FPGAWorkshop17Notes - Revision history

ITechGeek: Undo revision 4144 by Yrewevaca (talk)

2010-11-24T08:27:32Z

Undo revision 4144 by Yrewevaca (talk)

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Yrewevaca at 08:20, 24 November 2010

2010-11-24T08:20:13Z

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ITechGeek: Undo revision 4006 by Yrewevaca (talk)

2010-11-24T06:33:04Z

Undo revision 4006 by Yrewevaca (talk)

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Yrewevaca at 02:42, 24 November 2010

2010-11-24T02:42:36Z

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128.164.156.77: /* constraints.ucf */

2010-03-25T00:20:38Z

constraints.ucf

← Older revision		Revision as of 00:20, 25 March 2010
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	NET "FPGA_RESET" LOC = "L13" \| IOSTANDARD = LVTTL \| PULLUP;		NET "FPGA_RESET" LOC = "L13" \| IOSTANDARD = LVTTL \| PULLUP;
	# sw1		# sw1
	NET "SW1" LOC = L14 \| IOSTANDARD = LVTTL \| PULLUP;		NET "SW1" LOC = "L14" \| IOSTANDARD = LVTTL \| PULLUP;
	</pre>		</pre>

128.164.128.94: /* Picoblaze simple example / toolchain tutorial */

2010-03-09T15:34:52Z

Picoblaze simple example / toolchain tutorial

← Older revision		Revision as of 15:34, 9 March 2010
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	You'll then need to create a new file - use the new file button in the upper left corner, or go to '''File''' -> '''New'''. Copy and paste the 1st example source file from the wiki. Using the '''Picoblaze Menu''' Run a syntax check on the code to make sure it is correct, and then generate a VHDL memory file from the code. Save the file as "prog_rom_example1.vhd" in your assembly section. You can now move back to ISE.		You'll then need to create a new file - use the new file button in the upper left corner, or go to '''File''' -> '''New'''. Copy and paste the 1st example source file from the wiki. Using the '''Picoblaze Menu''' Run a syntax check on the code to make sure it is correct, and then generate a VHDL memory file from the code. Save the file as "prog_rom_example1.vhd" in your assembly section. You can now move back to ISE.

	'''note: the picoblaze assembly files and the openpicide file need to be in the same directory'''		'''note: the picoblaze assembly files and the openpicide project file need to be in the same directory'''

	Now, add the program file "prog_rom_example1.vhd" to your project, using "Add Copy of Source". You'll notice that the prog_rom module is no longer missing. You now need to comment out line 29, defining the constraint for SW1, from the UCF file. After that is commented out, you can implement the design. After programming the board, you should now see the LED's flipping on and off; if so, you have a working Picoblaze toolchain.		Now, add the program file "prog_rom_example1.vhd" to your project, using "Add Copy of Source". You'll notice that the prog_rom module is no longer missing. You now need to comment out line 29, defining the constraint for SW1, from the UCF file. After that is commented out, you can implement the design. After programming the board, you should now see the LED's flipping on and off; if so, you have a working Picoblaze toolchain.

98.218.226.248 at 14:26, 7 March 2010

2010-03-07T14:26:09Z

← Older revision		Revision as of 14:26, 7 March 2010
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	== PicoBlaze Flow ~~Instructions~~ ==		== PicoBlaze Flow / Tutorial ==

	'''THIS SET OF INSTRUCTIONS ASSUMES THE READER IS FAMILIAR WITH THE ISE SUITE FLOW FOR CREATING, IMPLEMENTING AND PROGRAMING PROJECTS.'''		'''THIS SET OF INSTRUCTIONS ASSUMES THE READER IS FAMILIAR WITH THE ISE SUITE FLOW FOR CREATING, IMPLEMENTING AND PROGRAMING PROJECTS.'''
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	## other logic as needed		## other logic as needed
	# project_constraints.ucf		# project_constraints.ucf

			== Example #1 ==

	=== Picoblaze simple example / toolchain tutorial ===		=== Picoblaze simple example / toolchain tutorial ===
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	JUMP drive_wave		JUMP drive_wave
	</pre>		</pre>

			== Example #2 ==

	=== Expanding on the example ===		=== Expanding on the example ===
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	JUMP drive_wave		JUMP drive_wave
	</pre>		</pre>

			== Example #3 ==

	=== Lets add some input ===		=== Lets add some input ===
Line 354:		Line 360:
	</pre>		</pre>

	=== Run the simulator ===		== Run the simulator ==

	Now we have mnemonics entered into our code, we can easily tweak it. First, we can change the I_Var, J_Var, K_Var, to be smaller values, such as 0x0F. You can then step through the program, or just run it, in the OpenPicIDE simulator.		Now we have mnemonics entered into our code, we can easily tweak it. First, we can change the I_Var, J_Var, K_Var, to be smaller values, such as 0x0F. You can then step through the program, or just run it, in the OpenPicIDE simulator.

