adding uext and front panel pages

docs/helios64/front-panel.md

@@ -0,0 +1,67 @@
+## Front Panel (P3)
+
+Helios64 provides 24 front panel pinout on header P3.
+User can connect the front panel PCB into the P3 in the Helios64 board by using provided ribbon cable. 
+The ribbon cable are provided when you buy the Full Bundle of the Helios64 board.
+Below Graphics and Table describe the layout of the front panel header.
+
+![P3 Pinout](/helios64/img/front-panel/fp-header.png)
+
+### Front Panel Pinout Table
+
+| PIN | Port | Remarks |
+|-----|------|-------------|
+| 1   | HDD LED - High Side (HS) | |
+| 2   | PWR LED - HS | |
+| 3   | GND          | Ground |
+| 4   | GND          | Ground |
+| 5   | RST Switch   | |
+| 6   | PWR Switch   | | 
+| 7   | USR1 Switch  | | 
+| 8   | USR2 Switch  | | 
+| 9   | Network Activity LED - HS | | 
+| 10  | USB Activity LED - HS | |
+| 11  | 3V3                  | 3.3 Volt Supply |
+| 12  | SYS Green LED - HS   | |
+| 13  | SYS Red LED - HS     | | 
+| 14  | SATA 0 Activity - HS | | 
+| 15  | SATA 0 Error - HS    | | 
+| 16  | SATA 1 Activity - HS | | 
+| 17  | SATA 1 Error - HS    | | 
+| 18  | SATA 2 Activity - HS | | 
+| 19  | SATA 2 Error - HS    | | 
+| 20  | SATA 3 Activity - HS | | 
+| 21  | SATA 3 Error - HS    | | 
+| 22  | SATA 4 Activity - HS | |
+| 23  | SATA 4 Error - HS    | | 
+| 24  | GND                  | Ground |
+ 
+### Wiring Diagram
+
+This Figures describe the PCB layout from the left hand side (RHS) and right hand side (LHS) view respectively.
+The vertical mounting of this double-sided PCB will make the front panel have two LED indicators (red and green) for Sys and HDD 1 untill HDD 5 Activity Status(or Error Status).
+
+![Front Panel PCB RHS](/helios64/img/front-panel/fp-pcb-rhs.png)
+
+![Front Panel PCB LHS](/helios64/img/front-panel/fp-pcb-lhs.png)
+
+There is provided ribbon connection from the P3 at the Helios64 board to the P2 at the front panel PCB.
+So you can easily connect this two parts.
+
+!!! Warning
+        Please be careful with the header polarity. Make sure that Pin no 1 at the P3 of Helios64 are connected to the no 1 at the P1 of front panel PCB.
+
+The front panel USB 3.0 port can be directly connected to the Front USB 3.0 Port on the board, this interface are connected with regular USB 3.0 complied cable.
+
+---TBU---
+
+The connection between P3 from the Helios64 board to P1 on the front panel PCB board is illustrated in below figure:
+![Front Panel Connection](/helios64/img/hardware/ribbon-cable-connected.jpg)
+
+
+
+### The Front Panel Description
+
+Below graphics show the front panel descriptions:
+
+![Front Panel Label](/helios64/img/front-panel/front-panel-labeled.jpg)

docs/helios64/gpio.md

@@ -1,9 +1,9 @@
-## User Accessible GPIOs (P3)
+## User Accessible GPIOs (P5)
 
-Helios64 provides 22 GPIOs on header P3 which can be used for user application.
+Helios64 provides 22 GPIOs on header P5 which can be used for user application.
 Those GPIOs are provided via an 16-bit IO Expander [PCA9655E](http://www.onsemi.com/PowerSolutions/product.do?id=PCA9655E) connected to I2C bus 0.
 
-![P3 Pinout](/helios64/img/hardware/gpio.jpg)
+![P5 Pinout](/helios64/img/hardware/gpio.jpg)
 
 ### Pinout Table
 

docs/helios64/hardware.md

@@ -40,7 +40,7 @@ FAN1|Fan Connector|4x1 Pin Male Header|PWM and RPM support
 FAN2|Fan Connector|4x1 Pin Male Header|PWM and RPM support
 P1|I2C Header|4x1 Pin Male Header|I2C Bus 1
 P2|UEXT Header|2x5 Pin Male Header|Universal EXTension Support [2]
-P3|Front Panel Header|12x1 Pin Male Header|PWM and RPM support
+P3|Front Panel Header|12x2 Pin Male Header|PWM and RPM support
 P4|Buzzer Header|2x1 Pin Header|Buzzer Speaker Support 
 P5|GPIO Pin Header|7x2 Pin Male Header|GPIO configurable as input or output<br>Via IO Expander on I2C Bus 0
 PWR BTN|Power Button|Push Button|Power Button

