi
class Device
include FFI
attr_accessor :id, :address, :port, :name, :timeout, :protocol
def initialize(address, protocol)
@address = address
@port = 0
@name = nil
@timeout = 1000
@protocol = protocol
@id = -1
connect
yield self if block_given?
end
def connect
Lxi.init_lxi_session
@id = Lxi.lxi_connect(@address, @port, @name, @timeout, @protocol)
raise Error, 'LXI Connection Error' if @id == LXI_ERROR
true
end
alias open connect
def disconnect
Lxi.lxi_disconnect(@id)
end
alias close disconnect
def send(message)
bytes_sent = Lxi.lxi_send(@id, message, message.length, @timeout)
raise Error, 'LXI communications error' unless bytes_sent.positive?
bytes_sent
end
alias scpi send
alias write send
def read(length)
message = FFI::MemoryPointer.new(:char, length)
bytes_received = Lxi.lxi_receive(@id, message, length, @timeout)
raise Error, 'LXI communications error' unless bytes_received.positive?
message.read_string
end
alias gets read
def query(message)
send message
read 10_000
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems