A simple design with Wishbone bus - Revision history

FabienM at 10:43, 30 June 2022

2022-06-30T10:43:16Z

2013-09-04T16:01:18Z

‎Compile Linux drivers

2012-12-16T14:59:50Z

2012-01-30T10:40:52Z

‎General structure

2012-01-30T10:40:18Z

‎General structure

2011-12-13T15:36:53Z

‎Device access

2011-12-13T10:13:48Z

‎Play with button and LED

2011-12-13T10:06:51Z

‎Test Button

2011-12-13T10:04:12Z

‎Test LED

2011-12-13T10:02:17Z

‎Test LED

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 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).

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 To compile the drivers for this design select them in Linux menuconfig:
 <pre class="host">
-  $ make linux26-menuconfig
+  $ make linux-menuconfig
 </pre>
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 and compile them:
 <pre class="host">
-$ make linux26 && make
+$ make linux && make
 </pre>

@@ Line 2: / Line 2: @@
 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).

@@ Line 16: / Line 16: @@
 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

@@ Line 16: / Line 16: @@
 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

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 * Make LED access :
 <pre class="apf">
-# mknod /dev/led0 c 248 0
+# mknod /dev/led0 c LED_MAJOR_NUMBER 0
 </pre>
 * Make button access :
 <pre class="apf">
-# mknod /dev/button0 c 249 0
+# mknod /dev/button0 c BUTTON_MAJOR_NUMBER 0
 </pre>
 ==== Test LED ====

@@ Line 256: / Line 256: @@
 ==== 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:
 To compile :
 <pre class="host">
-arm-linux-gcc push-led.c -o push-led
+$ make test
 </pre>
-To use it, simply type :
+To use it, simply type (after downloaded it under your target):
 <pre class="apf">

@@ Line 227: / Line 227: @@
 ==== 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">
 <pre class="host">
-$ make -C target/linux/modules/fpga/wishbone_example/wb_button/ test
+$ make test
 </pre>
-copy it to your board and then:
+copy the ''testbutton'' binary in your target then launch it:
 <pre class="apf">
 # ./testbutton /dev/button0

@@ Line 201: / Line 201: @@
 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">
-$ arm-linux-gcc testled.c -o testled
+$ make test
 </pre>
-Download it on your APF, then test it :
+Download ''testled'' binary on your APF, then test it :
 <pre class="apf">
 # ./testled /dev/led0