aiotdevkit: add readme and link to it

Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

README.md

@@ -32,6 +32,7 @@ X86
 * [UP](../master/docs/up.md)
 * [UP Squared](../master/docs/up2.md)
 * [Intel Joule](../master/docs/joule.md)
+* [IEI Tank](../master/docs/iei-tank.md)
 
 ARM
 ---

docs/iei-tank.md

@@ -0,0 +1,40 @@
+IEI TANK AIoT Dev. Kit  {#iei-tank}
+================================
+TANK AIoT Dev. Kit features rich I/O and dual PCIe by 16 slots with by 8 signal
+for add-on card installation such as PoE (IPCEI-4POE) card or acceleration card
+(Mustang-F100-A10 & Mustang-V100-RX8) to enhance function and performance for
+various applications.
+
+For the full specifications please visit the product page:
+
+https://www.ieiworld.com/tank-aiot-development-kit
+
+Interface notes
+-----------------------
+The MRAA platform file was developed using an IEI TANK-870-Q170 and may not
+be compatible with other TANK systems. 6 serial ports and 8 digital pins are
+available and can be controlled using MRAA on this system.
+
+**UART**
+ * 4 x RS-232 (2 x RJ-45, 2 x DB-9 w/2.5KV isolation protection)
+ * 2 x RS-232/422/485 (DB-9)
+
+**GPIO**
+ * 8-bit digital I/O , 4-bit input / 4-bit output (DB9)
+
+Pin Mapping
+--------------------
+The GPIO numbering in MRAA is explained in the table below. To use the pins
+the *gpio_f7188x* Linux kernel module must be available and loaded.
+
+| MRAA Pin | DB9 Pin      | Sysfs GPIO | Function        |
+|----------|--------------|------------|-----------------|
+| 0        | 1            | 4          | DIN0            |
+| 1        | 2            | 0          | DOUT0           |
+| 2        | 3            | 11         | DIN1            |
+| 3        | 4            | 1          | DOUT1           |
+| 4        | 5            | 12         | DIN2            |
+| 5        | 6            | 2          | DOUT2           |
+| 6        | 7            | 13         | DIN3            |
+| 7        | 8            | 3          | DOUT3           |
+| 8        | 9            |            | +5V             |

docs/index.java.md

@@ -51,6 +51,7 @@ Specific platform information for supported platforms is documented here:
 - @ref up
 - @ref joule
 - @ref ft4222
+- @ref iei-tank
 
 ## DEBUGGING
 

docs/index.md

@@ -59,6 +59,7 @@ Specific platform information for supported platforms is documented here:
 - @ref mock
 - @ref linkit_7688
 - @ref omega2
+- @ref iei-tank
 
 ## DEBUGGING