Embedded System Tutorial GPIO - Revision history

Sree at 20:02, 25 January 2019

2019-01-25T20:02:33Z

2019-01-25T17:05:14Z

2018-02-07T07:45:21Z

‎Assignment

2018-02-07T07:44:13Z

‎Assignment

2017-03-02T02:44:40Z

‎Assignment

2017-03-02T02:44:21Z

‎Assignment

2017-03-02T02:43:32Z

‎Assignment

2014-02-07T22:12:46Z

2013-12-08T02:52:36Z

‎GPIO

2013-12-08T02:12:54Z

← Older revision		Revision as of 20:02, 25 January 2019
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−	~~Hello world~~	+	Socialledge is moving to two portals.
		+	* The Wiki will remain here for general references about the SJ-One board, and to document student reports.
		+	* The bookstack will now be used for SJSU assignments
		+
		+	[http://books.socialledge.com/books/embedded-drivers-real-time-operating-systems/chapter/lesson-gpio This article has been moved here]

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 == Objective ==
 Interface your LPC17xx to a switch and an LED.
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 [[Embedded System GPIO Assignment]]

← Older revision		Revision as of 07:45, 7 February 2018
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	<b>Extra Credit:</b> Do something creative, such as lighting up an LED based on a terminal command.		<b>Extra Credit:</b> Do something creative, such as lighting up an LED based on a terminal command.

−	[[~~My HTML Wiki~~]]	+	[[Embedded System GPIO Assignment]]

← Older revision		Revision as of 07:44, 7 February 2018
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	<b>Extra Credit:</b> Do something creative, such as lighting up an LED based on a terminal command.		<b>Extra Credit:</b> Do something creative, such as lighting up an LED based on a terminal command.
		+
		+	[[My HTML Wiki]]

← Older revision		Revision as of 02:44, 2 March 2017
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	Upload into the textbox just the relevant code, probably just main.cpp		Upload into the textbox just the relevant code, probably just main.cpp
−	<b>Extra Credit</b> Do something creative, such as lighting up an LED based on a terminal command.	+
		+	<b>Extra Credit:</b> Do something creative, such as lighting up an LED based on a terminal command.

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 == Assignment ==
 At the end of this lab, you should be familiar with how a microcontroller's memory can access physical pins.  Test your knowledge by doing the following:
-*  Interface your board's pin to an external switch
+*  Interface your board's GPIO pin to an external switch
-*  Interface your board's pin to an LED
+*  Interface your board's GPIO pin to an LED
 *  If the switch is pressed, light up an LED
 *  Do not use any pre-existing library such as a GPIO class

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+|
 GPIO stands for "General Purpose Input Output".  Each pin can at least be used as an output or input.  In an output configuration, the pin voltage is either 0v or 3.3v.  In input mode, we can read whether the voltage is 0v or 3.3v.
 |[[File:tutorial_gpio_design.png|center|frame|GPIO Design]]
 |}

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 *  You should know fundamentals of electricity and the famous '''V = IR''' equation.
-== Lecture ==
+== GPIO ==
 === Hardware Registers ===
 The hardware registers map to physical pins.  If we want to attach our switch and the LED to our microcontroller's PORT0, then here are the relevant registers and their functionality :