lib/arduino_firmata/arduino.rb in arduino_firmata-0.2.9 vs lib/arduino_firmata/arduino.rb in arduino_firmata-0.3.0

@@ -207,23 +207,21 @@
           @wait_for_data -= 1
           @stored_input_data[@wait_for_data] = input_data
           if @execute_multi_byte_command != 0 and @wait_for_data == 0
             case @execute_multi_byte_command
             when DIGITAL_MESSAGE
-              digital_inputs = @digital_input_data.clone
-              @digital_input_data[@multi_byte_channel] = (@stored_input_data[0] << 7) + @stored_input_data[1]
-              0.upto(15).each do |i|
-                current = digital_read i
-                if current != ((digital_inputs[i >> 3] >> (i & 0x07)) & 0x01 > 0)
-                  emit :digital_read, i, current
-                end
+              input_data = (@stored_input_data[0] << 7) + @stored_input_data[1]
+              diff = @digital_input_data[@multi_byte_channel] ^ input_data
+              @digital_input_data[@multi_byte_channel] = input_data
+              0.upto(13).each do |i|
+                next unless (0x01 << i) & diff > 0
+                emit :digital_read, i, (input_data & diff > 0)
               end
             when ANALOG_MESSAGE
               analog_value = (@stored_input_data[0] << 7) + @stored_input_data[1]
-              unless @analog_input_data[@multi_byte_channel] == analog_value
-                emit :analog_read, @multi_byte_channel, analog_value
-              end
+              old = analog_read(@multi_byte_channel)
               @analog_input_data[@multi_byte_channel] = analog_value
+              emit :analog_read, @multi_byte_channel, analog_value if old != analog_value
             when REPORT_VERSION
               @version = "#{@stored_input_data[1]}.#{@stored_input_data[0]}"
             end
           end
         else