NU32: Using the dsPIC33FJ12MC201 QEI to SPI board - Revision history

Lynch at 11:35, 16 January 2016

2016-01-16T11:35:32Z

← Older revision		Revision as of 06:35, 16 January 2016
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			'''THIS PAGE REFERS TO A PRE-RELEASE VERSION OF THE NU32 PIC32 DEVELOPMENT BOARD. FOR INFORMATION, SAMPLE CODE, AND VIDEOS RELATED TO THE PRODUCTION VERSION (2016 AND LATER), AND TO THE CORRESPONDING BOOK "EMBEDDED COMPUTING AND MECHATRONICS WITH THE PIC32 MICROCONTROLLER," VISIT [[NU32\|THE NU32 PAGE]].'''


	Using the dsPIC33FJ12MC201 breakout board for quadrature decoding.		Using the dsPIC33FJ12MC201 breakout board for quadrature decoding.

NickMarchuk: /* Wiring */

2012-03-04T21:56:56Z

Wiring

← Older revision		Revision as of 16:56, 4 March 2012
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	== Wiring ==		== Wiring ==

	[[Image:NU32_dsPIC33FJ12MC201_wireup.png\|thumb\|~~200px~~\|How to connect the dsPIC33FJ12MC201 breakout board to the PIC32\|center]]		[[Image:NU32_dsPIC33FJ12MC201_wireup.png\|thumb\|400px\|How to connect the dsPIC33FJ12MC201 breakout board to the PIC32\|center]]

	== Library Functions ==		== Library Functions ==

NickMarchuk: /* Wiring */

2012-03-03T20:19:38Z

Wiring

← Older revision		Revision as of 15:19, 3 March 2012
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	== Wiring ==		== Wiring ==

	[[Image:~~NU32_dsPIC33FJ12MC201_wire~~.png\|thumb\|200px\|How to connect the dsPIC33FJ12MC201 breakout board to the PIC32\|center]]		[[Image:NU32_dsPIC33FJ12MC201_wireup.png\|thumb\|200px\|How to connect the dsPIC33FJ12MC201 breakout board to the PIC32\|center]]

	== Library Functions ==		== Library Functions ==

NickMarchuk: /* Wiring */

2012-03-01T17:09:52Z

Wiring

← Older revision		Revision as of 12:09, 1 March 2012
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	== Wiring ==		== Wiring ==

	[[Image:NU32_dsPIC33FJ12MC201_wire.~~jpg~~\|thumb\|200px\|How to connect the dsPIC33FJ12MC201 breakout board to the PIC32\|center]]		[[Image:NU32_dsPIC33FJ12MC201_wire.png\|thumb\|200px\|How to connect the dsPIC33FJ12MC201 breakout board to the PIC32\|center]]

	== Library Functions ==		== Library Functions ==

NickMarchuk: /* Details */

2012-03-01T16:33:15Z

Details

← Older revision		Revision as of 11:33, 1 March 2012
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	The breakout board has been pre-programmed to read a quadrature signal on pins RP7 and RP8 (pins 11 and 12). It will keep track of the net motion of the encoder as a 16 bit integer, initializing to 32767. The dsPIC will report the 16 bit unsigned number over SPI communication when a '1' is sent.		The breakout board has been pre-programmed to read a quadrature signal on pins RP7 and RP8 (pins 11 and 12). It will keep track of the net motion of the encoder as a 16 bit integer, initializing to 32767. The dsPIC will report the 16 bit unsigned number over SPI communication when a '1' is sent.

	[[Image:NU32_dsPIC33FJ12MC201_sch.png\|thumb\|~~400px~~\|The dsPIC33FJ12MC201 breakout board schematic\|center]]		[[Image:NU32_dsPIC33FJ12MC201_sch.png\|thumb\|500px\|The dsPIC33FJ12MC201 breakout board schematic\|center]]

	== Wiring ==		== Wiring ==

NickMarchuk: /* Overview */

2012-03-01T16:32:59Z

Overview

← Older revision		Revision as of 11:32, 1 March 2012
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	== Overview ==		== Overview ==

	[[Media:dsPIC33FJ12MC201.pdf\|Datasheet]]		[[Media:dsPIC33FJ12MC201.pdf\|Datasheet]], [http://ww1.microchip.com/downloads/en/devicedoc/93002A.pdf Specifics on the QEI module]

	The dsPIC series of PIC microcontrollers are inexpensive 16 bit microcontrollers, specializing in the ability do fast digital signal processing.		The dsPIC series of PIC microcontrollers are inexpensive 16 bit microcontrollers, specializing in the ability do fast digital signal processing.