docs/helios64/m2.md

@@ -0,0 +1,42 @@
+## M2 Connector (P2)
+M.2, formerly known as the Next Generation Form Factor (NGFF), is a specification for internally mounted computer expansion cards and associated connectors. M.2 replaces the mSATA standard, which uses the PCI Express Mini Card physical card layout and connectors.
+
+---TBU---
+
+### Pinout Table
+Helios64 provides UEXT on header P2 which following the UEXT standard, containing UEXT, SPI, and I2C connector.
+You can find the P2 header from the connector/interface list at [hardware overview](/helios64/hardware) page.
+
+![P5 Pinout](/helios64/img/hardware/UEXT_pinout.png)
+
+Below is the detailed description of UEXT header pinout:
+
+| PIN | Port | Remarks |
+|-----|------|-------------|
+|1 |3.3V|
+|2 |GND|
+|3 |TXD (UART)|
+|4 |RXD (UART)|
+|5 |SCL (I2C)|
+|6 |SDA (I2C)|
+|7 |MISO (SPI)|
+|8 |MOSI (SPI)|
+|9 |SCK (SPI)|
+|10 |SSEL (SPI)|
+
+!!! Warning
+       Please note the UEXT connector at Helios64 board doesn't provide the plastic covering, so be carefull with the header polarity!
+Make sure your device is correctly oriented before connecting!
+
+### SPI and I2C
+
+---linked to SPI and I2C pages, TBU---
+
+### Exception
+
+We have connected the UART bus from the RK3399K to the serial console in the USB-C, so there is no dedicated line of UART in the UEXT connector.
+The UART bus in this UEXT header is the parallel ones with the serial console.
+Therefore if you connect some module which might ***require dedicated serial UART line*** to the RK3399K, this module ***will not be detected***.
+
+!!! Notes
+       Please note also, that GSM modules in UEXT format also will not work due to similar reason.

docs/helios64/uext.md

@@ -0,0 +1,53 @@
+## UEXT Connector (P2)
+
+
+### UEXT overview
+the development boards so customer can choose which feature he want to use.
+
+UEXT (Universal-Extension-Connector) is board to bard connector which support 3 serial communication interface, such as I2C, SPI, RS232.
+The combination of theese feature is supported by every decent microcontroller, this will enable broad choice to connect modules.
+UEXT gives you freedom to choose module that you want to use.
+
+!!! Notice
+        As UEXT have RS232 and the Rx and Tx signals should be crossed we can say that UEXT on the board is with HOST; UEXT on the module is with SLAVE/DEVICE layout.
+
+---TBU---
+
+
+### Pinout Table
+Helios64 provides UEXT on header P2 which following the UEXT standard, containing UEXT, SPI, and I2C connector.
+You can find the P2 header from the connector/interface list at [hardware overview](/helios64/hardware) page.
+
+![P5 Pinout](/helios64/img/hardware/UEXT_pinout.png)
+
+Below is the detailed description of UEXT header pinout:
+
+| PIN | Port | Remarks |
+|-----|------|-------------|
+|1 |3.3V|
+|2 |GND|
+|3 |TXD (UART)|
+|4 |RXD (UART)|
+|5 |SCL (I2C)|
+|6 |SDA (I2C)|
+|7 |MISO (SPI)|
+|8 |MOSI (SPI)|
+|9 |SCK (SPI)|
+|10 |SSEL (SPI)|
+
+!!! Warning
+       Please note the UEXT connector at Helios64 board doesn't provide the plastic covering, so be carefull with the header polarity!
+Make sure your device is correctly oriented before connecting!
+
+### SPI and I2C
+
+---linked to SPI and I2C pages, TBU---
+
+### Exception
+
+We have connected the UART bus from the RK3399K to the serial console in the USB-C, so there is no dedicated line of UART in the UEXT connector.
+The UART bus in this UEXT header is the parallel ones with the serial console.
+Therefore if you connect some module which might ***require dedicated serial UART line*** to the RK3399K, this module ***will not be detected***.
+
+!!! Notes
+       Please note also, that GSM modules in UEXT format also will not work due to similar reason.

mkdocs.yml

@@ -80,6 +80,8 @@ nav:
     - I2C : 'helios64/i2c.md'
     - LED : 'helios64/led.md'
     - USB : 'helios64/usb.md'
+    - UEXT : 'helios64/uext.md'
+    - Front Panel : 'helios64/front-panel.md'
 - Helios4:
   - Introduction: 'helios4/intro.md'
   - Kit Assembly: 'helios4/kit.md'