	=== Acknowledgements ===		== Acknowledgements / References ==
	This was based on a simple example found here		This was based on a simple example found here http://forums.xilinx.com/xlnx/board/message?board.id=PicoBlaze&thread.id=780 <br>
			The Picoblaze download can be found here http://www.xilinx.com/products/ipcenter/picoblaze-S3-V2-Pro.htm <br>
			OpenPicIDE is available here http://openpicide.org <br>

	Category:FPGAWorkshop		[[Category:FPGAWorkshop]]

Williamgibb: /* picoblaze_example3.v source */

2010-03-06T23:19:49Z

picoblaze_example3.v source

← Older revision		Revision as of 23:19, 6 March 2010
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	if(write_strobe)		if(write_strobe)
	userbit <= out_port;		userbit <= out_port;
	~~end~~
	~~end~~

	// only one bit is read by picoblaze, the SW1.		// only one bit is read by picoblaze, the SW1.
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	endmodule		endmodule
	</pre>		</pre>


	=== picoblaze_example3.psm ===		=== picoblaze_example3.psm ===

Williamgibb: /* picoblaze_example2.psm source */

2010-03-06T22:50:23Z

picoblaze_example2.psm source

← Older revision		Revision as of 22:50, 6 March 2010
Line 183:		Line 183:
	start: LOAD s9, 0xA5 ; 10100101 ; <---- THIS CHANGED		start: LOAD s9, 0xA5 ; 10100101 ; <---- THIS CHANGED
	drive_wave: OUTPUT s9, 0x02 ; write s9 register to userbit		drive_wave: OUTPUT s9, 0x02 ; write s9 register to userbit
	LOAD S2, 0x2F ; S2 initial value		LOAD S2, 0x2F ; S2 initial value <---- THIS CHANGED
	loop2: LOAD S1, 0xFF ; S1 initial value		loop2: LOAD S1, 0xFF ; S1 initial value
	loop1: LOAD s0, 0xFF ; S0 initial value		loop1: LOAD s0, 0xFF ; S0 initial value

Williamgibb at 22:06, 6 March 2010

2010-03-06T22:06:24Z

← Older revision		Revision as of 22:06, 6 March 2010
Line 58:		Line 58:
	'''note: the picoblaze assembly files and the openpicide file need to be in the same directory'''		'''note: the picoblaze assembly files and the openpicide file need to be in the same directory'''

	Now, add the program file "prog_rom_example1.vhd" to your project, using "Add Copy of Source". You'll notice that the prog_rom module is no longer missing, ~~and~~ you can ~~now~~ implement the design. After programming the board, you should now see the LED's flipping on and off; if so, you have a working Picoblaze toolchain.		Now, add the program file "prog_rom_example1.vhd" to your project, using "Add Copy of Source". You'll notice that the prog_rom module is no longer missing. You now need to comment out line 29, defining the constraint for SW1, from the UCF file. After that is commented out, you can implement the design. After programming the board, you should now see the LED's flipping on and off; if so, you have a working Picoblaze toolchain.

	=== constraints.ucf ===		=== constraints.ucf ===
Line 199:		Line 199:
	=== Lets add some input ===		=== Lets add some input ===

	Lets read in a switch now! To do this, you can do one of two things. You can add a input port, and add the multiplexed input re g manually. I've already built this example, so you can create a new ISE project. Can call this project "picoblaze_example3". Follow the instructions from earlier in the tutorial, but use the following verilog source file. You'll also need to create a new OpenPicIDE project with the source used in the following example.		Lets read in a switch now! To do this, you can do one of two things. You can add a input port, and add the multiplexed input re g manually. I've already built this example, so you can create a new ISE project. Can call this project "picoblaze_example3". Follow the instructions from earlier in the tutorial, but use the following verilog source file. You'll also need to create a new OpenPicIDE project with the source used in the following example. Make sure that SW1 is not commented out in your UCF file.

	=== picoblaze_example3.v source ===		=== picoblaze_example3.v source ===
Line 362:		Line 362:
	=== Acknowledgements ===		=== Acknowledgements ===
	This was based on a simple example found here		This was based on a simple example found here

			Category:FPGAWorkshop