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+====== RocNetNode Pi08 LEDs ======
+[[:english#command_stations|{{  :interface.png}}]][[:english|{{  :rocrail-logo-35.png}}]][[:rocnet:rocnetnode-en|{{ :rocnet:rocnet-hw.png}}]]
+[[:rocnet:rocnetnode-en|{{ icons:uk.png}}]][[:rocnet:rocnetnode-de|{{ icons:de.png}}]]
+[[:english|Content]] -> [[:english#command_stations|Command Stations]] ->  **[[rocnet:rocnet-prot-en|RocNet]]**
+  * [[rocnet:rocnet-prot-en|RocNet Protocol]] | [[:rocnet:rocnetnode-en|RocNetNode]]
+    * [[:rocnet:rocnetnode-hwsetup-en|RocNetNode Setup]] | [[:rocnet:rocnetnode-setup-en|RocNetNode Configuration]] | [[:rocnet:rocnetnode-img-en|Installer package]] | [[:rocnet:article-en|MERG Journal]]
+  * [[:gca:gca-index-en#raspbery_pi_rocnet_boards|Raspberry Pi Boards]]
+    * [[:gca1-pi01-en|GCA-Pi01]] | [[:gca_pi02-en|GCA-Pi02]] | [[:gca-pi03-en|GCA-PI03]] | [[:gca-pi04-en|GCA-PI04]] | [[:gca-pi05-en|GCA-Pi05]] | [[:gca-pi06-en|GCA-Pi06]] | [[:GCA-PI07-en|GCA-PI07]] | [[:gca107-en|GCA107 Relay board]] | [[:rocnet:rocdisplay-en|RocDisplay]] | [[:rocnet:fastclock-en|Fast Clock]] | **[[:rocnet:rocnetnode-led-en|LED driver Pi08]]**
+  * [[:rocnet:rocnetnode-led-signal-examples-en|Signal examples]]
+ \\
+{{:rocnet:pi08.png}}\\
+ \\
+=====Introduction=====
+The Pi08 is based on the PCA9622 16 bit I2C LED driver.\\
+ \\
+=====I2C Addressing=====
+The final Pi08 will be addressable in the range from 0x60 to 0x6F for driving 256 separate LED outputs connected to one RocNetNode/Raspberry Pi.\\
+ \\
+=====Chip Mode=====
+The PCA9622 must be programmed after every system power on.\\
+RocNetNode will scan this I2C range at startup or after using the __**[[:rocnet:rocnetnode-setup-en|RocNetNode Dialog]]**__ and will setup the found chips.\\
+ \\
+The following registers will be set automatically:
+  * In MODE1 the SLEEP register must be set to normal mode. (To activate the PWM oscillator)
+  * Register LEDOUT0...LEDOUT3 must be set to enable the LED driver outputs.
+ \\
+=====Output support=====
+^ Parameter ^ Description ^
+| Port type | LED |
+| Addressing | FLAT from 1 to 256 |
+| Value | The on PWM from 0 to 255 |
+| Parameter Off | The off PWM from 0 to 255 |
+| Blink | Supported with regarding the delay value. |
+| Delay(Dimming) | Used as increment. A value of zero will switch directly to on/off PWM. \\ A value of one ist the slowest dim, app. 10ms * (on-off) PWM. (Increasing the delay value every 10ms.) |
+Note: The dimming speed could be influenced by the number of LEDs which have to be set at the same time.\\
+ \\
+=====Signal support=====
+This is both for simple and medium complex signals up to 8 LED and max. 10 aspects. For more complex signals the macro type should be used.\\
+Only the RED address will be used as offset for all LEDs.\\
+^ Parameter ^ Description ^
+| Control | Aspect numbers |
+| Port type | LED |
+| Addressing | FLAT from 1 to 256 - number of aspects |
+| Delay(Dimming) | Is set automatically set to 10 so the LEDs will slow dim on and off. \\ This value is fixed and cannot be changed in the signal properties.  |
+====Aspect Values====
+See: __**[[:signal-props-en#value|Aspect Values]]**__ \\
+The number of controlled LEDs will be calculated from the aspect values.\\
+===Example===
+__Interface:__\\
+{{:rocnet:pi08-signal-int-en.png}}\\
+  * Bus 2: Node ID 2
+  * Base address 5
+  * Control: Aspect numbers
+  * Port type: LED
+ \\
+__Details:__\\
+{{:rocnet:pi08-signal-details-en.png}}\\
+  * Aspects: 3
+Aspect values:\\
+^ Aspect ^ Value ^ Hex ^ LED address ^
+|  0  |  1  |  0x0001  |  5  |
+|  1  |  2  |  0x0002  |  6  |
+|  2  |  1285  |  0x0505  |  5 + 7 (blink)  |
+===Aspect value examples===
+^ Value ^ LEDs ^
+| 0x0001 | LED 1 on |
+| 0x0002 | LED 2 on |
+| 0x0004 | LED 3 on |
+| 0x0008 | LED 4 on |
+| 0x0101 | LED 1 blinking |
+| 0x0505 | LED 1 and 3 blinking |
+| 0x0003 | LED 2 and LED 1 on |
+| 0x0103 | LED 2 on and LED 1 blinking |
+| 0xFFFF | All LED's Off |
+ \\
+====Brightness====
+There are 3 brightness modes available:
+^ Mode ^ Description ^ Activation ^
+| Weather | The brightness reported with the clock update events is used. | Default. With a LED output on address 1001. |
+| Day | The brightness is set by output command. | With a LED output on address 1002, the output value is used. (If zero: 255) |
+| Night | The brightness is set by output command. | With a LED output on address 1003, the output value is used. (If zero: 100) |
+ \\
+=====Macro support=====
+The LED __**[[:rocnet:rocnetnode-setup-en#type1|Type]]**__ is also supported in the macro setup.\\