Using Masks - Revision history

ReeceL at 12:31, 5 September 2013

2013-09-05T12:31:24Z

2013-09-05T12:31:15Z

2013-09-05T12:30:04Z

Video instructions

2013-09-05T12:29:53Z

2013-09-05T12:29:19Z

2013-09-05T12:25:44Z

2013-07-29T13:17:08Z

2013-06-18T11:03:00Z

2013-06-18T11:02:37Z

2013-06-12T13:36:32Z

← Older revision		Revision as of 12:31, 5 September 2013
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−	Masks can be used to select specific number of bits on a port to read from, or write to. Masks can be used with Input icons and Output icons.	+	Masks can be used to select specific number of bits on a port to read from, or write to. Masks can be used with both Input icons and Output icons.

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 <sidebar>Sidebar: Taking Flowcode Further</sidebar>
-Before looking at the operation of icons you will need to understand how 'masks' are used within Flowcode. You may wish to come back to this screen once you have looked at how Input and Output icons work.
+Before looking at the operation of icons you will need to understand how 'masks' are used within Flowcode. You may wish to come back to this screen once you have looked at how [[Input Icon Properties|Input]] and [[Output Icon Properties|Output]] icons work.
-Masks can be used to select specific number of bits on a port to read from, or write to. Masks can be used with Input icons and Output Icons.
+Masks can be used to select specific number of bits on a port to read from, or write to. Masks can be used with Input icons and Output icons.

@@ Line 42: / Line 42: @@
 See the [http://www.youtube.com/watch?v=uC3jj1ebAFI&list=PLQDWBb7bxuCgg6aJgPJcfXBMzZdLILceQ&index=15 Inputs Outputs] video for a brief overview and demonstration of masking bits and ports using the [[Input Icon Properties|Input icon]] and [[Output Icon Properties|Output icon]].
-<div align="center>
+<div align="center">
 {{#ev:youtube|uC3jj1ebAFI|640}}
 </div>

← Older revision		Revision as of 12:29, 5 September 2013
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−	===Video instructions==	+	===Video instructions===
	See the [http://www.youtube.com/watch?v=uC3jj1ebAFI&list=PLQDWBb7bxuCgg6aJgPJcfXBMzZdLILceQ&index=15 Inputs Outputs] video for a brief overview and demonstration of masking bits and ports using the [[Input Icon Properties\|Input icon]] and [[Output Icon Properties\|Output icon]].		See the [http://www.youtube.com/watch?v=uC3jj1ebAFI&list=PLQDWBb7bxuCgg6aJgPJcfXBMzZdLILceQ&index=15 Inputs Outputs] video for a brief overview and demonstration of masking bits and ports using the [[Input Icon Properties\|Input icon]] and [[Output Icon Properties\|Output icon]].
		+
		+	<div align="center>
		+	{{#ev:youtube\|uC3jj1ebAFI\|640}}
		+	</div>

← Older revision		Revision as of 12:29, 5 September 2013
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	If SWITCHES is equal to 32 then bits B0 to B2 will be cleared as the corresponding values for the B0 to B2 are all 0.		If SWITCHES is equal to 32 then bits B0 to B2 will be cleared as the corresponding values for the B0 to B2 are all 0.
	Bit B5, which corresponds to the value 32 is not affected as it is not selected.		Bit B5, which corresponds to the value 32 is not affected as it is not selected.
		+
		+
		+	===Video instructions==
		+	See the [http://www.youtube.com/watch?v=uC3jj1ebAFI&list=PLQDWBb7bxuCgg6aJgPJcfXBMzZdLILceQ&index=15 Inputs Outputs] video for a brief overview and demonstration of masking bits and ports using the [[Input Icon Properties\|Input icon]] and [[Output Icon Properties\|Output icon]].

@@ Line 8: / Line 8: @@
 Masks are particularly useful when the same port has both input pins and output pins as they facilitate the control/reading of two or more bits at the same time.
+__NOTOC__
-'''Using masks with Input icons'''
+===Using masks with Input icons===
 Bits selected in a mask allow their corresponding value to be sent to the variable. Non-selected bits return zero
@@ Line 15: / Line 15: @@
 [[File:Gen_Using_Masks_Input.png|center]]
-'''Examples:'''
+====Examples:====
 If all five switches on Port A were pressed with the above mask only the values for A1 and A2 would be passed to the variable SWITCHES giving it the value of 6, rather than the value 31 which the five switches add up to.
@@ Line 23: / Line 23: @@
-'''Using masks with Output icons'''
+===Using masks with Output icons===
 Bits selected in a mask are passed the value of the corresponding bit of the number or variable sent.
@@ Line 30: / Line 30: @@
 [[File:Gen_Using_Masks_Output.png|center]]
-'''Examples:'''
+====Examples:====
 If SWITCHES is equal to 255 and is sent with the mask above then bits B0, B1 and B2 will be affected. The other bits B3 - B7 will not be affected, and will retain whatever Bit value they have before the output message. Bits B0 - B2 will be set as the corresponding bits of SWITCHES are set.

@@ Line 13: / Line 13: @@
 Bits selected in a mask allow their corresponding value to be sent to the variable. Non-selected bits return zero
-[[File:Gen Using Masks Input.png]]
+[[File:Gen_Using_Masks_Input.png]]
 Examples:
@@ Line 27: / Line 27: @@
 Bits that are not selected are not affected and retain their prior value.
-[[File:Gen Using Masks Output.png]]
+[[File:Gen_Using_Masks_Output.png]]
 Examples: