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|
#! /usr/bin/env ruby
# -*- coding: UTF-8 -*-
#
require 'ffi'
#
module K8055
#
module Native
class K8055Struct < FFI::Struct
layout :dev_no, :int,
:usb_ctx, :pointer,
:usb_handle, :pointer,
:data_in, :pointer,
:data_out, :pointer
end
#
extend FFI::Library
#
ffi_lib 'k8055'
#
typedef :pointer, :k8055_dev
#
[
[ :k8055_alloc, [], :k8055_dev],
[ :k8055_free, [:k8055_dev], :void],
[ :k8055_read, [:k8055_dev], :int],
[ :k8055_write, [:k8055_dev], :int],
[ :k8055_digital_outputs, [:k8055_dev], :int],
[ :k8055_digital_output_1, [:k8055_dev], :int],
[ :k8055_digital_output_2, [:k8055_dev], :int],
[ :k8055_digital_output_3, [:k8055_dev], :int],
[ :k8055_digital_output_4, [:k8055_dev], :int],
[ :k8055_digital_output_5, [:k8055_dev], :int],
[ :k8055_analog_output_1, [:k8055_dev], :int],
[ :k8055_analog_output_2, [:k8055_dev], :int],
[ :k8055_digital_input_1, [:k8055_dev], :int],
[ :k8055_digital_input_2, [:k8055_dev], :int],
[ :k8055_digital_input_3, [:k8055_dev], :int],
[ :k8055_digital_input_4, [:k8055_dev], :int],
[ :k8055_digital_input_5, [:k8055_dev], :int],
[ :k8055_analog_input_1, [:k8055_dev], :int],
[ :k8055_analog_input_2, [:k8055_dev], :int],
[ :k8055_counter_1, [:k8055_dev], :int],
[ :k8055_counter_2, [:k8055_dev], :int],
[ :k8055_version, [], :string],
[ :k8055_set_debug, [:int], :int],
[ :k8055_get_debug, [], :int],
[ :k8055_search_devices, [], :int],
[ :k8055_open_device, [:k8055_dev,:int], :int],
[ :k8055_close_device, [:k8055_dev], :int],
[ :k8055_set_analog_channel, [:k8055_dev,:int], :int],
[ :k8055_clear_analog_channel, [:k8055_dev,:int], :int],
[ :k8055_read_analog_channel, [:k8055_dev,:int], :int],
[ :k8055_write_analog_channel, [:k8055_dev,:int,:int], :int],
[ :k8055_set_all_analog, [:k8055_dev], :int],
[ :k8055_clear_all_analog, [:k8055_dev], :int],
[ :k8055_read_all_analog, [:k8055_dev,:pointer,:pointer], :int],
[ :k8055_write_all_analog, [:k8055_dev,:int,:int], :int],
[ :k8055_set_digital_channel, [:k8055_dev,:int], :int],
[ :k8055_clear_digital_channel, [:k8055_dev,:int], :int],
[ :k8055_read_digital_channel, [:k8055_dev,:int], :int],
[ :k8055_set_all_digital, [:k8055_dev], :int],
[ :k8055_clear_all_digital, [:k8055_dev], :int],
[ :k8055_read_all_digital, [:k8055_dev], :int],
[ :k8055_write_all_digital, [:k8055_dev,:int], :int],
[ :k8055_write_all_outputs, [:k8055_dev,:int,:int,:int], :int],
[ :k8055_read_all_inputs, [:k8055_dev,:pointer,:pointer,:pointer,:pointer,:pointer], :int],
[ :k8055_reset_counter, [:k8055_dev,:int], :int],
[ :k8055_read_counter, [:k8055_dev,:int], :int]
].each do |func|
begin
attach_function(*func)
rescue Object => e
puts "Could not attach #{func} #{e.message}"
end
end
#
end
#
def self.version
Native.k8055_version
end
#
def self.search_devices
Native.k8055_search_devices
end
#
class K8055
def initialize n=nil
@dev = FFI::AutoPointer.new Native.k8055_alloc, K8055.method(:release)
open n unless n.nil?
end
def self.release p
Native.k8055_free p unless p.nil?
end
def free
Native.k8055_close_device @dev
@dev.autorelease=false if not @dev.nil?
K8055.release @dev
@dev=nil
end
def self.version
Native.k8055_version
end
def k8055_read_all_analog
a1 = FFI::MemoryPointer.new :int
a2 = FFI::MemoryPointer.new :int
Native.k8055_read_all_analog @dev, a1, a2
[ a1.read_int, a2.read_int ]
end
alias :read_all_analog :k8055_read_all_analog
def k8055_read_all_values
a1 = FFI::MemoryPointer.new :int
a2 = FFI::MemoryPointer.new :int
Native.k8055_read_all_analog @dev, a1, a2
[ a1.read_int, a2.read_int ]
end
alias :read_all_values :k8055_read_all_values
def method_missing m, *args, &block
m_s = m.to_s
meth = (
if Native.respond_to? m_s
m_s
elsif Native.respond_to? 'k8055_'+m_s
'k8055_'+m_s
else
nil
end
)
if not meth.nil?
# self.class.class_eval "def #{m} *args, █ r=Native.#{meth}(@dev,*args); yield r if block_given?; r; end"
self.class.class_eval "def #{m} *args, █ Native.#{meth}(@dev,*args); end"
return self.send m, *args, &block
end
Kernel.raise NameError.new "#{self.class.name} is unable to resolve #{m}"
end
end
#
end
#
# EOF
|
