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--- private:keyboard_switch [2012/06/01 21:39]
Patrick Wacker weitere Bearbeitung
+++ private:keyboard_switch [2012/06/14 18:57] (aktuell)
Patrick Wacker angefangen register zu beschreiben
@@ Zeile 1: / Zeile 1: @@
-====== Erste Überlegungen zu einen KeyBoard-Switch ======
+====== Erste Überlegungen zu einen Keyboard/Mouse-Switch ======
-=== Anforderungen ===
+==== Anforderungen ====
   * 2 ((evt. 3 oder erweiterbar)) Tastaturen (KB) und 2 ((evt. 3 oder erweiterbar)) Mäuse (MS) anschließbar (beides PS/2-Schnittstelle)
@@ Zeile 17: / Zeile 17: @@
   *
-=== Umsetzung ===
+==== Umsetzung ====
   * Ein µController zur Verwaltung der Eingaben (2x KB/MS)
@@ Zeile 24: / Zeile 24: @@
   * Simples serielles Protokoll zur Übertragung der Daten (SPI oder I2C) ((damit eine vielzahl von Clients bedient werden kann))
   *
+==== Aufbau ====
+<graphviz dot left>
+digraph aufbau {
+ 	graph [ rankdir="TB" ];
+ 	node [ shape=record, fontname=Helvetica, fontsize=10 ];
+ 	edge [ fontname=Helvetica, fontsize=10 ];
+        subgraph cluster0 {
+                style="plaintext";
+                color="invis";
+         	kb1 [ label="Keyboard 1", shape="ellipse", style=filled, fillcolor=gray ];
+ 	        ms1 [ label="Mouse 1", shape="ellipse", style=filled, fillcolor=gray ];
+                label = "required";
+        }
+        subgraph cluster1 {
+                style="plaintext";
+                color="invis";
+                kb2 [ label="Keyboard 2", shape="ellipse", style=filled, fillcolor=lightgray ];
+                ms2 [ label="Mouse 2", shape="ellipse", style=filled, fillcolor=lightgray ];
+                label = "optional";
+        }
+        subgraph cluster2 {
+                style="filled, dashed";
+                color="black";
+                fillcolor="lightgrey"
+                usbhub [ label="USB-Hub", style="filled", fillcolor="#e0e0e0" ];
+                keyboards [ label="Keyboards", shape="oval", style="filled", fillcolor="#e0e0e0" ];
+                mice [ label="Mice", shape="oval", style="filled", fillcolor="#e0e0e0" ];
+                keyboards -> usbhub [ label="USB", dir="both" ];
+                mice -> usbhub [ label="USB", dir="both" ];
+                label = "optional USB connection";
+        }
+        subgraph cluster3 {
+                style="invis";
+                client1 [ label="Client Contr. 1", style=filled, fillcolor=lightblue ];
+                PC1 [ label="PC 1", shape="box3d", style=filled, fillcolor=green ];
+                client1 -> PC1 [ label="USB", color="black" ];
+        }
+        subgraph cluster4 {
+                style="invis";
+                client2 [ label="Client Contr. 2", style=filled, fillcolor=lightblue ];
+                PC2 [ label="PC 2", shape="box3d", style=filled, fillcolor=green ];
+                client2 -> PC2 [ label="USB", color="black" ];
+        }
+        subgraph cluster5 {
+                style="invis";
+                client3 [ label="Client Contr. 3", style=filled, fillcolor=lightblue ];
+                PC3 [ label="PC 3", shape="box3d", style=filled, fillcolor=green ];
+                client3 -> PC3 [ label="USB", color="black" ];
+        }
+        subgraph cluster6 {
+                style="invis";
+                client4 [ label="Client Contr. 4", style=filled, fillcolor=lightblue ];
+                PC4 [ label="PC 4", shape="box3d", style=filled, fillcolor=green ];
+                client4 -> PC4 [ label="USB", color="black" ];
+        }
+        subgraph cluster7 {
+                style="dashed";
+                client6 [ label=" . . . \nClient X", style="solid", color="white" ];
+                PC6 [ label=" . . . \nPC X", style="solid", color="white" ];
+                client6 -> PC6 [ label="USB", color="black" ];
+                client5 [ label="Client Contr. 5", style="filled", fillcolor="#d5e3ff" ];
+                PC5 [ label="PC 5", shape="box3d", style="filled", fillcolor="#b6ffc2" ];
+                client5 -> PC5 [ label="USB", color="black" ];
+                { rank="same"; "client6"; "client5"; }
+                { rank="same"; "PC6"; "PC5"; }
+                label = "etc. (expandable)";
+        }
+        MC1 [ label="\rMain Controller", fontsize="14", width="1.70", height="1.00", style="filled", fillcolor="yellow" ];
+        { rank="same"; "MC1"; "usbhub"; }
+        kb1 -> MC1 [ arrowhead="open", style="solid", label="PS/2", color="black" ];
+        ms1 -> MC1 [ arrowhead="open", style="solid", label="PS/2", color="black" ];
+        kb2 -> MC1 [ arrowhead="open", style="solid", label="PS/2", color="gray" ];
+        ms2 -> MC1 [ arrowhead="open", style="solid", label="PS/2", color="gray" ];
+        MC1 -> usbhub [ style="dotted", label="USB", dir="both" ];
+        MC1 -> client1 [ label="SPI", color="black" ];
+        MC1 -> client2 [ label="SPI", color="black" ];
+        MC1 -> client3 [ label="SPI", color="black" ];
+        MC1 -> client4 [ label="SPI", color="black" ];
+        MC1 -> client5 [ label="SPI", color="black" ];
+}
+</graphviz>
+==== Mögliche SPI Telegramme ====
+Die hier dokumentierten Telegramme dienen erstmal einer ersten Übersicht und keineswegs der fertigen Implementierung! Änderungen können jederzeit stattfinden!
+<register>
+register = general control
+long desc = general control telegram from the master
+#short desc =
+perms = W
+#addr = 0x0
+#reset = 0x0
+length = 24
+bit range = 7 7
+bit name = GC
+bit desc = 0 - No general control command\n1 - GC Command (see CMD)
+#bit flags = W1C
+bit range = 6 0
+bit name = CMD
+bit desc = 000 0001 (0x01) - GET_KB_LED_STATUS\n000 0010 (0x02) - GET_KB_NUMLOCK_STATUS\n000 0011 (0x03) - GET_KB_ROLL_STATUS\n000 0100 (0x05) - GET_KB_CAPSLOCK_STATUS
+</register>

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