add ruby/ffi-k8055

1 files changed, 141 insertions, 0 deletions

diff --git a/ruby/ffi-k8055/lib/k8055.rb b/ruby/ffi-k8055/lib/k8055.rb
new file mode 100644
index 0000000..c64a49f
--- /dev/null
+++ b/ruby/ffi-k8055/lib/k8055.rb
@@ -0,0 +1,141 @@
+#! /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, &block; r=Native.#{meth}(@dev,*args); yield r if block_given?; r; end"
+                self.class.class_eval "def #{m} *args, &block; 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