A simple design with Wishbone bus - Revision history

FabienM at 10:43, 30 June 2022

2022-06-30T10:43:16Z

← Older revision		Revision as of 12:43, 30 June 2022
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	This article is intended to explain how to design Wishbone compatible components with simple example.		This article is intended to explain how to design Wishbone compatible components with simple example.
	The VHDL source code can be found in firmware/wishbone_example from [~~http~~://~~sourceforge~~.~~net~~/p/armadeus~~/code~~ our ~~sourceforge GIT~~ repository].		The VHDL source code can be found in firmware/wishbone_example from [https://gitlab.com/armadeus/armadeus-bsp our gitlab repository].

	Description of the Wishbone structure for Armadeus APF boards can be found [[FpgaArchitecture#Le_bus_Wishbone \| here]] (in french).		Description of the Wishbone structure for Armadeus APF boards can be found [[FpgaArchitecture#Le_bus_Wishbone \| here]] (in french).

2013-09-04T16:01:18Z

Compile Linux drivers

← Older revision		Revision as of 18:01, 4 September 2013
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	To compile the drivers for this design select them in Linux menuconfig:		To compile the drivers for this design select them in Linux menuconfig:
	<pre class="host">		<pre class="host">
	$ make ~~linux26~~-menuconfig		$ make linux-menuconfig
	</pre>		</pre>

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	and compile them:		and compile them:
	<pre class="host">		<pre class="host">
	$ make ~~linux26~~ && make		$ make linux && make
	</pre>		</pre>

2012-12-16T14:59:50Z

← Older revision		Revision as of 16:59, 16 December 2012
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	This article is intended to explain how to design Wishbone compatible components with simple example.		This article is intended to explain how to design Wishbone compatible components with simple example.
	The VHDL source code can be found in [http://~~armadeus.svn.~~sourceforge.net/~~viewvc~~/armadeus/~~trunk/firmware/wishbone_example/~~ sourceforge ~~tree~~].		The VHDL source code can be found in firmware/wishbone_example from [http://sourceforge.net/p/armadeus/code our sourceforge GIT repository].

	Description of the Wishbone structure for Armadeus APF boards can be found [[FpgaArchitecture#Le_bus_Wishbone \| here]] (in french).		Description of the Wishbone structure for Armadeus APF boards can be found [[FpgaArchitecture#Le_bus_Wishbone \| here]] (in french).

2012-01-30T10:40:52Z

General structure

← Older revision		Revision as of 12:40, 30 January 2012
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	toggle LED value by writing in ''led'' register.		toggle LED value by writing in ''led'' register.

	[[image:Wb_buttonled_top.png\|700px\|center\|thumb\|'''figure 1''' - ''Schematics of wishbone example. /!\ ~~WEIM signal~~ are wrong for the APF51.'']]		[[image:Wb_buttonled_top.png\|700px\|center\|thumb\|'''figure 1''' - ''Schematics of wishbone example. /!\ Bus signals are wrong for the APF51 because addr and data are multiplexed.'']]

	''imx_wrapper'', ''syscon'' and ''irq_mngr'' are standards		''imx_wrapper'', ''syscon'' and ''irq_mngr'' are standards

2012-01-30T10:40:18Z

General structure

← Older revision		Revision as of 12:40, 30 January 2012
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	toggle LED value by writing in ''led'' register.		toggle LED value by writing in ''led'' register.

	[[image:Wb_buttonled_top.png\|700px\|center\|thumb\|'''figure 1''' - ''Schematics of wishbone example'']]		[[image:Wb_buttonled_top.png\|700px\|center\|thumb\|'''figure 1''' - ''Schematics of wishbone example. /!\ WEIM signal are wrong for the APF51.'']]

	''imx_wrapper'', ''syscon'' and ''irq_mngr'' are standards		''imx_wrapper'', ''syscon'' and ''irq_mngr'' are standards

2011-12-13T15:36:53Z

Device access

← Older revision		Revision as of 17:36, 13 December 2011
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	* Make LED access :		* Make LED access :
	<pre class="apf">		<pre class="apf">
	# mknod /dev/led0 c ~~248~~ 0		# mknod /dev/led0 c LED_MAJOR_NUMBER 0
	</pre>		</pre>
	* Make button access :		* Make button access :
	<pre class="apf">		<pre class="apf">
	# mknod /dev/button0 c ~~249~~ 0		# mknod /dev/button0 c BUTTON_MAJOR_NUMBER 0
	</pre>		</pre>

			Replace '''LED_MAJOR_NUMBER''' and '''BUTTON_MAJOR_NUMBER''' with correct major number given when modprobe is done.

	==== Test LED ====		==== Test LED ====

2011-12-13T10:13:48Z

Play with button and LED

← Older revision		Revision as of 12:13, 13 December 2011
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	==== Switching LED with button ====		==== Switching LED with button ====

	A simple program is available in ~~[http~~:~~//armadeus.svn.sourceforge.net/viewvc/armadeus/trunk/~~target/linux/modules/fpga/wishbone_example/~~push-led.c?view=markup wishbone example directory]~~ to switch on the LED when button is pressed.		A simple program is available in wishbone example directory:
			<pre class="host">
			target/linux/modules/fpga/board_designs/wishbone_example/
			</pre>
			to switch on the LED when button is pressed.

	To compile :		To compile :
	<pre class="host">		<pre class="host">
	~~arm-linux-gcc push-led.c -o push-led~~		$ make test
	</pre>		</pre>

	To use it, simply type :		To use it, simply type (after downloaded it under your target):

	<pre class="apf">		<pre class="apf">

2011-12-13T10:06:51Z

Test Button

← Older revision		Revision as of 12:06, 13 December 2011
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	==== Test Button ====		==== Test Button ====

	A test program is available in ~~[http~~:~~//armadeus.svn.sourceforge.net/viewvc/armadeus/trunk/~~target/linux/modules/fpga/wishbone_example/wb_button/~~testbutton.c?view=markup target~~/~~linux/modules/fpga/wishbone_example/wb_button/] directory,~~ simply compile it with:		A test program is available in directory:
			<pre class="host">
			target/linux/modules/fpga/board_designs/wishbone_example/wb_button/
			</pre>
			simply compile it in the directory with command:
	<pre class="host">		<pre class="host">
	$ make ~~-C target/linux/modules/fpga/wishbone_example/wb_button/~~ test		$ make test
	</pre>		</pre>

	copy ~~it to~~ your ~~board and~~ then:		copy the ''testbutton'' binary in your target then launch it:
	<pre class="apf">		<pre class="apf">
	# ./testbutton /dev/button0		# ./testbutton /dev/button0

2011-12-13T10:04:12Z

Test LED

← Older revision		Revision as of 12:04, 13 December 2011
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	A test program is available in module directory:		A test program is available in module directory:
			<pre class="host">
	target/linux/modules/fpga/board_designs/wishbone_example/wb_led/		target/linux/modules/fpga/board_designs/wishbone_example/wb_led/
			</pre>
	simply compile it with arm-linux-gcc compiler :		simply compile it with arm-linux-gcc compiler :

	<pre class="host">		<pre class="host">
	$ ~~arm-linux-gcc testled.c -o testled~~		$ make test
	</pre>		</pre>

	Download it on your APF, then test it :		Download ''testled'' binary on your APF, then test it :
	<pre class="apf">		<pre class="apf">
	# ./testled /dev/led0		# ./testled /dev/led0

2011-12-13T10:02:17Z

Test LED

← Older revision		Revision as of 12:02, 13 December 2011
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	==== Test LED ====		==== Test LED ====

	A test program is available in ~~[http~~:~~//armadeus.svn.sourceforge.net/viewvc/armadeus/trunk/~~target/linux/modules/fpga/wishbone_example/wb_led/~~testled.c?view=markup module directory],~~ simply compile it with arm-linux-gcc compiler :		A test program is available in module directory:
			target/linux/modules/fpga/board_designs/wishbone_example/wb_led/
			simply compile it with arm-linux-gcc compiler :

	<pre class="host">		<pre class="host">