NickMarchuk at 16:32, 1 March 2012

2012-03-01T16:32:19Z

← Older revision		Revision as of 11:32, 1 March 2012
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	== Library Functions ==		== Library Functions ==
	[[Media:~~NU32_dsPIC_QEU_example~~.c \| This code]] is an example of how to read the encoder count using the NU32.		[[Media:NU32_dsPIC_QEI_example.c \| This code]] is an example of how to read the encoder count using the NU32.

	The functions are:		The functions are:

NickMarchuk at 16:29, 1 March 2012

2012-03-01T16:29:37Z

← Older revision		Revision as of 11:29, 1 March 2012
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	== Library Functions ==		== Library Functions ==
	[[Media:NU32_dsPIC_QEU_example.~~zip~~ \| This code]] is an example of how to read the encoder count using the NU32.		[[Media:NU32_dsPIC_QEU_example.c \| This code]] is an example of how to read the encoder count using the NU32.

	The functions are:		The functions are:
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	*int getEncoder(void) - sends a '1' to the dsPIC, returns the value returned by the dsPIC		*int getEncoder(void) - sends a '1' to the dsPIC, returns the value returned by the dsPIC

	NU32_dsPIC_Example.c ~~in the .zip file~~ above demonstrates how to use the breakout board.		NU32_dsPIC_Example.c above demonstrates how to use the breakout board.

	== Sample Code ==		== Sample Code ==

NickMarchuk at 16:27, 1 March 2012

2012-03-01T16:27:11Z

← Older revision		Revision as of 11:27, 1 March 2012
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	== Details ==		== Details ==
	The breakout board has been pre-programmed to read a quadrature signal on pins RP7 and RP8 (pins 11 and 12). It will keep track of the net motion of the encoder as a 16 bit integer, initializing to 32767. The dsPIC will report the 16 bit unsigned number over SPI communication when a '1' is sent.		The breakout board has been pre-programmed to read a quadrature signal on pins RP7 and RP8 (pins 11 and 12). It will keep track of the net motion of the encoder as a 16 bit integer, initializing to 32767. The dsPIC will report the 16 bit unsigned number over SPI communication when a '1' is sent.

			[[Image:NU32_dsPIC33FJ12MC201_sch.png\|thumb\|400px\|The dsPIC33FJ12MC201 breakout board schematic\|center]]

			== Wiring ==

			[[Image:NU32_dsPIC33FJ12MC201_wire.jpg\|thumb\|200px\|How to connect the dsPIC33FJ12MC201 breakout board to the PIC32\|center]]

	== Library Functions ==		== Library Functions ==
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	The functions are:		The functions are:
	*void ~~NU32_dsPIC_initialize~~(void) - enables SPI4 as master at 8MHz		*void initEncoderSPI(void) - enables SPI4 as master at 8MHz
	*int ~~NU32_dsPIC_getCount~~(void) - sends a '1' to the dsPIC, returns the value returned by the dsPIC		*int getEncoder(void) - sends a '1' to the dsPIC, returns the value returned by the dsPIC

	NU32_dsPIC_Example.c in the .zip file above demonstrates how to use the breakout board.		NU32_dsPIC_Example.c in the .zip file above demonstrates how to use the breakout board.
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	== Sample Code ==		== Sample Code ==

	To initialize the SPI communication, call ~~NU32_dsPIC_initialize~~(), :		To initialize the SPI communication, call initEncoderSPI(), :

	<pre>		<pre>
			initEncoderSPI();
	NU32_dsPIC_initialize();
	</pre>		</pre>

	To read the encoder count, call ~~NU32_dsPIC_getCount~~(), :		To read the encoder count, call getEncoder(), :

	<pre>		<pre>
	int count = ~~NU32_dsPIC_getCount~~();		int count = getEncoder();
	</pre>		</pre>

NickMarchuk at 16:38, 28 February 2012

2012-02-28T16:38:44Z

← Older revision		Revision as of 11:38, 28 February 2012
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	== Overview ==		== Overview ==

			[[Media:dsPIC33FJ12MC201.pdf\|Datasheet]]

	The dsPIC series of PIC microcontrollers are inexpensive 16 bit microcontrollers, specializing in the ability do fast digital signal processing.		The dsPIC series of PIC microcontrollers are inexpensive 16 bit microcontrollers, specializing in the ability do fast digital signal processing.